Journal Papers

H. Cho, B. Ko, B. Clerckx, and J. Choi*, "Coverage Increase at THz Frequencies: A Cooperative Rate-Splitting Approach," IEEE Transactions on Wireless Communications (TWC), vol. 22, no. 12, pp. 9821-9834, Dec. 2023.

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," IEEE Transactions on Wireless Communications (TWC), vol. 22, no. 12, pp. 9732-9745, Dec. 2023.

H. Kim, J. Choi*, and D. J. Love, "Massive MIMO Channel Prediction Via Meta-Learning and Deep Denoising: Is a Small Dataset Enough?," IEEE Transactions on Wireless Communications (TWC), vol. 22, no. 12, pp. 9278-9290, Dec. 2023.

D.-H. 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 (VTM), vol. 18, no. 3, pp. 29-37, Sep. 2023.

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.

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 (TVT), vol. 72, no. 6, pp. 8170-8174, Jun. 2023.

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 (TCOM), vol. 71, no. 4, pp. 2087-2103, Apr. 2023.

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

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

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 (TSP), vol. 70, pp.  4981 - 4996, Oct. 2022.  

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 (TVT), vol. 71, no. 10, pp. 10512-10526, Oct. 2022.

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 (TWC), vol. 21, no. 9, pp. 7343 - 7357, Sep. 2022.

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 (TWC), vol. 21, no.8, pp. 6226 - 6241, Aug. 2022.

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

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

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 (TVT), vol. 71, no. 5, pp. 5587-5592, May 2022.

D.-H. 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 (TCOM), vol. 70, no. 4, pp. 2707-2721, Apr. 2022. 

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

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 (COMML),  vol. 25,  no. 11, pp. 3639-3643,  Nov. 2021.

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 (TWC), vol. 20, no. 9, pp. 6154-6166,  Sep. 2021.

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

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 (TWC), vol. 20, no. 6, pp. 4016-4029, Jun. 2021.

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

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

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 (WCL), vol. 10, no. 4, pp. 730-734, Apr. 2021.

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 (TCOM), vol. 69, no. 1, pp. 518-528, Jan. 2021.

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

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.

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 (EURASIP JWCN), vol. 2019, no. 1, pp. 289, Dec. 2019.

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 (EURASIP JWCN), vol. 2019, no. 1, pp. 267, Dec. 2019.

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

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.

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 (TWC), vol. 17, no. 11, pp. 7173-7189, Nov. 2018.

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 (WCL), vol. 7, no. 5, pp. 784-787, Oct. 2018.

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

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

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 (TSP), vol. 66, no. 14, pp. 3891-3905, May 2018.

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 (TVT), vol. 67, no. 5, pp. 4042-4058, May 2018.

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 (TVT), vol 67, no. 4, pp. 3012-3027, Apr. 2018 (2022 IEEE Vehicular Technology Society Best Vehicular Electronics Paper Award).

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 (TWC), vol. 16, no. 12, pp. 7890-7905, Dec. 2017.

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 (TSP), vol. 65, no. 24, pp. 6462-6477, Dec. 2017.

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 (TVT), vol. 66, no. 9, pp. 8189-8151, Sep. 2017.

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 (TWC), vol. 16, no. 7, pp. 4770-4785, Jul. 2017.

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 (TVT), vol. 66, no. 6, pp. 5014-5029, Jun. 2017 (2021 IEEE Vehicular Technology Society Neal Shepherd Memorial Best Propagation Paper Award).

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. 

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 (TCOM), vol. 65, no. 4, pp. 1859-1872, Apr. 2017.

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 (TWC), vol. 16, no. 1, pp. 87-100, Jan. 2017.

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 (COMMAG), vol. 54, no. 12, pp. 160-167, Dec. 2016.

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.

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 (TCOM), vol. 64, no. 5, pp. 2005-2018, May 2016 (2019 IEEE Communications Society Stephen O. Rice Prize).

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

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 (TWC), vol. 14, no. 11, pp. 6283-6296, Nov. 2015.

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 (TCOM), vol. 63, no. 9, pp. 3261-3274, Sep. 2015.

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

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 (TSP), vol. 63, no. 13, pp. 3537-3548, Jul. 2015.

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 (TWC), vol. 14, no. 4, pp. 2007-2016, Apr. 2015.

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 (TSP), vol. 63, no. 5, pp. 1310-1321, Mar. 2015.

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 (JSTSP), vol. 8, no. 5, pp. 802-814, Oct. 2014 (2015 IEEE Signal Processing Society Best Paper Award).

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

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

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 (TCOM), vol. 61, no. 12, pp. 5016-5029, Dec. 2013.

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 (TWC), vol. 11, no. 2, pp. 703-711, Feb. 2012.

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

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.