A Turbo Detection and Sphere-Packing-Modulation-Aided Space-Time Coding Scheme
A Turbo Detection and Sphere-Packing-Modulation-Aided Space-Time Coding Scheme
A recently proposed space-time block-coding (STBC) signal-construction method that combines orthogonal design with sphere packing (SP), referred to here as STBC-SP, has shown useful performance improvements over Alamouti’s conventional orthogonal design. In this contribution, we demonstrate that the performance of STBC-SP systems can be further improved by concatenating SP-aided modulation with channel coding and performing demapping as well as channel decoding iteratively. We also investigate the convergence behavior of this concatenated scheme with the aid of extrinsic-information-transfer charts. The proposed turbo-detected STBC-SP scheme exhibits a “turbo-cliff” at Eb/N0 = 2.5 dB and provides Eb/N0 gains of approximately 20.2 and 2.0 dB at a bit error rate of 10?5 over an equivalent throughput uncoded STBC-SP scheme and a turbo-detected quadrature phase shift keying (QPSK) modulated STBC scheme, respectively, when communicating over a correlated Rayleigh fading channel. Index Terms—EXIT charts, iterative demapping, multidimensional mapping, space-time coding, sphere packing, turbo detection.
575-582
Alamri, O
dc817f1e-d0f0-4986-a15f-5fc1506b70dc
YEAP, B-J.
ec9216af-62e6-45d1-b8e5-0459c54dd9cf
Hanzo, L
66e7266f-3066-4fc0-8391-e000acce71a1
2007
Alamri, O
dc817f1e-d0f0-4986-a15f-5fc1506b70dc
YEAP, B-J.
ec9216af-62e6-45d1-b8e5-0459c54dd9cf
Hanzo, L
66e7266f-3066-4fc0-8391-e000acce71a1
Alamri, O, YEAP, B-J. and Hanzo, L
(2007)
A Turbo Detection and Sphere-Packing-Modulation-Aided Space-Time Coding Scheme.
IEEE Transactions on Vehicular Technology, 56 (2), .
Abstract
A recently proposed space-time block-coding (STBC) signal-construction method that combines orthogonal design with sphere packing (SP), referred to here as STBC-SP, has shown useful performance improvements over Alamouti’s conventional orthogonal design. In this contribution, we demonstrate that the performance of STBC-SP systems can be further improved by concatenating SP-aided modulation with channel coding and performing demapping as well as channel decoding iteratively. We also investigate the convergence behavior of this concatenated scheme with the aid of extrinsic-information-transfer charts. The proposed turbo-detected STBC-SP scheme exhibits a “turbo-cliff” at Eb/N0 = 2.5 dB and provides Eb/N0 gains of approximately 20.2 and 2.0 dB at a bit error rate of 10?5 over an equivalent throughput uncoded STBC-SP scheme and a turbo-detected quadrature phase shift keying (QPSK) modulated STBC scheme, respectively, when communicating over a correlated Rayleigh fading channel. Index Terms—EXIT charts, iterative demapping, multidimensional mapping, space-time coding, sphere packing, turbo detection.
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Published date: 2007
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 263895
URI: http://eprints.soton.ac.uk/id/eprint/263895
ISSN: 0018-9545
PURE UUID: 93c7302b-ca17-4106-b1f0-b8039b2f7f4b
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Date deposited: 19 Apr 2007
Last modified: 18 Mar 2024 02:34
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Author:
O Alamri
Author:
B-J. YEAP
Author:
L Hanzo
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