Network-Coded Relaying in Multiuser Multicast D2D Network

Author:

Dai Mingjun123ORCID,Zhang Shengli123ORCID,Wang Hui123,Chen Bin123,Lin Xiaohui123,Liu Hongwei123ORCID,Zhang Li123

Affiliation:

1. Shenzhen Key Lab of Advanced Communication and Information Processing, The College of Information Engineering, Shenzhen University, Shenzhen 518060, China

2. The State Key Laboratory of Integrated Services Networks, Xidian University, Xi’an 710071, China

3. Shenzhen Key Laboratory of Media Security, Shenzhen University, Shenzhen 518060, China

Abstract

D2D communication trades short-range communication for achieving high communication rate and short communication latency. Relay aided D2D communication can further tackle the problem of intermediate obstacles blocking the communication. In this work, multidevice multicast communication via a layer of parallel relay nodes is considered. Two relaying strategies, respectively, called the conventional relaying (CR) and network-coded relaying (NCR), are proposed. The throughput of these two schemes is analytically derived and evaluated through numerical study. Theoretically, NCR shows advantage over CR in twofold: one is higher throughput and the other is requiring less relay nodes and, hence, consuming less aggregate power. Numerical studies verify the analysis and show that the throughput performance gap between the two schemes increases significantly, actually exponentially with the number of devices.

Funder

National Natural Science Foundation of China

Publisher

Hindawi Limited

Subject

Electrical and Electronic Engineering

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