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广义分布式天线系统上行分集性能分析

DOI: 10.3969/j.issn.1006-7043.2009.12.016

Keywords: 阴影衰落 广义分布式天线系统 上行链路 接收分集 shadow fading generalized distributed antenna systems (GDAS) uplink receive diversity

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Abstract:

针对广泛存在于无线通信环境中的阴影效应对系统性能影响非常大的问题,采用与传统的微分集技术相比,能够有效地对抗这种阴影衰落的分布式天线技术来解决这个问题.为了获得该条件下系统的理论性能,分析了采用最大比合并和相干等增益合并分集的广义分布式天线系统.借助lognormal近似法,给出了其中断概率和误码率性能的高精度解析结果.分析表明,在存在阴影衰落的情况下,这种广义分布式天线系统能够同时获得较大的微/宏分集增益,非常适合未来的无线小区环境.

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