DocumentCode :
2412587
Title :
Achieving Spectral Efficient Cooperative Diversity with Network Interference Cancellation
Author :
Chen, Wei ; Letaief, Khaled B. ; Cao, Zhigang
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
fYear :
2011
fDate :
5-9 June 2011
Firstpage :
1
Lastpage :
5
Abstract :
Cooperative diversity is an emerging and powerful solution that can significantly improve the diversity order and link reliability over the harsh wireless fading channels. Although there has been a lot of work on achieving full diversity by using advanced space-time coding or signal processing schemes, how to increase the spectral efficiency or multiplexing gain with half-duplex relays has not received much attention so far. In this paper, we will present a spectral efficient cooperative diversity method, which adopts our recently proposed Network Interference CancEllation (NICE) to thoroughly mitigate the inter-relay interference in successive relaying, where a source and a relay may send different messages simultaneously. We shall also investigate the optimal diversity multiplexing tradeoff of the proposed method, and show that its diversity gain is strictly greater than that of the two-timeslot relaying protocols for large multiplexing gains. Moreover, the decoding algorithm for the relays and destination has a similar complexity as that of the decision feedback equalizer.
Keywords :
channel coding; cooperative communication; decision feedback equalisers; diversity reception; fading channels; interference suppression; multiplexing; radio links; space-time codes; telecommunication network reliability; NICE; advanced space-time coding; decision feedback equalizer; diversity gain; half duplex relays; inter-relay interference mitigation; link reliability; multiplexing gain; network interference cancellation; optimal diversity multiplexing tradeoff; signal processing; spectral efficient cooperative diversity; wireless fading channel; Decoding; Diversity methods; Interference; Multiplexing; Protocols; Relays; Signal to noise ratio;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications (ICC), 2011 IEEE International Conference on
Conference_Location :
Kyoto
ISSN :
1550-3607
Print_ISBN :
978-1-61284-232-5
Electronic_ISBN :
1550-3607
Type :
conf
DOI :
10.1109/icc.2011.5962839
Filename :
5962839
Link To Document :
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