Communications and Network

Volume 2, Issue 2 (May 2010)

ISSN Print: 1949-2421   ISSN Online: 1947-3826

Google-based Impact Factor: 3.28  Citations  

Maximum Ratio Combining Precoding for Multi-Antenna Relay Systems

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DOI: 10.4236/cn.2010.22016    5,766 Downloads   10,021 Views   Citations

ABSTRACT

This paper addresses the design of practical communication strategies for multi-antenna amplify-and-forward and decode-and-forward relay systems. We show that simple linear techniques at the source and destination in conjunction with maximum ratio combining can provide an optimal transmission strategy in terms of received SNR without imposing a huge computational load over the relay node(s). Besides, the structures of precoding matrices are very similar at the source and relay nodes, which reduces the complexity as all nodes can play the role of source and relay nodes without changing their transmission structure. Numerical results show that the proposed transmission and reception techniques can improve the received SNR, and hence enhance the ergodic capacity.

Cite this paper

H. Bahrami and T. Le-Ngoc, "Maximum Ratio Combining Precoding for Multi-Antenna Relay Systems," Communications and Network, Vol. 2 No. 2, 2010, pp. 97-103. doi: 10.4236/cn.2010.22016.

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