164 citations · 625 across the 62 of their papers we have counts for
10 papers · 1 filter
On the Ergodic Mutual Information of Keyhole MIMO Channels With Finite-Alphabet Inputs
Chongjun Ouyang, Ali Bereyhi, Saba Asaad +3
This letter studies the ergodic mutual information (EMI) of keyhole multiple-input multiple-output channels having finite-alphabet input signals. The EMI is first investigated for…
Asymptotic Average Mutual Information Over Finite Input Mixture Gamma Distributed Channels
Chongjun Ouyang, Sheng Wu, Chunxiao Jiang +3
This letter establishes a unified analytical framework to study the asymptotic average mutual information (AMI) of mixture gamma (MG) distributed fading channels driven by finite i…
Multi-Pair Two-Way Massive MIMO DF Relaying Over Rician Fading Channels Under Imperfect CSI
Zhangjie Peng, Shuxian Wang, Cunhua Pan +3
We investigate a multi-pair two-way decode-andforward relaying aided massive multiple-input multiple-output antenna system under Rician fading channels, in which multiple pairs of…
Secrecy Capacity Bounds for Visible Light Communications With Signal-Dependent Noise
Jin-Yuan Wang, Xian-Tao Fu, Jun-Bo Wang +3
In physical-layer security, one of the most fundamental issues is the secrecy capacity. The objective of this paper is to determine the secrecy capacity for an indoor visible light…
Beam Tracking for UAV-Assisted FSO Links With a Four-Quadrant Detector
Hossein Safi, Akbar Dargahi, Julian Cheng
A ground-to-air free-space optical link is studied for a hovering unmanned aerial vehicle (UAV) having multiple rotors. For this UAV, a four-quadrant array of photodetectors is use…
Outage Analysis and Beamwidth Optimization for Positioning-Assisted Beamforming
Bingcheng Zhu, Zaichen Zhang, Julian Cheng
Conventional beamforming is based on channel estimation, which can be computationally intensive and inaccurate when the antenna array is large. In this work, we study the outage pr…
Hovering UAV-Based FSO Communications: Channel Modelling, Performance Analysis, and Parameter Optimization
Jin-Yuan Wang, Yang Ma, Rong-Rong Lu +3
Relay-assisted free-space optical (FSO) communication systems are exploited as a means to mitigate the limiting effects of the turbulence induced atmospheric scintillation. However…
Sparse Channel Reconstruction With Nonconvex Regularizer via DC Programming for Massive MIMO Systems
Pengxia Wu, Hui Ma, Julian Cheng
Sparse channel estimation for massive multiple-input multiple-output systems has drawn much attention in recent years. The required pilots are substantially reduced when the sparse…
A Splitting-Detection Joint-Decision Receiver for Ultrasonic Intra-Body Communications
Qianqian Wang, Quansheng Guan, Julian Cheng +1
Ultrasonic intra-body communication (IBC) is a promising enabling technology for future healthcare applications, due to low attenuation and medical safety of ultrasonic waves for t…
Nonconvex Regularized Gradient Projection Sparse Reconstruction for Massive MIMO Channel Estimation
Pengxia Wu, Julian Cheng
Novel sparse reconstruction algorithms are proposed for beamspace channel estimation in massive multiple-input multiple-output systems. The proposed algorithms minimize a least-squ…