The Effect of Acoustic-Shell Coupling on Near-End Self-Interference Signal of In-Band Full-Duplex Underwater Acoustic Communication Modem

Qiao, Gang; Zhao, Yunjiang; Liu, Songzuo; Ahmed, Niaz

doi:10.1109/ibcast47879.2020.9044520

Cited by 11 publications

(19 citation statements)

References 8 publications

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“…In the IBFD-UWAC system, the energy range of the desired signal arrival is generally predicted, which is due to the fact that, in general, the desired signal at the far-end needs to occur after SIC and needs to satisfy the signal to interference plus noise ratio (SINR) condition required for the final demodulation; therefore, in this paper, we introduce parameters to constrain the stepsize variation. Inspired by the literature [29] and the Hampel trigonometric function, the step-size adjustment criterion is set as follows:…”

Section: Ivss-lms Algorithmmentioning

confidence: 99%

A Real-Time Digital Self Interference Cancellation Method for In-Band Full-Duplex Underwater Acoustic Communication Based on Improved VSS-LMS Algorithm

Qiao

Yang

et al. 2022

Remote Sensing

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Theoretically, the spectral efficiency of in-band full-duplex underwater acoustic communications (IBFD-UWAC) is twice that of a half-duplex one. However, the actual achievable spectral efficiency of IBFD-UWAC is determined by the performance of the self-interference cancellation (SIC). In addition, the hostile underwater environment poses a challenge to the tracking performance of the SIC due to its complexity and variability. In this paper, we propose a digital SIC method based on the improved variable step-size least mean square (IVSS-LMS) algorithm where we modify the step-size adjustment criterion in the classical LMS filter and establishes a nonlinear relationship with the Sigmoid function to control the step-size using the instantaneous state error, thus improving the robustness and tracking performance of IVSS-LMS. Hardware-in-loop simulation (HLS) based on Simulink® platform verifies the real-time implementability and effectiveness of the proposed IVSS-LMS algorithm. Furthermore, the sea trial results show that the digital SIC method based on the proposed algorithm can be implemented in real-time and the convergence speed, and steady-state performance are significantly improved.

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Section: Ivss-lms Algorithmmentioning

confidence: 99%

A Real-Time Digital Self Interference Cancellation Method for In-Band Full-Duplex Underwater Acoustic Communication Based on Improved VSS-LMS Algorithm

Qiao

Yang

et al. 2022

Remote Sensing

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“…Researchers have used the clip-off signaling technique before amplification to reduce the signal PAPR [23]. Furthermore, because of the FD communication path, IBFD-OFDM based UWAC systems suffer from the most severe SI and SLI from nearby transmitters, which reduces the efficiency of the IBFD-UWAC systems [41,58], as shown in Figure 3. After a long time, the SLI appears and is exceedingly difficult to suppress.…”

Section: Ofdm-based Ibfd Systemsmentioning

confidence: 99%

“…munication path, IBFD-OFDM based UWAC systems suffer from the most severe SI and SLI from nearby transmitters, which reduces the efficiency of the IBFD-UWAC systems [41,58], as shown in Figure 3. After a long time, the SLI appears and is exceedingly difficult to suppress.…”

mentioning

confidence: 99%

Full Duplex Physical and MAC Layer-Based Underwater Wireless Communication Systems and Protocols: Opportunities, Challenges, and Future Directions

Liu

Iqbal

Khan

et al. 2021

JMSE

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Underwater wireless communication has gained a great deal of attention in the last couple of decades because of its applications in the military, industrial, and monitoring sectors. Despite the extreme physical and MAC layer difficulties, acoustics are used for various applications among the various modes of underwater communication technologies used. While significant research efforts have been made to address these issues, the bottleneck remains in achieving high bandwidth, high throughputs, and data rate. Researchers have begun to look into full duplex (FD) implementation to improve bandwidth efficiency and increase data rate and throughput. Users can send and receive data simultaneously over the FD links, maximizing bandwidth utilization and increasing throughput. As a result, we thoroughly reviewed various FD physical layered UWAC systems and MAC layered protocols for underwater communication. The various problems that the aforementioned systems and protocols have faced, as well as the solutions suggested in previous works to solve each problem, are also highlighted. Various metrics are used to compare the performance of various physical layered FD systems and FD MAC protocols. We also explore some of the open research questions in these FD-physical layered and MAC layered protocols, as well as future research directions. Based on ample information, we suggest a cross-layered architecture based on various IBFD-SI cancellations, DA-CSMA, and FD-MAC protocols. This review provides a broad view of the current FD physical and MAC layered protocols based on acoustic communication, as well as recommendations.

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“…By recovering these nodes which are sinking underwater and the stored data can be obtained from them, but using underwater sensor networks one can do real-time monitoring of the region or the oceanic column around which these underwater sensor networks are deployed. There are various issues with underwater acoustic communication [7] [8]. Firstly, the speed of propagation of an acoustic transmission is several orders lower than that of a radio signal, leading to a longer end-to-end delay (E2ED).Due to repeated topological changes of sensor nodes caused by water currents, node densities in various sections of the network become unbalanced.…”

Section: Introductionmentioning

confidence: 99%

SC 2 R: Strategic cooperative cluster-based routing for Internet of Underwater Things

Gupta

Singh

2022

Preprint

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Oceanographic data gathering, pollution monitoring, offshore exploration, catastrophe avoidance, aided navigation, and tactical surveillance are all expected to benefit from the Internet of Underwater Things (IoUT). However, the viability of various applications in underwater scenarios is possible only if the routing among the sensor nodes employed is strategically optimized. This paper proposes Strategic Cooperative Routing for IoUT (SC2R) that employs a cooperative node for data collection from each Cluster-Head (CH). CH selection is done through the energy and distance parameters. The cooperative nodes are positioned on water surface, other nodes being placed in the underwater terrain. This cooperative routing helps in the data collection for the time-critical scenario as it avoids multi-hop communication among the sensor nodes underwater. Due to decreased number of hops of communication, the delay in data transmission is reduced. The simulation results illustrate the efficacy of the proposed routing technique in comparison to competitive algorithms. The proposed protocol outperforms state of art routing protocols in terms of Network Lifetime and End to End Delay (EED).

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The Effect of Acoustic-Shell Coupling on Near-End Self-Interference Signal of In-Band Full-Duplex Underwater Acoustic Communication Modem

Cited by 11 publications

References 8 publications

A Real-Time Digital Self Interference Cancellation Method for In-Band Full-Duplex Underwater Acoustic Communication Based on Improved VSS-LMS Algorithm

A Real-Time Digital Self Interference Cancellation Method for In-Band Full-Duplex Underwater Acoustic Communication Based on Improved VSS-LMS Algorithm

Full Duplex Physical and MAC Layer-Based Underwater Wireless Communication Systems and Protocols: Opportunities, Challenges, and Future Directions

SC 2 R: Strategic cooperative cluster-based routing for Internet of Underwater Things

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