Space-time cluster combining for UWA communications
Space-time cluster combining for UWA communications
Underwater acoustic (UWA) channels are characterized by spreading of received signals in space (angle of arrival) and delay. The spread is often limited to a small number of clusters. For combining signals spread in delay, equalizers are used. To separate space clusters, antenna arrays are used. In this paper, a receiver is investigated that exploits space-time clustering in UWA channels. The investigated receiver is designed for a communication system using guard-free orthogonal frequency division multiplexing (OFDM) signals with superimposed pilot symbols and a vertical linear array of hydrophones. We investigate and compare performance of several space-time processing techniques and show that the space-time cluster combining demonstrates the best performance. The comparison has been done using signals recorded on a 14-element vertical antenna array in sea trials at a distance of 105 km transmitted by a fast moving transducer. In these conditions, with the receiver, exploiting the cluster combining, error free transmission is achieved at a data rate of 0.33 bits/s/Hz. We also show that the cluster combining approach allows reduction in the complexity of the receiver.
underwater acoustic communication, direction-of-arrival (DOA)
Li, Jianghui
9c589194-00fa-4d42-abaf-53a32789cc5e
Liao, Li
d7c3dc84-7351-4e29-bb48-ebac558c8ae3
Zakharov, Yuriy
2abf7642-edba-4f15-8b98-4caca66510f6
10 April 2016
Li, Jianghui
9c589194-00fa-4d42-abaf-53a32789cc5e
Liao, Li
d7c3dc84-7351-4e29-bb48-ebac558c8ae3
Zakharov, Yuriy
2abf7642-edba-4f15-8b98-4caca66510f6
Li, Jianghui, Liao, Li and Zakharov, Yuriy
(2016)
Space-time cluster combining for UWA communications.
In OCEANS 2016 - Shanghai.
IEEE..
(doi:10.1109/OCEANSAP.2016.7485344).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Underwater acoustic (UWA) channels are characterized by spreading of received signals in space (angle of arrival) and delay. The spread is often limited to a small number of clusters. For combining signals spread in delay, equalizers are used. To separate space clusters, antenna arrays are used. In this paper, a receiver is investigated that exploits space-time clustering in UWA channels. The investigated receiver is designed for a communication system using guard-free orthogonal frequency division multiplexing (OFDM) signals with superimposed pilot symbols and a vertical linear array of hydrophones. We investigate and compare performance of several space-time processing techniques and show that the space-time cluster combining demonstrates the best performance. The comparison has been done using signals recorded on a 14-element vertical antenna array in sea trials at a distance of 105 km transmitted by a fast moving transducer. In these conditions, with the receiver, exploiting the cluster combining, error free transmission is achieved at a data rate of 0.33 bits/s/Hz. We also show that the cluster combining approach allows reduction in the complexity of the receiver.
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More information
Accepted/In Press date: 1 February 2016
Published date: 10 April 2016
Venue - Dates:
Oceans 2016 Shanghai, , Shanghai, China, 2016-04-10 - 2016-04-13
Keywords:
underwater acoustic communication, direction-of-arrival (DOA)
Identifiers
Local EPrints ID: 425538
URI: http://eprints.soton.ac.uk/id/eprint/425538
PURE UUID: 293a246e-b268-49d4-bbbc-187665424539
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Date deposited: 24 Oct 2018 16:30
Last modified: 15 Mar 2024 22:18
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Contributors
Author:
Li Liao
Author:
Yuriy Zakharov
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