top of page
Journal Articles
Journal Articles
Conference Articles

- Claude Bernard -

“The joy of discovery is certainly the liveliest that the mind of man can ever feel”

PUBLICATIONS

  1. H. Cho, B. Ko, B. Clerckx, and J. Choi, "Cooperative Rate-Splitting for Enhanced THz Frequency Coverage," in Proc. of IEEE International Symposium of Personal, Indoor and Mobile Radio Communications, Sep. 2023.

  2. H. Ryu and J. Choi, "EMC2-Net: Joint Equalization and Modulation Classification Based on Constellation Network," in Proc. of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Jun. 2023.

  3. S. Kim, H.Lee, J. Cha, and J. Choi, "Channel Estimation for Intelligent Reflecting Surface Assisted MmWave Systems Using Analog Feedback," in Proc. of IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), Jun. 2022. 

  4. S. Kim, H.Lee, J. Cha, and J. Choi, "Parameter-Based Channel Estimation for Intelligent Reflecting Surface Aided MIMO Systems," in Proc. of IEEE Wireless Communications and Networking Conference (WCNC), Apr. 2022. 

  5. H. Cho, and J. Choi, "Energy Efficient UAV Communication via Multiple Intelligent Reflecting Surfaces," in Proc. of IEEE Wireless Communications and Networking Conference Workshop (WCNC), Apr. 2022.

  6. S. Hong and J. Choi, “Phase Shift Design for Intelligent Reflecting Surface Aided mmWave MIMO Systems,” in Proc. of IEEE Global Communications Conference Workshop, Dec. 2021.

  7. B. Ko, H. Kim, and J. Choi, “Machine Learning-Based Channel Prediction Exploiting Frequency Correlation in Massive MIMO Wideband Systems" in Proc. of  International Conference on Information and Communication Technology Convergence, Oct. 2021.

  8. H. Choi, and J. Choi, “WiThRay: Versatile 3D Simulator for Intelligent Reflecting Surface-aided MmWave Systems," in Proc. of  IEEE international Symposium on Antennas and Propagation, Oct. 2021.

  9. I. Kim and J. Choi, "Gridless Channel Estimation for mmWave Hybrid Massive MIMO Systems with Low-Resolution ADCs," in Proc. of IEEE Statistical Signal Processing Workshop, Jul. 2021.

  10. H. Lee, H. Choi, H. Kim, S. Kim, and J. Choi, "Downlink Channel Reconstruction for Massive MIMO Spatial Multiplexing," in Proc. of IEEE International Conference on Communications, Jun. 2021.

  11. G. Han, S. Kim, and J. Choi, "Multi-Vehicle Velocity Estimation Using IEEE 802.11 ad Waveform," in Proc. of IEEE International Conference on Acoustics, Speech and Signal Processing, Jun. 2021.

  12. I. Kim and J. Choi, "Performance of Cell-Free MmWave Massive MIMO Systems with Fronthaul Compression and DAC Quantization", in Proc. of IEEE Wireless Communications and Networking Conference Workshops, Mar. 2021.

  13. H. Kim, S. Kim, H. Lee, and J. Choi, "Massive MIMO Channel Prediction: Machine Learning Versus Kalman Filtering," in Proc. of IEEE Global Communications Conference Workshops, Dec. 2020.

  14. G. Han and J. Choi, "Radar Imaging Based on IEEE 802.11 ad Waveform," in Proc. of  IEEE Global Communications Conference, Dec. 2020. 

  15. J. Cha, J. Choi, and D. J. Love, "Noncoherent OOK Symbol Detection with Supervised-Learning Approach for BCC," in Proc. of IEEE International Symposium of Personal, Indoor and Mobile Radio Communications, Sep. 2020.

  16. S. Kim, J. Choi, and J. Song, "Beam Design for Millimeter-Wave Backhaul with Dual-Polarized Uniform Planar Arrays," in Proc. of IEEE International Conference on Communications, Jun. 2020.

  17. I. Kim and J. Choi, "Gradient Pursuit-Based Channel Estimation for MmWave Massive MIMO Systems with One-Bit ADCs," in Proc. of IEEE International Symposium of Personal, Indoor and Mobile Radio Communications, Sep. 2019.

  18. H. Lee, S. Kim, and J. Choi, "Efficient Channel AoD/AoA Estimation Using Widebeams for Millimeter Wave MIMO Systems," in Proc. of IEEE International Workshop on Signal Processing Advances in Wireless Communications, Jul. 2019.

  19. I. Kim, N. Lee, and J. Choi, "Dominant Channel Estimation via MIPS for Large-Scale Antenna Systems with One-Bit ADCs," in Proc. of IEEE Global Communications Conference, Dec. 2018.

  20. H. Kim and J. Choi, "Channel Estimation for One-Bit Massive MIMO Systems Exploiting Spatio-Temporal Correlations," in Proc. of IEEE Global Communications Conference, Dec. 2018.

