Document Detail

Single- and multi-channel underwater acoustic communication channel capacity: a computational study.
MedLine Citation:
PMID:  17927425     Owner:  NLM     Status:  MEDLINE    
Acoustic communication channel capacity determines the maximum data rate that can be supported by an acoustic channel for a given source power and source/receiver configuration. In this paper, broadband acoustic propagation modeling is applied to estimate the channel capacity for a time-invariant shallow-water waveguide for a single source-receiver pair and for vertical source and receiver arrays. Without bandwidth constraints, estimated single-input, single-output (SISO) capacities approach 10 megabitss at 1 km range, but beyond 2 km range they decay at a rate consistent with previous estimates by Peloquin and Leinhos (unpublished, 1997), which were based on a sonar equation calculation. Channel capacities subject to source bandwidth constraints are approximately 30-90% lower than for the unconstrained case, and exhibit a significant wind speed dependence. Channel capacity is investigated for single-input, multi-output (SIMO) and multi-input, multi-output (MIMO) systems, both for finite arrays and in the limit of a dense array spanning the entire water column. The limiting values of the SIMO and MIMO channel capacities for the modeled environment are found to be about four times higher and up to 200-400 times higher, respectively, than for the SISO case. Implications for underwater acoustic communication systems are discussed.
Thomas J Hayward; T C Yang
Related Documents :
18530035 - An overview of time-reversal acoustics.
21973615 - Predicting scattering at the mid-frequency range.
18189625 - Acoustic surface-interaction phenomena during storms: a semi-empirical approach.
19063365 - Stretched, perforated, and auralized: a case study of integrating acoustic treatment in...
22889415 - Photothermal self-oscillation and laser cooling of graphene optomechanical systems.
17139755 - Anomalous negative dispersion in bone can result from the interference of fast and slow...
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  122     ISSN:  1520-8524     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2007 Sep 
Date Detail:
Created Date:  2007-10-11     Completed Date:  2008-03-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1652     Citation Subset:  IM    
Naval Research Laboratory, Washington, DC 20375, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Doppler Effect
Models, Theoretical
Sound Spectrography
Reg. No./Substance:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Effects of electrodes on performance figures of thin film bulk acoustic resonators.
Next Document:  A one-step patch near-field acoustical holography procedure.