采用Golay码降低MC-CDMA系统峰平功率比的性能分析

吉林大学学报(工学版) ›› 2003, Vol. ›› Issue (4): 68-72.

采用Golay码降低MC-CDMA系统峰平功率比的性能分析

栾英姿, 李建东, 李夏

西安电子科技大学, 综合业务网国家重点实验室, 西安电子科技大学, 信息科学研究所, 陕西, 西安, 710071

收稿日期:2003-01-09
基金资助:
863国家计划项目(2001AA123031);高等学校优秀青年教师教学科研奖励计划资助项目;教育部科学技术研究重点项目和高校骨干教师资助计划项目资助.

Peak-to-average power ratio analysis of MC-CDMA signal by using Golay code

LUAN Ying-zi, LI Jian-dong, LI Xia

National Key Lab. of ISN and Information Science Institute, Xidian University, Xi'an 710071, China

Received:2003-01-09

摘要/Abstract

摘要： 多载波调制的主要缺点是峰平功率比高。本文利用Golay码作为MC-CDMA系统的扩频码,降低了峰平功率。并与采用WH码的体制进行了比较,分析了两种方法的MC-CDMA信号峰平功率比的互补概率分布函数(CCDF)及它们在多径衰落信道下的系统性能。结果显示将Golay码用于MC-CDMA上行链路,平均峰平功率比降低了3dB,并且其系统性能与采用WH码时的性能相比没有任何损失。

关键词: 峰平功率比, 互补累积分布函数, Golay码, WH码, 多径信道

Abstract: A main disadvantage of multicarrier modulation is that it exhibits a high peak to average power ratio(PAPR). It is presented in this paper that with Golay code as spread code for MC-CDMA system,PARA can be reduced.The analysis and comparison of the PARA complementary cumulative distribution function(CCDF)of MC-CDMA signal by using Golay code and Walsh-Hadmard code respectively as spread code,and the performances of two systems in multipath fading channel are given.Simulation results show that there is 3dB reduction in the uplink PAPR of MC-CDMA system using Golay code and no performance lost compared to the system using WH code.

Key words: peak-to-average power ratio(PAPR), complementary cumulative distribution function(CCDF), Golay code, WH code, multipath channel

中图分类号:

TN919

栾英姿, 李建东, 李夏. 采用Golay码降低MC-CDMA系统峰平功率比的性能分析[J]. 吉林大学学报(工学版), 2003, (4): 68-72.

LUAN Ying-zi, LI Jian-dong, LI Xia. Peak-to-average power ratio analysis of MC-CDMA signal by using Golay code[J]. 吉林大学学报(工学版), 2003, (4): 68-72.

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