计算机应用研究2012，Vol.29Issue(12)：4671-4673,3.DOI:10.3969/j.issn.1001-3695.2012.12.069
基于MUD/SD的认知无线电系统遍历容量研究
Ergodic capacity for MUD/SD cognitive radio system
摘要
Abstract
This paper proposed a new multi-user diversity spectrum-sharing cognitive radio system model based on multiple antennas switch diversity receiver. Compared with traditional multi-user diversity spectrum-sharing system model, this model improved cognitive user system channel ergodic capacity because of valid multiple antennas switch diversity gain in cognitive receiver. Utilizing the derived cumulative distribution function and probability density function of the cognitive received signal-to-noise ratio( SNR) , it investigated the channel ergodic capacity of cognitive users system. For the case of unlimited cognitive user transmit power, it also derived the closed-form expression for the ergodic capacity.关键词
认知无线电/频谱共享/多用户分集/选择分集/遍历容量Key words
cognitive radio/ spectrum sharing/ multiuser diversity/ switch diversity/ ergodic capacity分类
信息技术与安全科学引用本文复制引用
谢先斌,郭伟..基于MUD/SD的认知无线电系统遍历容量研究[J].计算机应用研究,2012,29(12):4671-4673,3.基金项目
国家自然科学基金资助项目(61271168,61001085) （61271168,61001085）
国家"973"计划资助项目(2009CB320405) （2009CB320405）
