摘要
蜂窝间干扰分析是CDMA无线通信网络中研究的一个重要方面,但干扰分析的传统方法存在3个主要缺陷,不能准确地反映蜂窝系统的实际情况。该文提出了一种新的计算蜂窝间干扰的分析方法,该方法克服了传统方法中存在的3个不足之处。用该方法对蜂窝间干扰进行了定量计算,得到了干扰均值和方差的解析表达式。最后通过数值计算,对不同环境下的干扰进行了分析。结果表明,随着蜂窝间距离的增加,干扰值下降的速率不断减少。
It is a very important domain to analyze the inter-cell interference in multimedia CDMA networks. However, traditional methods have three main limitations and can hardly accurately reflect the real status of cellular system. A new method is proposed to overcome these limitations. The interference is quantitatively analyzed and the close-form expressions of interference expectation and variance are acquired. Through numeric computation, the interference is analyzed in different conditions. Results show that with the distance between two base stations increased, the decline velocity of interference is decreased.
出处
《电子与信息学报》
EI
CSCD
北大核心
2008年第5期1159-1162,共4页
Journal of Electronics & Information Technology
基金
江苏省基础研究计划基金(BK2004149)
江苏省六大人才高峰基金
江苏省青蓝工程基金(2004省05)资助课题
关键词
CDMA网络
干扰
均值
方差
CDMA network
Interference
Expectation
Variance
