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Comparative Study of Turbo Equalization Schemes using Convolutional, Convolutional Turbo, and Block-Turbo Codes

Comparative Study of Turbo Equalization Schemes using Convolutional, Convolutional Turbo, and Block-Turbo Codes
Comparative Study of Turbo Equalization Schemes using Convolutional, Convolutional Turbo, and Block-Turbo Codes
Turbo equalizers have been shown to be successful in mitigating the effects of inter-symbol interference introduced by partial response modems and by dispersive channels for code rates of $R \le 1/2$. In this contribution, we comparatively studied the performance of a range of binary phase-shift keying turbo equalizers employing block-turbo codes, namely Bose–Chaudhuri–Hocquenghen turbo codes, convolutional codes, and convolutional turbo codes having high code rates, such as $R = 3/4$ and $R = 5/6$, over a dispersive five-path Gaussian channel and an equally weighted symbol-spaced five-path Rayleigh fading channel. These turbo equalization schemes were combined with an iterative channel estimation scheme in order to characterize a realistic scenario. The simulation results demonstrated that the turbo-equalized system using convolutional turbo codes was the most robust system for all code rates investigated. Index Terms—Bose–Chaudhuri–Hocquenghen codes, convolutional codes, iterative decoding, iterative equalization, joint equalization and decoding, turbo codes, turbo decoding, turbo equalization.
266-273
Yeap, B.L.
235ca05f-15be-46ae-952f-604b15dbf849
Liew, T.H.
a431a389-23f9-4360-9c85-8f4265770636
Hamorsky, J.
591c9a7f-ffc2-4482-9a85-833a8192617c
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Yeap, B.L.
235ca05f-15be-46ae-952f-604b15dbf849
Liew, T.H.
a431a389-23f9-4360-9c85-8f4265770636
Hamorsky, J.
591c9a7f-ffc2-4482-9a85-833a8192617c
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Yeap, B.L., Liew, T.H., Hamorsky, J. and Hanzo, L. (2002) Comparative Study of Turbo Equalization Schemes using Convolutional, Convolutional Turbo, and Block-Turbo Codes. IEEE Transactions on Wireless Communications, 1 (2), 266-273.

Record type: Article

Abstract

Turbo equalizers have been shown to be successful in mitigating the effects of inter-symbol interference introduced by partial response modems and by dispersive channels for code rates of $R \le 1/2$. In this contribution, we comparatively studied the performance of a range of binary phase-shift keying turbo equalizers employing block-turbo codes, namely Bose–Chaudhuri–Hocquenghen turbo codes, convolutional codes, and convolutional turbo codes having high code rates, such as $R = 3/4$ and $R = 5/6$, over a dispersive five-path Gaussian channel and an equally weighted symbol-spaced five-path Rayleigh fading channel. These turbo equalization schemes were combined with an iterative channel estimation scheme in order to characterize a realistic scenario. The simulation results demonstrated that the turbo-equalized system using convolutional turbo codes was the most robust system for all code rates investigated. Index Terms—Bose–Chaudhuri–Hocquenghen codes, convolutional codes, iterative decoding, iterative equalization, joint equalization and decoding, turbo codes, turbo decoding, turbo equalization.

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Published date: April 2002
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 257001
URI: http://eprints.soton.ac.uk/id/eprint/257001
PURE UUID: ee1fbd9c-63a3-49c1-88ed-ed30243bd83a
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 16 Dec 2003
Last modified: 03 Dec 2019 02:06

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Contributors

Author: B.L. Yeap
Author: T.H. Liew
Author: J. Hamorsky
Author: L. Hanzo ORCID iD

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