放大转发协作通信中继位置对SER性能的影响

doi:10.3969/j.issn.0255-8297.2012.05.007

Journal of Applied Sciences ›› 2012, Vol. 30 ›› Issue (5): 479-486.doi: 10.3969/j.issn.0255-8297.2012.05.007

• Communication Engineering • Previous Articles Next Articles

Impact of Relay Location on SER for Amplify-and-Forward Cooperative Communications

LI Yun1;2, HUANG Qing1

1. Key Laboratory of Mobile Communication Technology, Chongqing University of Posts and Telecommunications,
Chongqing 400065, China
2. National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China

Received:2011-07-04 Revised:2011-11-24 Online:2012-09-24 Published:2012-09-25

Abstract

Abstract:

In this paper, we analyze the symbol error rate (SER) for end-to-end link in amplify-and-forward (AF) cooperative networks. An optimal relay position is made by setting the distance between nodes. A multihop relay selection algorithm based on channel state information (CSI) is proposed, which is the expansion of single-hop relay selection to ensure the lowest SER of the cooperative node. A multi-hop relay selection algorithm based on node position is then investigated according to the impact of node position on system performance. Simulation results indicate that the optimal multi-relay position is at the midpoint between the source and destination nodes, and the multi-hop method provides significant performance gain in terms of total energy over the exiting AF relay selection algorithms.

Key words: relay selection, symbol error rate (SER), relay location, channel state information (CSI), amplify-and-forward

CLC Number:

TN929.5

LI Yun1;2, HUANG Qing1. Impact of Relay Location on SER for Amplify-and-Forward Cooperative Communications[J]. Journal of Applied Sciences, 2012, 30(5): 479-486.

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Impact of Relay Location on SER for Amplify-and-Forward Cooperative Communications

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