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This paper considers a multi-way massive multiple-input multiple-output relaying system, where single-antenna users exchange their information-bearing signals with the help of one relay station equipped with unconventionally many antennas.…

Information Theory · Computer Science 2016-11-04 Chung Duc Ho , Hien Quoc Ngo , Michail Matthaiou , Trung Q. Duong

We consider a two-way half-duplex relaying system where multiple pairs of single antenna users exchange information assisted by a multi-antenna relay. Taking into account the practical constraint of imperfect channel estimation, we study…

Information Theory · Computer Science 2016-07-07 Chuili Kong , Caijun Zhong , Michail Matthaiou , Emil Björnson , Zhaoyang Zhang

We consider a two-way half-duplex decode-and-forward (DF) relaying system with multiple pairs of single-antenna users assisted by a cell-free (CF) massive multiple-input multiple-output (mMIMO) architecture with multiple-antenna access…

Information Theory · Computer Science 2024-10-28 Anastasios K. Papazafeiropoulos , Pandelis Kourtessis , Symeon Chatzinotas , John M. Senior

This paper considers a multipair amplify-and-forward massive MIMO relaying system with low-resolution ADCs at both the relay and destinations. The channel state information (CSI) at the relay is obtained via pilot training, which is then…

Information Theory · Computer Science 2017-05-16 Chuili Kong , Caijun Zhong , Shi Jin , Sheng Yang , Hai Lin , Zhaoyang Zhang

In this paper, we consider a dual-hop Multiple Input Multiple Output (MIMO) wireless multi-relay network, in which a source-destination pair both equipped with multiple antennas communicates through multiple half-duplex amplify-and-forward…

Signal Processing · Electrical Eng. & Systems 2020-03-20 Zijian Wang , Wen Chen

Relay systems improve both coverage and system capacity. Towards this direction, full-duplex (FD) technology, being able to boost the spectral efficiency by transmitting and receiving simultaneously on the same frequency and time resources,…

Information Theory · Computer Science 2018-06-15 Anastasios Papazafeiropoulos , Tharmalingam Ratnarajah

This paper considers a multi-pair two-way amplify-and-forward relaying system, where multiple pairs of full-duplex users are served via a full-duplex relay with massive antennas, and the relay adopts maximum-ratio combining/maximum-ratio…

Information Theory · Computer Science 2016-12-15 Zhanzhan Zhang , Zhiyong Chen , Manyuan Shen , Bin Xia , Weiliang Xie , Yong Zhao

We consider two-way amplify and forward relaying, where multiple full-duplex user pairs exchange information via a shared full-duplex massive multiple-input multiple-output (MIMO) relay. We derive closed-form lower bound for the spectral…

Information Theory · Computer Science 2017-10-04 Ekant Sharma , Rohit Budhiraja , K Vasudevan

The performance of a multiuser communication system with single-antenna transmitting terminals and a multi-antenna base-station receiver is analytically investigated. The system operates under independent and non-identically distributed…

Information Theory · Computer Science 2016-10-27 Nikolaos I. Miridakis , Theodoros A. Tsiftsis , Corbett Rowell

We consider a multiple-input multiple-output (MIMO) relaying boardcast channel in downlink cellular networks, where the base station and the relay stations are both equipped with multiple antennas, and each user terminal has only a single…

Signal Processing · Electrical Eng. & Systems 2020-03-24 Zijian Wang , Wen Chen , Jun Li

In this paper, we consider a dual-hop Multiple Input Multiple Output (MIMO) wireless relay network in the presence of imperfect channel state information (CSI), in which a source-destination pair both equipped with multiple antennas…

Signal Processing · Electrical Eng. & Systems 2020-03-24 Zijian Wang , Wen Chen , Feifei Gao , Jun Li

In this paper we study and analyze coverage region for half-duplex multiple-input multiple-output (MIMO) relay channel with amplify-and-forward (AF) strategy at the relay station. By assuming mixed Rayleigh and Rician fading channels with…

Information Theory · Computer Science 2014-10-14 Behrooz Razeghi , Ghosheh Abed Hodtani , Seyed Alireza Seyedin

We consider a multipair massive multiple-input multiple-output (MIMO) two-way relaying system, where multiple pairs of single-antenna devices exchange data with the help of a relay employing a large number of antennas $N$. The relay…

Information Theory · Computer Science 2017-09-12 Jiayi Zhang , Xipeng Xue , Emil Björnson , Bo Ai , Shi Jin

This paper investigates double RIS-assisted MIMO communication systems over Rician fading channels with finite scatterers, spatial correlation, and the existence of a double-scattering link between the transceiver. First, the statistical…

Information Theory · Computer Science 2023-09-11 Ha An Le , Trinh Van Chien , Van Duc Nguyen , Wan Choi

Utilizing relaying techniques to improve performance of wireless systems is a promising avenue. However, it is crucial to understand what type of relaying schemes should be used for achieving different performance objectives under realistic…

Information Theory · Computer Science 2011-04-04 George C. Alexandropoulos , Agisilaos Papadogiannis , Paschalis C. Sofotasios

In this paper, we consider a dual-hop Multiple Input Multiple Output (MIMO) relay wireless network, in which a source-destination pair both equipped with multiple antennas communicates through a large number of half-duplex…

Networking and Internet Architecture · Computer Science 2013-02-07 Yu Zhang , Hanwen Luo , Wen Chen

We consider a multipair decode-and-forward relay channel, where multiple sources transmit simultaneously their signals to multiple destinations with the help of a full-duplex relay station. We assume that the relay station is equipped with…

Information Theory · Computer Science 2014-05-07 Hien Quoc Ngo , Himal A. Suraweera , Michail Matthaiou , Erik G. Larsson

We consider two-way amplify and forward relaying, where multiple full-duplex user pairs exchange information via a shared full-duplex massive multiple-input multiple-output (MIMO) relay. Most of the previous massive MIMO relaying works…

Information Theory · Computer Science 2017-10-05 Ekant Sharma , Rohit Budhiraja , K Vasudevan , Lajos Hanzo

This paper considers a multipair amplify-and-forward massive MIMO relaying system with one-bit ADCs and one-bit DACs at the relay. The channel state information is estimated via pilot training, and then utilized by the relay to perform…

Information Theory · Computer Science 2018-05-23 Chuili Kong , Amine Mezghani , Caijun Zhong , A. Lee Swindlehurst , Zhaoyang Zhang

With the denser distribution of antenna elements, stronger mutual coupling effects would kick in among antenna elements, which would eventually affect the communication performance. Meanwhile, as the holographic array usually has large…

Information Theory · Computer Science 2026-01-01 Mengyu Qian , Xidong Mu , Li You , Hyundong Shin , Michail Matthaiou
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