  21. A. Ibrahim, J. Choi, A. C. Marcum, D. J. Love, and J. V. Krogmeier, "Performance Analysis of Multi-Way Quantized Distributed Relay Networking," in Proc. of IEEE Global Communications Conference, Dec. 2017.

  22. V. Raghavan, J. Choi, and D. J. Love, "Statistical Beamforming For The Large Antenna Broadcast Channel," in Proc. of IEEE International Symposium on Information Theory, Jun. 2017.

  23. C. Mollén, J. Choi, E. Larsson, and R. W. Heath Jr., "Achievable Uplink Rates for Massive MIMO with Coarse Quantization," in Proc. of IEEE International Conference on Acoustics, Speech and Signal Processing, Mar. 2017.

  24. D. Zhu, J. Choi, and R. W. Heath Jr., "Auxiliary Beam Pair Enabled AoD and AoA Estimation in mmWave FD-MIMO Systems," in Proc. of IEEE Global Communications Conference, Dec. 2016.

  25. J. Song, J. Choi, and D. J. Love, "Advanced Quantizer Designs for FD-MIMO Systems using Uniform Planar Arrays," in Proc. of IEEE Global Communications Conference, Dec. 2016.

  26. M. E. Eltayeb, J. Choi, T. Y. Naffouri, and R. W. Heath Jr., "On the Security of Millimeter Wave Vehicular Communication Systems using Random Antenna Subsets," in Proc. of IEEE Vehicular Technology Conference, Sep. 2016.

  27. C. Mollén, J. Choi, E. Larsson, and R. W. Heath Jr., "Performance of Linear Receivers for Wideband Massive MIMO with One-Bit ADCs," in International ITG Workshop on Smart Antennas (WSA 2016), Mar. 2016.

  28. D. Zhu, J. Choi, and R. W. Heath Jr., "Auxiliary Beam Pair Design in mmWave Cellular Systems with Hybrid Precoding and Limited Feedback," in Proc. of IEEE International Conference on Acoustics, Speech and Signal Processing, Mar. 2016.

  29. C. Mollén, J. Choi, E. Larsson, and R. W. Heath Jr., "One-Bit ADCs in Wideband Massive MIMO Systems with OFDM Transmission," in Proc. of IEEE International Conference on Acoustics, Speech and Signal Processing, Mar. 2016.

  30. J. Choi and R. W. Heath Jr., "Near Maximum-Likelihood Detector with One-Bit ADCs for Multiuser Massive MIMO Systems," in Proc. of IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, Dec. 2015.

  31. J. Choi, K. Lee, D. J. Love, T. Kim, and R. W. Heath Jr., "Advanced Limited Feedback Designs for FD-MIMO Using Uniform Planar Arrays," in Proc. of IEEE Global Communications Conference, Dec. 2015.

  32. J. Song, J. Choi, and D. J. Love, "Codebook Design for Hybrid Beamforming in Millimeter Wave Systems," in Proc. of IEEE International Conference on Communications, Jul. 2015.

  33. J. Choi, T. Kim, D. J. Love, and J. Seol, "Exploiting the Preferred Domain of FDD Massive MIMO Systems with Uniform Planar Arrays," in Proc. of IEEE International Conference on Communications, Jul. 2015.

  34. J. Choi, D. J. Love, and D. R. Brown III, "Channel Estimation Techniques for Quantized Distributed Reception in MIMO Systems," in Proc. of IEEE Asilomar Conference on Signals, Systems, and Computers, Nov. 2014.

  35. B. Lee, J. Choi, J. Seol, D. J. Love, and B. Shim, "Antenna Grouping based Feedback Reduction for FDD-based Massive MIMO Systems," in Proc. of IEEE International Conference on Communications, Jul. 2014.

  36. J. Choi, V. Raghavan, and D. J. Love, "Limited Feedback Design for the Spatially Correlated Multi-Antenna Broadcast Channel," in Proc. of IEEE Global Communications Conference, Dec. 2013 (Best Paper Award).

  37. D. J. Love, J. Choi, and P. Bidigare, "Receive Spatial Coding for Distributed Diversity," in Proc. of IEEE Asilomar Conference on Signals, Systems, and Computers, Nov. 2013.

  38. J. Choi, D. J. Love, and U. Madhow, "Limited Feedback in Massive MIMO Systems: Exploiting Channel Correlations via Noncoherent Trellis-Coded Quantization," in Proc. of Conference on Information Sciences and Systems, Mar. 2013.

  39. D. J. Love, J. Choi, and P. Bidigare, "A Closed-Loop Training Approach for Massive MIMO Beamforming Systems," in Proc. of Conference on Information Sciences and Systems, Mar. 2013.

