Accurate simple closed-form approximations to the distributions and densities of a sum of independent Rayleigh random variables

被引：0

作者：

Hu, J ^{[1
]}

Beaulieu, NC ^{[1
]}

机构：

[1] Univ Alberta, iCORE Wireless Commun Lab, Edmonton, AB T6G 2V4, Canada

来源：

CONFERENCE RECORD OF THE THIRTY-EIGHTH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS, VOLS 1 AND 2 | 2004年

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D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The statistical distribution of a sum of Rayleigh random variables is often required when analyzing the performance of wireless communication systems. A closed-form expression does not exist for the sum distribution and consequently, it is approximated or calculated numerically. A widely used small argument approximation for the density is shown to be inaccurate for medium and large values of the argument Highly accurate, simple closed-form approximations to the distributions and densities of Rayleigh sum random variables are presented in this paper. These approximations are valid for a wide range of probability values and number of summands.

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页码：1092 / 1095

页数：4

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