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An Efficient FTN Decoding Method using Separation of LDPC Decoding Symbol in Next Generation Satellite Broadcasting System
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 Title & Authors
An Efficient FTN Decoding Method using Separation of LDPC Decoding Symbol in Next Generation Satellite Broadcasting System
Sung, Hahyun; Jung, Jiwon;
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 Abstract
To increase throughput efficiency and improve performance, FTN(Faster Than Nyquist) method and LDPC(Low Density Parity Code) codes are employed in DVB-S3 system. In this paper, we proposed efficient turbo equalization model to minimize inter symbol interference induced by FTN transmission. This paper introduces two conventional scheme employing SIC(Successive Interference Cancellation) and BCJR equalizer. Then, we proposed new scheme to resolve problems in this two conventional scheme. To make performance improved in turbo equalization model, the outputs of LDPC and BCJR equalizer are iteratively exchange probabilistic information. In fed LDPC outputs as extrinsic informa tion of BCJR equalizer. we split LDPC output to separate bit probabilities. We compare performance of proposed scheme to that of conventional methods through using simulation in AWGN(Additive White Gaussian Noise) channel. We confirmed that performance was improved compared to conventional methods as increasing throughput parameters of FTN.
 Keywords
FTN(Faster than Nyquist);Viterbi equalizer;LDPC codes;Turbo equalization;BCJR;
 Language
Korean
 Cited by
 References
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