BPSK-SIM- PPM modulation for free space optical communications

Author

Faridzadeh, M. ; Gholami, Amir ; Ghassemlooy, Zabih ; Gatri, A.

Author_Institution

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

fYear

2014

fDate

9-11 Sept. 2014

Firstpage

794

Lastpage

798

Abstract

In this paper a hybrid PPM-BPSK modulation scheme is proposed. The numerical simulation results for the bit error rate (BER) performance of the PPM-BPSK modulation scheme in the lognormal atmospheric channel for a range of turbulence variance is presented. Results are compared with the BPSK-subcarrier intensity modulation (SIM) and 4-PPM, which shows the performance of the hybrid PPM-BPSK scheme, is superior to the BPSK while having the same bandwidth requirement. However, for all level of turbulence the performance of the proposed hybrid PPM-BPSK is deficient to the PPM scheme. Moreover the paper also presents the experimental results for 4PPM and BPSK (SIM).

Keywords

error statistics; intensity modulation; optical links; optical modulation; phase shift keying; pulse position modulation; BER; BPSK-subcarrier intensity modulation; bit error rate performance; free space optical communications; hybrid BPSK-SIM-PPM modulation; lognormal atmospheric channel; pulse-position modulation modulation; turbulence variance; Binary phase shift keying; Bit error rate; Optical fiber communication; Optical modulation; Optical transmitters; Signal to noise ratio; 4PPM; BPSK-SIM modulation; Log normal; PPM_BPSK;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications (IST), 2014 7th International Symposium on

Conference_Location

Tehran

Print_ISBN

978-1-4799-5358-5

Type

conf

DOI

10.1109/ISTEL.2014.7000811

Filename

7000811