路径分集(RAKE)对CDMA蜂窝系统链路可靠性的影响——一种现实的系统容量评估方法

Proceedings of PIMRC '96 - 7th International Symposium on Personal, Indoor, and Mobile Communications Pub Date : 1996-10-15 DOI:10.1109/PIMRC.1996.568459

J. S. Lee, L. Miller

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引用次数: 1

摘要

考虑到多用户、多径接收、信号和多径衰落以及Rake多径分集处理等因素，将CDMA蜂窝系统反向链路的可靠性表述为链路信噪比高于所需阈值的概率。可靠性计算表明了通过RAKE处理获得的增益，以及在存在多路径时进行这种处理的必要性。研究表明，当考虑到多径干扰和链路可靠性要求时，CDMA用户数量可能比使用中位数信噪比值预测的数量要小得多。

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The effect of path diversity (RAKE) on link reliability in CDMA cellular systems-a realistic assessment of system capacity

The reliability of a CDMA cellular system reverse link is formulated as the probability that the link SNR is above the required threshold, accounting for multiple users, multipath receptions, signal and multipath fading, and Rake multipath diversity processing. Calculations of reliability show the gains obtained through RAKE processing, and the necessity of this processing when multipaths exist. It is shown that when multipath interference and link reliability requirements are accounted for, the number of CDMA users can be much smaller than that predicted using median SNR values.

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Proceedings of PIMRC '96 - 7th International Symposium on Personal, Indoor, and Mobile Communications

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