北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2002, Vol. 25 ›› Issue (4): 84-88.

• 学术论文 • 上一篇    下一篇

一种多载波DS-CDMA系统的自适应调制算法

赵亚红1, 张忠培2, 吴伟陵1   

  1. 1.北京邮电大学信息工程学院, 北京 100876;
    2.清华大学电子工程系微波与数学通信国家重点实验室, 北京 100084
  • 收稿日期:2002-08-23 出版日期:2002-11-10
  • 作者简介: 赵亚红(1974—),女,博士研究生。
  • 基金资助:
     

An Adaptive Modulation Algorithm forMulticarrier DS-CDMA

ZHAO Ya-hong1, ZHANG Zhong-pei2, WU Wei-ling1   

  1. 1.Information Engineering Beijing University of Posts Telecommunications, Beijing 100876, China;
    2.Department of Electronic Engineering, Tsinghua University, Beijing, 100084, China)
  • Received:2002-08-23 Online:2002-11-10
  • Supported by:
     

摘要: 给出了一种次优的叠代调制比特分配算法,经过B次叠代可以完成B个比特在多载波DS-CDMA系统的载波组上的分配。仿真结果验证这种自适应调制的多载波DS-CDMA系统的性能较固定调制方式有很大提高。

关键词: 自适应调制, 多载波DS-CDMA, 比特分配, 最优化

Abstract: A suboptimal iterative bit allocation method is proposed, which can accomplish the adaptive modulation allocation of B bits on the multicarrier DS-CDMA carrier groups with only B times of iterative allocation process. Computer simulation has demonstrated that with the adaptive modulation, the performance of the multicarrier DS-CDMA system is greatly improved.

Key words: adaptive modulation, multicarrier DS-CDMA, bit allocation, optimiza-tion

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