Time Reversal Acoustic Communication Using Filtered Multitone Modulation
The multipath spread in underwater acoustic channels is severe and, therefore, when the symbol rate of the time reversal (TR) acoustic communication using single-carrier (SC) modulation is high, the large intersymbol interference (ISI) span caused by multipath reduces the performance of the TR proc...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2015-09-01
|
Series: | Sensors |
Subjects: | |
Online Access: | http://www.mdpi.com/1424-8220/15/9/23554 |
id |
doaj-1b957dc4b58d44cab447d635dde612f8 |
---|---|
record_format |
Article |
spelling |
doaj-1b957dc4b58d44cab447d635dde612f82020-11-24T22:06:43ZengMDPI AGSensors1424-82202015-09-01159235542357110.3390/s150923554s150923554Time Reversal Acoustic Communication Using Filtered Multitone ModulationLin Sun0Baowei Chen1Haisen Li2Tian Zhou3Ruo Li4College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, ChinaThe multipath spread in underwater acoustic channels is severe and, therefore, when the symbol rate of the time reversal (TR) acoustic communication using single-carrier (SC) modulation is high, the large intersymbol interference (ISI) span caused by multipath reduces the performance of the TR process and needs to be removed using the long adaptive equalizer as the post-processor. In this paper, a TR acoustic communication method using filtered multitone (FMT) modulation is proposed in order to reduce the residual ISI in the processed signal using TR. In the proposed method, FMT modulation is exploited to modulate information symbols onto separate subcarriers with high spectral containment and TR technique, as well as adaptive equalization is adopted at the receiver to suppress ISI and noise. The performance of the proposed method is assessed through simulation and real data from a trial in an experimental pool. The proposed method was compared with the TR acoustic communication using SC modulation with the same spectral efficiency. Results demonstrate that the proposed method can improve the performance of the TR process and reduce the computational complexity of adaptive equalization for post-process.http://www.mdpi.com/1424-8220/15/9/23554underwater acoustic communicationfiltered multitone modulationtime reversaladaptive equalization |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lin Sun Baowei Chen Haisen Li Tian Zhou Ruo Li |
spellingShingle |
Lin Sun Baowei Chen Haisen Li Tian Zhou Ruo Li Time Reversal Acoustic Communication Using Filtered Multitone Modulation Sensors underwater acoustic communication filtered multitone modulation time reversal adaptive equalization |
author_facet |
Lin Sun Baowei Chen Haisen Li Tian Zhou Ruo Li |
author_sort |
Lin Sun |
title |
Time Reversal Acoustic Communication Using Filtered Multitone Modulation |
title_short |
Time Reversal Acoustic Communication Using Filtered Multitone Modulation |
title_full |
Time Reversal Acoustic Communication Using Filtered Multitone Modulation |
title_fullStr |
Time Reversal Acoustic Communication Using Filtered Multitone Modulation |
title_full_unstemmed |
Time Reversal Acoustic Communication Using Filtered Multitone Modulation |
title_sort |
time reversal acoustic communication using filtered multitone modulation |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2015-09-01 |
description |
The multipath spread in underwater acoustic channels is severe and, therefore, when the symbol rate of the time reversal (TR) acoustic communication using single-carrier (SC) modulation is high, the large intersymbol interference (ISI) span caused by multipath reduces the performance of the TR process and needs to be removed using the long adaptive equalizer as the post-processor. In this paper, a TR acoustic communication method using filtered multitone (FMT) modulation is proposed in order to reduce the residual ISI in the processed signal using TR. In the proposed method, FMT modulation is exploited to modulate information symbols onto separate subcarriers with high spectral containment and TR technique, as well as adaptive equalization is adopted at the receiver to suppress ISI and noise. The performance of the proposed method is assessed through simulation and real data from a trial in an experimental pool. The proposed method was compared with the TR acoustic communication using SC modulation with the same spectral efficiency. Results demonstrate that the proposed method can improve the performance of the TR process and reduce the computational complexity of adaptive equalization for post-process. |
topic |
underwater acoustic communication filtered multitone modulation time reversal adaptive equalization |
url |
http://www.mdpi.com/1424-8220/15/9/23554 |
work_keys_str_mv |
AT linsun timereversalacousticcommunicationusingfilteredmultitonemodulation AT baoweichen timereversalacousticcommunicationusingfilteredmultitonemodulation AT haisenli timereversalacousticcommunicationusingfilteredmultitonemodulation AT tianzhou timereversalacousticcommunicationusingfilteredmultitonemodulation AT ruoli timereversalacousticcommunicationusingfilteredmultitonemodulation |
_version_ |
1725822279369097216 |