北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2001, Vol. 24 ›› Issue (1): 84-87.

• • 上一篇    下一篇

一种改进的多天线OFDM系统及其性能分析

佟学俭, 纪红, 乐光新   

  1. 北京邮电大学电信工程学院, 北京 100876
  • 收稿日期:2000-07-11 出版日期:2001-01-10
  • 作者简介:佟学俭(1973—),男,山东济南人,博士生.
  • 基金资助:
    国家自然科学基金资助项目(69872008)

Antenna Diversity for an Improved OFDM System

TONG Xue-jian, JI Hong, YUE Guang-xin   

  1. Telecommunication Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2000-07-11 Online:2001-01-10

摘要: 提出一种改进的OFDM系统,把N点FFT分为n组,同时把空间分集应用于该系统中,利用正交设计理论安排发送数据符号,在接收端采用适当的合并方式最大限度地获得信号功率.通过分析与仿真计算可以看到,多天线分集可以显著地改善OFDM系统的性能.

关键词: 频分复用, 分集技术, 快速傅里叶变换

Abstract: An improved OFDM system is proposed: N-points-FFT is divided into n groups. The symbol is arranged according to orthogonal design theory at transmitter, and the multi-antenna can achieve the maximum signal power by appropriate combination method at receiver. The performance is improved greatly by analysis and numerical simulation.

Key words: FDM, diversity, FFT

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