Pilot-aided channel estimation for OFDM systems in atmospheric laser communications

Zhu Yaolin1; Meng Chao2; Ke Xizheng1

doi:10.13756/j.gtxyj.2012.06.012

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Pilot-aided channel estimation for OFDM systems in atmospheric laser communications

- Pilot-aided channel estimation for OFDM systems in atmospheric laser communications
- Study on Optical communication Issue 6, Pages: 28-30(2012)
- 作者机构：
  
  1. 西安理工大学自动化与信息工程学院
  2. 西安工程大学电子信息学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2012.06.012
  CLC： TN929.1
- Published：2012，
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[1]朱耀麟,孟超,柯熙政.大气激光通信下的OFDM导频信道估计方法[J].光通信研究,2012(06):28-30.

Zhu Yaolin1, Meng Chao2, Ke Xizheng1. Pilot-aided channel estimation for OFDM systems in atmospheric laser communications. [J]. (6):28-30(2012)
[1]朱耀麟,孟超,柯熙政.大气激光通信下的OFDM导频信道估计方法[J].光通信研究,2012(06):28-30. DOI： 10.13756/j.gtxyj.2012.06.012.

Zhu Yaolin1, Meng Chao2, Ke Xizheng1. Pilot-aided channel estimation for OFDM systems in atmospheric laser communications. [J]. (6):28-30(2012) DOI： 10.13756/j.gtxyj.2012.06.012.

摘要

针对大气激光通信下的OFDM（正交频分复用）系统

对几种基于导频的信道估计方法进行了比较分析

并给出了仿真结果。仿真结果表明

SVD-LMMSE（基于奇异值分解的线性最小均方误差）算法在提高信道估计精度的同时

可以降低系统计算的复杂度;增大CP（循环前缀）可以非常有效地提高系统性能。

Abstract

In this paper

several pilot-aided channel estimation methods are compared and analyzed for Orthogonal Frequency Division Multiplexing（OFDM） systems in atmospheric laser communications.The simulation results show that while improving the channel estimation accuracy

the Singular Value Decomposition-Linear Minimum Mean Square Error（SVD-LMMSE） algorithm reduces the complexity of the system computations and the increase of the Cyclic Prefix（CP） effectively improves the system performances.

关键词

大气激光通信信道估计正交频分复用

Keywords

atmospheric laser communicationchannel estimationOFDM

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