NDLI: On the distortion-energy tradeoff for zero-delay transmission of a Gaussian source over the AWGN channel

Content Provider	IEEE Xplore Digital Library
Author	Koken, E. Tuncel, E. Gunduz, D.
Copyright Year	2015
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Univ. of California, Riverside, Riverside, CA, USA (Koken, E.; Tuncel, E.) \|\| Dept. of Electr. & Electron. Eng., Imperial Coll., Imperial, CA, USA (Gunduz, D.)
Abstract	An achievable scheme for zero-delay transmission of an i.i.d. Gaussian source over an additive white Gaussian channel with no bandwidth limitation is introduced, and its energy-distortion performance is analyzed. By the nature of the problem, one must transmit each source sample separately but can use the channel infinitely many times. We introduce an outage concept, and analyze the expected distortion conditioned on no outage. We show that the proposed scheme can approach to the asymptotical decay for large enough energy for arbitrary outage probability. The proposed scheme builds on separation of source and channel coding, whereby the source is quantized with a high-resolution optimal quantizer. In the high energy-to-noise ratio (ENR) regime, the minimum energy required to obtain a given distortion level in the proposed scheme can approach arbitrarily close the Shannon bound, which can only be achieved using infinite delay.
Starting Page	1
Ending Page	5
File Size	257682
Page Count	5
File Format	PDF
ISBN	9781479955244
e-ISBN	9781479955268
DOI	10.1109/ITW.2015.7133170
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-04-26
Publisher Place	Israel
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	AWGN channels Bandwidth Energy-distortion tradeoff Zero-delay Distortion High-resolution quantization Encoding Energy-distortion exponents Random variables Decoding Delays
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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