Multiple-Input Multiple-Output Technique for Underwater Acoustic Communication System

Schmidt, J.; Schmidt, A.; Kochańska, Iwona

doi:10.1109/acoustics.2018.8502439

Cited by 8 publications

(6 citation statements)

References 8 publications

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“…In addition, it also includes the design of pressure-resistant waterproof batteries [128]. In the acoustic communication science, it chiefly involves the communication techniques, such as MIMO [129][130][131], cooperative communication [132][133][134], and cross-layer optimization [135,136], while marine science pays more attention to the modeling of underwater channels.…”

Section: Inherent Flaws Of Underwater Acoustic Sensor Networkmentioning

confidence: 99%

Advances in Software-Defined Technologies for Underwater Acoustic Sensor Networks: A Survey

et al. 2019

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Underwater Acoustic Sensor Networks (UASNs) are an important technical means to explore the ocean realm. However, most UASNs rely on hardware infrastructures with poor flexibility and versatility. The systems typically deploy in a redundant manner, which not only leads to waste but also causes serious signal interference due to multiple noises in designated underwater regions. Software-Defined Networking (SDN) is a novel network paradigm, which provides an innovative approach to improve flexibility and reduce development risks greatly. Although SDN and UASNs are hot topics, there are currently few studies built on both. In this paper, we provide a comprehensive review on the advances in software-defined UASNs. First, we briefly present the background, and then we review the progress of the Software-Defined Radio (SDR), Cognitive Radio (CR), and SDN. Next, we introduce the current issues and potential research areas. Finally, we conclude the paper and present discussions. Based on this work, we hope to inspire more active studies and take a further step on software-defined UASNs with high performances.

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Section: Inherent Flaws Of Underwater Acoustic Sensor Networkmentioning

confidence: 99%

Advances in Software-Defined Technologies for Underwater Acoustic Sensor Networks: A Survey

et al. 2019

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“…Currently developed underwater acoustic communication systems are mainly based on the spread spectrum technique, the orthogonal frequency-division multiplexing (OFDM) technique, chaotic signals, as well as incoherent and coherent modulations [ 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. Moreover, such systems may use a multi-antenna technique [ 12 , 13 ]. The most popular representatives of the spread spectrum technique are frequency-hopping spread spectrum (FHSS), direct-sequence spread spectrum (DSSS), and chirp spread spectrum (CSS), although there are also several variations [ 14 , 15 , 16 , 17 , 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Wake-Up Receiver for Underwater Acoustic Communication Using in Shallow Water

Schmidt

2023

Sensors

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A data frame transmitted over the underwater acoustic channel usually begins with a preamble. Therefore, underwater communication systems have a dedicated receiver that constantly listens to the preamble signals. A receiver that is to work effectively in shallow waters must have solutions that effectively reduce the impact of the permanently occurring multipath propagation. The article presents a solution based on complementary broadband signals. Initial tests were carried out using the Watermark simulator to determine its reliability in such a difficult propagation environment. The results of experimental tests carried out in a model pool are also included. Details of the implementation of the wake-up receiver are presented.

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“…A review of the challenges of MIMO systems for underwater was documented in 2017. 9 Also, an analysis of the performance in a simulated underwater acoustic channel was presented in Schmidt et al, 10 and the choice of the space-time block code (STBC) over the space-time trellis code was justified due to its lowcomputational complexity. The performance of MIMO communication links has also been measured in realistic sea conditions.…”

Section: Introductionmentioning

confidence: 99%

A Janus compatible software-defined underwater acoustic multiple-input multiple-output modem

Singh

Crispo

Bousquet

et al. 2021

International Journal of Distributed Sensor Networks

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This article describes the implementation of a multiple-input multiple-output acoustic communication link in shallow water conditions to enable a software-defined acoustic modem with a maximum transmission rate of 20 kbps in a 5-kHz bandwidth. The reliability improvement of a low-complexity Alamouti space–time block code is evaluated to improve the diversity in a high-rate transmission mode using single carrier modulation, as well as in a low-rate transmission mode relying on continuous-phase frequency-shift keying. Using measurements in realistic subsea conditions, the effect of the spatial channel correlation is demonstrated. It is found that for the space–time block code/continuous-phase frequency-shift keying, the spatial diversity is significantly degraded due to the high spatial correlation. In contrast, for the high-mode transmission rate, space–time block code with single carrier modulation offers a bit error rate improvement by a factor over hundred, in comparison to a single transmit element, demonstrating that the multiple-input multiple-output optimal code depends on the software-defined acoustic modem transmission mode.

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Multiple-Input Multiple-Output Technique for Underwater Acoustic Communication System

Cited by 8 publications

References 8 publications

Advances in Software-Defined Technologies for Underwater Acoustic Sensor Networks: A Survey

Advances in Software-Defined Technologies for Underwater Acoustic Sensor Networks: A Survey

Wake-Up Receiver for Underwater Acoustic Communication Using in Shallow Water

A Janus compatible software-defined underwater acoustic multiple-input multiple-output modem

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