DocumentCode :
1646970
Title :
Simplified soft-decision demapping algorithm for DVB-S2
Author :
Park, Jang Woong ; Ryu, Chang Duk ; Sunwoo, Myung Hoon ; Kim, Pan Soo ; Chang, Dae-Ig
Author_Institution :
Sch. of Electr. & Comput. Eng., Ajou Univ., Suwon, South Korea
fYear :
2009
Firstpage :
444
Lastpage :
447
Abstract :
This paper presents a simplified soft-decision demapping algorithm for digital video broadcasting via satellite, second generation (DVB-S2). To achieve a good bit error rate (BER) performance of a low density parity check (LDPC) code decoder, the received signal should be soft-decided rather than hard-decided. However, the soft-decision demapper requires high hardware complexity to support higher-order modulation modes. The proposed soft-decision demapping algorithm can reduce computation complexity by eliminating a square operation. In addition, simulation results show that the proposed algorithm has negligible performance degradation compared with the conventional algorithms.
Keywords :
computational complexity; digital video broadcasting; direct broadcasting by satellite; error statistics; parity check codes; BER; DVB-S2; LDPC code; bit error rate; computation complexity; digital video broadcasting via satellite; hardware complexity; higher order modulation modes; low density parity check code; second generation; simplified soft-decision demapping; AWGN; Bit error rate; Digital video broadcasting; Forward error correction; Hardware; Parity check codes; Quadrature phase shift keying; Satellite broadcasting; Telecommunication computing; Transponders; APSK; DVB-S2; PSK; Soft-Decision Demapper;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
SoC Design Conference (ISOCC), 2009 International
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5034-3
Electronic_ISBN :
978-1-4244-5035-0
Type :
conf
DOI :
10.1109/SOCDC.2009.5423908
Filename :
5423908
Link To Document :
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