Blind post processed nonlinearity mitigation in multiband OFDM radio over fiber optical transmission

Hyoung Joon Park, Sun Young Jung, Sang Kook Han

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose a blind adaptive post-processing method to reduce nonlinear distortion in multiband radio over fiber (RoF) transmission. Mitigating nonlinear distortion has been a critical challenge to enhance signal quality in RoF system due to analog optical transmission. To keep up with explosive increase in number of mobiles and their data capacity demands, remote antenna unit (RAU) has to be widely and densely distributed with RoF system. Consequently, RAU should be simple and compensation should be fully processed in central office (CO). In optical uplink transmission of RoF system, post-processing of distortion mitigation will be effective. In this paper, we propose post compensation structure constructed by means of Hammerstein equalizer without inserting preamble. Specifically, Hammerstein equalizer, which is separated into linear and nonlinear parts, was used to compensate both linear and nonlinear distortion of RoF system. The filter coefficients were updated adaptively by using LMS algorithm to adjust variable channel environments. In our experiment, multiband OFDM signal, which is LTE standard according to 3GPP, was optically transmitted through RoF channel. Experimental demonstration for the improvement of EVM performance with proposed post-processing was verified.

Original languageEnglish
Title of host publicationBroadband Access Communication Technologies X
EditorsKatsutoshi Tsukamoto, Benjamin B. Dingel
PublisherSPIE
ISBN (Electronic)9781510600072
DOIs
Publication statusPublished - 2016 Jan 1
EventBroadband Access Communication Technologies X - San Francisco, United States
Duration: 2016 Feb 162016 Feb 17

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9772
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherBroadband Access Communication Technologies X
CountryUnited States
CitySan Francisco
Period16/2/1616/2/17

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All Science Journal Classification (ASJC) codes

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

Cite this

Park, H. J., Jung, S. Y., & Han, S. K. (2016). Blind post processed nonlinearity mitigation in multiband OFDM radio over fiber optical transmission. In K. Tsukamoto, & B. B. Dingel (Eds.), Broadband Access Communication Technologies X [97720L] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9772). SPIE. https://doi.org/10.1117/12.2210747