5 papers
Mixture-of-Experts Diffusion Models for Adaptive Massive MIMO Channel Estimation via Variational Bayesian Inference
Zhuorui Jiang, Jun Fang, Boyu Ning +2
Channel estimation is essential to massive multiple-input multiple-output (MIMO) systems. While recent generative model-based approaches using lightweight diffusion models (DMs) ha…
Integrated Channel Estimation and Sensing for Near-Field ELAA Systems via Low-Rank Tensor Decomposition
Jionghui Wang, Jun Fang, Hongbin Li +1
In this paper, we study the problem of uplink channel estimation for near-filed orthogonal frequency division multiplexing (OFDM) systems, where a base station (BS), equipped with…
Line Spectral Estimation with Unlimited Sensing
Hongwei Wang, Jun Fang, Hongbin Li +1
In the paper, we consider the line spectral estimation problem in an unlimited sensing framework (USF), where a modulo analog-to-digital converter (ADC) is employed to fold the inp…
CSI-Free Position Optimization for Movable Antenna Communication Systems: A Black-Box Optimization Approach
Xianlong Zeng, Jun Fang, Bin Wang +2
Movable antenna (MA) is a new technology which leverages local movement of antennas to improve channel qualities and enhance the communication performance. Nevertheless, to fully r…
Intelligent Reflecting Surface-Assisted NLOS Sensing With OFDM Signals
Jilin Wang, Jun Fang, Hongbin Li +1
This work addresses the problem of intelligent reflecting surface (IRS) assisted target sensing in a non-line-of-sight (NLOS) scenario, where an IRS is employed to facilitate the r…