DocumentCode :
1998915
Title :
Differential Cooperative Communications with Space-Time Network Coding
Author :
Gao, Zhenzhen ; Lai, Hung-Quoc ; Liu, K. J Ray
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Maryland, College Park, MD, USA
fYear :
2010
fDate :
6-10 Dec. 2010
Firstpage :
1
Lastpage :
5
Abstract :
In multinode cooperative communications, simultaneous transmissions from two or more nodes are challenging due to its asynchronous nature. In addition, channel estimation is a costly task due to the amount of training, especially when the number of cooperative users is large. Considering all these practical challenges in multinode cooperative communications, this paper propose a new transmission scheme, namely differential space-time network coding (DSTNC), to overcome the problems of imperfect synchronization and complicated channel estimation. Each user in the network linearly combines the correctly decoded symbols by a network coding vector, which is designed to achieve full diversity without introducing large time delay. The pairwise error probability (PEP) is analyzed and the design criteria of the DSTNC are derived based on the PEP. The proposed DSTNC scheme can be applied to any number of cooperative users. Simulation results are shown to verify the performance of the proposed transmission scheme.
Keywords :
channel estimation; cooperative communication; diversity reception; error statistics; network coding; space-time codes; synchronisation; channel estimation; cooperative users; decoded symbols; differential cooperative communications; differential space-time network coding; diversity; imperfect synchronization; multinode cooperative communications; pairwise error probability; Diversity reception; Manganese; Modulation; Network coding; Peer to peer computing; Signal to noise ratio; Time division multiple access;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2010), 2010 IEEE
Conference_Location :
Miami, FL
ISSN :
1930-529X
Print_ISBN :
978-1-4244-5636-9
Electronic_ISBN :
1930-529X
Type :
conf
DOI :
10.1109/GLOCOM.2010.5683994
Filename :
5683994
Link To Document :
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