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分析切换合并系统LCR和AOD的新方法

Keywords: 电平交叉率, 平均中断时间, 双分支切换驻留合并, 切换检测合并, 后选择切换检测合并??

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Abstract:

平均电平交叉率(LCR)是研究快衰落信道的重要性能指标.该文提出了一种分析各分支相互独立切换合并系统LCR的方法.该方法基于全概率公式,并作为莱斯公式的扩展具有良好的通用性,适用于任意衰落信道下的双分支切换驻留合并(DB??SSC)、切换检测合并(SEC)和后选择切换检测合并(SECps)系统.应用该方法,得到了各分支独立情况下切换合并系统LCR的通用表达式,给出了各分支独立同分布(i.i.d.)情况下切换合并系统平均中断时间(AOD)的通用表达式.相对于传统的直接应用莱斯公式的方法,该文的方法不仅简单、具有更好的通用性,并且首次给出了SEC和SECps的LCR和AOD的闭合表达式.

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