A Two-Step Multiuser Detection Scheme for Space-Time Coded MIMO OFDM Systems

Li Zhang*, Mathini Sellathurai, Jonathon A. Chambers

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

In this paper, we investigate transceiver design for a wideband multiuser-multiple-input, multiple-output (MIMO) communication system, where the co-channel users are equipped with multiple transmit and multiple receive antennas. In particular, we develop a two-step hard-decision interference cancellation receiver for a multiuser-MIMO uplink system which employs orthogonal frequency division multiplexing (OFDM) modulation and space-time block codes (STBC). The STBC has been implemented either over adjacent tones or adjacent OFDM symbols and the performances of both implementations have been tested under slowly time-varying channels. The two-step receiver structure has been implemented using a combined interference suppression scheme based on minimum mean-squared error (MMSE) and symbol-wise likelihood detectors, which is then followed by an interference cancellation step. The receiver can suppress and cancel the interference from the co-channel users effectively without increasing the complexity significantly. The paper also includes computer experiments that are intended to improve the understanding of specific issues involved in the design of multiuser STBC-OFDM systems
Original languageEnglish
Title of host publication2006 10th IEEE Singapore International Conference on Communication Systems
PublisherIEEE
ISBN (Electronic)1424404118
ISBN (Print)142440410X
DOIs
Publication statusPublished - 12 Feb 2007
Event10th IEEE Singapore International Conference on Communications Systems 2006 - Singapore, Singapore
Duration: 30 Oct 20061 Nov 2006
Conference number: 10

Publication series

NameIEEE Singapore International Conference on Communication Systems, ICCS 2006
PublisherIEEE

Conference

Conference10th IEEE Singapore International Conference on Communications Systems 2006
Abbreviated titleICCS 2006
Country/TerritorySingapore
CitySingapore
Period30/10/061/11/06

Keywords

  • Multiuser detection
  • MIMO
  • Interference cancellation
  • Interference suppression
  • Transceivers
  • Broadband antennas
  • Receiving antennas
  • Modulation coding
  • OFDM modulation
  • Black codes

ASJC Scopus subject areas

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

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