NDLI: NN-based IDF demodulator in band-limited communication system

Content Provider	IET Digital Library
Author	Meng, Fan Chen, Peng Wu, Lenan
Abstract	To meet the spectrum requirement in the future wireless communication system, the m-ary phase position shift keying as a type of the spectrally efficient modulation has been considered in this study. However, the inter-symbol interference (ISI), the waveform distortion and the non-white noise are introduced by the band-pass infinite impulse response filters, which is adopted to limit the signal bandwidth and eliminate the out-band interference. The traditional demodulation methods based on impacting filter or matched filter cannot work well in these scenarios. Therefore, a neural network (NN)-based demodulator is proposed to solve the problem of waveform distortion. Additionally, a novel NN-based iterative decision feedback (IDF) demodulator is also proposed to further reduce the ISI iteratively by using the previous estimated symbol information. Simulation results show that both the NN-based demodulator and the NN-based IDF demodulator can greatly outperform the traditional demodulation methods in the band-limited communication system, and the NN-based IDF demodulator achieves better performance than the normal NN-based demodulator.
Starting Page	198
Ending Page	204
Page Count	7
ISSN	17518628
Volume Number	12
e-ISSN	17518636
Issue Number	Issue 2, Jan (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/12/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2017.0643
Journal	IET Communications
Publisher Date	2017-11-08
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Band-pass Filter Band-pass Infinite Impulse Response Filter Bandlimited Communication System Communication Computing Demodulation Method Demodulator Discriminators And Mixers Filtering Method in Signal Processing IIR Filter Impacting Filter Interference Suppression Interpolation And Function Approximation Intersymbol Interference ISI Iterative Decision Feedback Demodulator Iterative Method M-ary Phase Position Shift Keying Matched Filter Modulation And Coding Method Modulator Neural Computing Technique Neural Nets Neural Network-based Demodulator NN-based IDF Demodulator Nonwhite Noise Numerical Analysis Out-band Interference Elimination Phase Shift Keying Radio Link And Equipment Radio Network Signal Bandwidth Signal Denoising Signal Processing Theory Spectrally Efficient Modulation Spectrum Requirement Symbol Information Estimation Telecommunication Computing Waveform Distortion Wireless Communication System
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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