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多点协作最优功率分配与协作伙伴选择方案

DOI: 10.13190/jbupt.201006.29.lij, PP. 29-32

Keywords: 协作通信,最优功率分配,协作伙伴选择,误符号率,下界

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Abstract:

为了优化多节点放大转发协作通信系统的性能,对系统误符号率(SER)进行了深入研究,提出一种在高、低信噪比(SNR)情况下均紧于理论值的SER下界.在满足SER最小准则情况下,以下界为依据,提出适用于多节点协作通信系统最优功率分配与协作伙伴选择方案.在系统总功率受限情况下,基于该方案的SER性能明显优于基于平均功率分配方案的性能.与现有功率分配方案相比,在低SNR情况下,基于该方案的SER性能较紧于理论值.同时,该方案实现了协作伙伴选择功能.

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