  40. J. Choi, Z. Chance, D. J. Love, and U. Madhow, "Noncoherent Trellis Coded Quantization for Massive MIMO Limited Feedback Beamforming," in UCSD Information Theory and Applications Workshop, Feb. 2013

  41. J. Choi, B. Clerckx, and D. J. Love, "Differential Codebook for General Rotated Dual-Polarized MISO Channels," in Proc. of IEEE Global Communications Conference, Dec. 2012.

  42. B. Clerckx, G. Kim, and J. Choi, "Explicit vs. Implicit Feedback for SU and MU-MIMO," in Proc. of IEEE Global Communications  Conference, Dec. 2010.

  43. B. Clerckx, G. Kim, J. Choi, and S. Kim, "Allocation of Feedback Bits Among Users in Broadcast MIMO Channels," in Proc. of IEEE Global Communications Conference, Dec. 2008.

  44. B. Clerckx, D. Hwang, G. Kim, J. Choi, and S. Kim, "Multi-User MIMO with Limited Feedback Made Practical," in Global Samsung Tech. Conference 2008, Nov. 2008 (Best Paper Award).

  45. P. H. Kuo, J. Choi, J. Suh, and S. Kim, "A Feedback Scheme for ZFBF-Based MIMO Broadcast Systems with Infrastructure Relay Stations," in Proc. of IEEE Wireless Communications and Networking Conference, Apr. 2008.

  46. J. Choi, I. S. Sohn, S. J. Kim, and K. B Lee, "Efficient Uplink User Selection Algorithm in Distributed Antenna Systems,"in Proc. IEEE International Symposium of Personal, Indoor and Mobile Radio Communications, Sep. 2007.

Conference Articles

  1. D. Jung, J. Ryu, and J. Choi*, "Satellite Clustering for Non-Terrestrial Networks: Orbital Configuration-Dependent Outage Analysis," accepted to IEEE Wireless Communications Letters, Nov. 2023.

  2. J. Park, B. Lee, J. Choi, H. Lee, N. Lee, S. Park, K. Lee, J. Choi, S. H. Chae, S. Jeon, K. S. Kwak, B. Clerckx, and W. Shin, "Rate-Splitting Multiple Access for 6G Networks: Ten Promising Scenarios and Applications," accepted to IEEE Network, Oct. 2023.

  3. H. Cho, B. Ko, B. Clerckx, and J. Choi*, "Coverage Increase at THz Frequencies: A Cooperative Rate-Splitting Approach," accepted to IEEE Transactions on Wireless Communications, May 2023.

  4. I. Kim, M. Bennis, J. Oh, J. Chung, and J. Choi*, "Bayesian Channel Estimation for Intelligent Reflecting Surface-Aided mmWave Massive MIMO Systems with Semi-Passive Elements," accepted to IEEE Transactions on Wireless Communications, Apr. 2023.

  5. H. Kim, J. Choi*, and D. J. Love, "Massive MIMO Channel Prediction Via Meta-Learning and Deep Denoising: Is a Small Dataset Enough?," accepted to IEEE Transactions on Wireless Communications, Apr. 2023.

  6. H. Choi, J. Oh, J. Chung, G. C. Alexandropoulos, and J. Choi*, "WiThRay: A Versatile Ray-Tracing Simulator for Smart Wireless Environments," IEEE Access, vol. 11, pp. 56822-56845, Jun. 2023.

  7. D. Jung, G. Im, J. Ryu, S. Park, H. Yu, and J. Choi*, "Satellite Clustering for Non-Terrestrial Networks: Concept, Architectures, and Applications," IEEE Vehicular Technology Magazine, vol. 18, no. 3, pp. 29-37, Sep. 2023.

  8. G. Lee, H. Lee, J. Oh, J. Chung, and J. Choi*, "Channel Estimation for Reconfigurable Intelligent Surface with a few Active Elements," IEEE Transactions on Vehicular Technology, vol. 72, no. 6, pp. 8170-8174, Jun. 2023.

  9. S. Kim, H. Lee, H. Kim, Y. Choi, and J. Choi*, "Complete Power Reallocation for MU-MIMO under Per-Antenna Power Constraint," IEEE Transactions on Communications, vol. 71, no. 4, pp. 2087-2103, Apr. 2023.

  10. J. Lee, J. Choi, and J. Kang, "Harmony Search-Based Optimization for Multi-RISs MU-MISO OFDMA Systems," IEEE Wireless Communications Letters, vol. 12, no. 2, pp. 257-261, Feb. 2023.  

  11. H. Cho and J. Choi*, "Energy Minimization for UAV Communication Systems Assisted with Multiple IRSs," Journal of Communications and Networks, vol. 24, no. 5, pp. 566-578, Oct. 2022. 

  12. G. Han, J. Choi*, and R. W. Heath Jr., "Radar Imaging Based on IEEE 802.11ad Waveform in V2I Communications," IEEE Transactions on Signal Processing, vol. 70, pp.  4981 - 4996, Oct. 2022.  

