DocumentCode
649018
Title
A polar-based demapper of 8PSK demodulation for DVB-S2 systems
Author
Barre, Arnaud ; Boutillon, E. ; Bias, Neysser ; Diaz, David
Author_Institution
Lab.-STICC, Univ. Eur. de Bretagne, Lorient, France
fYear
2013
fDate
16-18 Oct. 2013
Firstpage
13
Lastpage
17
Abstract
In this paper, we propose a polar-based 8-PSK demapper for DVB-S2 receivers. This demapper computes the Log-Likelihood Ratio (LLR) of the transmitted bit using the polar coordinate of the received 8-PSK symbol. Thanks to interpolation and approximation, the resulting demapper outperforms the classical LLR receiver based on Cartesian coordinates. Simulation shows almost no degradation compared to the optimal LLR generation for a 5-bit input precision of the Low-Density Parity-Check (LDPC) decoder.
Keywords
digital video broadcasting; phase shift keying; 8PSK demodulation; Cartesian coordinate; DVB-S2 systems; classical LLR receiver; log likelihood ratio; polar based demapper; polar coordinate; 8-PSK; Digital communication; LLR computation; demapper; polar coordinates;
fLanguage
English
Publisher
ieee
Conference_Titel
Signal Processing Systems (SiPS), 2013 IEEE Workshop on
Conference_Location
Taipei City
ISSN
2162-3562
Type
conf
DOI
10.1109/SiPS.2013.6674473
Filename
6674473
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