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International

[Submitted and In revision]
  1. Dong-Hyoun Na, Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, "Beamforming and band allocation for satellite and high-altitude platforms cognitive systems," Submitted to IEEE Wireless Communication Letters
  2. Byungju Lim, Ju-Hyung Lee, Jae-Hong Kwon, and Young-Chai Ko, "Joint association and resource allocation for multi-hop integrated access and backhaul (IAB) network," Submitted to IEEE Transactions on Wireless Communications
  3. Byungju Lim, Won Joon Yun, Joongheon Kim and Young-Chai Ko, "Joint user clustering and beamforming using cross-entropy based machine learning for mmWave-NOMA with imperfect SIC," Submitted to IEEE Transactions on Wireless Communications
  4. Ju-Hyung Lee, Hyowoon Seo, Jihong Park, Mehdi Bennis, and Young-Chai Ko, "Learning emergent random access protocol for LEO satellite networks," In revision for the publication at IEEE Transactions on Wireless Communication
  5. Dohyung Jang, Ha-Lim Song, Young-Chai Ko, and H. Jin Kim, "Distributed beam tracking for vehicular communications via UAV-assisted cellular network," In revision for the publication at IEEE Transactions on Vehicular Technology
  6.  Ju-Hyung Lee, Hyowoon Seo, Jihong Park, Mehdi Bennis, and Young-Chai Ko, "Integrating LEO satellites and multi-UAV reinforcement learning for hybrid FSO/RF non-terrestrial network," In revision for the publication at IEEE Transactions on Vehicular Technology
[To appear]
  1. Byungju Lim, Won Joon Yun, Joongheon Kim, and Young-Chai Ko, "Joint pilot design and channel estimation using deep residual learning for multi-cell massive MIMO under hardware impairments," To appear in IEEE Transactions on Vehicular Technology (DOI: 10.1109/TVT.2022.3170556[Ack: IITP Post MIMO]
  2. Ju-Hyung Lee, Ki-Hong Park, Young-Chai Ko, Mohamed-Slim Alouini, "Spectral-Efficient Network Design for High-Altitude Platform Station Networks with Mixed RF/FSO Systems," To appear in IEEE Transactions on Wireless Communications (DOI: 10.1109/TWC.2022.3154401[Ack: NRF BRL]
  3. Kug-Jin Jung, Sung Sik Nam, Young-Chai Ko, and Mohamed-Slim Alouini, "Ergodic capacity analysis of UAV-based FSO links over foggy channels,"  To appear in  IEEE Wireless Communication Letters (DOI: 10.1109/LWC.2022.3175805[Ack: NRF BRL]
[2022] 
  1. Jae-Hong Kwon, Byungju Lim, and Young-Chai Ko, "Resource allocation and system design of out-band based integrated access and backhaul network at mmWave band," IEEE Transactions on Vehicular Technology, Vol. 71, No. 6, pp. 6503-6517, Jun. 2022. (DOI: 10.1109/TVT.2022.3164751 [Ack: ADD FNT]
  2. Dong-Hyoun Na, Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, "Performance Analysis of Satellite Communication Systems with Randomly Located Ground Users,"  IEEE Transactions on Wireless Communications, Vol. 21, no. 1, pp. 621-634, Jan. 2022. (DOI: 10.1109/TWC.2021.3098540[Ack:IITP ISL]
  3. Julius Ssimbwa, Byungju Lim, Ju-Hyung Lee, and Young-Chai Ko, "A survey on robust modulation requirements for the next generation personal satellite communications," Frontiers Communications and Networks: Aerial and Space Networks, Vol. 3, May 17, 2022 (https://doi.org/10.3389/frcmn.2022.850781 [Ack:IITP ISL]
  4. E. -K. Hong, I. Lee, B. Shim, Y. -C. Ko, S. -H. Kim, S. Pack, K. Lee, S. Kim, J. -H. Kim, Y. Shin, Y. Kim, H. Jung, "6G R&D vision: Requirements and candidate technologies," Journal of Communications and Networks, Vol. 24, No. 2, pp. 232-245, April 2022, (DOI: 10.23919/JCN.2022.000015)
  5. Yeongrok Lee, Ju-Hyung Lee, and Young-Chai Ko, "Beamforming Optimization for IRS-assisted mmWave V2I Communication Systems via Reinforcement Learning," IEEE Access, Vol. 10, pp. 60521-60533, Jun. 2022 (DOI: 10.1109/ACCESS.2022.3181152[Ack: ITRC]
  6. Julius Ssimbwa, Byungju Lim, and Young-Chai Ko, "GFDM frame design for low-latency industrial networks,"  Journal of Communications and Networks, Jun. 2022 (DOI: 10.23919/JCN.2021.000047[Ack: NRF BRL]
[2021]
  1. Hyunho Lee and Young-Chai Ko, "Physical Layer Enhancements for Ultra-Reliable Low-Latency Communications in 5G New Radio Systems",  IEEE Communications Standards Magazine, Vol. 5, pp. 112-122, Dec. 2021. [Ack: NRF BRL]
  2. Ha-Lim Song and Young-Chai Ko, "Beam Alignment for High-Speed UAV via Angle Prediction and Adaptive Beam Coverage," IEEE Transactions on Vehicular Technology, Vol. 70, pp. 10185-10192, Aug. 2021.  [Ack: ADD FNT]
  3. Ha-Lim Song, Sung Sik Nam, and Young-Chai Ko, "Angle-of-Arrival Estimation Technique for Fast Beamforming Using Monopulse Signal in the Antenna Array Systems", IEEE Access, Vol. 9, pp. 95346-95359, Jul. 2021. [Ack: NRF BRL]
  4. Changhwan Yi, Dongkyo Kim, Sourabh Solanki, Jae-Hong Kwon, Moonil Kim, Sanggeun Jeon, Young-Chai Ko and Inkyu Lee, "Design and Performance Analysis of THz Wireless Communication Systems for Chip-to-Chip and Personal Area Networks", IEEE Journal on Selected Areas in Communications, Vol. 39, No. 6, pp. 1785-1796, Apr. 2021.  [Ack: NRF BRL]
  5. Ha-Lim Song and Young-Chai Ko, "Robust and Low Complexity Beam Tracking with Monopulse Signal for UAV Communications, " IEEE Transactions on Vehicular Technology, Vol. 70, No. 4, pp. 3505-3513, Apr. 2021. [Ack: ADD Multibeam]
  6. Jae-Won Kim, Byungju Lim, and Young-Chai Ko, "A Rapid Serial Timing Acquisition Algorithm for Hybrid DS/FFH Packet Radio Communication," IEEE Transactions on Aerospace and Electronic Systems, Vol. 57, NO. 2, pp. 1016-1027, Apr. 2021. [Ack: NRF Mobile platform]
  7. Ju-Hyung Lee, Ki-Hong Park, Mohamed-Slim Alouini, and Young-Chai Ko, "Throughput Maximization of Mixed FSO/RF UAV-aided Mobile Relaying with a Buffer," IEEE Transactions on Wireless Communications, Vol. 20, No. 1, pp. 683-694, Jan. 2021. [Ack: NRF Mobile platform]
[2020]
    1. Kug-Jin Jung, Sung Sik Nam, Jinwoo Shin, and Young-Chai Ko, "Unified Statistical Performance of FSO Link Due to the Combined Effect of Weak Turbulence and Generalized Pointing Error with HD and IM/DD,"  Journal of Communications and Networks, Vol. 22, No. 6, pp. 476-483, Dec. 2020
    2. Jae-Hong Kwon, Jungil Cho, Byunggil Yu, Seongju Lee, Inha Jung, Chanho Hwang, and Young-Chai Ko, "Spectral and Energy Efficient Power Allocation for MIMO Broadcast Channels with Individual Delay and QoS Constraints," Journal of Communications and Networks, Vol. 22, No. 5, pp.390-398, Oct. 2020.
    3. Kug-Jin Jung, Sung Sik Nam, Mohamed-Sim. Alouini, and Young-Chai Ko, "Unified Finite Series Approximation of FSO Performance Over Strong Turbulence Combined With Various Pointing Error Conditions," in IEEE Transactions on Communications, Vol. 68, No. 10, pp. 6413-6425, Oct. 2020.
    4. Ji-Ho Lee, Sung Sik Nam, and Young-Chai Ko, "Outage Performance Analysis of Two-Way Full-Duplex DF Relaying Networks With Beamforming, " IEEE Transactions on Vehicular Technology, Vol. 69, No. 8, pp. 8753-8763,  Aug. 2020.
    5. Byungju Lim, Sung Sik Nam, Young-Chai Ko, and Mohamed-Slim Alouini, "CDF-Based Multiuser Scheduling for Downlink Non-Orthogonal Multiple Access (NOMA)," IEEE Access, Vol. 8, pp. 140533-140545, Jul. 2020.
    6. Byungju Lim, Sung Sik Nam, Young-Chai Ko, and Mohamed-Slim Alouini, "Outage Analysis for Downlink Non-Orthogonal Multiple Access (NOMA) With CDF-Based Scheduling", IEEE Wireless Communication Letters, Vol. 9, No. 6, pp. 822-825 Jun. 2020.
