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首页> 外文期刊>IEEE Transactions on Vehicular Technology >A Gaussian Symbol-Level Model for CDMA Forward Link Intracell Interference
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A Gaussian Symbol-Level Model for CDMA Forward Link Intracell Interference

机译:CDMA前向链路小区内干扰的高斯符号级模型

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摘要

This paper presents a Gaussian approximation for intracell interference on the forward link of a code division multiple access system with fast power control. A probability density function (PDF) is derived for the transmit power variations of each user due to power control adjustments. The PDF is then used to determine the variance of a Gaussian random variable that approximates intracell interference. Simulation demonstrates that this approximation is very accurate even for small spreading factors and low traffic loading levels. The accuracy of the approximation is evaluated for convolutional and turbo coding. The effect of finite power control step sizes and update rates is also investigated.
机译:本文提出了一种具有快速功率控制的码分多址系统前向链路上小区内干扰的高斯近似方法。归因于功率控制调整的每个用户的发射功率变化的概率密度函数(PDF)。然后将PDF用于确定近似于小区内干扰的高斯随机变量的方差。仿真表明,即使对于较小的扩展因子和较低的流量负载水平,该近似值也非常准确。对于卷积和turbo编码,评估近似的准确性。还研究了有限功率控制步长和更新速率的影响。

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