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High-performance soft decision decoding method using table-aided algorithm for block code.

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Název: High-performance soft decision decoding method using table-aided algorithm for block code.
Autoři: Minami, Hideki1, Sasaoka, Hideichi2
Zdroj: Electronics & Communications in Japan, Part 1: Communications. Sep1997, Vol. 80 Issue 9, p56-67. 12p.
Témata: *ALGORITHMS, *DATA transmission systems, DECODERS (Electronics), CODING theory, BINARY-coded decimal system, ELECTRONICS
Abstrakt: Although various methods exist in soft decision decoding methods for block codes, of those that can be applied to linear and nonlinear coding, there are not many with low levels of computation that provide high levels of performance. In this paper, a method is proposed that reduces computation requirements while maintaining performance close to that of maximum likelihood decoding by a decision-making procedure in which a candidate codeword table is referenced by performing Euclidean distance comparisons on the received signal's hard decision binary sequence. The computation requirements and the block error rate performance are investigated through computer simulation to demonstrate the effectiveness of the proposed method in nonlinear β codes in additive Gaussian noise channels and fading channels. These results show that the block error rate performance of the proposed method in the additive Gaussian noise channel is about the same as the performance of the Chase 11 algorithm and is only slightly inferior to that of maximum likelihood decoding. Concerning the amount of computations, it is possible to reduce the complexity down to about 1% of that required by maximum likelihood decoding, and also the complexity can be reduced below that of the Chase II algorithm. On the other hand, in the fading channel, the block error rate performance of the proposed method, when compared to maximum likelihood decoding performance, reveals a decrease in Eb/N0 of about 1 dB, and it is seen to have good performance compared to the Chase II algorithm. Also, application toward quasi-cyclic coding/4-ary ASK coding using a candidate word table with respect to a 4-ary sequence applied with BCH coding is investigated, and superior results are obtained. © 1997 Scripta Technica, Inc. Electron Comm Jpn Pt 1, 80(9): 56–67, 1997 [ABSTRACT FROM AUTHOR]
Copyright of Electronics & Communications in Japan, Part 1: Communications is the property of Wiley-Blackwell 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: High-performance soft decision decoding method using table-aided algorithm for block code.
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  Data: <searchLink fieldCode="AR" term="%22Minami%2C+Hideki%22">Minami, Hideki</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Sasaoka%2C+Hideichi%22">Sasaoka, Hideichi</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Electronics+%26+Communications+in+Japan%2C+Part+1%3A+Communications%22">Electronics & Communications in Japan, Part 1: Communications</searchLink>. Sep1997, Vol. 80 Issue 9, p56-67. 12p.
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  Data: *<searchLink fieldCode="DE" term="%22ALGORITHMS%22">ALGORITHMS</searchLink><br />*<searchLink fieldCode="DE" term="%22DATA+transmission+systems%22">DATA transmission systems</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="%22BINARY-coded+decimal+system%22">BINARY-coded decimal system</searchLink><br /><searchLink fieldCode="DE" term="%22ELECTRONICS%22">ELECTRONICS</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Although various methods exist in soft decision decoding methods for block codes, of those that can be applied to linear and nonlinear coding, there are not many with low levels of computation that provide high levels of performance. In this paper, a method is proposed that reduces computation requirements while maintaining performance close to that of maximum likelihood decoding by a decision-making procedure in which a candidate codeword table is referenced by performing Euclidean distance comparisons on the received signal's hard decision binary sequence. The computation requirements and the block error rate performance are investigated through computer simulation to demonstrate the effectiveness of the proposed method in nonlinear β codes in additive Gaussian noise channels and fading channels. These results show that the block error rate performance of the proposed method in the additive Gaussian noise channel is about the same as the performance of the Chase 11 algorithm and is only slightly inferior to that of maximum likelihood decoding. Concerning the amount of computations, it is possible to reduce the complexity down to about 1% of that required by maximum likelihood decoding, and also the complexity can be reduced below that of the Chase II algorithm. On the other hand, in the fading channel, the block error rate performance of the proposed method, when compared to maximum likelihood decoding performance, reveals a decrease in Eb/N0 of about 1 dB, and it is seen to have good performance compared to the Chase II algorithm. Also, application toward quasi-cyclic coding/4-ary ASK coding using a candidate word table with respect to a 4-ary sequence applied with BCH coding is investigated, and superior results are obtained. © 1997 Scripta Technica, Inc. Electron Comm Jpn Pt 1, 80(9): 56–67, 1997 [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Electronics & Communications in Japan, Part 1: Communications is the property of Wiley-Blackwell 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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      – Type: doi
        Value: 10.1002/(SICI)1520-6424(199709)80:9<56::AID-ECJA7>3.0.CO;2-1
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      – Code: eng
        Text: English
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        PageCount: 12
        StartPage: 56
    Subjects:
      – SubjectFull: ALGORITHMS
        Type: general
      – SubjectFull: DATA transmission systems
        Type: general
      – SubjectFull: DECODERS (Electronics)
        Type: general
      – SubjectFull: CODING theory
        Type: general
      – SubjectFull: BINARY-coded decimal system
        Type: general
      – SubjectFull: ELECTRONICS
        Type: general
    Titles:
      – TitleFull: High-performance soft decision decoding method using table-aided algorithm for block code.
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            NameFull: Minami, Hideki
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            NameFull: Sasaoka, Hideichi
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            – D: 01
              M: 09
              Text: Sep1997
              Type: published
              Y: 1997
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              Value: 80
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              Value: 9
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            – TitleFull: Electronics & Communications in Japan, Part 1: Communications
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