NDLI: Investigation of a full duplex acoustic link for a tetherless micro-ROV

Content Provider	IEEE Xplore Digital Library
Author	Goodfellow, G.M. Neasham, J.A. Tsimenidis, C.C. Hinton, O.R. Sharif, B.S.
Copyright Year	2011
Description	Author affiliation: School of Electrical, Electronic and Computer Engineering, Newcastle University, Merz Court, Newcastle upon Tyne, NE1 7RU, United Kingdom (Goodfellow, G.M.; Neasham, J.A.; Tsimenidis, C.C.; Hinton, O.R.; Sharif, B.S.)
Abstract	Over the last decade, vast improvements have been made in overcoming Inter Symbol Interference (ISI) in a dynamic underwater channel, with recent work focussing on multi-carrier systems due to their inherent multipath tolerance. However, the practical implementation of a bi-directional link for a micro remotely operated vehicle (ROV) presents additional complications. Erratic acceleration poses a challenge to previously reported Doppler compensation techniques, thus improvements in estimation and tracking are required. The use of a single-carrier scheme is demonstrated and critically evaluated in the presence of severe Doppler and interference caused by the vehicle. Through the tuning of an adaptive closed loop Doppler compensation structure, single-carrier modulation schemes demonstrate reliable high data rate communications. Minimum latency is essential for precise control and simultaneous video transmission, which can be achieved through the use of an asymmetric full duplex link. In this paper, filtering techniques are demonstrated to enable isolation of frequency multiplexed data streams and to prevent saturation of receiver circuitry. Results are presented demonstrating both single-carrier and multi-carrier high data rate transmissions (>30kbps) simultaneously with low data rate (<100bps) control signals at distances of over 300m.
Starting Page	1
Ending Page	7
File Size	6188466
Page Count	7
File Format	PDF
ISBN	9781457700866
e-ISBN	9781457700880
DOI	10.1109/Oceans-Spain.2011.6003491
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-06
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Doppler effect Estimation Interference Vehicles OFDM Receivers Acceleration
Content Type	Text
Resource Type	Article

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