北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 1998, Vol. 21 ›› Issue (1): 41-46.

• 学术论文 • 上一篇    下一篇

星座成形在多载波调制信道上的性能分析*

刘丹谱,乐光新   

  1. 北京邮电大学电信工程学院, 北京 100876; 第一作者25岁, 女, 博士生
  • 收稿日期:1997-03-05 出版日期:1998-01-10
  • 基金资助:
    国家教委博士学科点专项科研基金资助项目

The Performance Analysis of Constellation Shaping on the#br# Multicarrier Modulation Channel

Liu Danpu, Yue Guangxin   

  1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876)
  • Received:1997-03-05 Online:1998-01-10

摘要: 在多载波调制信道两种星座成形方式的基础上, 分析了成形增益与系统比特和功率分配方案的关系.从理论上证明连续近似成立时, 子信道独立成形与沿着各子信道联合成形在性能上等效, 继而通过实验模拟得出连续近似不成立时, 后者的增益可以略高于前者.

关键词: 信道编码, 成形, 多载波调制

Abstract: On the basis of two constellation shaping forms on the multicarrier modulation channel, the relation between shaping gain and the bit and power allocation of the system has been analyzed. It has been proved theoretically that if continuous approximation exists, the performance of separate shaping on the subchannel and united shaping across the subchannel are the same; and then the conclusion that if continuous approximation doesn't hold, the gain of the latter can be slightly higher than the former's has been obtained by simulations results.

Key words: channel coding, shaping, multicarrier modulation

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