5th International ICST Conference on Wireless Internet

Research Article

Location optimization for decode-and-forward opportunistic cooperative networks

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  • @INPROCEEDINGS{10.4108/ICST.WICON2010.8546,
        author={Changqing Yang and Wenbo Wang and Shuang Zhao and Mugen Peng},
        title={Location optimization for decode-and-forward opportunistic cooperative networks},
        proceedings={5th International ICST Conference on Wireless Internet},
        publisher={IEEE},
        proceedings_a={WICON},
        year={2010},
        month={4},
        keywords={Closed-form solution Decoding Digital relays Diversity reception Fading Power system modeling Power system relaying Protocols Rayleigh channels Signal processing},
        doi={10.4108/ICST.WICON2010.8546}
    }
    
  • Changqing Yang
    Wenbo Wang
    Shuang Zhao
    Mugen Peng
    Year: 2010
    Location optimization for decode-and-forward opportunistic cooperative networks
    WICON
    IEEE
    DOI: 10.4108/ICST.WICON2010.8546
Changqing Yang1, Wenbo Wang1, Shuang Zhao1, Mugen Peng1
  • 1: Wireless Signal Processing and Network Lab, Key Lab of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing, 100876 P. R. China

Abstract

In this paper, we investigate the location optimization for decode-and-forward (DF) opportunistic cooperative networks, in which the impact of the availability of the direct link between the source and the destination has been studied. Under Rayleigh fading channels, the closed-form solution for the optimal location is derived. It is interesting to find that the optimal relay location is related to the power configuration of nodes and the pathloss exponent. When the direct link exists, the optimal location is partly dependent on the total number of the relays. Numerical results show that the approximation analysis matches the theory values very well, and with location optimization, the minimal outage probability can be obtained.