Improving the optical link for UVLC using MIMO technique

Abstract

This paper proposed a theoretical treatment to study underwater wireless optical communications (UWOC) system with different modulation schemes by multiple input-multiple output (MIMO) technology in coastal water. MIMO technology provides high-speed data rates with longer distance link. This technique employed to assess the system by BER, Q. factor and data rate under coastal water types. The reliability of the system is examined by the techniques of 1Tx/1Rx, 2Tx/2Rx, 3Tx/3Rx and 4Tx/4Rx. The results shows the proposed technique by MIMO can get the better performance compared with the other techniques in terms of BER. Theoretical results were obtained to compare between PIN and APD photodetectors. Besides, 32-PPM is robust and considers a suitable modulation scheme for obtaining the low BER and high Q. factor in LoS scenarios.

A Comprehensive Survey on MIMO Visible Light Communication: Current Research, Machine Learning and Future Trends

“…Simulation results show a 12 dB gain as compared to non-imaging MIMO in BER performance. The study in [ 139 ] experimented with different modulation schemes in MIMO communication in coastal water. A comprehensive study was performed by Jamali et al [ 140 ] for VLC MIMO communication considering channel degrading effects, including absorption, scattering, and turbulence-included fading.…”