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): 11-15.

• 学术论文 • 上一篇    下一篇

OFDM系统中动态比特分配算法的性能分析

纪 红, 郝建军, 佟学俭, 乐光新   

  1. 北京邮电大学电信工程学院, 北京 100876
  • 收稿日期:2001-09-10 出版日期:2002-11-10
  • 作者简介: 纪红(1966—),女,北京邮电大学副教授,在职博士生。
  • 基金资助:
    国家自然科学基金资助项目(60172052,90104018);国家“863计划”资助项目(2001AA123016)

Analysis of Dynamic Bit Allocation Algorithm in OFDM System

JI Hong, HAO Jian-jun, TONG Xue-jian, YUE Guang-xin   

  1. Telecommunication Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2001-09-10 Online:2002-11-10
  • Supported by:
     

摘要: 提出传输速率和传输性能一定条件下的动态比特分配算法系统模型,研究其在OFDM系统中的应用。分析和仿真计算结果表明,与传统的等比特分配方法相比,该动态比特分配算法可以显著地改善系统性能。

关键词: 正交频分复用, 动态比特分配, 自适应调制

Abstract: A new DAB algorithm model with constraints of given transmission rate and QoS requirement is proposed in the paper, as well as be applied to OFDM system. Compared with the conventional equal bit allocation method, the DBA method can improvethe system performance greatly by analysis and numerical simulation.

Key words: OFDM, Dynamic Bit Allocation, Adaptive Modulation

中图分类号: