Design of sequence set with group-wise zero correlation window  

作　　者：WANG Yang-zhi XU Cheng-qian College of Information Science and Engineering,Yanshan University,Qinhuangdao 066004,China 

出　　处：《The Journal of China Universities of Posts and Telecommunications》2009年第2期39-41,共3页中国邮电高校学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(60272026,60872061);the PhD Programs Foundation of Ministry of Education of China(20060216010);the Scientific Research Foundation for the Returned Overseas Chinese Scholars,Ministry of Education of China

摘　　要：Zero correlation window （ZCW） or zero correlation zone （ZCZ） sequence can be used in quasi-synchronous code division multiple access （QS-CDMA） system to eliminate multiple access and multipath interferences. However, as the length of ZCW or ZCZ increases, fewer sequences are available. Recently, a new concept, sequence set with group-wise zero correlation window is introduced, which can increase the number of available sequences for a QS-CDMA system. In this article, a new method for generating sequence set with group-wise zero correlation window is presented. This method is based on a Hadamard matrix of size N×N and a pair of Hadamard matrices of size M×M. Compared with previous methods, the proposed sequence set has a group-wise zero correlation window for both periodic and aperiodic cross-correlation functions.Zero correlation window （ZCW） or zero correlation zone （ZCZ） sequence can be used in quasi-synchronous code division multiple access （QS-CDMA） system to eliminate multiple access and multipath interferences. However, as the length of ZCW or ZCZ increases, fewer sequences are available. Recently, a new concept, sequence set with group-wise zero correlation window is introduced, which can increase the number of available sequences for a QS-CDMA system. In this article, a new method for generating sequence set with group-wise zero correlation window is presented. This method is based on a Hadamard matrix of size N×N and a pair of Hadamard matrices of size M×M. Compared with previous methods, the proposed sequence set has a group-wise zero correlation window for both periodic and aperiodic cross-correlation functions.

关 键 词：ZCW group-wise zero correlation window multiuser detection Hadamard matrix 

分 类 号：TN929.533[电子电信—通信与信息系统]