  13. I. Kim, M. Bennis, and J. Choi*, "Cell-Free MmWave Massive MIMO Systems with Low-Capacity Fronthaul Links and Low-Resolution ADC/DACs," IEEE Transactions on Vehicular Technology, vol. 71, no. 10, pp. 10512-10526, Oct. 2022.

  14. S. Hong, J. Park, S. Kim, and J. Choi*, "Hybrid Beamforming for Intelligent Reflecting Surface Aided Millimeter Wave MIMO Systems," IEEE Transactions on Wireless Communications, vol. 21, no. 9, pp. 7343 - 7357, Sep. 2022.

  15. S. Kim, H. Lee, J. Cha, S. Kim, J. Park, and J. Choi*, "Practical Channel Estimation and Phase Shift Design for Intelligent Reflecting Surface Empowered MIMO Systems," IEEE Transactions on Wireless Communications, vol. 21, no.8, pp. 6226 - 6241, Aug. 2022.

  16. D. Jung, J. Ryu, and J. Choi*, "When Satellites Work as Eavesdroppers," IEEE Transactions on Information Forensics and Security, vol. 17, pp. 2784-2799, Jul. 2022.  

  17. J. Cha, J. Choi*, and D. J. Love, "Practical Distributed Reception for Wireless Body Area Networks Using Supervised Learning," IEEE Transactions on Wireless Communications, vol. 21, no.7, pp. 4898-4908, Jul. 2022.

  18. S. Moon, H. Lee, J. Choi, and Y. Lee, "Low-Complexity Beamforming Optimization for IRS-Aided MU-MIMO Wireless Systems," IEEE Transactions on Vehicular Technology, vol. 71, no. 5, pp. 5587-5592, May 2022.

  19. D. Jung, J. Ryu, W. Byun, and J. Choi*, "Performance Analysis of Satellite Communication System Under the Shadowed-Rician Fading: A Stochastic Geometry Approach," IEEE Transactions on Communications, vol. 70, no. 4, pp. 2707-2721, Apr. 2022. 

  20. T. Noh and J. Choi*, "Cell-Free MIMO Systems Powered by Intelligent Reflecting Surfaces," IEEE Communications Letters, vol. 26, no. 5, pp. 1076 - 1080,  Feb. 2022.

  21. J. Park, K. Kang, and J. Choi*, "Low-Complexity Algorithm for Outage Optimal Resource Allocation in Energy Harvesting-Based UAV Identification Networks," IEEE Communications Letters,  vol. 25,  no. 11, pp. 3639-3643,  Nov. 2021.

  22. H. Lee, H. Choi, H. Kim, S. Kim, C. Jang, Y. Choi, and J. Choi*, "Downlink Channel Reconstruction for Spatial Multiplexing in Massive MIMO Systems," IEEE Transactions on Wireless Communications, vol. 20, no. 9, pp. 6154-6166,  Sep. 2021.

  23. J. Kang, J. Choi, and W. Choi, "Multi-user Energy Beamforming for Different Energy Requests," IEEE Wireless Communications Letters, vol. 10, no. 8, Aug. 2021.

  24. I. Kim and J. Choi*, “Spatial Wideband Channel Estimation for MmWave Massive MIMO Systems with Hybrid Architectures and Low-Resolution ADCs,” IEEE Transactions on Wireless Communications, vol. 20, no. 6, pp. 4016-4029, Jun. 2021.

  25. H. Cho and J. Choi*, "Alternating Beamforming with Intelligent Reflecting Surface Element Allocation," IEEE Wireless Communications Letters, vol. 10, no. 6, pp. 1232-1236, Jun. 2021.

  26. H. Cho and J. Choi*, "Sum Rate Maximization through Intelligent Reflecting Surface Element Allocation," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 4,  pp. 750-756, Apr. 2021.

  27. S. Hong, S. Kim, J. Choi*, and W. Choi, "Polar-Cap Codebook Design for MISO Rician Fading Channels with Limited Feedback," IEEE Wireless Communications Letters, vol. 10, no. 4, pp. 730-734, Apr. 2021.

  28. H. Kim, S. Kim, H. Lee, C. Jang, Y. Choi, and J. Choi*, "Massive MIMO Channel Prediction: Kalman Filtering Vs. Machine Learning," IEEE Transactions on Communications, vol. 69, no. 1, pp. 518-528, Jan. 2021.

  29. S. Kim, J. Choi*, and J. Song, “Beam Designs for Millimeter-Wave Backhaul with Dual-Polarized Uniform Planar Arrays,” IEEE Transactions on Communications, vol. 68, no. 7, pp. 4202-4217, Jul. 2020.

  30. H. Choi and J. Choi*, "Downlink Extrapolation for FDD Multiple Antenna Systems Through Neural Network Using Extracted Uplink Path Gains," IEEE Access, vol. 8, pp. 67100-67111, 2020.

  31. I. Kim and J. Choi*, "Channel Estimation via Gradient Pursuit for MmWave Massive MIMO Systems with One-Bit ADCs," EURASIP Journal on Wireless Communications and Networking, vol. 2019, no. 1, pp. 289, Dec. 2019.

  32. H. Kim and J. Choi*, "Channel Estimation for Spatially/Temporally Correlated Massive MIMO Systems with One-Bit ADCs," EURASIP Journal on Wireless Communications and Networking, vol. 2019, no. 1, pp. 267, Dec. 2019.

  33. I. Kim and J. Choi*, "FCFGS-CV-Based Channel Estimation for Wideband MmWave Massive MIMO Systems with Low-Resolution ADCs," IEEE Wireless Communications Letters, vol. 8, no. 6, pp. 1648-1652, Dec. 2019.

  34. S. Moon, I. Kim, D. Jee, J. Choi, and Y. Lee, "Massive MIMO Systems with Low-Resolution ADCs: Baseband Energy Consumption vs. Symbol Detection Performance," IEEE Access, vol. 7, pp. 6650-6660, 2019.

  35. D. Zhu, J. Choi, and R. W. Heath Jr., "High-Resolution Angle Tracking for Mobile Wideband Millimeter-Wave Systems with Antenna Array Calibration," IEEE Transactions on Wireless Communications, vol. 17, no. 11, pp. 7173-7189, Nov. 2018.

  36. V. Va, J. Choi, T. Shimizu, G. Bansal, and R. W. Heath Jr., "Impact of Measurement Noise on Millimeter Wave Beam Alignment Using Beam Subsets," IEEE Wireless Communications Letters, vol. 7, no. 5, pp. 784-787, Oct. 2018.

  37. H. Kim and J. Choi*, "Channel AoA Estimation for Massive MIMO Systems Using One-Bit ADCs," Journal of Communications and Networks, vol. 20, no. 4, pp. 374-382, Aug. 2018.

  38. A. Mayouche, A. Metref, and J. Choi*, "Downlink Training Overhead Reduction Technique for FDD Massive MIMO Systems," IEEE Signal Processing Letters, vol. 25, no. 8, pp. 1201-1205, Jun. 2018.

  39. J. Song, J. Choi*, T. Kim, and D. J. Love, "Advanced Quantizer Designs for FDD-based FD-MIMO Systems Using Uniform Planar Arrays," IEEE Transactions on Signal Processing, vol. 66, no. 14, pp. 3891-3905, May 2018.

  40. V. Va, J. Choi, T. Shimizu, G. Bansal, and R. W. Heath Jr., "Inverse Multipath Fingerprinting for Millimeter Wave V2I Beam Alignment," IEEE Transactions on Vehicular Technology, vol. 67, no. 5, pp. 4042-4058, May 2018.

  41. P. Kumari, J. Choi, N. G. Prelcic, and R. W. Heath Jr., "IEEE 802.11ad-based Radar: An Approach to Joint Vehicular Communication-Radar System," IEEE Transactions on Vehicular Technology, vol 67, no. 4, pp. 3012-3027, Apr. 2018.

  42. D. Zhu, J. Choi, and R. W. Heath Jr., "Two-Dimensional AoD and AoA Acquisition for Wideband mmWave Systems with Cross-Polarized MIMO," IEEE Transactions on Wireless Communications, vol. 16, no. 12, pp. 7890-7905, Dec. 2017.

  43. A. Ibrahim, A. C. Marcum, J. Choi*, D. J. Love, and J. V. Krogmeier, "Multi-Way Distributed Wireless Relay Network with Projected Binary Quantization," IEEE Transactions on Signal Processing, vol. 65, no. 24, pp. 6462-6477, Dec. 2017.

  44. M. E. Eltayeb, J. Choi, T. Y. Al-Naffouri, and R. W. Heath Jr., "Enhancing Secrecy with Multi-Antenna Transmission in Millimeter Wave Vehicular Communication Systems," IEEE Transactions on Vehicular Technology, vol. 66, no. 9, pp. 8189-8151, Sep. 2017.

  45. D. Zhu, J. Choi*, and R. W. Heath Jr., "Auxiliary Beam Pair Enabled AoD and AoA Estimation in Closed-Loop Large-Scale mmWave MIMO System," IEEE Transactions on Wireless Communications, vol. 16, no. 7, pp. 4770-4785, Jul. 2017.

  46. V. Va, J. Choi, and R. W. Heath Jr., "The Impact of Beamwidth on Temporal Channel Variation in Vehicular Channels and its Implications," IEEE Transactions on Vehicular Technology, vol. 66, no. 6, pp. 5014-5029, Jun. 2017.

  47.  E. Yeh, J. Choi, N. G. Prelcic, C. R. Bhat, and R. W. Heath Jr., "Security in Automotive Radar and Vehicular Networks," Microwave Journal, vol. 60, no. 5, pp. 148-165, May 2017.

