上海大学学报(自然科学版)

• 通信与信息工程 • 上一篇    下一篇

一种用于OFDM系统的时域均衡器设计

王勇,陈惠民,金彦亮,顾琳   

  1. 上海大学 通信与信息工程学院,上海 200072
  • 收稿日期:2007-03-16 修回日期:1900-01-01 出版日期:2007-12-20 发布日期:2007-12-20
  • 通讯作者: 陈惠民

Design of a Time-Domain Equalizer for OFDM System

WANG Yong,CHEN Hui-min,JIN Yan-liang,GU Lin   

  1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China

  • Received:2007-03-16 Revised:1900-01-01 Online:2007-12-20 Published:2007-12-20
  • Contact: CHEN Hui-min

摘要:

设计了一种OFDM系统中的时域均衡器,采用前导序列作为时域均衡器的训练序列,系统不需要再额外使用训练序列,在一定程度上降低了系统的开销.计算机仿真结果表明,这种OFDM时域均衡器的性能优于线性均衡器和判决反馈均衡器.

关键词: 码间干扰, 时域均衡器, 线性抵消判决反馈均衡器, 正交频分复用

Abstract:

In this paper a time-domain equalizer (TEQ) in an OFDM system is designed. With preamble sequences as the training sequences of TEQ, it is no longer necessary to use additional training sequences in the system. Therefore overhead of the system is reduced. Simulation results show that the performance of the TEQ is better than linear equalizer (LE) and decision feedback equalizer.

Key words: intersymbol interference (ISI), LCDFE, time-domain equalizer (TEQ), orthogonal frequency derision multiplexing (OFDM)