    7. Ju-Hyung Lee, Ki Hong Park, Mohamed-Slim. Alouini, and Young-Chai Ko, "A UAV-Mounted Free Space Optical Communication: Trajectory Optimization for Flight Time," IEEE Transactions on Wireless Communications, Vol. 19, No. 3, pp. 1610-1621, Mar. 2020. 
    [2019]
      1. Sung Sik Nam,Young-Chai Ko, Duckdong Hwang, and Mohamed-Slim. Alouini, “Systematic and unified stochastic Tool to Determine the Multidimensional Joint Statistics of Arbitrary Partial Products of Ordered Random Variables,” IEEE Access, Vol. 7, pp. 139773-139786, Sep. 2019.
      2. Byungju Lim and Young-Chai Ko, "Multiuser Interference Cancellation for GFDM With Timing and Frequency Offsets," IEEE Transactions on Communications, vol. 67, no. 6, pp. 4337-4349, Jun. 2019.
      3. Kwang Soon Kim, Dong Ku Kim, Chan-Byoung Chae, Sunghyun Choi, Young-Chai Ko, Jonghyun Kim, Yeon-Geun Lim, Minho Yang, Sundo Kim, Byungju Lim, Kwanghoon Lee, and Kyung Lin Ryu, "Ultrareliable and Low-Latency Communication Techniques for Tactile Internet Services," Proceedings of the IEEE, vol. 107, no. 2, pp. 376-393, Feb. 2019.
      [2018]
        1. Sung Sik Nam, Seyeong Choi, Duckdong Hwang, and Young-Chai Ko, "SER Analysis of Adaptive Threshold-Based Relay Selection With Limited Feedback for Type ll Relay," IEEE Access, Vol. 6, pp. 2169-3536, Dec. 2018.
        2. Sung Sik Nam, Mohamed-Slim Alouini, and Young-Chai Ko, "Performance Analysis of FD MIMO DF Cooperative Relaying Networks Using ZFBF," IEEE Access, Vol. 6, pp. 63958-63966, Oct. 2018.
        3. Sung Sik Nam, Mohamed-Slim Alouini, and Young-Chai Ko, “Performance Analysis of a Threshold-based Parallel Multiple Beam Selection Scheme for WDM FSO Systems,” IEEE Access, Vol. 6, pp. 21498-21517, Apr. 2018. 
        4. Sung-Wook Eo, Joon Goo Lee, Min-Seok Kim, and Young-Chai Ko, “ASIC Design for Real-Time One-Shot Correction of Optical Aberrations and Perspective Distortion in Microdisplay Systems,” IEEE Access, Vol. 6, pp. 19478-19490, Mar. 2018.
        [2017]
          1. Sung Sik Nam, Young-Chai Ko, and Mohamed-Slim Alouini, “Threshold-based Multiple Optical Signal Selection Scheme for Free-Space Optical Wavelength Division Multiplexing Systems,” IEEE/OSA Journal of Optical Communications and Networking, Vol. 9, No. 12, pp. 1085-1096, Dec. 2017.
          2. Byungju Lim and Young-Chai Ko, "SIR Analysis of OFDM and GFDM Waveforms with Timing Offset, CFO and Phase Noise," IEEE Transactions on Wireless Communications, Vol. 16, No. 10, pp. 6979-6990, Oct. 2017
          3. Byungju Lim and Young-Chai Ko, “Analysis of Timing and Frequency Offsets on OFDM systems for Fractional Sampling Rate,”  IEICE Transactions on Communications, Vol. E100-B, No. 10, pp. 1946-1951, Oct. 2017
          4. Jae-Hong Kwon, Young-Chai Ko, and Sung Sik Nam, "Optimal Design of Random Unitary Beamforming for Energy Efficiency in MIMO Broadcast Channels," IEEE Access, 12865-12877, Jul. 2017.
          5. Sung Sik Nam, Young-Chai Ko, and Mohamed-Slim Alouini, "New Closed-form Results on Ordered Statistics of Partial Sums of Gamam Random Variables and Its Application to Performance Evaluation in the Presence of Nakagami Fading," IEEE Access, vol. 5, pp 12820-12832, Jun. 2017.
          6. Sung Sik Nam, Young-Chai Ko, Mohamed-Slim Alouini, Seyeong Choi, "Statistical analysis on finger replacement schemes for RAKE receivers in the soft handover region with multiple BSs over i.n.d. fading channels," PLoS ONE 12(6): e0179126, Jun. 12, 2017.  
          7. Tae-Jun Lee and Young-Chai Ko, "Channel Estimation and Data Detection in the Presence of Phase Noise in MIMO-OFDM Systems with Independent Oscillators," IEEE Access, vol.5, pp.9647-9662, May 7, 2017.
          [2016]
            1. Young Jun Kim and Young-Chai Ko,"Simultaneous classical communication and quantum key distribution based on Gaussian modulated coherent states," IEICE Electronics Express, vol.13, No.16, pp.20160680, Aug 25 2016.
            2. Young-Chai Ko and Myeong-Jin Kim, "Channel Estimation and Analog Beam Selection for Uplink Multiuser Hybrid Beamforming System,"  EURASIP Journal on Wireless Communications and Networking, vol. 2016, pp.155, 2016.
            3. Kyung-Tae Jo, Young-Chai Ko and Seyeong Choi, "Channel Estimation and Performance Evaluation over Ricean Fading for Multiple-Antenna RF Beamforming," IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol. E99-A, No. 1, pp. 378-384, Jan. 2016.
            [2000-2015]
              1. Myeong-Jin Kim, Hyun-Ho Lee, and Young-Chai Ko, "Limited Feedback Design for Interference Alignment on Two-Cell Interfering MIMO-MAC," IEEE Transactions on Vehicular Technology, Vol. 64, No. 9, pp. 4019-4030 , Sep. 2015
              2. Hyun-Ho Lee, Myeong-Jin Kim, and Young-Chai Ko, "Transceiver Design Based on Interference Alignment in MIMO Interfering Broadcast Channels," IEEE Transactions on Wireless Communications, Vol. 13, No. 11, pp. 6474-6483, Nov. 2014
              3. Myeong-Jin Kim, Hyun-Ho Lee, and Young-Chai Ko, "Robust Transceiver Design Based on Joint Signal and Interference Alignment for MIMO Interference Channels with Imperfect Channel Knowledge," IEEE Communications Letters, Vol. 18, No. 11, pp. 2035-2038, Nov. 2014
              4. Hyun-Ho Lee, Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, "Codebook-Based Interference Alignment for Uplink MIMO Interference Channels," Journal of Communicaitons and Networks, Vol. 16, No. 1, pp. 18-25, Feb. 2014
              5. Hyun-Ho Lee, Young-Chai Ko, and Hong-Chuan Yang, "On Robust Weighted Sum Rate Maximization for MIMO Interfering Broadcast Channels with Imperfect Channel Knowledge," IEEE Communications Letters, Vol. 17, No. 6, pp. 1156-1159, Jun. 2013
              6. Myeong-Jin Kim, Hyun-Ho Lee, Young-Chai Ko, and Taehyun Jeon, "Node Pair Selection Schemes Using Interference Alignment in MIMO Interference Channel with Cooperation," IEICE Transactions on Communications, Vol. E96-B, No. 6, pp. 1502-1510, Jun. 2013
              7. Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, "On the Power and Offset Allocation for Rate Adaptation of Spatial Multiplexing in Optical Wireless MIMO Channels," IEEE Transactions on Communications, Vol. 61, No. 4, pp. 1535-1543, Apr. 2013
              8. Jae-Woo Kwon, Ki-Hong Park, Young-Chai Ko, and Hong-Chuan Yang, "Cooperative Joint Precoding in a Downlink Cellular System with Shared Relay: Design and Performance Evaluation," IEEE Transactions on Wireless Communications, Vol. 11, No. 10, pp. 3462-3473, Oct. 2012
              9. Hyun-Ho Lee and Young-Chai Ko, "Non-Iterative Symbol-Wise Beamforming for MIMO-OFDM Systems," IEEE Transactions on Wireless Communications, Vol. 11, No. 10, pp. 3788-3798, Oct. 2012
              10. Seong-Ho Park, Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, "Alternate Transmission Relaying Based on Interference Alignment in 3-Relay Half-Duplex MIMO Systems," IEEE Journal on Selected Areas in Communications, Vol. 30, No. 8, pp. 1383-1389, Sep. 2012
              11. Seung-Sik Eom, Haewoon Nam, and Young-Chai Ko, "Low-Complexity PAPR Reduction Scheme Without Side Information for OFDM Systems," IEEE Transactions on Signal Processing, Vol. 60, No. 7, pp. 3657-3669, Jul. 2012
              12. Jin-Hee Lee and Young-Chai Ko, “Adaptive Spatial Other Cell Interference Cancelation for Multiuser Multi-Cell Cooperating System,” IEICE Transactions on Communications, Vol. E94-B, No. 12, pp. 3232-3238, Dec. 2011
              13. Sung-Il Kim, Young-Chai Ko, and Jun Heo, “Outage Analysis of Amplify-and-Forward Partial Relay Selection Scheme with Multiple Interferers,” IEEE Communications Letters, Vol. 15, No. 12, pp. 1281-1283, Dec. 2011
