Conference Papers

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.

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.

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.

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

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 (ICTC), Oct. 2021.

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 (ISAP), Oct. 2021.

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 (SSP), Jul. 2021.

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 (ICC), Jun. 2021.

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 (ICASSP), Jun. 2021.

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 (WCNC), Mar. 2021.

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 (GlOBECOM), Dec. 2020.

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

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 (PIMRC), Sep. 2020.

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 (ICC), Jun. 2020.

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 (PIMRC), Sep. 2019.

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 (SPAWC), Jul. 2019.

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 (GLOBECOM), Dec. 2018.

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

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 (GLOBECOM), Dec. 2017.

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 (ISIT), Jun. 2017.

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 (ICASSP), Mar. 2017.

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 (GLOBECOM), Dec. 2016.

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 (GLOBECOM), Dec. 2016.

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 (VTC), Sep. 2016.

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), Mar. 2016.

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 (ICASSP), Mar. 2016.

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 (ICASSP), Mar. 2016.

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 (CAMSAP), Dec. 2015.

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 (GLOBECOM), Dec. 2015.

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 (ICC), Jul. 2015.

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 (ICC), Jul. 2015.

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 (ACSSC), Nov. 2014.

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 (ICC), Jul. 2014.

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 (GLOBECOM), Dec. 2013 (Best Paper Award).

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 (ACSSC), Nov. 2013.

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.

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 (CISS), Mar. 2013.

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 (ITA) Workshop, Feb. 2013

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

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

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 (GLOBECOM), Dec. 2008.

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).

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 (WCNC), Apr. 2008.

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 (PIMRC), Sep. 2007.