Performance improvement by frequency-domain interleaving for OFDM/TDM using MMSE-FDE in a wireless channel

Haris Gacanin, Fumiyuki Adachi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The use of frequency-domain interleaving on a frame-byframe basis for orthogonal frequency division multiplexing (OFDM) combined with time division multiplexing (OFDM/TDM) is presented. In conventional OFDM, FDE is not designed to exploit the channel frequencyselectivity and consequently, the frequency diversity gain cannot be obtained. To further improve the bit error rate (BER) performance of conventional OFDM an interleaving technique may be applied, but FDE cannot be fully exploited. In this letter, the OFDM/TDM signal (i.e., several concatenated OFDM signals) frequency components are interleaved at the transmitter and then, minimum mean square error frequency-domain equalization (MMSE-FDE) is applied at the receiver to obtain a larger frequency diversity gain. It is shown that frequency-domain interleaving on a frame-by-frame basis for OFDM/TDM using MMSE-FDE achieves improved BER performance in comparison with conventional OFDM due to enhanced frequency diversity gain.

Original languageEnglish
Pages (from-to)1813-1817
Number of pages5
JournalIEICE Transactions on Communications
VolumeE92-B
Issue number5
DOIs
Publication statusPublished - 2009 May

Keywords

  • Channel frequency-selectivity
  • Frequency-domain interleaving
  • MMSE-FDE
  • OFDM/TDM

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Performance improvement by frequency-domain interleaving for OFDM/TDM using MMSE-FDE in a wireless channel'. Together they form a unique fingerprint.

Cite this