              14. Hyun-Ho Lee and Young-Chai Ko, “Low Complexity Codebook-Based Beamforming for MIMO-OFDM Systems in Millimeter-Wave WPAN,” IEEE Transactions on Wireless Communications, Vol. 10, No. 11, pp. 3607-3612, Nov. 2011
              15. Hong-Chuan Yang, Peng Lu, Hyung-Ki Sung, and Young-Chai Ko, “Exact Sum-Rate Analysis of MIMO Broadcast Channels with Random Unitary Beamforming,” IEEE Transactions on Communications, Vol. 59, No. 11, pp. 2982-2986, Nov. 2011
              16. Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, “On the Diversity Enhancement and Power Balancing of Per-subcarrier Transmit Antenna Selection in OFDM Systems,” IEEE Transactions on Vehicular Technology, vol. 60, no.5, pp.2405-2410, Jun. 2011
              17. Kyu-Sung Hwang, Young-Chai Ko, and Mohamed-Slim Alouini, “Performance Analysis of Two-Way Amplify and Forward Relaying with Adaptive Modulation over Multiple Relay Network”, IEEE Transactions on Communications, Vol. 59, No. 2, pp. 402-406, Feb. 2011
              18. Jae-Woo Kwon, Young-Chai Ko, and Hong-Chuan Yang, "Maximum Spectral Efficiency of Amplify-and-Forward Cooperative Transmission with Multiple Relays", IEEE Transactions on Wireless Communications, Vol. 10, No. 1, pp. 49-54, Jan. 2011
              19. Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, “Low Complexity Transmit Antenna Selection with Power Balancing in OFDM Systems”, IEEE Transactions on Wireless Communications, Vol. 9, No. 10, pp. 3018-3023, Oct. 2010
              20. Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, “Low Complexity Non-Iterative Coordinated Beamforming in 2-User Broadcast Channels”, IEEE Transactions on Communications, Vol. 58, No. 10, pp. 2810-2815, Oct. 2010
              21. Sang-Do Lee and Young-Chai Ko, “Joint Variable Threshold M-QAM and ARQ for Nakagami-m Fading Channel with Feedback Delay”, IEEE Communications Letters, Vol. 14, No. 2, pp. 139-141, Feb. 2010
              22. Peng Lu, Hong-Chuan Yang, and Young-Chai Ko, “Performance Analysis for RUB-Based Multiuser MIMO Systems With Antenna Diversity Techniques”, IEEE Transactions on Vehicular Technology, Vol. 59, No. 1, pp. 490-494, Jan. 2010
              23. Sang-Do Lee, Young-Chai Ko, Jeong-Jae Won, and Taehyun Jeon, “Joint Adaptive M-QAM and Selection Combining in SVD-Based MIMO Systems”, IEICE Transactions on Communications, Vol. E92-B, No. 12, pp. 3950-3952, Dec. 2009
              24. Sang-Do Lee and Young-Chai Ko., “Joint Selection Combining and Power Loading Transmission with Adaptive M-QAM in Multichannel System”, IEEE Transactions on Vehicular Technology, Vol. 58, No. 7, pp. 3819-3825, Sep. 2009
              25. Sang-Do Lee and Young-Chai Ko, “Exact Performance Analysis of Hybrid Adaptive Modulation Schemes in Multi-Channel System”, IEEE Transactions on Wireless Communications, Vol. 8, No. 6, pp. 3206-3215, Jun. 2009
              26. Kyu-Sung Hwang, Young-Chai Ko, and Mohamed-Slim Alouini, “Performance Analysis of Incremental Opportunistic Relaying over Identically and Non-Identically Distributed Cooperative Paths”. IEEE Transactions on Wireless Communications, Vol.8, No.4, pp. 1953-1961, Apr. 2009
              27. Sang-Ho Choi, Jun Heo, and Young-Chai Ko “Implementation-Friendly QRM-MLD Using Trellis-Structure Based on Viterbi Algorithm”. Journal of Communications and Networks, Vol. 11, No. 1, pp. 20-25, Feb. 2009
              28. Kyu-Sung Hwang, Young-Chai Ko, and Mohamed-Slim Alouini, "Outage Probability of Cooperative Diversity Systems with Opportunistic Relaying Based on Decode-and-Forward", IEEE Transactions on Wireless Communications, Vol. 7, No. 12, pp. 5100–5107, Dec. 2008
              29. Hyung-Ki Sung, Jinhee Lee, and Young-Chai Ko, “Performance analysis of random unitary beamforming multi-user MIMO systems”, IEICE Electronics Express, Vol. 5, No. 23, pp. 995-1001, Dec. 2008
              30. Ki-Hong Park, Hong-Chuan Yang, and Young-Chai Ko., “Performance Analysis of Transmit Diversity Systems with Multiple Antenna Replacement”, IEICE Transactions on Communications, Vol. E91-B, No. 10, pp. 3281-3287, Oct. 2008
              31. Haewoon Nam, Young-Chai Ko, and Mohamed-Slim Alouini, “Performance analysis of joint switched diversity and adaptive modulation”, IEEE Transactions on Wireless Communications, Vol. 7, No. 10, pp. 3780-3790, Oct. 2008
              32. Cheon Ho Lee, Young-Chai Ko, and Jun Heo, “Multiple scaling extrinsic soft information for improved min-sum iterative decoding of LDPC codes”, IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E91-A, No. 10, pp. 2874-2876, Oct. 2008
              33. Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, "Joint Adaptive Combining and Multiuser Downlink Scheduling", IEEE Transactions on Vehicular Technology, Vol. 57, No. 5, pp. 2958-2968, Sep. 2008
              34. Seyeong Choi, Hong-Chuan Yang, and Young-Chai Ko, “Performance Analysis of Transmit Diversity Systems with Antenna Replacement”, IEEE Transactions on Vehicular Technology, Vol. 57, No. 4, pp.2588-2595, Jul. 2008
              35. Haewoon Nam, Young-Chai Ko, and Mohamed-Slim Alouini, “Spectral Efficiency Enhancement in Multi-Channel Systems Using Redundant Transmission and Diversity Reception”, IEEE Transactions on Wireless Communications, Vol. 7, No. 6, pp. 2143-2153, Jun. 2008
              36. Young-Chai Ko, Hong-Chuan Yang, Seung-Sik Eom, and Mohamed-Slim Alouini, “Adaptive Modulation with Diversity Combining Based on Output-Threshold MRC”, IEEE Transactions on Wireless Communications, Vol. 6, No. 10, pp. 3728-3737, Oct. 2007
              37. Young-Chai Ko and Mohamed-Slim Alouini., “Local mean signal estimation over Nakagami-m fading channels”, Wireless Communications and Mobile Computing, Vol. 7, No. 3, pp. 367-374, Mar. 2007
              38. Seyeong Choi, Young-Chai Ko, and Edward J. Powers, “Optimization of Switched MIMO Systems Over Rayleigh Fading Channels“, IEEE Transactions on Vehicular Technology, Vol. 56, No. 1, pp. 103-115, Jan. 2007 
              39. Seyeong Choi and Young-Chai Ko, “Performance of Selection MIMO Systems with Generalized Selection Criterion over Nakagami-m Fading Channels”, IEICE Transactions on Communications, Vol. E89-B, No. 12, pp. 3467-3470, Dec. 2006
              40. Haewoon Nam, Young-Chai Ko, and Baxter F. Womack, “Performance Analysis of OT-MRC Over I.I.D. Nakagami and Non-I.I.D. Rayleigh Fading Channels”, IEEE Transactions on Vehicular Technology, Vol. 55, No. 6, pp. 1941-1946, Nov. 2006
              41. Young-Chai Ko and Tao Luo, “Effect of Noise Imbalance on Dual-MRC over Rayleigh Fading Channels”, IEEE Transactions on Wireless Communications, Vol. 5, No. 3, pp. 514-518, Mar. 2006
              42. Young-Chai Ko, “Doppler Spread Estimation in Mobile Communication Systems”, IEICE Transactions on Communications , Vol. E88-B, No. 2, pp. 724-728, Feb. 2005
              43. Tao Luo and Young-Chai Ko, “Pilot Diversity Channel Estimation in Power-Controlled CDMA systems“, IEEE Transactions on Vehicular Technology, Vol. 53, No.2, pp.559-563, Mar. 2004
              44. Ji-Young Byun, Young-Chai Ko, and Kwan-Ho You, “Optimized Power Control Using LQ Scheme for CDMA Systems”, IEICE Transactions on Fundamentals, Vol. E87-A, No. 11, pp. 2909-2912, Nov. 2004
              45. Xiaoyuan Qi, Mohamed-Slim Alouini, and Young-Chai Ko, “Closed-Form Analysis of Dual-Diversity Equal-Gain Combining over Rayleigh Fading Channels”, IEEE Transactions on Wireless Communications, Vol. 2, No. 6, pp. 1120-1125, Nov. 2003
              46. Young-Chai Ko and Mohamed-Slim Alouini, “Estimation of Nakagami-m Fading Channel Parameters with Application to Optimized Transmit Diversity Systems“, IEEE Transactions on Wireless Communications, Vol. 2, No. 2, pp. 250-259, Mar. 2003
