Title :
The Mapping and demmaping algorithms for high order modulation of DVB-S2 systems
Author :
Choi, Seung Hyun ; Oh, Cheon In ; Oh, Doeck Gil ; Chang, Dae Ig
Author_Institution :
Mobile Commun. & Digital Broadcasting Eng. Dept., Univ. of Sci. & Technol., Daejeon
Abstract :
DVB-S2 standard makes possible to send the signal with adaptive coding and modulation and supports four modulation modes scheme: QPSK, 8PSK, 16APSK and 32APSK. QPSK and 8PSK are typically proposed for many broadcast applications and it is to determine the decision regions for the received signal detection. But in the case of 16APSK and 32APSK it is difficult to determine the decision regions to demap the received signal because these constellations has the various ring (inner or outer). Therefore we propose the demapping algorithm for more simplified DVB-S2 detection and analyze the performance of this algorithm compared to the method employing the bound decision
Keywords :
adaptive codes; adaptive modulation; digital video broadcasting; modulation coding; quadrature phase shift keying; signal detection; DVB-S2 standard; QPSK; adaptive coding; adaptive modulation; demapping algorithm; digital video broadcasting; mapping algorithm; quadrature phase shift keying; received signal detection; Algorithm design and analysis; Broadcast technology; Digital modulation; Digital video broadcasting; Modulation coding; Multimedia communication; Parity check codes; Quadrature phase shift keying; Satellite broadcasting; Transponders; DVB-S2; Demapping; Log Likelihood Ration (LLR); Mapping;
Conference_Titel :
Communications, 2006. APCC '06. Asia-Pacific Conference on
Conference_Location :
Busan
Print_ISBN :
1-4244-0574-2
Electronic_ISBN :
1-4244-0574-2
DOI :
10.1109/APCC.2006.255815
