MC-CDMA上下行链路扩频序列设计及仿真研究  

Design and simulation of spreading sequences in uplink and downlink MC-CDMA

作　　者：陈洪[1] 张琛[1] 张尔扬[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《成都信息工程学院学报》2007年第2期153-156,共4页Journal of Chengdu University of Information Technology

摘　　要：分析了MC-CDMA上下行链路发送端的基带系统模型,给出了发送信号峰均功率比和用户扩频序列非周期自相关函数之间的关系,对上下行链路采用不同类型扩频序列集的PAPR性能进行了仿真。仿真结果表明在MC-CDMA的上下行链路中采用正交Golay序列均具有优异的PAPR性能,和常用基于walsh序列的MC-CDMA系统相比具有更强的实用意义。The system models of the uplink and downlink MC-CDMA are analyzed and the relation between the PAPR and the non-periodic correlation of the spreading sequences is presented. The PAPR performance based on different types of spreading sequences in the uplink and downlink of the MC-CDMA are simulated. The results show that the MC-CDMA system based on the orthogonal Golay sequences has the ideal PAPR performance and strong superiority compared with the Walsh sequences based system.

关 键 词：MC-CDMA 峰均功率比 walsh序列 OGold序列 OGolay序列 

分 类 号：TN914.4[电子电信—通信与信息系统]