              47. Young-Chai Ko, Ali Abdi, Mohamed-Slim Alouini, and Mostafa Kaveh, “A General Framework for Calculation of the Average Outage Duration of Diversity Systems Over Generalized Fading Channels”, IEEE Transactions on Vehicular Technology, Vol. 51, No. 6, pp.1672-1680, Nov. 2002
              48. Young-Chai Ko, Mohamed-Slim Alouini, and Marvin K. Simon, “Outage Probability of Diversity Systems over Generalized Fading Channels”, IEEE Transactions on Communications, Vol. 48, No. 11, pp.1783-1787, Nov. 2000
              49. Young-Chai Ko, Mohamed-Slim Alouini, and Marvin K. Simon, “Analysis and Optimization of Switched Diversity Systems”, IEEE Transactions on Vehicular Technology, Vol. 49, No. 5, pp.1813-1831, Sep. 2000
              50. Young-Chai Ko, Mohamed-Slim Alouini, and Marvin K. Simon, “Average SNR of Dual Selection Combining over Correlated Nakagami-m Fading Channels”, IEEE Communications Letters, Vol. 4, No. 1, pp. 12-14, Jan. 2000


              International Conference Papers
              1. Jong-Min Kim, Ju-Hyung. Lee, Yeongrok Lee, Hong-seol Cha, Hyunsu Park, Jincheol Sim, Chulwoo Kim and Young-Chai Ko, “Experimental Demonstration of RoFSO Transmission Combining WLAN Standard and WDM-FSO over 100m Distance,” in Proc. IEEE INFOCOM 2022 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS), Virtual Conference, May 2-5, 2022.  [Ack: NRF BRL]
              2. Byungju Lim and Young-Chai Ko, "Link Association for Small Cell Networks with Wireless Backhaul," in Proc. IEEE International Conference on ICT Convergence 2021 (ICTC), Jeju Island, Korea, Oct. 20-22, 2021. [Ack: ADD FNT]
              3. Ha-Lim Song and Young-Chai Ko, "Adaptive Beamforming Design for Angular Dynamics in High-Speed Mobility," in Proc. IEEE International Conference on ICT Convergence 2021 (ICTC), Jeju Island, Korea, Oct. 20-22, 2021. [Ack: ADD FNT]
              4. Ju-Hyung Lee and Young-Chai Ko, "Optimization for LEO Satellite-Ground Integrated Networks via Deep Reinforcement Learning," in Proc. IEEE International Conference on ICT Convergence 2021 (ICTC), Jeju Island, Korea, Oct. 20-22, 2021. (Best Paper Award)
              5. Jong-Min Kim, Ju-Hyung. Lee and Young-Chai Ko, "Position-Error Compensation Method for FSO using Two-Step Search," in Proc. 2021 International Conference on Information and Communication Technology Convergence (ICTC), Jeju Island, Korea, Oct. 20-22, 2021. [Ack: NRF BRL]
              6. Jong-Min Kim, Ju-Hyung. Lee and Young-Chai Ko, "Demo Abstract: WLAN Standard-based Non-Coherent FSO Transmission over 100m Indoor and Outdoor Environments," in Proc. IEEE INFOCOM 2021 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS), Virtual Conference, May 10-13, 2021. [Ack: NRF BRL]
              7. Ju-Hyung Lee, Jihong Park, Mehdi Bennis, and Young-Chai Ko, "Integrating LEO Satellite and UAV Relaying via Reinforcement Learning for Non-Terrestrial Networks," in Proc. IEEE GLOBECOM, Taipei, Taiwan, Dec. 8-10, 2020.
              8. Changhwan Yi, Dongkyo Kim, Sourabh Solanki, Jae-Hong Kwon, Moonil Kim, Sanggeun Jean, Young-Chai Ko, and Inkyu Lee, "THz Wireless Systems Design for Personal Area Networks Applications," in Proc. IEEE International Conference on ICT Convergence 2020 (ICTC), Jeju Island, Korea, Oct. 21-23, 2020.
              9. Kug-Jin Jung, Jong-Min Kim, and Young-Chai Ko, "Investigation of Boresight and Jitter in Free Space Optical Communications with pointing error and Weak Turbulence, " in Proc. IEEE International Conference on ICT Convergence 2020 (ICTC), Jeju Island, Korea, Oct. 21-23, 2020.
              10. Ha-Lim Song, Young-Chai Ko, Jungil Cho, and Chanho Hwang, "Beam Tracking Algorithm for UAV Communications Using Kalman Filter," in Proc. IEEE International Conference on ICT Convergence 2020 (ICTC), Jeju Island, Korea, Oct. 21-23, 2020.
              11. Ji-Ho Lee and Young-Chai Ko, "Beamforming design for Full-Duplex DF Relaying Networks, " in Proc. IEEE International Conference on ICT Convergence 2020 (ICTC), Jeju Island, Korea, Oct. 21-23, 2020.
              12. Ju-Hyung Lee and Young-Chai Ko, "Cells on Network Flying Platforms: Optimal Resource Allocation and Deployment for Sensor Network," in Proc. IEEE International Conference on ICT Convergence 2020 (ICTC), Jeju Island, Korea, Oct. 21-23, 2020.
              13. Ju-Hyung Lee, Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, "Optimal Resource Allocation and Placement for Terrestrial and Aerial Base Stations in Mixed RF/FSO Backhaul Networks, " in Proc. IEEE Vehicular Technology Conference (VTC 2020-Spring), Antwerp, Belgium, May. 25-28, 2020.
              14. Ju-Hyung Lee, Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, "Free Space Optical Communication on UAV-Assisted Backhaul Networks: Optimization for Service Time,” in Proc. IEEE GLOBECOM Workshops, Waikoloa, HI, USA, Dec. 9-13, 2019.
              15. Kug-Jin Jung, Sung Sik Nam, and Young-Chai Ko, "Unified Statistical Channel Model of Ship (or Shore)-to-Ship FSO Communications with Pointing Errors," in Proc. IEEE Conference on Standards for Communications and Networking (CSCN), Granada, Spain, Oct. 28-30, 2019.
              16. Jae-Hong Kwon and Young-Chai Ko, "Energy Efficient Power Allocation for Multi-User MIMO Downlink Systems with Statistical Delay Constraints," in Proc. IEEE Conference on Standards for Communications and Networking (CSCN), Granada, Spain, Oct. 28-30, 2019.
              17. Ha-Lim Song, Sung Sik Nam, and Young-Chai Ko, "Angle-of-Arrival Estimation in Antenna Arrays based on Monopulse Signal," in Proc. IEEE International Conference on Ubiquitous and Future Networks (ICUFN), Zagreb, Croatia, July 2-5, 2019.
              18. Ju-Hyung Lee, Ki-Hong Park, Mohamed-Slim Alouini, and Young-Chai Ko, "On the Throughput of Mixed FSO/RF UAV-Enabled Mobile Relaying Systems with a Buffer Constraint," in Proc. IEEE International Conference on Communications (ICC), Shanghai, China, May 20-24, 2019.
              19. Byungju Lim, Sung Sik Nam, Mohamed-Slim Alouini, and Young-Chai Ko, "The performance of A CDF-Based Multiuser Scheduling Scheme for Non-Orthogonal Multiple Access (NOMA)," in Proc. IEEE International Conference on Communications (ICC), Shanghai, China, May 20-24, 2019.
              20. Yeongrok Lee, Sung Sik Nam and Young-Chai Ko, "Implementation of Multiple Signal Classification and Triangulation for Localization of Signal using Universal Software Radio Peripheral," in Proc. IEEE International Conference on Computer and Communication Systems (ICCCS), Singapore, Feb. 23-25, 2019.
              21. Sung-Wook Eo, Wook Hong, Ho Kwon Kim, and Joon Goo Lee, “Video upscaling on a panel for high resolution microdisplay systems,” in Proc. International Meeting on Information Display (IMID), Busan, Korea, Aug. 28-31,  2018.
              22. Kug-Jin Jung, Sung Sik Nam, and Young-Chai Ko, "Impact of Both Nonzero Boresight and Jitter Pointing Error on Outage Capacity of FSO Communication Systems over Strong Turbulence," in Proc. International Conference on Ubiquitous and Future Networks (ICUFN) Workshops, Prague, Czech Republic, July 3-6, 2018.
              23. Ju-Hyung Lee, Ki-Hong Park, Mohamed-Slim Alouini, and Young-Chai Ko, "Trajectory Optimization of Energy Efficient FSOC-UAV with Atmospheric and Geometric Loss," in Proc. International Conference on Ubiquitous and Future Networks (ICUFN)  Workshops, Prague, Czech Republic, July 3-6, 2018.
              24. Sung Sik Nam, Ju-Hyung Lee, Chang Seok Yoon, and Young-Chai Ko, "BER Analysis of Wavelength Division Multiplexing-Based Multiple Beam Scheduling Scheme based on Gamma Approximation Channel," in Proc. International Conference on Ubiquitous and Future Networks (ICUFN)  Workshops, Prague, Czech Republic, July 3-6, 2018.
