Improving the performance of coded FDFR multi-antenna systems with turbo-decoding

Renqui Wang, Xiaoli Ma, G. B. Giannakis

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

Abstract

A full-diversity full-rate (FDFR) design was developed recently, to enable an uncoded layered space-time (LST) system to achieve full-diversity (NtNr) and full-rate (Nt symbols per channel use) simultaneously, for any number of transmit antennas Nt and receive antennas Nr. We investigate the performance of a coded FDFR system obtained by concatenating an error control coding (ECC) module and an FDFR module with a random interleaver in between. Iterative decoding is performed at the receiver. With Rc denoting the ECC rate, and d the minimum Hamming distance, an over-all transfer rate of RcNt symbols per channel use and a full diversity order dNtNr are achieved. Compared with coded V-BLAST, without sacrificing rate the coded FDFR system offers evident performance improvement when relatively weak codes are used. As Nr increases, even such a strong code as rate 1/2 turbo codes can benefit from FDFR. Specifically, 1.5 dB gain over coded V-BLAST is obtained in a 2 x 2 antenna setup when convolutional codes or rate 3/4 turbo codes are used. 0.5 dB gain is offered in a 2 x 5 setup when rate 1/2 turbo code is used. The price paid is increased complexity.

Original languageEnglish (US)
Title of host publicationProceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2003
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages306-309
Number of pages4
ISBN (Electronic)0780382927, 9780780382923
DOIs
StatePublished - Jan 1 2003
Event3rd IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2003 - Darmstadt, Germany
Duration: Dec 14 2003Dec 17 2003

Publication series

NameProceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2003

Conference

Conference3rd IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2003
CountryGermany
CityDarmstadt
Period12/14/0312/17/03

Keywords

  • Convolutional codes
  • Decoding
  • Error correction
  • Error correction codes
  • Fading
  • Hamming distance
  • Receiving antennas
  • Transmitters
  • Transmitting antennas
  • Turbo codes

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