An Improved Two-Stage Carrier Phase Estimation Algorithm in Coherent Optical Communication

ZHAO Lun; YU Jian-guo; WANG Ren-fan; LUO Biao

doi:10.13756/j.gtxyj.2016.06.001

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An Improved Two-Stage Carrier Phase Estimation Algorithm in Coherent Optical Communication

- An Improved Two-Stage Carrier Phase Estimation Algorithm in Coherent Optical Communication
- Study on Optical communication Issue 6, Pages: 1-4(2016)
- 作者机构：
  
  1. 北京邮电大学电子工程学院
  2. 武汉光迅科技股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2016.06.001
  CLC： TN929.1
- Published：2016，
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[1]赵伦,余建国,王任凡,罗飚.相干光通信中的改进型二阶载波相位估计算法[J].光通信研究,2016(06):1-4.

ZHAO Lun, YU Jian-guo, WANG Ren-fan, et al. An Improved Two-Stage Carrier Phase Estimation Algorithm in Coherent Optical Communication. [J]. (6):1-4(2016)
[1]赵伦,余建国,王任凡,罗飚.相干光通信中的改进型二阶载波相位估计算法[J].光通信研究,2016(06):1-4. DOI： 10.13756/j.gtxyj.2016.06.001.

ZHAO Lun, YU Jian-guo, WANG Ren-fan, et al. An Improved Two-Stage Carrier Phase Estimation Algorithm in Coherent Optical Communication. [J]. (6):1-4(2016) DOI： 10.13756/j.gtxyj.2016.06.001.

摘要

针对现有的BPS（盲相位搜索）算法计算复杂度过高的问题

提出了一种基于改进型QPSK（正交相移键控）分区算法的二阶载波相位估计算法

该算法的第一阶采用传统基于部分星座点的P3算法进行粗估计

第二阶采用作者提出的改进型QPSK分区算法补偿剩余的相位噪声。仿真结果表明

该算法的性能与BPS算法相近

但计算复杂度较BPS算法降低了约1/13。

Abstract

Aiming at the problem of high computational complexity of existing Blind Phase Search（BPS）algorithm

the thesis proposes a two stage carrier phase estimation algorithm based on improved QPSK partition algorithm.The first stage of the algorithm is based on traditional P3 algorithm

which is used to realize rough estimation.The second stage of the algorithm is based on the proposed improved QSPK partition algorithm

which is used to compensate the residual phase noise.The simulation results show that the performance of this algorithm is similar to that of BPS algorithm.However

the computational complexity is about 13 times lower than that of the BPS algorithm.

关键词

相干光通信载波相位估计正交相移键控分区

Keywords

coherent optical communicationcarrier phase estimationQPSK partition

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