Abstract
Underwater acoustic communication (UAC) suffers from inter-symbol interference (ISI) due to multipath propagation, multiple-input-multiple-output (MIMO) UAC also suffers from co-channel interference (CCI) among data streams transmitted by different antennas. In this paper, we propose a low-complexity turbo equalization (LCTEQ) scheme for MIMO UAC. Turbo equalization in MIMO systems is applied to combat both inter-symbol interference (ISI) and CCI. The proposed MIMO LCTEQ structure includes a time reverse mirror (TRM), a decision feedback equalizer (DFE) and a SISO mapper/demapper, from the point of view of reducing the number of filters and the length of filters, we embed the time reverse mirror (TRM) technology into the LCTEQ scheme. In a N×M MIMO system, only N filters are needed instead of N×M filters, the residual ISI length is greatly shortened by using the focusing effect of the TRM, so the computational complexity of the TEQ is greatly reduced. The performance of the MIMO LCTEQ has been verified through the undersea experimental in 2019.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
