Active channel sparsification

Dual-Polarized FDD Massive MIMO: A Comprehensive Framework

We propose a comprehensive scheme for realizing a massive multiple-input multiple-output (MIMO) system with dual-polarized antennas in frequency division duplexing (FDD) mode. IEEE Transactions on Wireless Communications, Feb. 2022.

FDD massive MIMO via UL/DL channel covariance extrapolation and active channel sparsification

We propose active channel sparsification, a method of training multi-user MIMO Downlink channels in FDD mode with any given pilot length, while maximizing the effective channel matrix rank. IEEE Transactions on Wireless Communications, 2019.