              25. Kug-Jin Jung, Sung Sik Nam, Young-Chai Ko, and Mohamed-Slim Alouini, "BER Performance of FSO Links Over Unified Channel Model for Pointing Error Models," in Proc. International Conference on Communications (ICC) Workshops, Kanasas City, USA, May 21-24, 2018
              26. Byungju Lim and Young-Chai Ko, "Optimal Receiver Filter for GFDM with Timing and Frequency Offsets in Uplink Multiuser Systems," in Proc. IEEE Wireless Communications and Networking Conference (WCNC), Barcelona, Spain, Apr. 15-18, 2018.
              27. Sungkyong Cho, Sung Sik Nam, and Young-Chai Ko, "SINR based Antenna Selection for Hybrid Beamforming in mmWave Massive MIMO systems," in Proc. International Conference on Green and Human Information Technology (ICGHIT), Chiang Mai, Thailand, Jan.31-Feb.2, 2018.
              28. Sung Sik Nam, Byungju Lim, Mohamed-Slim Alouini, and Young-Chai Ko, “Symbol Error Rate Analysis of Adaptive Threshold Based Relay Selection with 2-Bits Feedback for Type-2 Relays,” in Proc. The Eleventh International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies (UBICOMM), Barcelona, Spain, Nov. 2017. 
              29. Sung-Wook Eo, Joon Goo Lee, Min-Seok Kim, and Young-Chai Ko, “High performance and low power timing controller design for LCoS microdisplay system,” in 2017 International SoC Design Conference (ISOCC), Nov 2017, pp. 71–72.
              30. Sung Sik Nam, Young-Chai Ko and Mohamed-Slim Alouini,  "Mellin-Transform-Based New Results of the Joint Statistics of Partial Products of Ordered Random Variables," in Proc. IEEE International Symposium on Information Theory (ISIT), Aachen, Germany, June 25-30, 2017. 
              31. Ji-Ho Lee, Yeongrok Lee, and Young-Chai Ko, "Hybrid Beamforming Design for Uplink Multiuser Massive MIMO Systems," in Proc. IEEE Vehicular Technology Society Asia Pacific Wireless Communications Symposium (VTS-APWCS), Incheon, Korea. 
              32. Jae-Hong Kwon, Dong-Hyoun Na, and Young-Chai Ko, "Two-ray Model Based mmWave Channel Modeling for Long-distance Wireless Communications," in Proc. IEEE Vehicular Technology Society Asia Pacific Wireless Communications Symposium (VTS-APWCS), Incheon, Korea. 
              33. Ji-Ho Lee, Myeong-Jin Kim, and Young-Chai Ko, "IA-based Hybrid Beamforming Design in MIMO Interference Channel," in Proc. IEEE Internatinal Conference on Advanced Communications Technolongy (ICACT), Pyeongchang, Korea, Feb. 19-22, 2017.
              34. Sung-Kyung Jo and Young-Chai Ko, "Antenna Selection using Maximum Channel Gain for Massive MIMO System," in Proc. International Conference on Electronics, Information, and Communication (ICEIC), Phuket, Thailand, Jan. 12, 2017
              35. YoungJun Kim and Young-Chai Ko, "Cramer-Rao Lower Bound of Channel Estimator in Continuous Variable Quantum Key Distribution," in Proc. International Conference on ICT Convergence 2016 (ICTC), Jeju Island, Korea, Oct. 19-21, 2016
              36. Min-Hwa Jeong, Tae-Jun Lee and Young-Chai Ko, "Effects of Phase Noise on the Performance of Multi-User Downlink MIMO-OFDM AF Relay Systems," in Proc. International Conference on ICT Convergence 2016 (ICTC), Jeju Island, Korea, Oct. 19-21, 2016
              37. Jaehyung Choi, Jae-Hong Kwon and Young-Chai Ko, "CFO and Channel Estimation Schemes for Multi-User Massive MIMO Systems in High Mobility Environment," in Proc. IEEE Conference on Standadrs for Communication and Networking(CSCN), Berlin, Germany, 31 Oct-2 Nov, 2016
              38. Tae-Jun Lee, Min-Hwa Jeong and Young-Chai Ko, "Phase noise mitigation in MIMO-OFDM systems with independent oscillators," in Proc. IEEE Conference on Standards for Communication and Networking(CSCN), Berlin, Germany, 31 Oct-2 Nov, 2016
              39. Jae-Hong Kwon, Young-Chai Ko and Hong-Chuan Yang, "Optimizing Random Unitary Beamforming for Energy Efficiency in MIMO Broadcast Channels," in Proc. IEEE Vehicular Technology Conference (VTC 2016-fall), Montreal, Canada, Sep. 18-21, 2016.
              40. YoungJun Kim and YoungChai Ko, "Quantum Hexagonal Quadrature Amplitude Modulation," in Proc. International Conference on Quantum, Nano, and Micro Technologies(ICQNM), Nice, France, July 24~28, 2016
              41. Sung-Wook Eo, Joon Goo Lee, Wook Hong, Young-Chai Ko, and Min-Seok Kim, “A Novel Architecture and Algorithm for Real-Time Correction of Pincushion Distortion in Microdisplay Systems,” in SID International Symposium Digest of Technical Papers, vol.47, May 2016, pp.1297–1300.
              42. Jae-Hong Kwon and Young-Chai Ko, "Optimal Number of Antennas for Energy Efficiency in Downlink MISO Systems," in Proc. International Conference on Electronics, Information and Communication (ICEIC), Danang, Vietnam, Jan. 27-30, 2016.
              43. Tae-Jun Lee and Young-Chai Ko, "Phase Noise Cancellation in MIMO-OFDM Systems with Independent Oscillators," in Proc. International Conference on Electronics, Information and Communication (ICEIC), Danang, Vietnam, Jan. 27-30, 2016.
              44. Byung-Ju Lim and Young-Chai Ko, "Performance Comparisons between OFDM and GFDM with Timing Synchronization Errors," in Proc. International Conference on Electronics, Information and Communication (ICEIC), Danang, Vietnam, Jan. 27-30, 2016.
              45. Jae-Hyung Choi and Young-Chai Ko, "Impact of Frequency Synchronization Errors on Generalized Frequency Division Multiplexing," in Proc. International Conference on Electronics, Information and Communication (ICEIC), Danang, Vietnam, Jan. 27-30, 2016.
              46. Min-Hwa Jeong and Young-Chai Ko, "Effect of Phase Noise in GFDM Systems," in Proc. International Conference on Electronics, Information and Communication (ICEIC), Danang, Vietnam, Jan. 27-30, 2016.
              47. Myeong-Jin Kim and Young-Chai Ko, "Low Complexity Analog Beam Selection for Uplink Multiuser Hybrid Beamforming System," in Proc. IEEE Global Communications Conference (GLOBECOM) Workshops, San Diego, CA, USA, Dec. 6-10, 2015.
              48. Min-Hwa Jeong, Myeong-Jin Kim, Tae-Jun Lee and Young-Chai Ko, "Effect of Phase Noise in IEEE 802.11ad MIMO-OFDM Systems with Common/Independent Local Oscillators," in Proc. International Conference on ICT Convergence 2015 (ICTC 2015) -Workshop Ⅵ - Enabling Techniques for Future Mobile Communications (5G/6G) Part Ⅱ, Jeju Island, Korea, Oct. 28-30, 2015.
              49. Jae-Hyung Choi, Byung-Ju Lim, Young Jun Kim and Young-Chai Ko, "Effect of Timing and Frequency Synchronization Errors on GFDM Systems," in Proc. International Conference on ICT Convergence 2015 (ICTC 2015) -Workshop Ⅵ - Enabling Techniques for Future Mobile Communications (5G/6G) Part Ⅱ, Jeju Island, Korea, Oct. 28-30, 2015.
              50. Myeong-Jin Kim, Hyun-Ho Lee, and Young-Chai Ko, "Interference Alignment Scheme Based on Limited Feedback for Two-Cell Interfering MIMO-MAC,"  in Proc. IEEE Vehicular Technology Conference (VTC 2015-Spring), Glasgow, Scotland, May. 11-14, 2015.
