Iterative double-loop hierarchical decoding with soft-aided bit-wise H-SODEM in WPNC networks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F18%3A00327170" target="_blank" >RIV/68407700:21230/18:00327170 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1109/ISTC.2018.8625375" target="_blank" >http://dx.doi.org/10.1109/ISTC.2018.8625375</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/ISTC.2018.8625375" target="_blank" >10.1109/ISTC.2018.8625375</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Iterative double-loop hierarchical decoding with soft-aided bit-wise H-SODEM in WPNC networks

Popis výsledku v původním jazyce

This paper addresses Wireless Physical Layer Network (WPNC) coding using Isomorphic Layered Network Coded Modulation (NCM) in hierarchical MAC stage with Hierarchical Decode and Forward (HDF) strategy. We focus on using binary component codes in bit-wise mapped higher-order hierarchical constellations and on the way how to improve the outer code iterative decoding. Soft bit-wise hierarchical decoding metric exhibits two important properties. (1) Unlike the single-user case, the hierarchical metric is many-to-one function of message symbols and even for perfect a priori soft-information, it contains hierarchical self-dispersion. (2) The bit-wise mapping itself creates a complicated nonlinear block-like inter-bit structure binding and the bit-wise observation model cannot be any longer described by single-letter entities. It also strongly depends on the source constellation bit mapping, actual bit-wise a priori PMFs, and also on the actual relative channel parametrization. We derive bit-wise soft-aided Hierarchical Soft-Output Demodulator (H-SODEM). We show how to cope with self-dispersion in specific cases. We analyze the bit error rate properties of the dual- loop soft-aided bit-wise hierarchical decoding in 2-source H-MAC HDF scenario and show significant performance improvement w.r.t. classical uniform a priori case.

Název v anglickém jazyce

Iterative double-loop hierarchical decoding with soft-aided bit-wise H-SODEM in WPNC networks

Popis výsledku anglicky

This paper addresses Wireless Physical Layer Network (WPNC) coding using Isomorphic Layered Network Coded Modulation (NCM) in hierarchical MAC stage with Hierarchical Decode and Forward (HDF) strategy. We focus on using binary component codes in bit-wise mapped higher-order hierarchical constellations and on the way how to improve the outer code iterative decoding. Soft bit-wise hierarchical decoding metric exhibits two important properties. (1) Unlike the single-user case, the hierarchical metric is many-to-one function of message symbols and even for perfect a priori soft-information, it contains hierarchical self-dispersion. (2) The bit-wise mapping itself creates a complicated nonlinear block-like inter-bit structure binding and the bit-wise observation model cannot be any longer described by single-letter entities. It also strongly depends on the source constellation bit mapping, actual bit-wise a priori PMFs, and also on the actual relative channel parametrization. We derive bit-wise soft-aided Hierarchical Soft-Output Demodulator (H-SODEM). We show how to cope with self-dispersion in specific cases. We analyze the bit error rate properties of the dual- loop soft-aided bit-wise hierarchical decoding in 2-source H-MAC HDF scenario and show significant performance improvement w.r.t. classical uniform a priori case.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20202 - Communication engineering and systems

Projekt

<a href="/cs/project/LTC17042" target="_blank" >LTC17042: Kooperativní kódování a zpracování v hustých rádiových cloudových komunikačních sítích</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

The 10th International Symposium on Turbo Codes & Iterative Information Processing 2018

ISBN

978-1-5386-7048-4

ISSN

2165-4700

e-ISSN

2165-4719

Počet stran výsledku

5

Strana od-do

—

Název nakladatele

IEEE

Místo vydání

—

Místo konání akce

Hong Kong

Datum konání akce

3. 12. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000458662300073