Iterative MAP receiver for interference suppression in SDM/OFDM systems

Seung Young Park, Chung Gu Kang

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

In this paper, we propose a reduced complexity iterative algorithm for joint maximum a posteriori (MAP) detection and interference suppression in orthogonal frequency division multiplex (OFDM)-based space division multiplexing (SDM) systems. The receiver employs an iterative architecture where each iteration stage consists of the estimation of channel/covariance for co-channel interferences (CCIs) and the MAP detection that suppresses interference while detecting the data. The interference suppression is performed in the MAP detection by whitening the interferences through combining the estimated covariance with the conventional MAP detection metric. Extensive simulations demonstrate that the proposed scheme dramatically improves the performance compared to that of the iterative MAP scheme without the suppression. Furthermore, it can effectively suppress both synchronous and asynchronous CCIs without any a priori information on the CCIs.

Original languageEnglish
Pages (from-to)1065-1069
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume56
Issue number2
Publication statusPublished - 2002
Event56th Vehicular Technology Conference - Vancouver, BC, Canada
Duration: 2002 Sep 242002 Sep 28

Keywords

  • Interference suppression
  • MIMO
  • OFDM
  • Spatial multiplexing
  • Turbo principle

ASJC Scopus subject areas

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

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