LINEAR DIVERSITY COMBINING TECHNIQUES
LINEAR DIVERSITY COMBINING TECHNIQUES
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DOI：
10.1109/jrproc.1959.287136
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发表时间：
1959-01-01
影响因子：
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通讯作者：
BRENNAN, DG
中科院分区：
文献类型：
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作者：
BRENNAN, DG
本文对实际使用中的三种分集合并系统进行了分析。它们是：选择分集、最大比分集和等增益分集系统。提供了三个系统相对性能（在现实条件下）的定量测量。考虑了各种偏离理想条件的影响，例如非瑞利衰落和部分相干信号或噪声电压。还包括一些关于预检测和后检测组合的相对优点以及确定和使用长期分布的问题的讨论。主要结果以图表形式给出，对于系统设计很有用。可以看出，最简单的组合器，即等增益系统，通常会产生基本上相当于从任何准线性系统可获得的最大性能的性能。结果的主要应用是分集通信系统，讨论是在该背景下进行的，但许多结果也适用于某些雷达和导航系统。
This paper provides analyses of three types of diversity combining systems in practical use. These are: selection diversity, maximal-ratio diversity, and equal-gain diversity systems. Quantitative measures of the relative performance (under realistic conditions) of the three systems are provided. The effects of various departures from ideal conditions, such as non-Rayleigh fading and partially coherent signal or noise voltages, are considered. Some discussion is also included of the relative merits of predetection and postdetection combining and of the problems in determining and using long-term distributions. The principal results are given in graphs and tables, useful in system design. It is seen that the simplest possible combiner, the equal-gain system, will generally yield performance essentially equivalent to the maximum obtainable from any quasi-linear system. The principal application of the results is to diversity communication systems and the discussion is set in that context, but many of the results are also applicable to certain radar and navigation systems.