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http://dx.doi.org/10.6109/jkiice.2014.18.6.1323

A Study of Efficient Viterbi Equalizer in FTN Channel  

Kim, Tae-Hun (Department of Radio Communication Engineering, Korea Maritime and Ocean University)
Lee, In-Ki (Satellite and Wireless Convergence Research Department, Electronics and Telecommunications Research Institute)
Jung, Ji-Won (Department of Radio Communication Engineering, Korea Maritime and Ocean University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.18, no.6, 2014 , pp. 1323-1329 More about this Journal
Abstract
In this paper, we analyzed efficient decoding scheme with FTN (Faster than Nyquist) method that is transmission method faster than Nyquist theory and increase the throughput. we proposed viterbi equalizer model to minimize ISI (Inter-Symbol Interference) when FTN signal is transmitted. the proposed model utilized interference as branch information. In this paper, to decode FTN singal, we used turbo equalization algorithms that iteratively exchange probabilistic information between soft Viterbi equalizer (BCJR method) and LDPC decoder. By changing the trellis diagram in order to maximize Euclidean distance, we confirmed that performance was improved compared to conventional methods as increasing throughput of FTN signal.
Keywords
FTN (Faster than Nyquist); BCJR method; Viterbi Equalizer; LDPC codes; Turbo Equalization; ISI (Inter-Symbol Interference);
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