Analysis of timing and frequency o-sets on OFDM systems for fractional sampling rate

Byungju Lim, Young-Chai Ko

Research output: Contribution to journalArticle

Abstract

Timing and frequency offsets are caused by imperfect synchronization at the receiver. These errors degrade the performance of OFDM systems by introducing inter-carrier-interference (ICI) and intersymbol- interference (ISI). In this paper, we derive signal-To-interference ratio (SIR) analytically with timing and frequency offsets for the case that the sampling rate of analog-To-digital converter (ADC) in OFDM receiver is an integer fraction of the signal bandwidth. We find the exact form of interference power as a function of the fractional sampling rate. Our derived analysis is confirmed by simulations and can be applied to see the exact performance of OFDM systems with fractional sampling rate.

Original languageEnglish
Pages (from-to)1946-1951
Number of pages6
JournalIEICE Transactions on Communications
VolumeE100B
Issue number10
DOIs
Publication statusPublished - 2017 Oct 1

Keywords

  • Fractional sampling
  • Frequency offset
  • OFDM systems
  • Synchronization
  • Timing offset

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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