A time-reversal based digital cancelation scheme for in-band full-duplex underwater acoustic systems

Tian, Jing; Yan, Shefeng; Xu, Lijun; Xi, Junyi

doi:10.1109/oceansap.2016.7485471

Cited by 14 publications

(16 citation statements)

References 9 publications

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“…These systems, however, suffer from a high peak-to-average-power ratio (PAPR) due to the use of OFDM as a modulation technique. Furthermore, selfinterference limits IBFD-OFDM systems, and various systems (e.g., HSIC [20], TRDC [22], ML-SC-IBFD [23], and A-IBFD [24]) have been developed to resolve this issue. SI cancellation is the goal of digital modulation-based FD systems, and they are classified as such.…”

Section: Motivations and Contributionsmentioning

confidence: 99%

“…Self-interference (SI): The efficiency of FD-UWAC protocols is influenced by two types of interference: Multiple reflection interference (MRI) and SLI [22][23][24]41]. The SLI has a significant impact on the performance of IBFD-UWAC systems, which usually appear after a long period of time.…”

Section: Challenges Faced By Fd Physical Layered Uwac Systemsmentioning

confidence: 99%

“…Various methods have been developed to suppress SLI, such as [14], which implements a method that uses both analog and digital cancellation to reduce SLI. Soft-decision feedback turbo equalization (SDFE) is used to remove ISI and residual self-interference in [22]. However, the SI problem remains a significant challenge for the protocols listed.…”

Section: Challenges Faced By Fd Physical Layered Uwac Systemsmentioning

confidence: 99%

“…Noises: Noise is a widespread and fundamental issue that has a significant impact on the efficiency of all types of underwater FD physical layered UWAC systems [22,41]. Ambient noise has a major impact on FD-physical layer dependent systems at the receiver section, where an increase in noise power (dB) is directly proportional to an increase in residual analog interference.…”

Section: Challenges Faced By Fd Physical Layered Uwac Systemsmentioning

confidence: 99%

“… TRDC. Using time-reversal and soft-decision feedback turbo equalization, a novel TRDC automatic cancellation scheme for the elimination of ISI and RSI is proposed (SDFE) [22]. When compared to the previously used scheme, this proposed scheme had a substantial gain of 2.5 dB and demonstrated significant performance by achieving high spectral efficiency.…”

mentioning

confidence: 99%

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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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Section: Motivations and Contributionsmentioning

confidence: 99%

Section: Challenges Faced By Fd Physical Layered Uwac Systemsmentioning

confidence: 99%

Section: Challenges Faced By Fd Physical Layered Uwac Systemsmentioning

confidence: 99%

Section: Challenges Faced By Fd Physical Layered Uwac Systemsmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

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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Self-Interference Channel Estimation Algorithm Based on Maximum-Likelihood Estimator in In-Band Full-Duplex Underwater Acoustic Communication System

et al. 2018

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Lake Experimentation of in-Band Full-Duplex Underwater Acoustic Communications With a Receiving Array

et al. 2023

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In-band full-duplex (IBFD) communications is a promising technique to achieve spectral-efficient communication in the underwater environment. To achieve IBFD underwater communications, suppression of self-interference (SI) is a prerequisite. In this paper, SI suppression using physical separation and digital SI cancellation is investigated under different transmitter-receiver geometries. An iterative IBFD receiver combining joint channel estimation, SI cancellation, and multichannel decision feedback equalizer is developed. Due to the potential deterioration of the channel estimation accuracy, a digital SI cancellation control mechanism is used to regulate the suppression process. The feasibility of coherent IBFD underwater acoustic communications was tested in a lake environment. The two SI suppression methods, the SI cancellation control mechanism, and the receiver performance were evaluated using the experimental measurements. A bit error rate (BER) in the order of 10 −2 was achieved at the range of 80 m for IBFD communications. INDEX TERMSIn-band full-duplex, iterative receiver, self-interference cancellation, underwater acoustic communications.

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A time-reversal based digital cancelation scheme for in-band full-duplex underwater acoustic systems

Cited by 14 publications

References 9 publications

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

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

Self-Interference Channel Estimation Algorithm Based on Maximum-Likelihood Estimator in In-Band Full-Duplex Underwater Acoustic Communication System

Lake Experimentation of in-Band Full-Duplex Underwater Acoustic Communications With a Receiving Array

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