Group-blind multi-user detection under multi-path channel  

作　　者：WANG Dong-yu LIU Wen-kai YANG Jun YANG Da-cheng 

机构地区：[1]Department of Electronic Engineering, North China University of Technology, Beijing 100041, China [2]School of Computer Science and Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China [3]School of Communication and Information Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2010年第3期45-51,共7页中国邮电高校学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (60507007);Beijing Municipal Education Commission Science and Technology Development Program (KM200610009014);Key Basic Research Foundation of North China University of Technology for Young Teachers

摘　　要：This article proposes an improved generalized side-lobe canceller （GSC） receiver structure based on a new group constraint, which is suitable to eliminate multiple-access interference （MAI）, inter-symbol interference （ISI） in direct-sequence code-division multiple access （DS/CDMA） downlink multi-user system. The new group constraint is deduced to construct the group-blind adaptive multi-user detector. The analysis indicates that the improved GSC under the new constraint not only retains the property of suppressing ISI and canceling MAI, but also can extract useful information from the succeeding bit for the desired user. The simulations show that the improved GSC filter can cancel the MAI efficiently whether the wireless channel length is short or long,This article proposes an improved generalized side-lobe canceller （GSC） receiver structure based on a new group constraint, which is suitable to eliminate multiple-access interference （MAI）, inter-symbol interference （ISI） in direct-sequence code-division multiple access （DS/CDMA） downlink multi-user system. The new group constraint is deduced to construct the group-blind adaptive multi-user detector. The analysis indicates that the improved GSC under the new constraint not only retains the property of suppressing ISI and canceling MAI, but also can extract useful information from the succeeding bit for the desired user. The simulations show that the improved GSC filter can cancel the MAI efficiently whether the wireless channel length is short or long,

关 键 词：group-blind detection GSC CONSTRAINT ISI MAI 

分 类 号：TN929.5[电子电信—通信与信息系统] TP316[电子电信—信息与通信工程]