              51. Jae-Hong Kwon, Ji-Ho Lee, Myeong-Jin Kim, and Young-Chai Ko, "Effect of Pilot Contamination in Massive MIMO Systems with Matched Filter and Zero-Forcing Precoding over Rayleigh Channels," in Proc. International Conference on Electronics, Information and Communication (ICEIC), Singapore, Jan. 28-31, 2015
              52. Ji-Ho Lee, Young-Jun Kim, and Young-Chai Ko, "Effect of Line-of-Sight Wave on Performance of Simple Matched Filter in Massive MIMO Systems," in Proc. International Conference on Electronics, Information and Communication (ICEIC), Singapore, Jan. 28-31, 2015
              53. Sung-Kyung Jo, Kyung-Tae Jo, and Young-Chai Ko, "RF Output-Threshold Maximal-Ratio Combining for Massive MIMO Systems", in Proc. International Conference on Electronics, Information and Communication (ICEIC), Singapore, Jan. 28-31, 2015
              54. Myeong-Jin Kim, and Young-Chai Ko, "Sequential Transceiver Design Based on Block Diagonalization and Interference Alignment for Full Duplex Multiuser MIMO System", Accepted for Publication in Proc. International Conference on ICT Convergence 2014 (ICTC), Busan, Korea, Oct. 22-24, 2014
              55. Seong-Ho Park, Myeong-Jin Kim, and Young-Chai Ko,  "Resource Allocation for Spatial-Frequency Domain Based Interference Alignment Scheme in MIMO-OFDM Systems", in Proc. IEEE International Conference on Communications (ICC), Sydney, Australia, Jun. 10-14, 2014
              56. Ka-young Seo, Ki-man Kim, Myeong-Jin Kim, Sung-Wook Eo and Young-chai Ko, "Analysis of Channel Interference in LTE Systems", in Proc. International Conference on Electronics, Information and Communication (ICEIC), Kota Kinabalu, Sabah, Malaysia, Jan. 15-18, 2014
              57. Kiman Kim, Myeong-Jin Kim, Jun Heo and Young-Chai Ko, "Effect of Interference for Multiple-operator LTE Systems", in Proc. International Conference on Electronics, Information and Communication (ICEIC), Kota Kinabalu, Sabah, Malaysia, Jan. 15-18, 2014
              58. Seong-Ho Park, Young-Chai Ko, Ki-Hong Park, and Mohamed-Slim Alouini, “Alternate Transmission with Half-Duplex Relaying in MIMO Interference Relay Networks", in Proc. IEEE Global Communications Conference (GLOBECOM), Atlanta, GA, USA, Dec. 9-13, 2013
              59. Myeong-Jin Kim, Young-Chai Ko, and Hyun-Ho Lee, "Uplink Interference Coordination for Two-Tier MIMO Networks", in Proc. the 9th International Conference on Information, Communications and Signal Processing (ICICS), Tainan, Taiwan, Dec. 10-13, 2013
              60. Youngjun Kim and Young-Chai Ko, "Detection of Quantum Circular QAM Signals", in Proc. International Conference on ICT Convergence 2013 (ICTC), Jeju Island, Korea, Oct. 14-16, 2013
              61. Jun-Ho Jo, Kyung-Tae Jo, Young-Chai Ko and Seyeong Choi, "Optimal sounding signal design based on MMSE criterion in OFDM system", in Proc. International Conference on ICT Convergence 2013 (ICTC), Jeju Island, Korea, Oct. 14-16, 2013
              62. Myeong-Jin Kim, Young-Chai Ko, and Hyun-Ho Lee, "Channel selection algorithms based on interference alignment in MIMO interfering broadcast channels", in Proc. International Conference on ICT Convergence 2013 (ICTC), Jeju Island, Korea, Oct. 14-16, 2013
              63. Myeong-Jin Kim, Young-Chai Ko, and Hyun-Ho Lee, "Filter Design of Interference Alignment Scheme with Limited Feedback for Two-Cell Interfering MIMO-MAC", in Proc. IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), London, UK, Sep. 8-11, 2013
              64. Hyun-Ho Lee, Myeong-Jin Kim, and Young-Chai Ko, "Transceiver Design Based on Interference Alignment for MIMO Interfering Broadcast Channels", in Proc. IEEE Global Communications Conference (GLOBECOM), Anaheim, CA, USA, Dec. 3-7, 2012
              65. Kwang-Sik Choi, Hyun-Ho Lee, and Young-Chai Ko, "Outage Probability of Decode-and-Forward Relaying System with Weibull Distributed Multiple Co-Channel Interferences", in Proc. IEEE GLOBECOM Workshops, Anaheim, CA, USA, Dec. 3-7, 2012
              66. Kwang-Sik Choi, Hyun-Ho Lee, and Young-Chai Ko, "Outage Probability of an Amplify-and-Forward Relaying System in an Interference-Limited Weibull Fading Environment", in Proc. IEEE International Conference on Wireless Information Technology and Systems (ICWITS), Maui, HI, USA, Nov. 11-16, 2012
              67. Myeong-Jin Kim, Hyun-Ho Lee, and Young-Chai Ko, "Node Pair Selection Schemes in MIMO Interference Channel Using Interference Alignment", in Proc. Asia-Pacific Conference on Communications (APCC), Jeju, Korea, Oct. 15-17, 2012 
              68. Jin-Hee Lee, Hyun-Ho Lee, Young-Chai Ko, and Seyeong Choi, "Two-way Relaying based Two-hop Two-user MIMO System", in Proc. Asia-Pacific Conference on Communications (APCC), Jeju, Korea, Oct. 15-17, 2012
              69. Hyun-Ho Lee and Young-Chai Ko, “Linear Transceiver Design Based on Interference Alignment for MIMO Heterogeneous Networks”, in Proc. IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), Sydney, Australia, Sep. 9-12, 2012
              70. Hyun-Ho Lee and Young-Chai Ko, “Interference Alignment with Random Vector Quantization for MIMO Interference Channels”, in Proc. IEEE Vehicular Technology Conference (VTC 2012-Fall), Quebec City, Canada, Sep. 3-6, 2012
              71. Jae-Woo Kwon, Seong-Ho Park, and Young-Chai Ko, “Inter-Cell Interference Cancelation Schemes Using Alternate Relay Transmission”, in Proc. IEEE Vehicular Technology Conference (VTC 2012-Spring), Yokohama, Japan, May 6-9, 2012
              72. Myeong-Jin Kim, Hyun-Ho Lee, and Young-Chai Ko, Seungkeun Park, “Novel Node Pair Selection Algorithms for Sum-Rate Enhancement in MIMO Interference Channel”, in Proc. the 8th International Conference on Information, Communications and Signal Processing (ICICS), Singapore, Dec. 13-16, 2011
              73. Seong-Ho Park, Young-Chai Ko, Ki-Hong Park, and Mohamed-Slim Alouini, “Interference Alignment for Degrees of Freedom Improvement in 3-Relay Half-Duplex Systems”, in Proc. the 8th International Conference on Information, Communications and Signal Processing (ICICS), Singapore, Dec. 13-16, 2011
              74. Hyun-Ho Lee, Ki-Hong Park, Hong-Chuan Yang, and Young-Chai Ko, “Low Complexity Symbol-Wise Beamforming for MIMO-OFDM Systems”, in Proc. IEEE Global Communications Conference (GLOBECOM), Houston, TX, USA, Dec. 5-9, 2011
              75. Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, “A Novel Power and Offset Allocation Method for Spatial Multiplexing MIMO Systems in Optical Wireless Channels”, Pin roc. IEEE GLOBECOM Workshops, Houston, TX, USA, Dec. 5-9, 2011
              76. Jinhee Lee, Young-Chai Ko, Seyeong Choi, and Hong-Chuan Yang, “Coordinated Multi-Cell MU-MIMO Downlink Transmission with Adaptive Beam Deactivation”, in Proc. IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), Shanghai, China, Oct. 10-12, 2011
              77. Jae-Woo Kwon, Ki-Hong Park, Young-Chai Ko, and Hong-Chuan Yang, “Cooperative Joint Precoding for Relay Enhanced Cellular System over Nakagami-m Fading Channels”, in Proc. IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), Shanghai, China, Oct. 10-12, 2011
              78. Jae-Woo Kwon, Ki-Hong Park, Young-Chai Ko, and Hong-Chuan Yang, “Cooperative Joint Precoding for Relay Enhanced Cellular System: Design and Performance Evaluation", in Proc. International Wireless Communications and Mobile Computing Conference (IWCMC), Istanbul, Turkey, Jul. 4-8, 2011
              79. Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, “On the Power and Offset Allocation for Rate Adaptation of Spatial Multiplexing in Optical Wireless MIMO Channels", in Proc. International Wireless Communications and Mobile Computing Conference (IWCMC), Istanbul, Turkey, Jul. 4-8, 2011
              80. Seung-Sik Eom and Young-Chai Ko, “A Novel PAPR Reduction Scheme with Low Complexity in Time Domain for OFDM System”, in Proc. IEEE International Conference on Communications (ICC), Kyoto, Japan, Jun. 5-9, 2011
              81. Seong-Ho Park and Young-Chai Ko, “K-User MIMO X Network System with Perfect Interference Alignment”, in Proc. IEEE International Conference on Communications (ICC), Kyoto, Japan, Jun. 5-9, 2011
              82. Hyun-Ho Lee and Young-Chai Ko, “Symbol-Wise Beamforming with Limited Feedback for MIMO-OFDM Systems”, in Proc. IEEE Vehicular Technology Conference (VTC 2011-Spring), Budapest, Hungary, May. 15-18, 2011
              83. Kyung-Tae Jo, Young-Chai Ko, and Hong-Chuan Yang, “RF Beamforming Considering RF Characteristics in MIMO system”, in Proc. International Conference on ICT Convergence 2010 (ICTC), Jeju Island, Korea, Nov. 17-19, 2010
              84. Jinhee Lee, Hong-Chuan Yang, and Young-Chai Ko, “Adaptive Multiuser MIMO Transmission in Wireless Systems with Cooperating Cells”, in Proc. IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), Niagara Falls, Canada, Oct. 11-13, 2010
              85. Hyun-Ho Lee and Young-Chai Ko, “Efficient Codebook-Based Symbol-Wise Beamforming for Millimeter-Wave WPAN System”, in Proc. ACM international workshop on mmWave communications: from circuits to networks (mmCom), Chicago, IL, USA, Sep. 20-24, 2010
              86. Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, “On the Diversity Enhancement and Power Balancing of Per-Subcarrier Antenna Selection in OFDM Systems”, in Proc. IEEE Vehicular Technology Conference (VTC 2010-Fall), Ottawa, Canada, Sep. 6-9, 2010
              87. Jae-Woo Kwon, Kyu-Sung Hwang, Young-Chai Ko, and Hong-Chuan Yang, "Maximizing the Spectral Efficiency of Amplify-and-Forward Relaying Systems over Nakagami-m Fading" in Proc. IEEE Vehicular Technology Conference (VTC 2010-Fall), Ottawa, Canada, Sep. 6-9, 2010
              88. Jae-Woo Kwon, Young-Chai Ko, and Hong-Chuan Yang, ”On the Spectral Efficiency of Amplify-and-Forward Relay Systems with Adaptive M-QAM”, in Proc. IEEE International Conference on Wireless Information Technology and Systems (ICWITS), Honolulu, HI, USA, Aug. 28-Sep. 3, 2010.
