Performance Optimization of 2-PolSK in UV Scattering Communication Channels

In this letter, we investigate the performance improvement of binary polarization shift keying (2-PolSK) transmission over the ultraviolet scattering channels. To this end, we statistically characterize the cross-polarization discrimination (XPD) of the channel when horizontal and vertical polarization are individually transmitted. The received polarization is characterized in terms of its statistical moments and approximating it to be truncated Gaussian distributed. To enhance 2-PolSK error performance, we propose XPD-dependent optimal thresholding. Electric field Monte Carlo (EFMC) simulation is used to realize the channel. The bit error rate results show a significant improvement through our proposed approach as compared to the conventional symmetric thresholding-based signal reception.