Power Allocation Strategy for Soft-Decision-and-Forward Cooperative Communication System 


Vol. 35,  No. 1, pp. 1-7, Jan.  2010


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  Abstract

In this paper, the performance of the soft-decision-and-forward (SDF) protocol in the cooperative communication network with one source, one relay, and one destination, where each node has two transmit and receive antennas, is analyzed in terms of the bit error rate (BER) obtained from the pairwise error probability (PEP). For the slow-varying Rayleigh fading channel, the optimal and suboptimal power allocation ratios are determined without feedback. The optimal power allocation can be obtained by minimizing the average PEP. For the tractability, an alternative strategy of maximizing the product SNR of direct and relay links, which we call the suboptimal power allocation, is considered. Through the numerical analysis, we show that the performance gap between the suboptimal and the optimal power allocation is negligible in the high SNR region.

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  Cite this article

[IEEE Style]

K. Song, J. Kim, J. No, H. Chung, "Power Allocation Strategy for Soft-Decision-and-Forward Cooperative Communication System," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 1, pp. 1-7, 2010. DOI: .

[ACM Style]

Kyoung-Young Song, Jaehong Kim, Jong-Seon No, and Habong Chung. 2010. Power Allocation Strategy for Soft-Decision-and-Forward Cooperative Communication System. The Journal of Korean Institute of Communications and Information Sciences, 35, 1, (2010), 1-7. DOI: .

[KICS Style]

Kyoung-Young Song, Jaehong Kim, Jong-Seon No, Habong Chung, "Power Allocation Strategy for Soft-Decision-and-Forward Cooperative Communication System," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 1, pp. 1-7, 1. 2010.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880