Zero-delay joint source-channel coding with a 1-bit ADC front end and receiver side information

Document Type

Conference Proceeding

Publication Date

10-21-2016

Abstract

Zero-delay transmission of a Gaussian source over an additive white Gaussian noise (AWGN) channel with a 1-bit analog-to-digital converter (ADC) front end is investigated in the presence of correlated side information at the receiver. The design of the optimal encoder is considered for the mean squared error (MSE) distortion criterion under an average power constraint on the channel input. A necessary condition for the optimality of the encoder is derived. A numerically optimized encoder (NOE) is then obtained that aims that enforcing the necessary condition. It is observed that, due to the availability of receiver side information, the optimal encoder mapping is periodic, with its period depending on the correlation coefficient between the source and the side information. We then propose two parameterized encoder mappings, referred to as periodic linear transmission (PLT) and periodic BPSK transmission (PBT), which trade-off optimality for reduced complexity as compared to the NOE solution. We observe via numerical results that PBT performs close to the NOE in the high signal-to-noise ratio (SNR) regime, while PLT approaches the NOE performance in the low SNR regime.

Identifier

84998534557 (Scopus)

ISBN

[9781509010905]

Publication Title

2016 IEEE Information Theory Workshop Itw 2016

External Full Text Location

https://doi.org/10.1109/ITW.2016.7606874

First Page

449

Last Page

453

This document is currently not available here.

Share

COinS