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Type: Artigo de periódico
Title: Curves on Flat Tori and Analog Source-Channel Codes
Author: Campello, A
Torezzan, C
Costa, SIR
Abstract: In this paper, we consider the problem of transmitting a continuous alphabet discrete-time source over an additive white Gaussian noise channel in the bandwidth expansion case. We propose a constructive scheme based on a set of curves on the surface of a 2N-dimensional sphere. Our approach shows that the design of good codes for this communication problem relies on geometrical properties of spherical codes and projections of N-dimensional rectangular lattices. Theoretical comparisons with some previous works in terms of the mean squared error as a function of the channel SNR, as well as simulations, are provided.
Subject: Analog modulation
flat tori
Country: EUA
Editor: Ieee-inst Electrical Electronics Engineers Inc
Rights: fechado
Identifier DOI: 10.1109/TIT.2013.2269135
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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