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This paper studies a cooperative cognitive radio network where two primary users (PUs) exchange information with the help of a secondary user (SU) that is equipped with multiple antennas and in return, the SU superimposes its own messages…

Information Theory · Computer Science 2015-06-11 Rui Wang , Meixia Tao , Yuan Liu

This paper presents a novel two-way decode-and-forward (DF) relay strategy for Orthogonal Frequency Division Multiplexing (OFDM) relay networks. This DF relay strategy employs multi-subcarrier joint channel coding to leverage frequency…

Information Theory · Computer Science 2016-11-17 Fei He , Yin Sun , Xiang Chen , Limin Xiao , Shidong Zhou

In this work, we propose a novel partial compress-and-forward (PCF) scheme for improving the maximum achievable transmission rate of a diamond relay network with two noisy relays. PCF combines conventional compress-and-forward (CF) and…

Information Theory · Computer Science 2024-01-12 Weihang Ding , Mohammad Shikh-Bahaei

In this paper, energy efficiency of relay-assisted millimeter wave (mmWave) cellular networks with Poisson Point Process (PPP) distributed base stations (BSs) and relay stations (RSs) is analyzed using tools from stochastic geometry. The…

Information Theory · Computer Science 2015-10-21 Esma Turgut , M. Cenk Gursoy

This paper studies the setup of a multiple-relay network in which $K$ half-duplex multiple-antenna relays assist in the transmission between a/several multiple-antenna transmitter(s) and a multiple-antenna receiver. Each two nodes are…

Information Theory · Computer Science 2008-06-08 Shahab Oveis Gharan , Alireza Bayesteh , Amir K. Khandani

In this paper, we consider the relaying of orthogonal space time block codes (OSTBCs) in a two-way amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay system with estimated channel state information (CSI). A simple four…

Information Theory · Computer Science 2014-07-07 Arti M. K. , Manav R. Bhatnagar

In this paper, we consider an unmanned aerial vehicle (UAV) aided mobile relaying system under a buffer constraint. We propose a new relaying protocol employing mixed free-space optical/radio frequency (FSO/RF) communication, i.e., the…

Information Theory · Computer Science 2020-07-08 Ju-Hyung Lee , Ki-Hong Park , Young-Chai Ko , Mohamed-Slim Alouini

In this paper, we consider a wireless powered multi-relay network in which a multi-antenna hybrid access point underlaying a cellular system transmits information to distant receivers. Multiple relays capable of energy harvesting are…

Information Theory · Computer Science 2018-10-23 Jing Xu , Yuze Zou , Shimin Gong , Lin Gao , Dusit Niyato , Wenqing Cheng

Considering two-hop cooperative communication with buffered half-duplex relays, this work jointly optimizes relay selection and transmit power at the relay to maximize the sum-throughput of the network subject to a minimum throughput…

Information Theory · Computer Science 2020-11-26 F. A. Khan , Z. A. Malik , A. A. Nasir , M. Masood

In this paper, we consider a parallel relay network where two relays cooperatively help a source transmit to a destination. We assume the source and the destination nodes are equipped with multiple antennas. Three basic schemes and their…

Information Theory · Computer Science 2017-01-27 Muryong Kim , Sae-Young Chung

In this paper we explore the use of full-duplex radio to improve the spectrum efficiency in a two-way relay channel where two sources exchange information through an multi-antenna relay, and all nodes work in the full-duplex mode. The…

Information Theory · Computer Science 2015-06-23 Gan Zheng

Two-way is a dominant mode of communication in wireless systems. Departing from the tradition to optimize each transmission direction separately, recent work has demonstrated that, for time-division duplex (TDD) systems, optimizing the…

Information Theory · Computer Science 2016-11-17 Petar Popovski , Osvaldo Simeone , Jimmy J. Nielsen , Čedomir Stefanović

In this paper the advantages provided by multicell processing of signals transmitted by mobile terminals (MTs) which are received via dedicated relay terminals (RTs) are studied. It is assumed that each RT is capable of full-duplex…

Information Theory · Computer Science 2016-11-17 Oren Somekh , Osvaldo Simeone , H. Vincent Poor , Shlomo Shamai

This paper investigates the outage probability and the throughput of relay networks with wireless information and energy transfer where the relays harvest energy from the transmitted radio-frequency signal of the source. Considering…

Information Theory · Computer Science 2016-07-26 Mahdi Haghifam , Behrooz Makki , Masoumeh Nasiri-Kenari , Tommy Svensson

This paper studies the performance of some state-of-the-art cooperative full-duplex relaying protocols in the context of a large wireless network modelled using stochastic geometry tools. We investigate the outage behaviour for different…

Information Theory · Computer Science 2018-01-12 Andres Altieri , Pablo Piantanida

The simultaneous wireless transfer of information and power with the help of a relay equipped with multiple antennas is considered in this letter, where a harvest-and-forward strategy is proposed. In particular, the relay harvests energy…

Information Theory · Computer Science 2015-06-23 Zheng Zhou , Mugen Peng , Zhongyuan Zhao , Yong Li

This paper investigates the benefits of Amplify-and-Forward (AF) relaying in the setup of multi-antenna wireless networks. The concept of Random Sequential (RS) relaying is previously introduced in the literature and showed that it achieves…

Information Theory · Computer Science 2009-12-22 Shahab Oveis Gharan , Alireza Bayesteh , Amir K. Khandani

We consider "virtual" full-duplex relaying by means of half-duplex relays. In this configuration, each relay stage in a multi-hop relaying network is formed by at least two relays, used alternatively in transmit and receive modes, such that…

Information Theory · Computer Science 2013-11-26 Song-Nam Hong , Giuseppe Caire

In this two part paper we consider a wireless network in which a source terminal communicates with a destination and a relay terminal is occasionally present in close proximity to the source without source's knowledge, suggesting oblivious…

Information Theory · Computer Science 2010-07-27 Evgeniy Braginskiy , Avi Steiner , Shlomo Shamai

Various sectors are likely to carry a set of emerging applications while targeting a reliable communication with low latency transmission. To address this issue, upon a spectrally-efficient transmission, this paper investigates the…

Signal Processing · Electrical Eng. & Systems 2018-04-11 Fatima Ezzahra Airod , Houda Chafnaji , Ahmed Tamtaoui