M to 1 Joint Source-Channel Coding of Gaussian Sources via Dichotomy of the Input Space Based on Deep Learning

In this paper, we propose a deep neural network framework for Joint Source-Channel Coding of an m dimensional i.i.d. Gaussian source for transmission over a single additive white Gaussian noise channel with no delay. The framework employs two neural encoder-decoder pairs that learn to split the inpu...

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Vydáno v:DCC (Los Alamitos, Calif.) s. 488 - 497
Hlavní autoři: Saidutta, Yashas Malur, Abdi, Afshin, Fekri, Faramarz
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.03.2019
Témata:
AWGN Channel
Channel coding
Decoding
Deep Learning
Deep Neural Networks
Gaussian Source
Image coding
Joint Source Channel Coding
Neural networks
Spirals
Transmitters
ISSN:2375-0359
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Shrnutí:In this paper, we propose a deep neural network framework for Joint Source-Channel Coding of an m dimensional i.i.d. Gaussian source for transmission over a single additive white Gaussian noise channel with no delay. The framework employs two neural encoder-decoder pairs that learn to split the input signal space into two disjoint support sets. The encoder and the decoder are jointly trained to minimize the mean square error subject to a power constraint on the signal transmitted across the channel. The proposed method achieves results as good as the state of the art for m=3,4 and is easily extendable to higher dimensions. The trained model, we discovered, assigns almost equal probability to the disjoint support sets. The results show that the scheme performance is within 1.9dB of the Shannon optimal limit over a wide range of Channel Signal to Noise Ratios (CSNR) from 0dB to 30dB for various values of m. The method is also robust, i.e. employing a model trained at CSNR+/-5dB is only 0.6dB worse than a model trained specifically for that CSNR.
ISSN:2375-0359
DOI:10.1109/DCC.2019.00057