Performance analysis of BPPM and M-ary PPM in free-space optical communication systems under gamma-gamma distribution using APD and PIN

Author

Islam, M.A. ; Chowdhury, Ashraful Bari

Author_Institution

Dept. of EEE, Ahsanullah Univ. of Sci. & Technol., Dhaka, Bangladesh

fYear

2014

fDate

20-22 Dec. 2014

Firstpage

25

Lastpage

28

Abstract

Free-space optical (FSO) communication offers highly directional, high bandwidth communication channels, which is why it is often used in digital communication systems. However, atmospheric turbulence has a voluminous degradation in the performance of FSO communication system. Therefore, different modulation techniques are introduced to improve the performance of the FSO communication systems. In this paper, the modulation schemes considered for the proposed FSO system, are binary pulse position modulation (BPPM) and M-ary pulse position modulation (M-ary PPM). The channel fading is characterized using gamma-gamma distribution. APD and PIN photodiode are used as photodetectors. Performance of the FSO systems has been compared in terms of their bit error rates (BERs). The results obtained in the paper show the suitability of BPPM over M-ary PPM for both photodetectors and also indicate the suitability of APD over PIN photodiode for the considered modulation techniques.

Keywords

error statistics; fading channels; optical communication; p-i-n photodiodes; pulse position modulation; APD; BER; BPPM; FSO communication; FSO communication system; M-ary PPM; PIN; PIN photodiode; atmospheric turbulence; binary pulse position modulation; bit error rates; digital communication systems; free space optical communication systems; gamma-gamma distribution; performance analysis; photodetectors; Atmospheric modeling; Bit error rate; Modulation; Noise; Photodetectors; Photonics; Receivers; Avalanche photodiode (APD); Bit error rate (BER); Free-space optics (FSO); Gamma-gamma distribution model; M-ary pulse position modulation (M-ary PPM);

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering (ICECE), 2014 International Conference on

Conference_Location

Dhaka

Print_ISBN

978-1-4799-4167-4

Type

conf

DOI

10.1109/ICECE.2014.7026899

Filename

7026899