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On the Asymptotic P...
On the Asymptotic Performance of Bit-Wise Decoders for Coded Modulation
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- Ivanov, Mikhail, 1986 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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Alvarado, Alex, 1982 (författare)
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- Brännström, Fredrik, 1974 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Agrell, Erik, 1965 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2014
- 2014
- Engelska.
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Ingår i: IEEE Transactions on Information Theory. - 0018-9448 .- 1557-9654. ; 60:5, s. 2796-2804
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Two decoder structures for coded modulation over the Gaussian channel are studied: the maximum likelihood symbol-wise decoder, and the (suboptimal) bit-wise decoder based on the bit-interleaved coded modulation paradigm. We consider a 16-ary quadrature amplitude constellation labeled with a Gray labeling. It is shown that the asymptotic loss in terms of pairwise error probability, for any two codewords caused by the bit-wise decoder, is bounded by 1.25 dB. The analysis also shows that the asymptotic loss is zero for a wide range of linear codes, including all rate-1/2 convolutional codes.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Nyckelord
- pulse-amplitude modulation
- coded modulation
- logarithmic likelihood ratio
- Gray code
- bit-interleaved coded modulation
- pairwise error probability
- Additive white Gaussian noise
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