A novel non-equidifferent optical APPM mapping scheme for strong turbulent atmospheric channel

Author

Wang Kaimin ; Zhang Lijia ; Liu Bo ; Zhang Qi ; Tian Qinghua ; Xu Peng ; Xin Xiangjun

Author_Institution

State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun. (BUPT), Beijing, China

Volume

12

Issue

3

fYear

2015

fDate

Mar. 2015

Firstpage

35

Lastpage

42

Abstract

An optical Amplitude and Pulse Position Modulation (APPM) mapping scheme for strong turbulent atmospheric channel is proposed to optimize Bit Error Rate (BER) performance. In this scheme, a non-equidifferent amplitude series is designed based on quantitative BER analysis of the specific A×M APPM demapping procedures containing time slot selection and amplitude decision in selected time slot, which are different from traditional ones. Simulation results of 4×4, 4×8 and 4×16 APPM show 4, 3.4 and 6.9 dB SNR gain against traditional APPM scheme respectively. Thus significant BER performance improvement is achieved which helps to enhance reliability of free-space optical communication systems.

Keywords

amplitude modulation; atmospheric turbulence; decision theory; error statistics; optical communication; optical modulation; optimisation; pulse position modulation; telecommunication network reliability; A×M APPM demapping procedures; SNR gain; amplitude decision; bit error rate; free-space optical communication systems; nonequidifferent amplitude series; nonequidifferent optical APPM mapping scheme; optical amplitude and pulse position modulation mapping scheme; quantitative BER analysis; signal-to-noise ratio; time slot selection; turbulent atmospheric channel; Adaptive optics; Atmospheric modeling; Bit error rate; Demodulation; Optical fiber communication; Optical pulses; APPM; Mapping; Turbulent atmospheric channel;

fLanguage

English

Journal_Title

Communications, China

Publisher

ieee

ISSN

1673-5447

Type

jour

DOI

10.1109/CC.2015.7084361

Filename

7084361