Paper Info
Title
Bandwidth-efficient Cooperative Diversity with Rotated Constellations and Its Performance Analysis.
Abstract
Cooperative diversity is a technique with which a virtual multiple antenna array is established among the single antenna users of the wireless network to realize space diversity. Signal space diversity (SSD) is a bandwidth-efficient diversity technique, which uses constellation rotation and interleaving techniques to achieve diversity gain. A new cooperative diversity scheme with rotated constellations (RCCD) is proposed in this paper. In this scheme, data are modulated by using a rotated constellation, and the source and the relays transmit different components of the modulated symbols. Since any one of the components contains full information of the symbols, the destination can obtain multiple signals conveying the same information from different users. In this way, space diversity is achieved. The RCCD scheme inherits the advantage of SSD - being bandwidth-efficient but without the delay problem of SSD brought by interleaving. The symbol error rate of the RCCD scheme is analyzed and simulated. The analysis and simulation results show that the RCCD scheme can achieve full diversity order of two when the inter-user channel is good enough, and, with the same bandwidth efficiency, has a better performance than amplify-and-forward and detect-and-forward methods.
Year
DOI
Venue
2010
10.3837/tiis.2010.12.001
KSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS
Keywords
Field
DocType
Cooperative diversity,signal space diversity,rotated constellation,bandwidth efficiency
Bandwidth efficient,Computer science,Cooperative diversity,Computer network,Constellation,Distributed computing
Journal
Volume
Issue
ISSN
4
6
1976-7277
Citations 
PageRank 
References 
1
0.37
0
Authors
3
Name
Order
Citations
PageRank
Weijia Lei1193.26
Xianzhong Xie29420.13
X. Li3498.78