多径衰落环境下具有RAKE接收的直接序列扩频系统的性能

Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) Pub Date : 1994-07-04 DOI:10.1109/ISSSTA.1994.379542

D. Goeckel, W. Stark

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引用次数: 2

摘要

确定了在镜面多径衰落环境下具有RAKE接收的相干直接序列扩频系统的误差概率。所使用的模型包含大量的路径，这些路径在信令间隔中被分成组。RAKE能够锁定直接路径(延迟0)和来自其他组的每个子集的一条路径。用特征函数法对误差概率进行了近似。探讨了系统的处理增益和RAKE接收支路数对误差概率的影响。并与用标准高斯近似得到的误差概率进行了比较。

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Performance of a direct-sequence spread-spectrum system with RAKE reception in a multipath fading environment

The probability of error is determined for a coherent direct-sequence spread-spectrum system with RAKE reception operating in a specular multipath fading environment. The model that is utilized contains a large number of paths divided into groups across the signalling interval. The RAKE is able to lock onto the direct path (delay 0) and one path from each of a subset of the other groups. Approximations are made to the probability of error using the characteristic function method. The effects of the processing gain of the system and the number of branches in the RAKE receiver on the probability of error are explored. Comparisons are made with the error probability obtained using the standard Gaussian approximation for the interference.<>

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Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94)

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