Related Experiment Video
Updated: Feb 10, 2026
12:14
A Duplex Digital PCR Assay for Simultaneous Quantification of the Enterococcus spp. and the Human Fecal-associated HF183 Marker in Waters
Published on: March 9, 2016
10.3K
Digital Self-Interference Cancellation for Asynchronous In-Band Full-Duplex Underwater Acoustic Communication
Gang Qiao1,2,3, Shuwei Gan4,5,6, Songzuo Liu7,8,9
1Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001,China. qiaogang@hrbeu.edu.cn.
Sensors (Basel, Switzerland)
|May 26, 2018
Summary
This study introduces a digital self-interference (SI) cancellation algorithm for asynchronous in-band full-duplex (IBFD) underwater acoustic (UWA) systems. The novel Over-Parameterization based Recursive Least Squares (OPRLS) algorithm effectively mitigates nonlinear distortion and improves UWA network throughput.
Area of Science:
- Underwater Acoustic (UWA) Communication
- Signal Processing
- Wireless Networking
Background:
- In-band full-duplex (IBFD) communication is crucial for enhancing underwater acoustic (UWA) network throughput.
- Self-interference (SI) is a major challenge in IBFD-UWA systems.
- Asynchronous communication and nonlinear power amplifier (PA) distortion complicate SI cancellation in UWA environments.
Purpose of the Study:
- To develop a digital SI cancellation algorithm for asynchronous IBFD-UWA communication systems.
- To address the challenges of asynchronous signal models and PA-induced nonlinear distortion.
- To improve the efficiency and feasibility of SI cancellation in practical UWA networks.
Main Methods:
- Modeling asynchronous IBFD-UWA signals with PA nonlinear distortion.
- Utilizing the non-overlapping region between SI and the intended signal for channel estimation.
- Proposing an Over-Parameterization based Recursive Least Squares (OPRLS) algorithm for nonlinear SI channel estimation.
- Introducing a sparse-constrained OPRLS to reduce the required non-overlapping region length.
Main Results:
- The proposed OPRLS algorithm effectively estimates the nonlinear SI channel.
- The sparse-constrained OPRLS reduces the dependency on the non-overlapping region size.
- Simulations and pool experiments validate the efficiency of the digital SI cancellation scheme.
Conclusions:
- The developed digital SI cancellation algorithm successfully mitigates self-interference in asynchronous IBFD-UWA systems.
- The OPRLS algorithm, particularly with sparse constraints, offers a practical solution for nonlinear distortion challenges.
- This research contributes to advancing the performance and throughput of UWA networking.
Related Concept Videos
02:18Interference and Diffraction
52.5K
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
52.5K
01:30Social Foundations of Self IV: Self in Digital Communication
210
Since the early 2000s, computer-mediated communication (CMC) has grown rapidly, playing a crucial role in self-development. A key distinction between CMC and real-life interactions is the lack of a physically present partner. This absence makes non-verbal cues such as facial expressions, body language, and paralinguistic signals unavailable in CMC platforms like email, instant messaging, or social media. The lack of these cues can create ambiguity and complicate how feedback is interpreted.The...
210
02:35Band Theory
17.3K
When two or more atoms come together to form a molecule, their atomic orbitals combine and molecular orbitals of distinct energies result. In a solid, there are a large number of atoms, and therefore a large number of atomic orbitals that may be combined into molecular orbitals. These groups of molecular orbitals are so closely placed together to form continuous regions of energies, known as the bands.
The energy difference between these bands is known as the band gap.
Conductor, Semiconductor,...
The energy difference between these bands is known as the band gap.
Conductor, Semiconductor,...
17.3K
01:03Communication
8.8K
Communication between two animals occurs when one animal transmits an information signal that causes a change in the animal that receives the information. Organisms communicate with one another in a host of different ways. Signals can be auditory, chemical, visual, tactile, or a combination of these. Communication is a critical behavioral adaptation that promotes survival, growth, and reproduction.
8.8K
01:28Communication
11.4K
Sharing information, concepts, and emotions to foster mutual understanding is communication. The sender, recipient, and transaction must be considered in this manner. The sender is the person who shares the message, the recipient is the person who receives and understands the message, and the transaction is the method used to deliver the message and the variables that affect the communication's context and surroundings. The nurse-client connection is built on therapeutic communication.
11.4K
01:23RNA Interference
28.2K
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
28.2K