Multipath-Doppler diversity of OFDM signals in an underwater acoustic channel

Y V Zakharov; V P Kodanev

Multipath-Doppler diversity of OFDM signals in an underwater acoustic channel

Electronic Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

High-speed communications over the underwater acoustic channel are difficult due to time-varying multipath propagation and Doppler scattering. These phenomena, however, can be effectively used for joint multipath-Doppler diversity of received signals similarly to multipath diversity in a conventional Rake receiver. We present a new signal processing technique for data transmission over fast fading underwater acoustic channel by using OFDM signals. This technique exploits multipath-Doppler diversity which is based on the channel model as a sum of macro-rays characterised by delays, Doppler parameters and transfer functions. Delay and Doppler estimation involves calculation of the cross-ambiguity function for a pilot signal; transfer function estimation exploits frequency domain B-spline approximation. Experimental results demonstrate high BER performance of the proposed algorithm for various propagation scenarios.

Original language	English
Title of host publication	2000 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, PROCEEDINGS, VOLS I-VI
Place of Publication	NEW YORK
Publisher	IEEE
Pages	2941-2944
Number of pages	4
ISBN (Print)	0-7803-6293-4
Publication status	Published - 2000
Event	IEEE International Conference on Acoustics, Speech, and Signal Processing - ISTANBUL Duration: 5 Jun 2000 → 9 Jun 2000

Conference

Conference	IEEE International Conference on Acoustics, Speech, and Signal Processing
City	ISTANBUL
Period	5/06/00 → 9/06/00

Keywords

RECEPTION

Cite this

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title = "Multipath-Doppler diversity of OFDM signals in an underwater acoustic channel",

abstract = "High-speed communications over the underwater acoustic channel are difficult due to time-varying multipath propagation and Doppler scattering. These phenomena, however, can be effectively used for joint multipath-Doppler diversity of received signals similarly to multipath diversity in a conventional Rake receiver. We present a new signal processing technique for data transmission over fast fading underwater acoustic channel by using OFDM signals. This technique exploits multipath-Doppler diversity which is based on the channel model as a sum of macro-rays characterised by delays, Doppler parameters and transfer functions. Delay and Doppler estimation involves calculation of the cross-ambiguity function for a pilot signal; transfer function estimation exploits frequency domain B-spline approximation. Experimental results demonstrate high BER performance of the proposed algorithm for various propagation scenarios.",

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booktitle = "2000 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, PROCEEDINGS, VOLS I-VI",

publisher = "IEEE",

address = "United States",

note = "IEEE International Conference on Acoustics, Speech, and Signal Processing ; Conference date: 05-06-2000 Through 09-06-2000",

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TY - GEN

T1 - Multipath-Doppler diversity of OFDM signals in an underwater acoustic channel

AU - Zakharov, Y V

AU - Kodanev, V P

PY - 2000

Y1 - 2000

N2 - High-speed communications over the underwater acoustic channel are difficult due to time-varying multipath propagation and Doppler scattering. These phenomena, however, can be effectively used for joint multipath-Doppler diversity of received signals similarly to multipath diversity in a conventional Rake receiver. We present a new signal processing technique for data transmission over fast fading underwater acoustic channel by using OFDM signals. This technique exploits multipath-Doppler diversity which is based on the channel model as a sum of macro-rays characterised by delays, Doppler parameters and transfer functions. Delay and Doppler estimation involves calculation of the cross-ambiguity function for a pilot signal; transfer function estimation exploits frequency domain B-spline approximation. Experimental results demonstrate high BER performance of the proposed algorithm for various propagation scenarios.

AB - High-speed communications over the underwater acoustic channel are difficult due to time-varying multipath propagation and Doppler scattering. These phenomena, however, can be effectively used for joint multipath-Doppler diversity of received signals similarly to multipath diversity in a conventional Rake receiver. We present a new signal processing technique for data transmission over fast fading underwater acoustic channel by using OFDM signals. This technique exploits multipath-Doppler diversity which is based on the channel model as a sum of macro-rays characterised by delays, Doppler parameters and transfer functions. Delay and Doppler estimation involves calculation of the cross-ambiguity function for a pilot signal; transfer function estimation exploits frequency domain B-spline approximation. Experimental results demonstrate high BER performance of the proposed algorithm for various propagation scenarios.

KW - RECEPTION

M3 - Conference contribution

SN - 0-7803-6293-4

SP - 2941

EP - 2944

BT - 2000 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, PROCEEDINGS, VOLS I-VI

PB - IEEE

CY - NEW YORK

T2 - IEEE International Conference on Acoustics, Speech, and Signal Processing

Y2 - 5 June 2000 through 9 June 2000

ER -