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Performance analysis of optimum combining in wireless communications with Rayleigh fading and cochannel interference

机译：具有瑞利衰落和同信道干扰的无线通信中最优组合的性能分析

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摘要

Optimum combining for space diversity reception is studied in digital cellular mobile radio communication systems with Rayleigh fading and multiple cochannel interferers. This paper considers binary phase-shift keying (BPSK) modulation in a flat Rayleigh-fading environment when the number of interferences L is no less than the number of antenna elements N(L/spl ges/N). The approach of this paper and its main contribution is to carry out the analysis in a multivariate framework. Using this approach and with the assumption of equal-power interferers, it is shown that the probability density function of the maximum signal-to-interference ratio (SIR) at the output of the optimum combiner has a Hotelling T/sup 2/ distribution. Closed form expressions using hypergeometric functions are derived for the outage probability and the average probability of bit error. Theoretical results are demonstrated by Monte Carlo simulations.
机译：在具有瑞利衰落和多个同信道干扰源的数字蜂窝移动无线电通信系统中，研究了空间分集接收的最佳组合。当干扰数L不小于天线元数N（L / splges / N）时，本文考虑了在平坦瑞利衰落环境中的二进制相移键控（BPSK）调制。本文的方法及其主要贡献是在多变量框架内进行分析。使用这种方法并假设有相等功率的干扰源，可以证明，最佳组合器输出端的最大信号干扰比（SIR）的概率密度函数具有霍特林T / sup 2 /分布。针对中断概率和误码率的平均概率，导出使用超几何函数的封闭式表达式。理论结果由蒙特卡洛模拟证明。

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