Abstract
With the increase in free-space optical communication distance and link attenuation, photon-counting communication based on a single photon detector will be the development trend in the future. In this paper, we use a single-pixel single photon avalanche diode (SPAD) detector to study the bit error rate (BER) performance of photon counting communication. As the single-pixel SPAD cannot distinguish the number of photons in a single detection event, we theoretically derive the (BER) model of a pulse position modulation (PPM) communication system based on a single-pixel SPAD detector. Then, the binary asymmetric channel (BAC) model is adopted to modify the channel log-likelihood in Serially Concatenated Pulse Position Modulation (SCPPM) decoding. Research results show that, when the BER is 10−6 , the photon efficiency can reach 1.6 photon per bit (PPB) in the modified BAC scheme with 0.1 photon/slot noise intensity, which is 28.6% better than the photon efficiency of 2.24 PPB in the unmodified Poisson channel scheme.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.