Pulse-position modulation (PPM) is a form of signal modulation in which M message bits are encoded by transmitting a single pulse in one of 2M possible required time shifts. It is primarily useful for optical communications systems, which tend to have little or no multipath interference. PPM is currently being used in fiber-optic communications, deep-space communications, and continues to be used in R/C systems. In this paper, we simulate a relatively complete process of PPM transmission. We generate the basic form of PPM using random sequences and then we visualize the impact of AWGN on the signal on the PPM real plain. Then we use the minimum distance discrimination method to demodulate the signal. Details about errors are collected as well to illustrate the point. At last, we imitate the PAM system to calculate the BER.

Date Published: 15 July 2022
PDF: 8 pages
Proc. SPIE 12258, International Conference on Neural Networks, Information, and Communication Engineering (NNICE 2022), 122582R (15 July 2022); doi: 10.1117/12.2640765

Published in SPIE Proceedings Vol. 12258:
International Conference on Neural Networks, Information, and Communication Engineering (NNICE 2022)
Rajeev Tiwari, Editor(s)