Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2002, Vol. 25 ›› Issue (4): 84-88.

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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:
     

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

CLC Number: