A robust and secure time-domain ICI canceller for OFDM based ubiquitous systems in time-varying multipath channels

Jeong Wook Seo, Sang Soo Yeo, Kyoo Seok Park, Hang Bae Chang, Sung Eon Cho, Dong Ku Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A robust and secure time-domain cancellation is proposed for inter-carrier interference (ICI) reduction in OFDM systems for ubiquitous environments. To cope with the problem of the conventional time-domain canceller, which does not work in deep fades, simple repetition (de)coding and modulation order increasing techniques are exploited in our proposal. The approximated repetition decoding provides reliable symbols in the regeneration operation, and the increased modulation order maintains the spectral efficiency. Simulation results indicate that the proposed method using 16QAM significantly improves the BER performance compared with the conventional method using QPSK, while the spectral efficiency is maintained. Moreover, the proposed method using 64QAM concurrently improves both the BER performance and the spectral efficiency.

Original languageEnglish
Pages (from-to)29-43
Number of pages15
JournalJournal of Supercomputing
Volume45
Issue number1
DOIs
Publication statusPublished - 2008 Jul 1

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All Science Journal Classification (ASJC) codes

  • Software
  • Theoretical Computer Science
  • Information Systems
  • Hardware and Architecture

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