A novel algorithm for joint channel estimation and signal detection in OFDM systems

Li Xiaowen; Zhao Beiping; Wang Huahua; Tao Min; Dong Xiaopeng

doi:10.13756/j.gtxyj.2015.06.015

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A novel algorithm for joint channel estimation and signal detection in OFDM systems

- A novel algorithm for joint channel estimation and signal detection in OFDM systems
- Study on Optical communication Issue 6, Pages: 58-60(2015)
- 作者机构：
  
  重庆邮电大学重庆市移动通信技术重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2015.06.015
  CLC： TN929.53
- Published：2015，
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[1]李小文,赵北平,王华华,陶敏,董晓朋.OFDM系统中一种新的联合信道估计和信号检测算法[J].光通信研究,2015(06):58-60+64.

Li Xiaowen, Zhao Beiping, Wang Huahua, et al. A novel algorithm for joint channel estimation and signal detection in OFDM systems. [J]. (6):58-60(2015)
[1]李小文,赵北平,王华华,陶敏,董晓朋.OFDM系统中一种新的联合信道估计和信号检测算法[J].光通信研究,2015(06):58-60+64. DOI： 10.13756/j.gtxyj.2015.06.015.

Li Xiaowen, Zhao Beiping, Wang Huahua, et al. A novel algorithm for joint channel estimation and signal detection in OFDM systems. [J]. (6):58-60(2015) DOI： 10.13756/j.gtxyj.2015.06.015.

摘要

提出一种新的基于迭代的联合信道估计和信号检测算法

利用ZF（迫零）算法检测出的信号进行下一个OFDM（正交频分复用）符号的信道估计

充分利用了信道估计值和检测符号之间的互信息量

有效地消除了符号间干扰和载波间干扰

提高了信道估计和符号检测的精确度。仿真结果表明

在不同的信道条件下

该算法的性能比传统信号检测方法有明显的提升。

Abstract

In this paper

a novel algorithm for iterative joint channel estimation and signal detection is proposed.It makes the channel estimation of the next OFDM symbol by using the signals detected by using the ZF algorithm

then effectively eliminates the inter-symbol and inter-carrier interferences by making full use of the mutual information between the channel estimation value and the detection symbols

thus improving the precision of the channel estimation and symbol detection.The simulation results show that under different channel conditions

this algorithm performs remarkably better than the traditional signal detection methods.

关键词

正交频分复用迭代信道估计联合信号检测

Keywords

OFDMiterative channel estimationjoint signal detection

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