Title :
Adaptive Transmission Strategy for Two-Way Relaying Using Physical-Layer Network Coding
Author :
Du, Haiming ; Liang, Wanyong ; Cui, Guangzhao
Author_Institution :
Coll. of Electr. & Inf. Eng., Zhengzhou Univ. of Light Ind., Zhengzhou, China
Abstract :
Two-way relaying is an efficient way to improve the network capacity significantly. Making use of the broadcast nature of the wireless network, physical-layer network coding (PLNC) has been evidently shown to improve the spectral efficiency further. However it has a poor performance at low SNR. In this paper, the three-node cooperative transmission is considered, where PLNC is used at the relay node. An adaptive transmission strategy is proposed to solve the issue. The transmission strategy, which is based on instantaneous channel quality, is selected to offer maximum total system capacity. The efficiency of the proposed solution is demonstrated by both analytical performance and simulations.
Keywords :
cooperative communication; network coding; radio networks; adaptive transmission strategy; instantaneous channel quality; maximum total system capacity; network capacity; physical-layer network coding; relay node; spectral efficiency; three-node cooperative transmission; two-way relaying; wireless network; Bit error rate; Network coding; Protocols; Relays; Signal to noise ratio; Throughput; Wireless communication;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6250-6
DOI :
10.1109/wicom.2011.6040032
