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This paper focuses on robust transceiver design for throughput enhancement on the interference channel (IC), under imperfect channel state information (CSI). In this paper, two algorithms are proposed to improve the throughput of the…

Information Theory · Computer Science 2018-04-02 Ali Dalir , Hassan Aghaeinia , Mohammad Kazemi

We study the multi-message broadcast problem using abstract MAC layer models of wireless networks. These models capture the key guarantees of existing MAC layers while abstracting away low-level details such as signal propagation and…

Distributed, Parallel, and Cluster Computing · Computer Science 2014-05-08 Mohsen Ghaffari , Erez Kantor , Nancy Lynch , Calvin Newport

In this paper, we investigate joint source precoding matrices and relay processing matrix design for multi-user multiple-input multiple-output~(MU-MIMO) non-regenerative relay networks in the presence of the direct source-destination~(S-D)…

Signal Processing · Electrical Eng. & Systems 2020-04-02 Haibin Wan , Wen Chen

In order to manage the increasing interference between radar and communication systems, joint radar and communication (RadCom) systems have attracted increased attention in recent years, with the studies so far considering the assumption of…

Signal Processing · Electrical Eng. & Systems 2021-05-04 Rafael Cerna-Loli , Onur Dizdar , Bruno Clerckx

Rate-splitting (RS) has recently been recognized as a promising physical-layer technique for multi-antenna broadcast channels (BC). Due to its ability to partially decode the interference and partially treat the remaining interference as…

Information Theory · Computer Science 2021-01-28 Gui Zhou , Yijie Mao , Bruno Clerckx

Multiuser multiple-input multiple-output wireless communications systems have the potential to satisfy the performance requirements of fifth-generation and future wireless networks. In this context, cell-free (CF) systems, where the…

Information Theory · Computer Science 2021-12-06 André Flores , Rodrigo C. de Lamare , Kumar Vijay Mishra

We consider efficient communications over the multiple-input multiple-output (MIMO) multiway distributed relay channel (MDRC) with full data exchange, where each user, equipped with multiple antennas, broadcasts its message to all the other…

Information Theory · Computer Science 2016-12-28 Xiang Zhao , Jianwen Zhang , Yingjun Zhang , Xiaojun Yuan

We consider a Gaussian multiple-access channel (MAC) with an amplify-and-forward (AF) relay, where all nodes except the receiver have multiple antennas and the direct links between transmitters and receivers are neglected. Thus, spatial…

Information Theory · Computer Science 2015-03-20 Frederic Knabe , Omar Mohamed , Carolin Huppert

The problem of simultaneous multicasting of multiple messages with the help of a relay terminal is considered. In particular, a model is studied in which a relay station simultaneously assists two transmitters in multicasting their…

Information Theory · Computer Science 2009-02-19 Deniz Gunduz , Osvaldo Simeone , Andrea J. Goldsmith , H. Vincent Poor , Shlomo Shamai

This paper analyzes the performance of linearly precoded time division duplex based multi-user massive MIMO downlink system under joint impacts of channel non-reciprocity (NRC) and imperfect channel state information (CSI). We consider a…

Information Theory · Computer Science 2018-03-06 Orod Raeesi , Ahmet Gokceoglu , Yaning Zou , Emil Björnson , Mikko Valkama

In this paper, a novel framework is proposed to optimize the downlink multi-user communication of a millimeter wave base station, which is assisted by a reconfigurable intelligent reflector (IR). In particular, a channel estimation approach…

Information Theory · Computer Science 2021-08-03 Qianqian Zhang , Walid Saad , Mehdi Bennis

This paper unifies integrated sensing and communication (ISAC) and simultaneous wireless information and power transfer (SWIPT), by investigating a new multi-functional multiple-input multiple-output (MIMO) system integrating wireless…

Information Theory · Computer Science 2022-11-01 Yilong Chen , Haocheng Hua , Jie Xu

Mutual Coupling (MC) emerges as an inherent feature in Reconfigurable Intelligent Surfaces (RISs), particularly, when they are fabricated with sub-wavelength inter-element spacing. Hence, any physically-consistent model of the RIS operation…

Information Theory · Computer Science 2024-06-11 Dilki Wijekoon , Amine Mezghani , George C. Alexandropoulos , Ekram Hossain

This paper focuses on molecular communication (MC) systems using two types of signaling molecules which may participate in a reversible bimolecular reaction in the channel. The motivation for studying these MC systems is that they can…

Information Theory · Computer Science 2019-07-25 Vahid Jamali , Nariman Farsad , Robert Schober , Andrea Goldsmith

Area spectral efficiency (ASE) was introduced as a metric to quantify the spectral utilization efficiency of cellular systems. Unlike other performance metrics, ASE takes into account the spatial property of cellular systems. In this paper,…

Networking and Internet Architecture · Computer Science 2014-02-18 Lei Zhang , Hong-Chuan Yang , Mazen O. Hasna

This letter focuses on integrating rate-splitting multiple-access (RSMA) with time-division-duplex Cell-free Massive MIMO (multiple-input multiple-output) for massive machine-type communications. Due to the large number of devices, their…

Signal Processing · Electrical Eng. & Systems 2022-05-06 Anup Mishra , Yijie Mao , Luca Sanguinetti , Bruno Clerckx

This paper develops a molecular integrated sensing and communication (ISAC) framework that exploits the same molecular observations for physical-parameter sensing and data detection. As a representative instantiation, we consider a…

Signal Processing · Electrical Eng. & Systems 2026-05-05 Ruifeng Zheng , Pengjie Zhou , Martín Schottlender , Veronika Volkova , Juan A. Cabrera , Frank H. P. Fitzek , Pit Hofmann

This paper first considers a multicell network deployment where the base station (BS) of each cell communicates with its cell-edge user with the assistance of an amplify-and-forward (AF) relay node. Equipped with a power splitter and a…

Information Theory · Computer Science 2016-11-17 Ali A. Nasir , Duy T. Ngo , Xiangyun Zhou , Rodney A. Kennedy , Salman Durrani

Millimeter wave wireless spectrum deployments will allow vehicular communications to share high data rate vehicular sensor data in real-time. The highly directional nature of wireless links in millimeter spectral bands will require…

Information Theory · Computer Science 2021-03-08 O. Kanhere , A. Chopra , A. Thornburg , T. S. Rappaport , S. S. Ghassemzadeh

This paper presents a stochastic analysis of the time-variant channel impulse response (CIR) of a three dimensional diffusive mobile molecular communication (MC) system where the transmitter, the absorbing receiver, and the molecules can…

Information Theory · Computer Science 2019-08-16 Trang Ngoc Cao , Arman Ahmadzadeh , Vahid Jamali , Wayan Wicke , Phee Lep Yeoh , Jamie Evans , Robert Schober