Super-Nyquist shaping and processing technologies for high-spectral- efficiency optical systems

Zhensheng Jia, Hung Chang Chien, Junwen Zhang, Ze Dong, Yi Cai, Jianjun Yu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

The implementations of super-Nyquist pulse generation, both in a digital field using a digital-to-analog converter (DAC) or an optical filter at transmitter side, are introduced. Three corresponding signal processing algorithms at receiver are presented and compared for high spectral-efficiency (SE) optical systems employing the spectral prefiltering. Those algorithms are designed for the mitigation towards inter-symbol-interference (ISI) and inter-channel-interference (ICI) impairments by the bandwidth constraint, including 1-tap constant modulus algorithm (CMA) and 3-tap maximum likelihood sequence estimation (MLSE), regular CMA and digital filter with 2-tap MLSE, and constant multi-modulus algorithm (CMMA) with 2-tap MLSE. The principles and prefiltering tolerance are given through numerical and experimental results.

Original languageEnglish
Title of host publicationNext-Generation Optical Communication
Subtitle of host publicationComponents, Sub-Systems, and Systems III
DOIs
Publication statusPublished - 2014
Externally publishedYes
EventNext-Generation Optical Communication: Components, Sub-Systems, and Systems III - San Francisco, CA, United States
Duration: 4 Feb 20146 Feb 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9009
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceNext-Generation Optical Communication: Components, Sub-Systems, and Systems III
Country/TerritoryUnited States
CitySan Francisco, CA
Period4/02/146/02/14

Keywords

  • CMA
  • DSP
  • MLSE
  • Nyquist
  • QPSK
  • coherent detection
  • prefiltering
  • spectral efficiency
  • spectral shaping

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