Tip and tilt-corrected bit error rate improvement of M-ary pulse position-modulated optical wireless communication in the marine atmosphere

Abstract

Tip and tilt corrections are applied to the bit error rate of an M-ary pulse position-modulated optical wireless communication system operating in a turbulent marine atmosphere. For the collimated Gaussian laser beam, using the average received power and power scintillation index at the receiver, the reduction in bit error rate is evaluated. Reduction in bit error rate is defined by the metric of bit error rate with tip and tilt correction normalized by the bit error rate without tip and tilt correction. Reduction in bit error rate is found against the changes in average current gain of the avalanche photodiode, data bit rate, and the M value for various structure constant, link length, and wavelength values. Our results show that the application of tip and tilt corrections effectively reduces the bit error rate of the M-ary pulse position-modulated optical wireless communication system in a turbulent marine atmosphere.