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http://dx.doi.org/10.5573/ieie.2015.52.1.017

Joint Demodulation and Decoding System for FTN  

Kang, Donghoon (Department of Information Communications Engineering, Chungnam National University)
Oh, Wangrok (Department of Information Communications Engineering, Chungnam National University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.52, no.1, 2015 , pp. 17-23 More about this Journal
Abstract
In this paper, we propose an efficient joint demodulation and decoding scheme for FTN (Faster than Nyquist) systems. Several previous works have demonstrated that ISI (Inter Symbol Interference) cancellation schemes based on BCJR (Bahl-Cocke-Jelinek-Raviv) algorithm are suitable for FTN systems. Unfortunately, required complexity of the previous ISI cancellation schemes is very high, especially when a multi-level modulation scheme is employed. In this paper, we propose a joint demodulation and decoding scheme for FTN systems with an iteratively decodable channel coding scheme and a multi-level modulation. Compared with the previously proposed schemes, the proposed scheme not only offers reliable performance but also requires relatively low complexity. Also, the proposed scheme can be easily applied to the FTN system with a multi-level modulation with a minor modification.
Keywords
FTN system; Turbo code; Multi-level modulation; ISI cancellation;
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