计算机与现代化 ›› 2013, Vol. 1 ›› Issue (5): 131-134.doi: 10.3969/j.issn.1006-2475.2013.05.031

• 网络与通信 • 上一篇    下一篇

OFDM系统的信道估计与检测方法研究

龚松1,刘莉2   

  1. 1.江西省信息中心,江西南昌330046;2.江西省邮电规划设计院有限公司,江西南昌330002
  • 收稿日期:2013-04-22 修回日期:1900-01-01 出版日期:2013-05-28 发布日期:2013-05-28

Research on Channel Estimation and Detection Method of OFDM System

GONG Song1, LIU Li2   

  1. 1. Jiangxi Provincial Information Centre, Nanchang 330046, China;2.Jiangxi Planning & Designing Institute of Posts & Telecommunications Co., Ltd., Nanchang 330002, China
  • Received:2013-04-22 Revised:1900-01-01 Online:2013-05-28 Published:2013-05-28

摘要: 为保证通信的可靠性与有效性,掌握正交频分复用(OFDM)系统的信道状态信息(CSI)是很必要的。本文在基于导频的OFDM信道估计的基础上,提出检测时变信道的新方法。验证结果表明,该方法通过寻找合适的评价信道变化的参量,可以有效衡量信道的变化状态。

关键词: 信道状态信息, 导频, 正交频分复用, 信道估计

Abstract: In order to ensure the validity and reliability of communication, it’s necessary to know the channel state information(CSI) of orthogonal frequency division multiplexing (OFDM) system. This paper proposes a method to dectect the state information for channels, based on the pilotsymbolaided estimation in OFDM systems. The experiment results show that the method can efficent evaluate the state of channels by finding out appropriate parameters of CSI.

Key words: CSI, pilot symbols, OFDM, channel estimation

中图分类号: