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Reduced-Complexity I/Q Turbo Detector for Convolutional-Coding Assisted Space-Time Trellis Coding

Reduced-Complexity I/Q Turbo Detector for Convolutional-Coding Assisted Space-Time Trellis Coding
Reduced-Complexity I/Q Turbo Detector for Convolutional-Coding Assisted Space-Time Trellis Coding
This paper presents a reduced-complexity turbo detector for convolutional-coding aided space-time trellis coded (STTC) schemes. The proposed technique is based on the separate in-phase/quadrature-phase (I/Q) detection principle developed for single-transmitter and single-receiver systems. Essentially, the reduced-complexity I/Q turbo detector (R-TD) decomposes the received signal into its constituent I and Q components and detects these components separately, hence reducing the number of possible signal combinations to be ‘tested’ by the detector. It is observed that the R-TD is capable of approaching the performance of the full-complexity turbo detector, while achieving a complexity reduction factor of 4.2 for a R = 1/2 convolutional-coded 4-PSK 4-state STTC system communicating over two-path equal-weight Rayleigh fading channels. The performance of the convolutional-coded STTC schemes is also compared to that of the STTC benchmarker refraining from using channel coding, while maintaining a particular throughput. It was found that the convolutional-coded STTC system achieved a gain of 1.2 dB at BER=10E?5, although at the expense of a significant increase in complexity.
965-969
Yeap, B.L.
235ca05f-15be-46ae-952f-604b15dbf849
Liew, T.H.
a431a389-23f9-4360-9c85-8f4265770636
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Yeap, B.L.
235ca05f-15be-46ae-952f-604b15dbf849
Liew, T.H.
a431a389-23f9-4360-9c85-8f4265770636
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Yeap, B.L., Liew, T.H. and Hanzo, L. (2002) Reduced-Complexity I/Q Turbo Detector for Convolutional-Coding Assisted Space-Time Trellis Coding. VTC'2002 (Fall), Canada. 24 - 28 Sep 2002. pp. 965-969 .

Record type: Conference or Workshop Item (Paper)

Abstract

This paper presents a reduced-complexity turbo detector for convolutional-coding aided space-time trellis coded (STTC) schemes. The proposed technique is based on the separate in-phase/quadrature-phase (I/Q) detection principle developed for single-transmitter and single-receiver systems. Essentially, the reduced-complexity I/Q turbo detector (R-TD) decomposes the received signal into its constituent I and Q components and detects these components separately, hence reducing the number of possible signal combinations to be ‘tested’ by the detector. It is observed that the R-TD is capable of approaching the performance of the full-complexity turbo detector, while achieving a complexity reduction factor of 4.2 for a R = 1/2 convolutional-coded 4-PSK 4-state STTC system communicating over two-path equal-weight Rayleigh fading channels. The performance of the convolutional-coded STTC schemes is also compared to that of the STTC benchmarker refraining from using channel coding, while maintaining a particular throughput. It was found that the convolutional-coded STTC system achieved a gain of 1.2 dB at BER=10E?5, although at the expense of a significant increase in complexity.

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More information

Published date: 2002
Additional Information: Event Dates: 24-28 September 2002
Venue - Dates: VTC'2002 (Fall), Canada, 2002-09-24 - 2002-09-28
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 258270
URI: http://eprints.soton.ac.uk/id/eprint/258270
PURE UUID: d8db826e-2e2a-4707-a50d-e46e19686122
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 16 Dec 2003
Last modified: 20 Jul 2019 01:26

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