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This paper considers secrecy of a three node cooperative wireless system in the presence of a passive eavesdropper. The threshold-selection decode-and-forward (DF) relay is considered, which can decode the source message correctly only if a…

Signal Processing · Electrical Eng. & Systems 2018-03-05 Chinmoy Kundu , Sarbani Ghose , Telex M. N. Ngatched , Octavia A. Dobre , Trung Q. Duong , Ranjan Bose

An opportunistic relay selection based on instantaneous knowledge of channels is considered to increase security against eavesdroppers. The closed-form expressions are derived for the average secrecy rates and the outage probability when…

Information Theory · Computer Science 2010-04-09 Xiaojun Sun , Chunming Zhao , Ming Jiang

We study the diversity-multiplexing tradeoff (DMT) for the slow fading interference channel with a relay (ICR). We derive four inner bounds on the DMT region: the first is based on the compress-and-forward (CF) relaying scheme, the second…

Information Theory · Computer Science 2014-12-16 Daniel Zahavi , Lili Zhang , Ivana Maric , Ron Dabora , Andrea J. Goldsmith , Shuguang Cui

This letter investigates the impact of co-channel interference (CCI) on the performance of a decode-and-forward (DF) relaying network with a reconfigurable intelligent surface (RIS)-assisted source. We consider one source, multiple DF…

Signal Processing · Electrical Eng. & Systems 2020-11-11 Doaa Salim , Monjed H. Samuh , Anas M. Salhab

A multi-hop two-way relay channel is considered in which all the terminals are equipped with multiple antennas. Assuming independent quasi-static Rayleigh fading channels and channel state information available at the receivers, we…

Information Theory · Computer Science 2008-12-19 Deniz Gunduz , Andrea Goldsmith , H. Vincent Poor

In this letter, we present an end-to-end performance analysis of dual-hop project-and-forward relaying in a realistic scenario, where the source-relay and the relay-destination links are experiencing MIMO-pinhole and Rayleigh channel…

Information Theory · Computer Science 2016-03-10 Hatim Chergui , Mustapha Benjillali , Samir Saoudi

In this paper, we investigate the joint spectrum sensing and resource allocation problem to maximize throughput capacity of an OFDM-based cognitive radio link with a cognitive relay. By applying a cognitive relay that uses decode and…

Information Theory · Computer Science 2015-11-16 S. Eman Mahmoodi , K. P. Subbalakshmi , R. Chandramouli , Bahman Abolhassani

We study the half-duplex multiple-relay channel (HD-MRC) where every node can either transmit or listen but cannot do both at the same time. We obtain a capacity upper bound based on a max-flow min-cut argument and achievable transmission…

Information Theory · Computer Science 2012-12-04 Lawrence Ong , Mehul Motani , Sarah J. Johnson

In this paper, we investigate network nest coded modulation schemes for multiple access relay channels. The performance of the distributed systems which are based on distributed convolutional codes with network coded modulation is…

Information Theory · Computer Science 2022-03-16 Zihuai Lin

In this paper, we investigate a simultaneous wireless information and power transfer (SWIPT) based two-way decode-and-forward (DF) relay network, where time switching (TS) is employed for SWIPT and time division broadcast (TDBC) is employed…

Information Theory · Computer Science 2018-12-18 Liqin Shi , Yinghui Ye , Xiaoli Chu , Yangyang Zhang , Hailin Zhang

In this manuscript, two novel multi-hop relay-assisted hybrid Free Space Optical / Radio Frequency (FSO / RF) communication systems are presented and compared. In these structures, RF and FSO links, at each hop, are parallel and send data…

Signal Processing · Electrical Eng. & Systems 2018-11-21 Mohammad Ali Amirabadi

This paper describes the limiting behavior of linear and decision feedback equalizers (DFEs) in single/multiple antenna systems employing real/complex-valued modulation alphabets. The wideband frequency selective channel is modeled using a…

Information Theory · Computer Science 2013-07-16 Kiran Kuchi

In this paper, we address the problem of optimal power allocation at the relay in two-hop secure communications under practical conditions. To guarantee secure communication during the long-distance transmission, the massive MIMO (M-MIMO)…

Information Theory · Computer Science 2015-09-01 Jian Chen , Xiaoming Chen , Wolfgang Gerstacker

In this paper, we study a dual-hop mixed power line communication and radio-frequency communication (PLC/RF) system, where the connection between the PLC link and the RF link is made by a decode-and-forward (DF) or amplify-and-forward (AF)…

Information Theory · Computer Science 2020-11-19 Liang Yang , Xiaoqin Yan , Sai Li , Daniel Benevides da Costa , Mohamed-Slim Alouini

This chapter presents joint interference suppression and power allocation algorithms for DS-CDMA and MIMO networks with multiple hops and amplify-and-forward and decode-and-forward (DF) protocols. A scheme for joint allocation of power…

Information Theory · Computer Science 2013-01-28 Patrick Clarke , Rodrigo C. de Lamare

This paper focuses on the design of an optimal resource allocation scheme to maximize the energy efficiency (EE) in a simultaneous wireless information and power transfer (SWIPT) enabled two-way decode-and-forward (DF) relay network under a…

Information Theory · Computer Science 2019-03-20 Liqin Shi , Yinghui Ye , Rose Qingyang Hu , Hailin Zhang

In fading channels, power allocation over channel state may bring a rate increment compared to the fixed constant power mode. Such a rate increment is referred to power allocation gain. It is expected that the power allocation gain varies…

Information Theory · Computer Science 2014-12-25 Zhengchuan Chen , Pingyi Fan , Dapeng Wu , Liquan Shen

In wireless relay networks, noise at the relays can be correlated possibly due to common interference or noise propagation from preceding hops. In this work we consider a parallel relay network with noise correlation. For the relay strategy…

Information Theory · Computer Science 2007-07-13 Krishna S. Gomadam , Syed A. Jafar

We consider a full-duplex (FD) decode-and-forward system in which the time-switching protocol is employed by the multi-antenna relay to receive energy from the source and transmit information to the destination. The instantaneous throughput…

Information Theory · Computer Science 2016-11-17 Mohammadali Mohammadi , Batu K. Chalise , Himal A. Suraweera , Caijun Zhong , Gan Zheng , Ioannis Krikidis

Multiple access technology is a key technology in various generations of wireless communication systems. As a potential multiple access technology for the next generation wireless communication systems, model division multiple access (MDMA)…

Information Theory · Computer Science 2023-11-28 Lei Teng , Wannian An , Chen Dong , Xiaoqi Qin , Xiaodong Xu