DocumentCode :
3204434
Title :
Cooperative Communication with Physical-layer Network Coding in Cognitive Radio Network
Author :
Zhongwei Xu ; Xiaoyun Hou ; Hao Wei
Author_Institution :
Inst. of Signal Process. & Transm., Nanjing Univ. of Posts & Telecommun., Nanjing, China
fYear :
2012
fDate :
8-10 Dec. 2012
Firstpage :
1215
Lastpage :
1219
Abstract :
Cognitive radio technology is a promising technology to solve the inefficiency problem of the usage of spectrum, and with the help of the cooperative communication technology, the system can obtain more performance. This paper proposes a cooperative communication strategy based on physical-layer network coding (PNC) to work out the difficulty that the primary cannot communicate, which the secondary user can also access the spectrum. Meanwhile, we also discuss the power allocation scheme and relay selection strategy to maximum the system capacity. With amplify forward (AF), the secondary forwards the signal after orthogonal zing the single of the primary user and the secondary user. Simulation results showed that, with the cooperation of the secondary user, the primary user can communicates efficiently, the secondary user transmits availably as well. The system achieves the best performance by the power allocation scheme and relay selection strategy.
Keywords :
cognitive radio; cooperative communication; network coding; amplify forward; cognitive radio network; cooperative communication; inefficiency problem; physical-layer network coding; power allocation scheme; relay selection strategy; secondary user; Cognitive radio; Modulation; Network coding; Relays; Resource management; Signal to noise ratio; cognitive radio; cooperative communication; physical-layer network coding;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Instrumentation, Measurement, Computer, Communication and Control (IMCCC), 2012 Second International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4673-5034-1
Type :
conf
DOI :
10.1109/IMCCC.2012.285
Filename :
6429121
Link To Document :
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