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Distributed Space-Time-Frequency Cooperative Transmission Scheme for Bidirectional Multi-Relay Communication Networks

Lei Xu, Ying Ni, Kai Zhao, Hong-wei Zhang, and Xiao-hui Li
Key Lab of Intelligent Computing and Signal Processing of Ministry of Education, Anhui University, Hefei 230601, China
Abstract —Spectral efficiency and transmission reliability are among the main design considerations of modern wireless communication systems. In order to solve the problems of high decoding complexity, low spectrum utilization in bidirectional multi-relay cooperative communication system, combining the advantages of Random Cyclic Delay Diversity (RCDD) technology and Adaptive Forwarding Factor (AFF), a distributed space-time-frequency cooperative transmission scheme is proposed in this paper, which has the advantages of low decoding complexity and high spectrum utilization. Compared with the scheme only using Cyclic Delay Diversity (CDD) technology, this scheme can further excavate the diversity gain of the system and improve the performance of Bit Error Ratio (BER) and channel capacity.
 
Index Terms
—Distributed, adaptive forwarding factor, randomized cyclic delay diversity

Cite: Lei Xu, Ying Ni, Kai Zhao, Hong-wei Zhang, and Xiao-hui Li, “Distributed Space-Time-Frequency Cooperative Transmission Scheme for Bidirectional Multi-Relay Communication Networks," Journal of Communications, vol. 11, no. 10, pp. 896-902, 2016. Doi: 10.12720/jcm.11.10.896-902
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