Hybrid PPM-BPSK subcarrier intensity modulation for free space optical communications

Author

Faridzadeh, M. ; Gholami, A. ; Ghassemlooy, Z. ; Rajbhandari, S.

Author_Institution

Dept. of ECE, Isfahan Univ. of Technol., Isfahan, Iran

fYear

2011

fDate

20-22 July 2011

Firstpage

36

Lastpage

39

Abstract

In this paper, a new hybrid pulse position modulation - binary phase shift keying subcarrier intensity modulation (PPM-BPSK-SIM) modulation scheme for free space optical (FSO) communications is presented. The theoretical analysis error probability of the PPM-BPSK-SIM in turbulence atmospheric channel is carried out and verified using computer simulation. The performance of PPM-BPSK-SIM is compared with PPM and BPSK-SIM in a lognormal atmospheric channel for a range of turbulence variance σ²_l = {0, 0.1, 0.3, 0.5 and 1.2}. The results show that the performance of PPM-BPSK-SIM is superior to BPSK-SIM for all turbulence levels, while its performance becomes better than 2-PPM for σ²_l >; 0.3.

Keywords

error statistics; optical communication; phase shift keying; PPM-BPSK-SIM; binary phase shift keying subcarrier intensity modulation; computer simulation; error probability; free space optical communication; hybrid PPM-BPSK subcarrier intensity modulation; hybrid pulse position modulation; lognormal atmospheric channel; turbulence atmospheric channel; turbulence levels; turbulence variance; Atmospheric modeling; Binary phase shift keying; Bit error rate; Optical fiber communication; Optical modulation; Optical pulses;

fLanguage

English

Publisher

ieee

Conference_Titel

Networks and Optical Communications (NOC), 2011 16th European Conference on

Conference_Location

Newcastle-Upon-Tyne

Print_ISBN

978-1-61284-753-5

Electronic_ISBN

978-1-86135-373-3

Type

conf

Filename

5996232