Distortion Mitigation in Multiband OFDM RoF Transmission Employing Blind Post Equalizer

Hyoung Joon Park, Sun Young Jung, Dong Woo Kwon, Seung Hyun Cho, Hwan Seok Chung, Jong Hyun Lee, Sang Kook Han

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We propose and experimentally demonstrate a blind adaptive equalizer for a multiband (MB) orthogonal frequency-division multiplexing (OFDM) radio-over-fiber (RoF) system. The proposed equalizer adaptively decreases nonlinear and linear distortion, which might lead to serious signal degradation in MB OFDM transmission, without the use of a training signal. Instead of a training signal, error vector magnitude (EVM) and the power difference between the signal and the third-order intermodulation distortion components were observed in the equalizer. Therefore, the performance enhancement of MB OFDM transmission was experimentally verified in terms of EVM from 5.52% to 2.75% by mitigation of distortion. Consequently, the dynamic range of radio frequency input power was improved when the proposed equalizer was employed in an MB OFDM RoF system without increasing system overhead.

Original languageEnglish
Pages (from-to)2708-2711
Number of pages4
JournalIEEE Photonics Technology Letters
Volume28
Issue number23
DOIs
Publication statusPublished - 2016 Dec 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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