  48. J. Song, J. Choi*, and D. J. Love, "Common Codebook Millimeter Wave Beam Design: Designing Beams for Both Sounding and Communication with Uniform Planar Arrays," IEEE Transactions on Communications, vol. 65, no. 4, pp. 1859-1872, Apr. 2017.

  49. C. Mollén, J. Choi*, E. Larsson, and R. W. Heath Jr., "Uplink Performance of Wideband Massive MIMO With One-Bit ADCs,"  IEEE Transactions on Wireless Communications, vol. 16, no. 1, pp. 87-100, Jan. 2017.

  50. J. Choi*, V. Va, N. Gonzáalez-Prelcic, R. Daniels, C. R. Bhat, and R. W. Heath Jr., “Millimeter Wave Vehicular Communication to Support Massive Automotive Sensing,” IEEE Communications Magazine, vol. 54, no. 12, pp. 160-167, Dec. 2016.

  51. M. Motro, A. Chu, J. Choi, P. S. Lavieri, A. R. Pinjari, C. R. Bhat, J. Ghosh, and R. W. Heath Jr., "Vehicular Ad-Hoc Network Simulations of Overtaking Maneuvers on Two-Lane Rural Highways," Transportation Research Part C: Emerging Technologies, vol. 72, pp. 60-76, Nov. 2016.

  52. J. Choi*, J. Mo, and R. W. Heath Jr., "Near Maximum-Likelihood Detector and Channel Estimator for Uplink Multiuser Massive MIMO Systems with One-Bit ADCs," IEEE Transactions on Communications, vol. 64, no. 5, pp. 2005-2018, May 2016 (2019 IEEE Communications Society Stephen O. Rice Prize).

  53. Z. Pi, J. Choi, and R. W. Heath Jr., "Millimeter-wave Gbps Broadband Evolution towards 5G: Fixed Access and Backhaul," IEEE Communications Magazine, vol. 54, no. 4, pp. 138-144, Apr. 2016.

  54. J. Song, J. Choi, S. G. Larew, D. J. Love, T. A. Thomas, and A. Ghosh, "Adaptive Millimeter Wave Beam Alignment for Dual-Polarized MIMO Systems," IEEE Transactions on Wireless Communications, vol. 14, no. 11, pp. 6283-6296, Nov. 2015.

  55. B. Lee, J. Choi, J. Seol, D. J. Love, and B. Shim, "Antenna Grouping based Feedback Compression for FDD-based Massive MIMO Systems," IEEE Transactions on Communications, vol. 63, no. 9, pp. 3261-3274, Sep. 2015.

  56. V. Raghavan, J. Choi, and D. J. Love, "Design Guidelines for Limited Feedback in the Spatially Correlated Broadcast Channel," IEEE Transactions on Communications, vol. 63, no. 7, pp. 2524-2540, Jul. 2015.

  57. J. Choi*, D. J. Love, D. R. Brown III, and M. Boutin, "Quantized Distributed Reception for MIMO Wireless Systems Using Spatial Multiplexing," IEEE Transactions on Signal Processing, vol. 63, no. 13, pp. 3537-3548, Jul. 2015.

  58. J. Choi*, D. J. Love, and T. Kim, "Trellis-Extended Codebooks and Successive Phase Adjustment: A Path from LTE-Advanced to FDD Massive MIMO Systems," IEEE Transactions on Wireless Communications, vol. 14, no. 4, pp. 2007-2016, Apr. 2015.

  59. J. Choi*, D. J. Love, and P. Bidigare, "Coded Distributed Diversity: A Novel Distributed Reception Technique for Wireless Communication Systems," IEEE Transactions on Signal Processing, vol. 63, no. 5, pp. 1310-1321, Mar. 2015.

  60. J. Choi*, D. J. Love, and P. Bidigare, "Downlink Training Techniques for FDD Massive MIMO Systems: Open-Loop and Closed-Loop Training with Memory," IEEE Journal of Selected Topics in Signal Processing, vol. 8, no. 5, pp. 802-814, Oct. 2014 (2015 IEEE Signal Processing Society Best Paper Award).

  61. J. Choi* and D. J. Love, "Bounds on Eigenvalues of a Spatial Correlation Matrix," IEEE Communications Letters, vol. 18, no. 8, pp. 1391-1394, Aug. 2014.

  62. S. Y. Park, J. Choi, and D. J. Love, "Multicell Cooperative Scheduling for Two-Tier Cellular Networks," IEEE Transactions on Communications, vol. 62, no. 2, pp. 536-551, Feb. 2014.

  63. J. Choi*, Z. Chance, D. J. Love, and U. Madhow, "Noncoherent Trellis-Coded Quantization: A Practical Limited Feedback Technique for Massive MIMO Systems," IEEE Transactions on Communications, vol. 61, no. 12, pp. 5016-5029, Dec. 2013.

