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Information-Theoretic Analysis of Underwater Acoustic OFDM Systems in Highly Dispersive Channels
Joint Authors
Laot, Christophe
Passerieux, Jean-Michel
Socheleau, Francois-Xavier
Stojanovic, Milica
Source
Journal of Electrical and Computer Engineering
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-08-26
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Engineering Sciences and Information Technology
Information Technology and Computer Science
Abstract EN
This paper investigates the signal-to-interference ratio and the achievable rates of underwater acoustic (UA) OFDM systems over channels where time and frequency dispersion are high enough that (i) neither the transmitter nor the receiver can have a priori knowledge of the channel state information and (ii) intersymbol/intercarrier interference (ISI/ICI) cannot be neglected in the information-theoretic treatment.
The goal of this study is to obtain a better understanding of the interplay between interference and the achievable transmission rates.
Expressions for these rates take into account the “cross-channels” established by the ISI/ICI and are based on lower bounds on mutual information that assume independent and identically distributed input data symbols.
In agreement with recent statistical analyses of experimental shallow-water data, the channel is modeled as a multivariate Rician fading process with a slowly time-varying mean and with potentially correlated scatterers, which is more general than the common wide-sense stationary uncorrelated scattering model.
Numerical assessments on real UA channels with spread factors around 10−1 show that reliable OFDM transmissions at 2 to 4 bits/sec/Hz are achievable provided an average signal-to-noise ratio of 15 to 20 dB.
American Psychological Association (APA)
Socheleau, Francois-Xavier& Stojanovic, Milica& Laot, Christophe& Passerieux, Jean-Michel. 2012. Information-Theoretic Analysis of Underwater Acoustic OFDM Systems in Highly Dispersive Channels. Journal of Electrical and Computer Engineering،Vol. 2012, no. 2012, pp.1-15.
https://search.emarefa.net/detail/BIM-492927
Modern Language Association (MLA)
Socheleau, Francois-Xavier…[et al.]. Information-Theoretic Analysis of Underwater Acoustic OFDM Systems in Highly Dispersive Channels. Journal of Electrical and Computer Engineering No. 2012 (2012), pp.1-15.
https://search.emarefa.net/detail/BIM-492927
American Medical Association (AMA)
Socheleau, Francois-Xavier& Stojanovic, Milica& Laot, Christophe& Passerieux, Jean-Michel. Information-Theoretic Analysis of Underwater Acoustic OFDM Systems in Highly Dispersive Channels. Journal of Electrical and Computer Engineering. 2012. Vol. 2012, no. 2012, pp.1-15.
https://search.emarefa.net/detail/BIM-492927
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-492927