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Concatenated Space-time Block Coded and Turbo Coded Symbol-by-symbol Adaptive OFDM and Multi-Carrier CDMA Systems

Concatenated Space-time Block Coded and Turbo Coded Symbol-by-symbol Adaptive OFDM and Multi-Carrier CDMA Systems
Concatenated Space-time Block Coded and Turbo Coded Symbol-by-symbol Adaptive OFDM and Multi-Carrier CDMA Systems
Symbol-by-symbol adaptive Orthogonal Frequency Division Multiplex (OFDM) Modems counteract the near instantaneous channel quality variations and hence attain an increased throughput in comparison to their fixed-mode counterparts. By contrast, various diversity techniques, such as Rake receivers and space-time coding, mitigate the channel qulaity variations in their effort to obtain a reduced BER. This paper investigates a combined system constituted by a constant-power adaptive modem employing space-time coded diversity techniques in the context of both OFDM and MC-CDMA. The combined system is configured to produce a constant uncoded BER and exhibits virtually error free performance, when a turbo convolutional code is concatenated with a space-time block code. It was found that the advantage of the adaptive modem erodes, as the overall diversity-order increases.
776-780
Choi, B.J.
e5e6cf6f-c5a9-4fa1-a038-81782918a1f9
Liew, T.H.
a431a389-23f9-4360-9c85-8f4265770636
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Choi, B.J.
e5e6cf6f-c5a9-4fa1-a038-81782918a1f9
Liew, T.H.
a431a389-23f9-4360-9c85-8f4265770636
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Choi, B.J., Liew, T.H. and Hanzo, L. (2001) Concatenated Space-time Block Coded and Turbo Coded Symbol-by-symbol Adaptive OFDM and Multi-Carrier CDMA Systems. VTC'2001 (Spring), Rhodes, Greece. 06 - 09 May 2001. pp. 776-780 .

Record type: Conference or Workshop Item (Paper)

Abstract

Symbol-by-symbol adaptive Orthogonal Frequency Division Multiplex (OFDM) Modems counteract the near instantaneous channel quality variations and hence attain an increased throughput in comparison to their fixed-mode counterparts. By contrast, various diversity techniques, such as Rake receivers and space-time coding, mitigate the channel qulaity variations in their effort to obtain a reduced BER. This paper investigates a combined system constituted by a constant-power adaptive modem employing space-time coded diversity techniques in the context of both OFDM and MC-CDMA. The combined system is configured to produce a constant uncoded BER and exhibits virtually error free performance, when a turbo convolutional code is concatenated with a space-time block code. It was found that the advantage of the adaptive modem erodes, as the overall diversity-order increases.

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More information

Published date: May 2001
Additional Information: Abstract page 106 CD Rom, Paper 528. Event Dates: 6-9 May 2001 Organisation: IEEE Address: Rhodes, Greece
Venue - Dates: VTC'2001 (Spring), Rhodes, Greece, 2001-05-06 - 2001-05-09
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 255911
URI: http://eprints.soton.ac.uk/id/eprint/255911
PURE UUID: 24d57f01-f617-4ae3-9918-0eb505abc5f8
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 18 Dec 2003
Last modified: 03 Dec 2019 02:06

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