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Capacity-Approaching Turbo Coding and Iterative Decoding for Relay Channels.

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Title: Capacity-Approaching Turbo Coding and Iterative Decoding for Relay Channels.
Authors: Zheng Zhang1 zzhang@chrontel.com, Duman, Tolga M.2 duman@asu.edu
Source: IEEE Transactions on Communications. Nov2005, Vol. 53 Issue 11, p1895-1905. 11p.
Subjects: Turbo languages (Computer program language), Algorithms, Programming languages, Decoders (Electronics), Coding theory, Decoders & decoding
Abstract: In this paper, we design turbo-based coding schemes for relay systems together with iterative decoding algorithms. In the proposed schemes, the source node sends coded information bits to both the relay and the destination nodes, while the relay simultaneously forwards its estimate for the previous coded block to the destination after decoding and re-encoding. The destination observes a superposition of the codewords and uses an iterative decoding algorithm to estimate the transmitted messages. Different from the block-by-block decoding techniques used in the literature, this decoding scheme operates over all the transmitted blocks jointly. Various encoding and decoding approaches are proposed for both single-input single-output and multi-input multi-output systems over several different channel models. Capacity bounds and information-rate bounds with binary inputs are also provided, and it is shown that the performance of the proposed practical scheme is typically about 1.0-1.5 dB away from the theoretical limits, and a remarkable advantage can be achieved over the direct and multihop transmission alternatives. [ABSTRACT FROM AUTHOR]
Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="AR" term="%22Zheng+Zhang%22">Zheng Zhang</searchLink><relatesTo>1</relatesTo><i> zzhang@chrontel.com</i><br /><searchLink fieldCode="AR" term="%22Duman%2C+Tolga+M%2E%22">Duman, Tolga M.</searchLink><relatesTo>2</relatesTo><i> duman@asu.edu</i>
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  Data: <searchLink fieldCode="DE" term="%22Turbo+languages+%28Computer+program+language%29%22">Turbo languages (Computer program language)</searchLink><br /><searchLink fieldCode="DE" term="%22Algorithms%22">Algorithms</searchLink><br /><searchLink fieldCode="DE" term="%22Programming+languages%22">Programming languages</searchLink><br /><searchLink fieldCode="DE" term="%22Decoders+%28Electronics%29%22">Decoders (Electronics)</searchLink><br /><searchLink fieldCode="DE" term="%22Coding+theory%22">Coding theory</searchLink><br /><searchLink fieldCode="DE" term="%22Decoders+%26+decoding%22">Decoders & decoding</searchLink>
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  Data: In this paper, we design turbo-based coding schemes for relay systems together with iterative decoding algorithms. In the proposed schemes, the source node sends coded information bits to both the relay and the destination nodes, while the relay simultaneously forwards its estimate for the previous coded block to the destination after decoding and re-encoding. The destination observes a superposition of the codewords and uses an iterative decoding algorithm to estimate the transmitted messages. Different from the block-by-block decoding techniques used in the literature, this decoding scheme operates over all the transmitted blocks jointly. Various encoding and decoding approaches are proposed for both single-input single-output and multi-input multi-output systems over several different channel models. Capacity bounds and information-rate bounds with binary inputs are also provided, and it is shown that the performance of the proposed practical scheme is typically about 1.0-1.5 dB away from the theoretical limits, and a remarkable advantage can be achieved over the direct and multihop transmission alternatives. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1109/TCOMM.2005.858654
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        Text: English
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        PageCount: 11
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        Type: general
      – SubjectFull: Algorithms
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      – SubjectFull: Programming languages
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      – SubjectFull: Decoders (Electronics)
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      – SubjectFull: Coding theory
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              Text: Nov2005
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