M-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror method
Abstract Linear chirp spread spectrum technique is widely used in underwater acoustic communication because of their resilience to high multipath and Doppler shift. Linear frequency modulated signal requires a high spreading factor to nearly reach orthogonality between two pairs of signals. On the o...
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doaj-5837fcfe54d64999a7f9b3823ea5da052021-05-02T11:30:16ZengSpringerOpenEURASIP Journal on Wireless Communications and Networking1687-14992021-05-012021112010.1186/s13638-021-01995-3M-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror methodSongzuo Liu0Habib Hussain Zuberi1Yi Lou2Muhmmad Bilal Farooq3Shahabuddin Shaikh4Waleed Raza5Acoustic Science and Technology Laboratory, Harbin Engineering UniversityAcoustic Science and Technology Laboratory, Harbin Engineering UniversityAcoustic Science and Technology Laboratory, Harbin Engineering UniversityAcoustic Science and Technology Laboratory, Harbin Engineering UniversityCollege of Underwater Acoustic Engineering, Harbin Engineering UniversityAcoustic Science and Technology Laboratory, Harbin Engineering UniversityAbstract Linear chirp spread spectrum technique is widely used in underwater acoustic communication because of their resilience to high multipath and Doppler shift. Linear frequency modulated signal requires a high spreading factor to nearly reach orthogonality between two pairs of signals. On the other hand, nonlinear chirp spread spectrum signals can provide orthogonality at a low spreading factor. As a result, it improves spectral efficiency and is more insensitive to Doppler spread than the linear counterpart. To achieve a higher data rate, we propose two variants (half cycle sine and full cycle sine) of the M-ary nonlinear sine chirp spread spectrum technique based on virtual time-reversal mirror (VTRM). The proposed scheme uses different frequency bands to transmit chirp, and VTRM is used to improve the bit error rate due to high multipath. Its superior Doppler sensitivity makes it suitable for underwater acoustic communication. Furthermore, the proposed method uses a simple, low-power bank of matched filters; thus, it reduces the overall system complexity. Simulations are performed in different underwater acoustic channels to verify the robustness of the proposed scheme.https://doi.org/10.1186/s13638-021-01995-3Underwater acoustic communicationNonlinear chirpSine chirpVirtual time-reversal mirror method |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Songzuo Liu Habib Hussain Zuberi Yi Lou Muhmmad Bilal Farooq Shahabuddin Shaikh Waleed Raza |
spellingShingle |
Songzuo Liu Habib Hussain Zuberi Yi Lou Muhmmad Bilal Farooq Shahabuddin Shaikh Waleed Raza M-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror method EURASIP Journal on Wireless Communications and Networking Underwater acoustic communication Nonlinear chirp Sine chirp Virtual time-reversal mirror method |
author_facet |
Songzuo Liu Habib Hussain Zuberi Yi Lou Muhmmad Bilal Farooq Shahabuddin Shaikh Waleed Raza |
author_sort |
Songzuo Liu |
title |
M-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror method |
title_short |
M-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror method |
title_full |
M-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror method |
title_fullStr |
M-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror method |
title_full_unstemmed |
M-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror method |
title_sort |
m-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror method |
publisher |
SpringerOpen |
series |
EURASIP Journal on Wireless Communications and Networking |
issn |
1687-1499 |
publishDate |
2021-05-01 |
description |
Abstract Linear chirp spread spectrum technique is widely used in underwater acoustic communication because of their resilience to high multipath and Doppler shift. Linear frequency modulated signal requires a high spreading factor to nearly reach orthogonality between two pairs of signals. On the other hand, nonlinear chirp spread spectrum signals can provide orthogonality at a low spreading factor. As a result, it improves spectral efficiency and is more insensitive to Doppler spread than the linear counterpart. To achieve a higher data rate, we propose two variants (half cycle sine and full cycle sine) of the M-ary nonlinear sine chirp spread spectrum technique based on virtual time-reversal mirror (VTRM). The proposed scheme uses different frequency bands to transmit chirp, and VTRM is used to improve the bit error rate due to high multipath. Its superior Doppler sensitivity makes it suitable for underwater acoustic communication. Furthermore, the proposed method uses a simple, low-power bank of matched filters; thus, it reduces the overall system complexity. Simulations are performed in different underwater acoustic channels to verify the robustness of the proposed scheme. |
topic |
Underwater acoustic communication Nonlinear chirp Sine chirp Virtual time-reversal mirror method |
url |
https://doi.org/10.1186/s13638-021-01995-3 |
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