A flexible decision-aided maximum likelihood phase estimation method

Jian Chen, Ping Wang, Xiaodi You, Changyuan Yu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

In coherent optical phase-shift-keying (PSK) system, the conventional decision-aided maximum likelihood (DA-ML) phase estimator only considers constant phase noise over the entire observation interval. In this paper, we take into account the time-varying phase noise and propose a flexible DA-ML phase estimator for carrier phase estimation. The weighted coefficients are introduced to estimate carrier phase more accurately than the conventional scheme. The phase estimation error of this flexible DA-ML receiver is analyzed and compared with results from the conventional DA-ML receiver. The analytical bit error rate (BER) follows well with Monte Carlo (MC) simulations. Simulation results also show that by using the flexible DA-ML receiver in quadrature PSK (QPSK) system, bit signal-to-noise ratio (SNR) improvement over the conventional DA-ML receiver at BER of 10-3is 0.2dB and 1.2dB with block length of 20 and 50, respectively, when the laser linewidth is 2MHz.
Original languageEnglish
Title of host publication2015 International Conference on Optical Instruments and Technology
Subtitle of host publicationOptoelectronic Devices and Optical Signal Processing, OIT 2015
PublisherSPIE
Volume9619
ISBN (Electronic)9781628418002
DOIs
Publication statusPublished - 1 Jan 2015
Externally publishedYes
Event2015 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, OIT 2015 - Beijing, China
Duration: 17 May 201519 May 2015

Conference

Conference2015 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, OIT 2015
CountryChina
CityBeijing
Period17/05/1519/05/15

Keywords

  • Coherent optical communications
  • Decision-aided
  • Laser phase noise
  • Maximum likelihood
  • PSK
  • Weighted coefficients

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this