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Nakagami-m衰落信道下机会中继协作系统的功率分配算法

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摘要 为提高协作中继通信系统的性能,文章提出了以最小化系统误码率为目标的功率分配算法。首先建立了中继系统模型。然后,在最优功率分配算法的基础上提出了一种次优功率分配算法,该算法可通过一次计算得到功率分配因子,且只与信道平均增益相关。因此,各节点不需要实时地更新信道状态信息,降低了算法实现的复杂度。仿真结果表明,文章提出的次优功率分配算法和最优功率分配算法及理论值非常相近,能提高系统的误码率性能。
作者 汤艳丽
出处 《科技创新与应用》 2013年第11期38-39,共2页 Technology Innovation and Application
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