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Conference Paper
Multi-Level Modulation LDPC Decoding Algorithm for New Generation DVB-S2 System
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- Authors
- In Ki Lee, Dae Ig Chang, Deock Gil Oh, Ji Won Jung, Duk Gun Choi
- Issue Date
- 2006-06
- Citation
- AIAA International Communications Satellite Systems Conference (ICSSC) 2006, pp.1166-1173
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, we introduce four kinds of simplified Soft-Decision Demapping algorithms for DVB-S2 system. First, A Log Likelihood Ratio Method, the optimal solution but high complexity, is introduced. Second, Euclidean distance method, a little performance degradation, third, Phase sector Method, low complexity, are presented. Lastly, Sub-LLR(Max operation) algorithm is proposed, which is little performance degradation and has a low complexity compared to LLR method.
- KSP Keywords
- DVB-S2, Euclidean distance method, LDPC decoding algorithm, Multilevel modulation, Optimal Solution, Soft-decision, likelihood ratio method, log likelihood ratio(LLR), low-complexity, performance degradation