Mapping optimization for space-time block coded OFDM systems with iterative decoding

Jinsoo Choi, Wookbong Lee, Inkyu Lee

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

An iterative detection scheme enhances the performance of bit-interleaved coded modulation (BICM) by exploiting frequency diversity gains. Additionally, space-time block coding (STBC) scheme can significantly improve the system performance in fading channels by proper coordinating of the signaling over multiple antennas. In this paper, STBC technique based on BICM is applied to orthogonal frequency division multiplexing (OFDM) system over frequency selective channels. When iterative decoding (ID) is applied, the overall performance of the STBC BICM-ID OFDM is affected by the chosen mapping. We classify the mapping selection and search for the optimal mapping for the proposed system. Simulation results show that up to 3dB gain is achieved for 8PSK and 16QAM in various conditions.

Original languageEnglish
Pages (from-to)1230-1234
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume61
Issue number2
Publication statusPublished - 2005
Event2005 IEEE 61st Vehicular Technology Conference -VTC 2005 - Spring Stockholm: Paving the Path for a Wireless Future - Stockholm, Sweden
Duration: 2005 May 302005 Jun 1

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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