  64. J. Choi*, B. Clerckx, N. Lee, and G. Kim, "A New Design of Polar-Cap Differential Codebook for Temporally/Spatially Correlated MISO Channels," IEEE Transactions on Wireless Communications, vol. 11, no. 2, pp. 703-711, Feb. 2012.

  65. D. Hwang, J. Choi, B. Clerckx, and G. Kim, "MIMO Precoder Selections in Decode-Forward Relay Networks with Finite Feedback," IEEE Transactions on Communications, vol. 59, no. 7, pp. 1785-1790, Jul. 2012.

  66. I. Sohn, J. Choi, B. O. Lee, and K. B. Lee, "Unitary Beamforming Multi-user MIMO System with Efficient User Scheduling Algorithm," IEICE Transactions on Communications, vol. E93-B, no. 7, Jul. 2010.

Patents

  1. J. Choi and H. Cho, “Integrated Beamforming Method with Intelligent Reflecting Surface Element Allocation and System Therefore.” US Patent, 11,515,918 B2. Filing Date: Feb. 18, 2021

  2. J. Lim, H. Lee, J. Choi, S. Kim, and M. Byun, “Apparatus and Method for Estimating Direction in Wireless Communication System.” US Patent, 10,958,330 B2. Filing Date: Dec. 26, 2019.

  3. J. Choi and H. Kim, “Method and Apparatus for Estimating Channel in Multiple-Input Multiple-Output Communication Systems Exploiting Temporal Correlations.” US Patent, 10,530,610 B2. Filing Date: Jan. 3, 2018.

  4. J. Choi, D. J. Love, T. Kim, and J. Seol, “Codebook for Multiple-Input Multiple-Output System and Communication Method and Apparatus Using Same.” US Patent, 10,305,557 B2. Filing Date: Dec. 22, 2014.

  5. J. Choi, D. J. Love, T. Kim, and K. Lee, “Apparatus and Method for Channel Information Feedback in Wireless Communication System.” US Patent, 10,158,408 B2. Filing Date: Mar. 27, 2014.

  6. S. Ro, M. Agrawal, D. J. Love, J. Choi, and J. Lee, "Method and Apparatus for using Channel Output Feedback in Multi User Wireless Systems and Hybrid-ARQ." US Patent, 9,161,247 B2. Filing Date: Oct. 21, 2013.

  7. S. Ro, J. Choi, D. J. Love, and J. Lee, "Differential Codebook for Temporally-Correlated MISO Dual-Polarized Antenna." US Patent, 8,953,707 B2. Filing Date: Oct. 19, 2012.

  8. B. Clerckx, J. Choi, and K. Kim, “Method and Apparatus for Feedback in Multi-user Multiple-Input Multiple-Output (MU-MIMO) Communication System.” US Patent, 8,948,104 B2. Filing Date: Sep. 29, 2011.

  9. J. Choi, B. Clerckx, and K. Kim, "Codebook for Eight Transmit Antennas and Multiple-Input Multiple-Output Communication System Using the Codebook." US Patent, 8,654,878 B2. Filing Date: Aug. 16, 2011.

  10. H. Li, J. Choi, and B. Clerckx, "Method and Device for Low-Complexity Feedback in a Multiuser and Multipoint Cooperative Communication System." US Patent, 9,735,853 B2, Filing Date: May 11, 2011.

  11. J. Choi, B. Clerckx, and K. Kim, "Multiple-Input Multiple-Output Communication System Using Codebook Corresponding to Each Reporting Mode." US Patent, 9,876,553 B2, Filing Date: Apr. 29, 2011.

  12. K. Kim, B. Clerckx, J. Choi, I. Lee, S. Park, H. Park, and H. Kong, "Multiple-Input Multiple-Output (MIMO) Communication System Using Regularized Beamforming." US Patent, 8,638,873 B2. Filing Date: Mar. 4, 2011.

  13. B. Clerckx, K. Kim, J. Choi, and J. Han, "Unified Feedback Frame for Supporting a Plurality of Feedback Modes and a Multiple-Input Multiple-Output (MIMO) Communication System Using the Unified Feedback Frame." US Patent, 8,711,963 B2. Filing Data: Feb. 1, 2011.

  14. B. Clerckx, J. Choi, T. Kim, O. Aluko, and D. J. Love, "Method and Apparatus for Sharing Channel State Information (CSI) in a Multiple-user Multiple-Input Multiple-Output (MU-MIMO) Environment." US Patent, 8,976,850 B2. Filing Data: Dec. 30, 2010.

  15. J. Choi, B. Clerckx, K. Kim, D. J. Love, and T. Kim, “Multiple-Input Multiple-Output (MIMO) Communication System Using a Codebook and Method of Designing the Codebook.” US Patent, 9,319,251 B2. Filing Date: Dec. 28, 2010.

