4 papers
Two-Timescale Joint Transmit and Pinching Beamforming for Pinching-Antenna Systems
Luyuan Zhang, Xidong Mu, An Liu +1
Pinching antenna systems (PASS) have been proposed as a revolutionary flexible antenna technology which facilitates line-of-sight links via numerous low-cost pinching antennas with…
Multi-User Pilot Pattern Optimization for Channel Extrapolation in 5G NR Systems
Yubo Wan, An Liu, Tony Q. S. Quek
Pilot pattern optimization in orthogonal frequency division multiplexing (OFDM) systems has been widely investigated due to its positive impact on channel estimation. In this paper…
A Two-Stage 2D Channel Extrapolation Scheme for TDD 5G NR Systems
Yubo Wan, An Liu
Recently, channel extrapolation has been widely investigated in frequency division duplex (FDD) massive MIMO systems. However, in time division duplex (TDD) fifth generation (5G) n…
A Stochastic Particle Variational Bayesian Inference Inspired Deep-Unfolding Network for Non-Convex Parameter Estimation
Zhixiang Hu, An Liu, Minjian Zhao
Future wireless networks are envisioned to provide ubiquitous sensing services, which also gives rise to a substantial demand for high-dimensional non-convex parameter estimation,…