              89. Hyun-Ho Lee, Taehyun Jeon, and Young-Chai Ko, “Low Complexity MIMO Beamforming Scheme for Millimeter-Wave Wireless Personal Area Network”, in Proc. the 4th European Conference on Antennas and Propagation (EuCAP), Barcelona, Spain, Apr. 12-16, 2010 
              90. Sang-Do Lee, Jeong-Jae Won, Ki-Hong Park, and Young-Chai Ko, “Discrete-Rate Adaptation Schemes in Multi-channel Systems with Finite-Length Buffer”, in Proc. the 17th international conference on telecommunications, Doha, Qatar, Apr. 4-7, 2010
              91. Kyung-Tae Jo, Young-Chai Ko, Chul-gyun Park, and Joun-Sup Park, “Multiple-Antenna Post Low Noise Amplifier RF Combining”, in Proc. IEEE GLOBECOM Workshops, Honolulu, HI, USA, Nov. 30-Dec. 4, 2009
              92. Sang-Do Lee and Young-Chai Ko, “Variable threshold M-QAM with feedback delay over Nakagami-m fading channels”, in Proc. IEEE Vehicular Technology Conference (VTC 2009-Fall), Anchorage, AK, USA, Sep. 20-23, 2009
              93. Kyu-Sung Hwang, Young-Chai Ko, and Mohamed-Slim Alouini, “Performance Analysis of Two-Way Amplify and Forward Relaying with Adaptive Modulation”, in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Tokyo, Japan, Sep. 13-16, 2009
              94. Kyu-Sung Hwang, Md. Jahangir Hossain, Young-Chai Ko, and Mohamed-Slim Alouini, “Channel Allocation and Rate Adaptation for Relayed Transmission over Correlated Fading Channels”, in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Tokyo, Japan, Sep. 13-16, 2009
              95. Do-Hoon Kim, Jin-Hee Lee, and Young-Chai Ko, “Two-hop MIMO relaying systems using random unitary beamforming in Gaussian broadcast channels”, in Proc. International Conference on Advances in Satellite and Space Communications, Colmar, France, Jul. 20-25, 2009
              96. Kyu-Sung Hwang, Young-Chai Ko, and Mohamed-Slim Alouini, “Two-way amplify and forward relaying with adaptive modulation”, in Proc. ACM International Wireless Communications and Mobile Computing Conference, Leipzig, Germany, Jun. 21-24, 2009
              97. Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, “Low complexity transmit antenna selection with power balancing in OFDM systems”, in Proc. IEEE 10th Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Perugia, Italy, Jun. 21-24, 2009
              98. Ki-Hong Park, Young-Chai Ko, Mohamed-Slim Alouini, and James S. Kim, “Low complexity coordinated beamforming in 2-user MIMO systems”, in Proc. IEEE International Conference on Communications (ICC), Dresden, Germany, Jun. 14-18, 2009
              99. Kyu-Sung Hwang, Young-Chai Ko, and Mohamed-Slim Alouini, “Performance bounds for two-way amplify-and-forward relaying based on relay path selection”, in Proc. IEEE Vehicular Technology Conference (VTC 2009-Spring), Barcelona, Spain, Apr. 26-29, 2009
              100. Kyu-Sung Hwang, Young-Chai Ko, and Mohamed-Slim Alouini., “Low complexity cooperative communication with switched relay selection and adaptive modulation”, in Proc. IEEE Vehicular Technology Conference (VTC 2009-Spring), Barcelona, Spain, Apr. 26-29, 2009
              101. Ki-Hong Park and Young-Chai Ko, “Accurate approximations and asymptotic results for the sum-rate of random beamforming for multi-antenna gaussian broadcast channels”, in Proc. IEEE Vehicular Technology Conference (VTC 2009-Spring), Barcelona, Spain, Apr. 26-29, 2009
              102. SeungSik Eom, Hui-Myoung Oh, Taehyun Jeon, Younggyun Kim, Jae-Jo Lee, Sungsoo Choi, and Young-Chai Ko, “Physical layer certification system of power line communication Korea standard”, in Proc. IEEE International Symposium on Power Line Communications and its Applications (ISPLC), Dresden, Germany, Mar. 29-Apr. 1, 2009
              103. Do-Hoon Kim, Young-Chai Ko, and SeungKeun Park, “Three-hop MIMO relaying systems in Gaussian broadcast channels”, in Proc. International Conference on Signal Processing and Communication Systems (ICSPCS), Gold Coast, Australia, Dec. 15-17, 2008
              104. Sang-Do Lee and Young-Chai Ko, “Joint selection combining and power loading transmission with adaptive M-QAM in multi-channel system”, in Proc. International Conference on Signal Processing and Communication Systems (ICSPCS), Gold Coast, Australia, Dec. 15-17, 2008
              105. Peng Lu, Hong-Chuan Yang, and Young-Chai Ko, “Performance enhancement of random unitary beamforming based multiuser MIMO systems with optimum combining”, in Proc. IEEE Global Telecommunications Conference (GLOBECOM), New Orleans, LO, USA, Nov. 30-Dec. 4, 2008
              106. Kyu-Sung Hwang, Young-Chai Ko, and Mohamed-Slim Alouini, “Performance analysis of incremental relaying transmission with adaptive QAM over Nakagami-m fading channels”, in Proc. International Wireless Communications and Mobile Computing Conference, Crete Island, Greece, Aug. 6-8, 2008
              107. Jinhee Lee and Young-Chai Ko, “Performance improvement of transmit beamforming MISO system using optimum codebook indexing over feedback error channel”, in Proc. IEEE International Symposium on Information Theory (ISIT), Toronto, Canada, Jul. 6-11, 2008
              108. Kyu-Sung Hwang, Young-Chai Ko, and Mohamed-Slim Alouini, “Performance analysis of incremental relaying with relay selection and adaptive modulation over non-identically distributed cooperative paths”, in Proc. IEEE International Symposium on Information Theory (ISIT), Toronto, Canada, Jul. 6-11, 2008
              109. Hong-Chuan Yang, Peng Lu, Hyung-Ki Sung, and Young-Chai Ko, “Exact sum-rate analysis of MIMO broadcast channels with random unitary beamforming based on quantized sinr feedback”, in Proc. IEEE International Conference on Communications (ICC), Beijing, China, May 19-23, 2008
              110. Kyu-Sung Hwang, Young-Chai Ko, and Mohamed-Slim Alouini, “Outage probability of cooperative diversity systems with opportunistic relaying based on decode-and-forward transmission”, in Proc. IEEE Vehicular Technology Conference (VTC-Spring), Marina Bay, Singapore, May 11-14, 2008
              111. Kyu-Sung Hwang, Young-Chai Ko, and Mohamed-Slim Alouini, “Performance analysis of opportunistic incremental relaying with adaptive modulation over cooperative networks”, in Proc. 3rd International symposium on Wireless Pervasive Computing, Santorini, Greece, May 7-9, 2008
              112. Kyu-Sung Hwang, Young-Chai Ko, Mohamed-Slim Alouini, and Wooyong Lee, “Slow antenna selection and fast link adaptation MIMO systems”, in Proc. IEEE/ACS International Conference on Computer Systems and Applications (AICCSA08), Doha, Qatar, Mar. 31-Apr. 4, 2008
              113. Peng Lu, Hong-Chuan Yang, and Young-Chai Ko, “Sum-rate analysis of MIMO broadcast channel with random unitary Beamforming”, in Proc. IEEE Wireless Communications Networking Conference (WCNC), Las Vegas, NV, USA, Mar. 31-Apr. 3, 2008
              114. Sang-Do Lee and Young-Chai Ko, “Exact Performance Analysis of joint Adaptive Modulation and Power Loading Transmission In Multi-Channel System”, in Proc. IEEE Wireless Communications Networking Conference (WCNC), Las Vegas, NV, USA, Mar. 31-Apr. 3, 2008
              115. Ki-Hong Park, Young-Chai Ko, Hong-Chuan Yang, and James S. Kim, “adaptive antenna scaling for multi-user MIMO downlink zero-forcing transmissions with finite rate feedback”, in Proc. IEEE wireless communications and networking conference (WCNC), Las Vegas, NV, USA, Mar. 31-Apr. 3, 2008
              116. Hyung-Ki Sung, Jinhee Lee, and Young-Chai Ko, “Asymptotically optimal sum-rate of random unitary beamforming with double thresholds”, in Proc. IEEE International Symposium on Wireless Communication Systems, Trondheim, Norway, Oct. 17-19, 2007
