A Fast Encoding Method of QC-LDPC Code Used in ABS-S System

Authors:
Shi Yuhai;Liu Chunjiang;Yang Ming
Affiliations:
-;-;-
Venue:
PACCS '09 Proceedings of the 2009 Pacific-Asia Conference on Circuits, Communications and Systems
Year:
2009

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Trends and challenges in LDPC hardware decoders

Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers

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Abstract

First, the paper introduces a new generation satellite broadcasting system in China named Advanced Broadcasting System-Satellite (ABS-S) that offers system performance and service versatility suitable for future satellite digital broadcasting. Meanwhile the new system utilizes fixed frame structure to realize the CCM, VCM and ACM working modes adopted by DVB-S2 system to further simplify the complexity of the implementation. Secondly, this paper points out the shortcomings of LDPC code used in DVB-S2 and detailedly describes the LDPC code used in ABS-S. Then, based on the simulation result, we can say that the performance of LDPC codes used in ABS-S is better than that of DVB-S2 and the complexity is also lower than that of DVB-S2. At last, we put forward a fast method to encode the QC-LDPC code used in ABS-S system.