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학술대회 Low Complexity Soft-decision Demapper for DVB-S2 using Phase Selection Method
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저자
이재학, 선우명훈, 김판수, 장대익
발행일
201102
출처
International Conference on Ubiquitous Information Management and Communication (ICUIMC) 2011, pp.1-6
DOI
https://dx.doi.org/10.1145/1968613.1968668
협약과제
11PR4800, 채널 적응형 실감위성방송 전송기술 개발, 오덕길
초록
This paper presents a simplified soft-decision demapping algorithm using the phase selection method 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) decoder and support higher-order modulation modes, the soft-decision demapper should require high hardware complexity. The proposed soft-decision demapping algorithm can reduce computation complexity by eliminating square operations. In addition, simulation results show that the proposed algorithm has negligible performance degradation compared with the conventional algorithms. Moreover, the proposed soft-decision demapper has been verified using the Virtex IV-LX 200 FPGA board. Comparing with the direct implementation, the proposed demapper can reduce about 81% hardware resources. Copyright 2011 ACM.
키워드
Demapper, Low Density Parity Check (LDPC), Phase-selection method, Satellite communication, Soft-decision
KSP 제안 키워드
Bit Error Rate(And BER), DVB-S2, Digital video broadcasting, FPGA Board, Hardware Resources, Hardware complexity, Higher order, Low Density Parity Check(LDPC), Modulation mode, Second generation(2G), Selection method