              117. Ki-Hong Park, Young-Chai Ko, and Hong-Chuan Yang, “Performance analysis of transmit diversity systems with multiple antenna replacement”, in Proc. IEEE International Symposium on Wireless Communication Systems, Trondheim, Norway, Oct. 17-19, 2007
              118. Kyu-Sung Hwang and Young-Chai Ko, “An efficient relay selection algorithm for cooperative networks”, in Proc. IEEE Vehicular Technology Conference (VTC 2007-Fall), Baltimore, MA, Sep. 30-Oct. 3, 2007 
              119. Sang-Ho Choi and Young-Chai Ko, “Implementation-friendly QRM-MLD using trellis-structure based on viterbi algorithm”, in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Athens, Greece, Sep. 3-7, 2007
              120. Kyu-Sung Hwang and Young-Chai Ko, “Switch-and-examine node selection for efficient relaying systems”, in Proc. International Wireless Communications and Mobile Computing Conference, Honolulu, Hawaii, Aug. 12-16, 2007
              121. Haewoon Nam, Young-Chai Ko, and Mohamed-Slim Alouini, “Performance analysis of switch-based multiuser scheduling with adaptive modulation”, in Proc. IEEE International Symposium on Information Theory (ISIT), Nice, France, Jun. 24-29, 2007
              122. Ki-Hong Park, Young-Chai Ko, and Mohamed-Slim Alouini, “Joint adaptive combining and multiuser down-link scheduling”, in Proc. IEEE Vehicular Technology Conference (VTC 2007-Spring), Dublin, Ireland, Apr. 22-25, 2007
              123. Haewoon Nam, Young-Chai Ko, and Mohamed-Slim Alouini, “On the rate versus diversity trade-off in multi-channel wireless transmission systems”, in Proc. IEEE Wireless Communications and Networking Conference (WCNC), Hong Kong, China, Mar. 11-15, 2007
              124. Mohamed-Slim Alouini, Young-Chai Ko, and Hong-Chuan Yang, “Joint Diversity Combining and Link Adaptation”, in Proc. International Conference on Modeling Simulation and Applied Optimization (ICMSAO '07), Abu Dhabi, UAE, Mar. 2007
              125. Seyeong Choi, Mohamed-Slim Alouini, K. A. Qaraqe, Hong-Chuan Yang, and Young-Chai Ko, “A practical study of adaptive finger reassignment and replacement in the soft handover region”, in Proc. International Symposium on Signal Processing and its Application, Sharjah, U.A.E., Feb. 12-15, 2007
              126. Ki-Hong Park, Hyung-Ki Sung, and Young-Chai Ko, “BER analysis of dual carrier modulation based on ML decoding”, in Proc. Asia-Pacific Conference on Communications (APCC), Busan, Korea, Aug. 31-Sep. 1, 2006
              127. Kyu-Sung Hwang, Young-Chai Ko, Mohamed-Slim Alouini, and Hong-Chuan Yang, “Average performance of minimum estimation and combining generalized selection combining in cellular systems”, in Proc. Asia-Pacific Conference on Communications (APCC), Busan, Korea, Aug. 31-Sep. 1, 2006 
              128. Kyu-Sung Hwang, Young-Chai Ko, and Mohamed-Slim Alouini, “A study of multi-hop cooperative diversity system”, in Proc. Asia-Pacific Conference on Communications (APCC), Busan, Korea, Aug. 31-Sep. 1, 2006
              129. Young-Chai Ko, Hong-Chuan Yang, and Mohamed-Slim Alouini, “Adaptive modulation and diversity combining based on output-threshold MRC”, in Proc. IEEE Vehicular Technology Conference (VTC 2006-Spring), May 7-10, 2006
              130. Seyeong Choi, Hong-Chuan Yang, and Young-Chai Ko, “Transmit diversity systems with antenna replacement and its application to space time block coding transmission”, in Proc. International Symposium on Wireless Pervasive Computing, Phuket, Thailand, Jan. 16-18, 2006
              131. Seyeong Choi, Young-Chai Ko, and Edward J. Powers, “Performance analysis of maximal-ratio combining with transmit antenna selection for generalized selection criterion”, in Proc. IEEE Vehicular Technology Conference (VTC 2005-Fall), Sep. 25-28, 2005
              132. Haewoon Nam, Young-Chai Ko, and Baxter F. Womack, “Output threshold-MRC over I.I.D. Nakagami and non-I.I.D. Rayleigh fading channels”, in Proc. IEEE Vehicular Technology Conference (VTC 2005-Fall), Sep. 25-28, 2005
              133. Mohamed-Slim Alouini, Kyu-Sung Hwang, Hong-Chuan Yang, and Young-Chai Ko, “Adaptive combining for diversity rich environments”, in Proc. 8th International Symposium on Signal Processing and its Applications, Sydney, Australia, Aug. 28-31, 2005
              134. Jinhee Lee and Young-Chai Ko, “Group decision rule for code tracking using a delay lock loop in CDMA systems”, in Proc. The 20th International Technical Conference on Circuits/Systems, Computers and Communication (ITC-CSCC2005), Jul. 4-7,2005
              135. Tao Luo and Young-Chai Ko, “On the statistics of the residual frequency error for frequency estimators”, in Proc. IEEE Wireless Communications and Networking Conference (WCNC), Atlanta, GA, Mar. 13-17, 2005
              136. Seyeong Choi, Young-Chai Ko, and Edward J. Powers, “Performance analysis and optimization of switched transmit diversity systems in MIMO systems”, in Proc. IEEE Global Telecommunications Conference (GLOBECOM), Dallas, TX, Nov. 29-Dec. 3, 2004
              137. Tao Luo and Young-Chai Ko, “Optimization of SNR estimation in decibel domain over communication channels”, in Proc. International Symposium on Intelligent Signal Processing and Communication Systems, Seoul, Korea, pp. 822-827, Nov. 18-19, 2004
              138. Young-Chai Ko, Tao Luo, and Gibong Jeong, “Effect of noise variance in the channel estimation on dual-MRC over Rayleigh fading channels”, in Proc. IEEE Vehicular Technology Conference (VTC 2003-Spring), Jeju, Korea, Apr. 22-25, 2003
              139. Young-Chai Ko and Gibong Jeong, “Doppler spread estimation in mobile communication systems”, in Proc. IEEE Vehicular Technology Conference (VTC 2002-Spring), Birmingham, AL, May 6-9, 2002
              140. Xiaoyuan Qi, Mohamed-Slim Alouini, and Young-Chai Ko, “Closed-form analysis of dual-diversity equal-gain combiners over Rayleigh fading channels”, in Proc. IEEE Vehicular Technology Conference (VTC 2002-Spring), Birmingham, AL, May 6-9, 2002 
              141. Young-Chai Ko, Michael R. Burr, and Mohamed-Slim Alouini, Ali Abdi, “Average outage duration of interference-limited wireless communication systems”, in Proc. IEEE Vehicular Technology Conference (VTC 2002-Spring), Birmingham, AL, May 6-9, 2002
              142. Young-Chai Ko and Mohamed-Slim Alouini, “Estimation of the local mean power over generalized fading channels”, in Proc. IEEE Personal Indoor and Mobile Radio Communication (PIMRC), SanDiego, CA, Sep. 30-Oct. 3, 2001
              143. Young-Chai Ko and Mohamed-Slim Alouini, “Estimation of Nakagami-m fading channel parameters with application to optimized transmitter diversity systems”, in Proc. IEEE International Conference on Communications (ICC), Helsinki, Finland, Jun. 11-14, 2001
              144. Young-Chai Ko, A. Abdi, Mohamed-Slim Alouini, and Mostafa Kaveh, “Average outage duration of diversity systems over generalized fading channels”, in Proc. IEEE Wireless Communication Networks Conference (WCNC), Chicago, IL, Sep. 23-28, 2000
              145. Young-Chai Ko, Mohamed-Slim Alouini, and Marvin K. Simon, “An MGF-based numerical technique for the outage probability evaluation of diversity systems”, in Proc. IEEE International Symposium on Information Theory (ISIT), Sorrento, Italy, Jun. 25-30, 2000
              146. Young-Chai Ko, Mohamed-Slim Alouini, and Marvin K. Simon, “Performance Analysis and Optimization of Switched Diversity Systems”, in Proc. IEEE Vehicular Technology Conference (VTC 1999-Fall), Amsterdam, Netherlands, Sep. 19-22, 1999