%0 Journal Article
%T Maximum-Likelihood Multiple Symbol Differential Detection for Unitary Space-Time Modulation in Continuous Fading<br>连续衰落信道下适用于酉空时调制的最大似然多符号差分检测算法
%A Li Ying Wang Xin Wei Ji-bo
%A <br>李颖
%A 王欣
%A 魏急波
%J 电子与信息学报
%D 2008
%I 
%X Recently, a Multiple Symbol Differential Sphere Decoding (MSDSD) algorithm for unitary space-time modulation over quasi-static channel is proved to achieve the performance of Maximum-Likelihood (ML) detection with relatively low complexity. However, an error floor occurs if the algorithm is applied to rapid-fading channels. Based on the assumption of continuous fading, a Multiple Symbol Differential Automatic Sphere Decoding (MSDASD) is developed by incorporating a recursive form of an ML metric in the automatic sphere decoding algorithm. The proposed algorithm is suitable for arbitrary unitary constellations and eliminates the error floor caused by MSDSD over fast fading channels. Compared with decision-feedback detection under the same assumption, MSDASD achieves performance of ML detection with much lower complexity at moderate to high signal-to-noise ratios.
%K Differential unitary space-time modulation
%K Multiple symbol differential detection
%K Maximum- likelihood detection
%K Sphere decoding<br>差分酉空时调制
%K 多符号差分检测
%K 最大似然检测
%K 球形译码
%K 连续
%K 快衰落信道
%K 酉空时调制
%K 最大似然
%K 符号
%K 差分
%K 检测算法
%K Fading
%K Continuous
%K Modulation
%K Differential
%K Detection
%K Symbol
%K 判决反馈
%K 情况
%K 平均复杂度
%K 检测性能
%K 酉空时星座
%K 译码算法
%K 自动
%K 递推形式
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=0E74D643812E0E42DC07405D45B6C4CF&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=E158A972A605785F&sid=85C7135C065B9251&eid=BCCCE1B88B87184D&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=17