%0 Journal Article
%T Ergodic capacity for MUD/SD cognitive radio system<br>基于MUD/SD的认知无线电系统遍历容量研究
%A XIE Xian-bin
%A GUO Wei
%A <br>谢先斌
%A 郭　伟
%J 计算机应用研究
%D 2012
%I 
%X 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 ratioSNR, 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.
%K cognitive radio
%K spectrum sharing
%K multiuser diversity
%K switch diversity
%K ergodic capacity<br>认知无线电
%K 频谱共享
%K 多用户分集
%K 选择分集
%K 遍历容量
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=8D8174D12B4331BFCB3F04C04CB38541&yid=99E9153A83D4CB11&vid=771469D9D58C34FF&iid=59906B3B2830C2C5&sid=85EA25ADE2AFD43B&eid=10AE12522D93AF03&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=0&reference_num=12