Title :
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
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;
Journal_Title :
Communications, China
DOI :
10.1109/CC.2015.7084361
