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Systematic Doping o...
Systematic Doping of SC-LDPC Codes
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- Zhu, Min (author)
- Xidian University
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- Mitchell, David G.M. (author)
- New Mexico State University
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- Lentmaier, Michael (author)
- Lund University,Lunds universitet,Kommunikationsteknologi,Forskargrupper vid Lunds universitet,LTH profilområde: AI och digitalisering,LTH profilområden,Lunds Tekniska Högskola,Communications Engineering,Lund University Research Groups,LTH Profile Area: AI and Digitalization,LTH Profile areas,Faculty of Engineering, LTH
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- Costello, Daniel J. (author)
- University of Notre Dame
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(creator_code:org_t)
- 2022
- 2022
- English 6 s.
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In: 2022 IEEE International Symposium on Information Theory, ISIT 2022. - 9781665421591 ; , s. 536-541
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Abstract
Subject headings
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- In this paper, we examine variable node (VN) doping to mitigate the error propagation problem in sliding window decoding (SWD) of spatially coupled LDPC (SC-LDPC) codes from the point of view of the encoding process. More specifically, in order to simplify the process of generating an encoded sequence with some number of doped code bits, we propose to employ systematic encoding and to limit doping to systematic bits only. Numerical results show that doping of systematic bits only achieves comparable performance to employing general (nonsystematic) encoding and full doping of all the code bits at each doping position, while benefiting from a much simpler encoding process. We then show that the inherent rate loss due to doping can be reduced by doping only a fraction of the variable nodes at each doping position with only a minor impact on performance.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Keyword
- decoder error propagation
- fractional doping
- sliding window decoding
- systematic doping
- variable node doping
Publication and Content Type
- kon (subject category)
- ref (subject category)
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