Capacity and power control in spread spectrum macro-diversity radio networks revisited

V. Rodriguez, R. Mathar, A. Schmeink
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引用次数: 6

Abstract

Macro-diversity - all base stations decode cooperatively each received signal - can mitigate shadow fading, and increase the capacity of a spread-spectrum communication network. Assuming that a terminal's transmission power contributes to its own interference, the literature determines whether a vector of quality-of-service targets is feasible through a simple formula, which is insensitive to the terminals' channel gains. Herein, through Banach' contraction-mapping principle - and without the self-interference approximation - a new low-complexity capacity formula is derived. Through its dependence on relative channel gains, the new formula adapts itself in a sensible manner to special conditions, such as when most terminals can only be heard by a subset of the receivers. Under such conditions, the original may significantly overestimate capacity.
扩频宏分集无线网络的容量和功率控制
宏分集——所有基站对每个接收到的信号进行协同解码——可以减轻阴影衰落,并增加扩频通信网络的容量。假设终端的发射功率对其自身的干扰有贡献,文献通过一个简单的公式确定服务质量目标向量是否可行,该公式对终端的信道增益不敏感。在此基础上,利用Banach收缩映射原理,在不考虑自干扰近似的情况下,导出了一个新的低复杂度容量公式。通过对相对信道增益的依赖,新公式以一种合理的方式适应特殊情况,例如当大多数终端只能被一部分接收器听到时。在这种情况下,原厂可能会大大高估容量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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