311 citations · 1.6k across the 76 of their papers we have counts for
19 papers · 1 filter
Asynchronous Cell-Free Massive MIMO With Rate-Splitting
Jiakang Zheng, Jiayi Zhang, Julian Cheng +3
In practical cell-free (CF) massive multiple-input multiple-output (MIMO) networks with distributed and low-cost access points, the asynchronous arrival of signals at the user equi…
Improving Fairness for Cell-Free Massive MIMO Through Interference-Aware Massive Access
Shuaifei Chen, Jiayi Zhang, Emil Björnson +1
Cell-free massive multiple-input multiple-output (CF mMIMO) provides good interference management by coordinating many more access points (APs) than user equipments (UEs). It becom…
Federated Learning-Based Cell-Free Massive MIMO System for Privacy-Preserving
Jiayi Zhang, Jing Zhang, Derrick Wing Kwan Ng +1
Cell-free massive MIMO (CF mMIMO) is a promising next generation wireless architecture to realize federated learning (FL). However, sensitive information of user equipments (UEs) m…
Performance Analysis of Cell-Free Massive MIMO Systems with Asynchronous Reception
Jiakang Zheng, Zhuoyi Zhao, Jiayi Zhang +2
Cell-free (CF) massive multiple-input multiple-output (MIMO) is considered as a promising technology for achieving the ultimate performance limit. However, due to its distributed a…
Decentralized Coordinated Precoding Design in Cell-Free Massive MIMO Systems for URLLC
Enyu Shi, Jing Zhang, Jiayi Zhang +2
Cell-free massive multiple-input multiple-output (MIMO) is a promising network to offer huge improvement of the achievable rate compared with conventional cellular massive MIMO sys…
Uplink Performance of RIS-aided Cell-Free Massive MIMO System Over Spatially Correlated Channels
Enyu Shi, Jiayi Zhang, Zhe Wang +2
We consider a practical spatially correlated reconfigurable intelligent surface (RIS)-aided cell-free (CF) massive multiple-input-multiple-output (mMIMO) system with multi-antenna…
Extremely Large-Scale MIMO: Fundamentals, Challenges, Solutions, and Future Directions
Zhe Wang, Jiayi Zhang, Hongyang Du +4
Extremely large-scale multiple-input-multiple-output (XL-MIMO) is a promising technology to empower the next-generation communications. However, XL-MIMO, which is still in its earl…
Energy-Efficient Cell-Free Massive MIMO Through Sparse Large-Scale Fading Processing
Shuaifei Chen, Jiayi Zhang, Emil Björnson +2
Cell-free massive multiple-input multiple-output (CF mMIMO) systems serve the user equipments (UEs) by geographically distributed access points (APs) by means of joint transmission…
Exploiting Deep Reinforcement Learning for Edge Caching in Cell-Free Massive MIMO Systems
Yu Zhang, Shuaifei Chen, Jiayi Zhang
Cell-free massive multiple-input-multiple-output is promising to meet the stringent quality-of-experience (QoE) requirements of railway wireless communications by coordinating many…
Cell-Free Massive MIMO with Multi-Antenna Users over Weichselberger Rician Channels
Xin Li, Jiayi Zhang, Zhe Wang +2
We consider a cell-free massive multiple-input multiple-output (MIMO) system with multi-antenna access points and user equipments (UEs) over Weichselberger Rician fading channels w…
Sparse Large-Scale Fading Decoding in Cell-Free Massive MIMO Systems
Shuaifei Chen, Jiayi Zhang, Emil Björnson +2
Cell-free massive multiple-input multiple-output (CF mMIMO) systems are characterized by having many more access points (APs) than user equipments (UEs). A key challenge is to dete…
Reconfigurable Intelligent Surface (RIS)-aided Vehicular Networks: Their Protocols, Resource Allocation, and Performance
Yuanbin Chen, Ying Wang, Jiayi Zhang +2
Reconfigurable intelligent surfaces (RISs) assist in paving the way for the evolution of conventional vehicular networks to autonomous driving. Having said that, the 3rd Generation…
Cell-Free Massive MIMO-OFDM for High-Speed Train Communications
Jiakang Zheng, Jiayi Zhang, Emil Björnson +2
Cell-free (CF) massive multiple-input multiple-output (MIMO) systems show great potentials in low-mobility scenarios, due to cell boundary disappearance and strong macro diversity.…
Treating Interference as Noise in Cell-Free Massive MIMO Networks
Shuaifei Chen, Jiayi Zhang, Zheng Chen +1
How to manage the interference introduced by the enormous wireless devices is a crucial issue to address in the prospective sixth-generation (6G) communications. The treating inter…
Wireless Energy Transfer in RIS-Aided Cell-Free Massive MIMO Systems: Opportunities and Challenges
Enyu Shi, Jiayi Zhang, Shuaifei Chen +4
In future sixth-generation (6G) mobile networks, the Internet-of-Everything (IoE) is expected to provide extremely massive connectivity for small battery-powered devices. Indeed, m…
Iteratively Weighted MMSE Uplink Precoding for Cell-Free Massive MIMO
Zhe Wang, Jiayi Zhang, Hien Quoc Ngo +2
In this paper, we investigate a cell-free massive MIMO system with both access points and user equipments equipped with multiple antennas over the Weichselberger Rayleigh fading ch…
Uplink Performance of High-Mobility Cell-Free Massive MIMO-OFDM Systems
Jiakang Zheng, Jiayi Zhang, Enyu Shi +2
High-speed train (HST) communications with orthogonal frequency division multiplexing (OFDM) techniques have received significant attention in recent years. Besides, cell-free (CF)…
Team-Optimal MMSE Combining for Cell-Free Massive MIMO Systems
Jiakang Zheng, Jiayi Zhang, Bo Ai
Cell-free (CF) massive multiple-input multiple-output (MIMO) systems are expected to implement advanced cooperative communication techniques to let geographically distributed acces…
Reconfigurable Intelligent Surfaces with Outdated Channel State Information: Centralized vs. Distributed Deployments
Yan Zhang, Jiayi Zhang, Marco Di Renzo +2
In this paper, we investigate the performance of an RIS-aided wireless communication system subject to outdated channel state information that may operate in both the near- and far…