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

Monire Faridzadeh, Asghar Gholami, Zabih Ghassemlooy, Sujan Rajbhandari

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

8 Citations (Scopus)


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 σ2l = {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 σ2l >; 0.3.
Original languageEnglish
Title of host publication16th European Conference on Networks and Optical Communications : NOC 2011, 20th -22nd July 2011, Newcastle-upon-Tyne, UK
EditorsZabih Ghassemlooy, Wai Ng, Sujan Rajbhandari
Place of PublicationPiscataway, NJ
ISBN (Print)978-1612847535
Publication statusPublished - 2011


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