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Experimental investigation on backscattering interference cancellation for full-duplex UOWC based on time-reversal preprocessing. | LitMetric

AI Article Synopsis

  • - The study explores a new underwater optical wireless communication (UOWC) system that operates in full duplex, which can improve data transfer efficiency and simplify connections, but faces challenges from self-interference caused by backscattering.
  • - The researchers develop a digital-domain backscattering interference cancellation (BIC) algorithm that uses time-reversal preprocessing to combat these interference issues in the communication process.
  • - Experimental tests demonstrate that the proposed BIC algorithm significantly improves communication performance, particularly in reducing bit error rates across various underwater conditions.

Article Abstract

A co-frequency and full-duplex (FD) underwater optical wireless communication (UOWC) system has the potential to significantly enhance spectral efficiency, reduce complexity, and further facilitate UOWC networking. However, the inevitable performance degradation due to self-interference introduced by backscattering presents a significant challenge. In this paper, we first experimentally explore the inherent characteristics of the underwater backscattering channel. Subsequently, we propose a digital-domain backscattering interference cancellation (BIC) algorithm for FD-UOWC systems, incorporating a time-reversal preprocessing. We then experimentally investigate the communication performance of an FD-UOWC system to verify the feasibility of the proposed BIC algorithm under different channel conditions. The experimental results validate the effectiveness of the proposed method, yielding substantial enhancements in bit error rate performance across diverse scenarios.

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Source
http://dx.doi.org/10.1364/JOSAA.516949DOI Listing

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