最大比宏分集下的CDMA系统反向容量分析

Effect of MRC-Based Macrodiversity on CDMA Reverse-Link Capacity

本文综合考虑快衰落 ,阴影衰落和路径衰减的影响 ,建立了最大比宏分集下CDMA系统反向信道分析模型并推导出了中断率 (outageprobability)表达式 .数值结果表明 ,采用宏分集后反向容量随参与宏分集基站数的增加而大大提高了 ,而且移动台的反向性能和其位置有关 。

We present a performance analysis based on an analytical model on CDMA reverse link with MRC (maximum ratio combining)-based macrodiversity and derive the exact outage probability expression. Both fast fading and log-normal shadowing fading are considered. The numerical results show that with MRC-based macrodiversity the reverse-link capacity can be increased greatly and the best performance can be achieved on the cell boundary.