  16. J. Choi, B. Clerckx, K. Kim, D. J. Love, and T. Kim, "Method of Generating Adaptive Codebook and Multiple-Input Multiple-Output Communication System Using the Adaptive Codebook." US Patent, 8,724,728 B2. Filing Date: Dec. 1, 2010.

  17. B. Clerckx, J. Choi, and K. Kim, “Method and Apparatus for Feedback in Multi-User Multiple-Input Multiple-Output (MU-MIMO) Communication System.” US Patent, 10,469,237 B2. Filing Date: Sep. 29, 2010.

  18. B. Clerckx, K. Kim, J. Choi, D. J. Love, T. Kim, C. Au-Yeung, and O. Aluko, "Clustered Multi-Cell Multi-User Multiple Input Multiple Output Communication System Using Cell-Edge User Selection Scheme." US Patent, 8,599,751 B2. Filing Date: Sep. 13, 2010.

  19. B. Clerckx, K. Kim, J. Choi, D. J. Love, and T. Kim, "Codebook for Multiple Input Multiple Output Communication and Communication Device using the Codebook." US Patent, 8,532,042 B2. Filing Date: Sep. 2, 2010.

  20. B. Clerckx, S. Park, J. Choi, and D. Mazzarese, "Multiple-Input Multiple-Output Communication System Using Explicit Feedback." US Patent, 8,494,074 B2. Filing Date: Aug. 9, 2010.

  21. J. Choi, B. Clerckx, and K. Kim, “Codebook Design Method for Multiple-Input Multiple-Output (MIMO) Communication System and Method for Using the Codebook.” US Patent, 8,958,495 B2. Filing Date: Jul. 14, 2010.

  22. J. Choi, B. Clerckx, and K. Kim, "Rotating Reference Codebook that is used in a Multiple-Input Multiple-Output (MIMO) Communication Systems." US Patent, 8,488,708 B2. Filing Date: Jun. 21, 2010.

  23. B. Clerckx, K. Kim, J. Choi, D. J. Love, and T. Kim, "Multiple-Input Multiple-Output Communication System and Communication Method of Configuring Codebook." US Patent, 8,477,663 B2. Filing Date: Jun. 1, 2010.

  24. J. Choi, C. Park, K. Park, Y. Ko, and J. Lee, "Data Transmission System for Forwarding Data using a Plurality of Antennas." US Patent, 8,254,830 B2. Filing Date: May 14, 2009.

  25. Y. Zhou, and J. Choi, "Multiple-Input Multiple-Output (MIMO) Communication System for Feedforwarding Interference Vector Indicator." US Patent, 8,553,787 B2. Filing Date: Jan. 9, 2009.

  26. J. Choi, and Y. Zhou, "Codebook for Multiple User Multiple Input Multiple Output System and Communication Device using the Codebook." US Patent, 8,031,090 B2. Filing Date: Oct. 13, 2008.

  27. B. Clerckx, J. Choi, and S. Kim, "Multiple-Input Multiple-Output Communication System Control Method and Apparatus." US Patent, 8,867,646 B2. Filing Date: Jul. 16, 2008.

  28. Y. Zhou, J. Choi, and S. Kim, "Multiple-Input Multiple-Output (MIMO) Communication Method and System of Enabling the Method." US Patent, 8,228,810 B2. Filing Date: Jun. 24, 2008.

  29. J. Suh, S. Kim, P. Kuo, and J. Choi, "Method of Space Division Multiple Access Communication Using User Cooperation and System of Enabling the Method." US Patent, 8,010,140 B2. Filing Date: May 12, 2008.

Patents

  1. H. Kim, J. Choi*, and D. J. Love, "ML-based Channel Prediction for Future Wireless Communications: Advances, Challenges, and Future Research Directions," submitted to IEEE Communications Magazine, Nov. 2023.

  2. J. Cha, H. Kim, and J. Choi*, "Meta-Learning-Based People Counting and Localization Models Employing CSI from Commodity WiFi NICs," submitted to IEEE Journal on Selected Areas in Communications, Oct. 2023. 

  3. B. Ko, H. Kim, M. Kim, and J. Choi*, "Machine Learning-based Channel Prediction in Wideband Massive MIMO Systems with Small Time Overhead for Online Training," submitted to IEEE Transactions on Communications, Sep. 2023.

  4. G. Lee, H. Lee, D. Kim, J. Chung, A. L. Swindlehurst, and J. Choi*, "Joint Downlink and Uplink Optimization for RIS-Aided FDD MIMO Communication Systems," submitted to IEEE Transactions on Wireless Communications, Aug. 2023.

  5. H. Lee, S. Moon, Y. Lee, J. Oh, J. Chung, and J. Choi*, "Multi-Group Multicasting Systems Using Multiple RISs," submitted to IEEE Transactions on Wireless Communications, Feb. 2023.

[Accepted/Published]

[Submitted]

bottom of page