Optical Phase-Shift Keying Equalization Algorithm Improvement

ZHU Yao-lin; GUAN Hao; KE Xi-zheng

doi:10.13756/j.gtxyj.2016.04.005

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Optical Phase-Shift Keying Equalization Algorithm Improvement

- Optical Phase-Shift Keying Equalization Algorithm Improvement
- Study on Optical communication Issue 4, Pages: 16-18(2016)
- 作者机构：
  
  1. 西安工程大学电子信息学院
  2. 西安理工大学自动化与信息工程学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2016.04.005
  CLC： TN929.1
- Published：2016，
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[1]朱耀麟,关浩,柯熙政.光相移键控均衡算法改进[J].光通信研究,2016(04):16-18.

ZHU Yao-lin, GUAN Hao, KE Xi-zheng. Optical Phase-Shift Keying Equalization Algorithm Improvement. [J]. (4):16-18(2016)
[1]朱耀麟,关浩,柯熙政.光相移键控均衡算法改进[J].光通信研究,2016(04):16-18. DOI： 10.13756/j.gtxyj.2016.04.005.

ZHU Yao-lin, GUAN Hao, KE Xi-zheng. Optical Phase-Shift Keying Equalization Algorithm Improvement. [J]. (4):16-18(2016) DOI： 10.13756/j.gtxyj.2016.04.005.

摘要

针对光信号传输过程中产生的相位畸变及高误码率

提出了一种改进算法

通过设置误差容限

实现了LMS（最小均方）算法和CMA（恒模算法）在不同阈值条件下的切换应用。改进算法充分利用CMA收敛速度快及LMS算法稳态特性好的优点

使均衡后星座图中的星座点收敛速度快、相位点集中

信噪比高且稳定

其信号误码率为原来的五分之一。

Abstract

In this paper

we propose an improved algorithm to solve the phase distortion and high bit error ratio problems during the signal transmission.Through setting the error threshold value

the algorithm can work between the CMA and LMS modes.The improved algorithm fully utilizes the faster convergence speed in CMA algorithm and LMS algorithm with good stability.The simulation results show that the proposed algorithm can increase the convergence speed of constellation points

concentrate the phase point

realize high and stable signal noise ratio high

and reduce the signal error rate to be 1/5of the previous result.

关键词

相移键控自适应滤波器最小均方算法恒模算法相位均衡

Keywords

PSKadaptive filterLMS algorithmCMAphase equalization

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Related Institution

College of Computer Science&Technology,Nanjing TECH University

College of Electronics and Information,Xi’an Polytechnic University

Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China,Chongqing University

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State Key Laboratory of ASIC & System,Department of Communication Science and Engineering, Fudan University

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