311 citations · 1.6k across the 76 of their papers we have counts for
8 papers · 1 filter
Coverage Probability Analysis of IRS-Aided Communication Systems
Zhuangzhuang Cui, Ke Guan, Jiayi Zhang +1
The intelligent reflective surface (IRS) technology has received many interests in recent years, thanks to its potential uses in future wireless communications, in which one of the…
Physical Layer Security Enhancement With Reconfigurable Intelligent Surface-Aided Networks
Jiayi Zhang, Hongyang Du, Qiang Sun +2
Reconfigurable intelligent surface (RIS)-aided wireless communications have drawn significant attention recently. We study the physical layer security of the downlink RIS-aided tra…
Secrecy Performance of Body-Centric Communications over Alternate Rician Shadowed Fading Channels
Xiaoqi Wang, Jiayi Zhang, Hongyang Du +2
In this paper, we investigate the physical layer security over the Alternate Rician Shadowed fading channel, which is a novel channel model for body-centric wireless links and land…
Performance and Optimization of Reconfigurable Intelligent Surface Aided THz Communications
Hongyang Du, Jiayi Zhang, Ke Guan +4
TeraHertz (THz) communications can satisfy the high data rate demand with massive bandwidth. However, severe path attenuation and hardware imperfection greatly alleviate its perfor…
Cell-Free Massive MIMO with Channel Aging and Pilot Contamination
Jiakang Zheng, Jiayi Zhang, Emil Björnson +1
In this paper, we investigate the impact of channel aging on the performance of cell-free (CF) massive multiple-input multiple-output (MIMO) systems with pilot contamination. To ta…
Structured Massive Access for Scalable Cell-Free Massive MIMO Systems
Shuaifei Chen, Jiayi Zhang, Emil Björnson +2
How to meet the demand for increasing number of users, higher data rates, and stringent quality-of-service (QoS) in the beyond fifth-generation (B5G) networks? Cell-free massive mu…
On the Performance of Dual-Hop Systems over Mixed FSO/mmWave Fading Channels
Yan Zhang, Jiayi Zhang, Liang Yang +2
Free-space optical (FSO) links are considered as a cost-efficient way to fill the backhaul/fronthaul connectivity gap between millimeter wave (mmWave) access networks and optical f…
Millimeter Wave Communications With Reconfigurable Intelligent Surface: Performance Analysis and Optimization
Hongyang Du, Jiayi Zhang, Julian Cheng +2
Reconfigurable Intelligent Surface (RIS) can create favorable multipath to establish strong links that are useful in millimeter wave (mmWave) communications. While previous works u…