QUASI-SYNCHRONOUS MULTICARRIER DS-CDMA USING Z-COMPLEMENTARY SEQUENCES  

作　　者：Tu Yifeng Fan Pingzhi Yuan Weina Hao Li 

机构地区：[1]Provincial Key Lab of Information Coding ＆ Transmission, Institute of Mobile Communications, Southwest Jiaotong University, Chengdu 510031, China [2]School of Information Science ＆ Engineering, East China University of Science ＆ Technology, Shanghai 200092, China

出　　处：《Journal of Electronics(China)》2009年第4期487-491,共5页电子科学学刊（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No.60772087, No.90604035);111 Project (No.111- 2-14)

摘　　要：In this paper, a multicarrier DS-CDMA system which employs Z-Complementary Se- quences (ZCS) as spreading code is investigated. The new system can not only eliminate multipath interference and Multiple Access Interference (MAI), but also support flexible number of users com- pared with system using Orthogonal Complementary (OC) codes. Multicarrier DS-CDMA using OC codes can be regarded as a special case of our proposed system. Zero Correlation Zone (ZCZ) of ZCS can be flexibly adjusted to meet the requirements on the user number and maximum multipath and in- ter-user delay, in this way, more users can be supported without losing interference-free property. The effectiveness of the proposed system is validated through theoretical analysis and simulation results.In this paper, a multicarrier DS-CDMA system which employs Z-Complementary Sequences （ZCS） as spreading code is investigated. The new system can not only eliminate multipath interference and Multiple Access Interference （MAI）, but also support flexible number of users compared with system using Orthogonal Complementary （OC） codes. Multicarrier DS-CDMA using OC codes can be regarded as a special case of our proposed system. Zero Correlation Zone （ZCZ） of ZCS can be flexibly adjusted to meet the requirements on the user number and maximum multipath and in- ter-user delay, in this way, more users can be supported without losing interference-free property. The effectiveness of the proposed system is validated through theoretical analysis and simulation results.

关 键 词：Orthogonal Complementary （OC） codes Multicarrier DS-CDMA Z-Complemen-tary Sequences （ZCS） Zero Correlation Zone （ZCZ） 

分 类 号：TN929.533[电子电信—通信与信息系统] TP316[电子电信—信息与通信工程]