TY - JOUR
T1 - Performance analysis of FSO system with different modulation schemes over gamma-gamma turbulence channel
AU - Zhang, Haiguang
AU - Tang, Xuan
AU - Lin, Bangjiang
AU - Zhou, Zhenlei
AU - Lin, Chun
AU - Chaudhary, Sushank
AU - Ghassemlooy, Zabih
A2 - Li, Zhaohui
N1 - Copyright notice format:
Copyright 2019 (year) Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
PY - 2019/2/14
Y1 - 2019/2/14
N2 - Free-space optical communications (FSO) suffers from irradiance fluctuation caused by atmospheric turbulence, which results in optical power loss and consequently decreased signal-to-noise ratio (SNR). The error performances of the FSO based on On-Off Keying (OOK), Differential Phase Shift Keying (DPSK), and Binary Phase Shift Keying (BPSK) schemes in a turbulent atmosphere are presented. The received irradiance after propagating the atmosphere is modeled using the gamma-gamma distribution to evaluate the system error performance in turbulence regimes from weak to strong. The results show that, to obtain a BER of 10-6 at weak turbulence regime, ~15 dB and ~18 dB SNRs are required for BPSK and DPSK, respectively. However, for OOK with a fixed threshold of 0.5 under the same channel condition, OOK reaches an error floor greater than 10-3. The values of SNR required to achieve the same BER increase as the turbulence strength increase to moderate and strong regimes.
AB - Free-space optical communications (FSO) suffers from irradiance fluctuation caused by atmospheric turbulence, which results in optical power loss and consequently decreased signal-to-noise ratio (SNR). The error performances of the FSO based on On-Off Keying (OOK), Differential Phase Shift Keying (DPSK), and Binary Phase Shift Keying (BPSK) schemes in a turbulent atmosphere are presented. The received irradiance after propagating the atmosphere is modeled using the gamma-gamma distribution to evaluate the system error performance in turbulence regimes from weak to strong. The results show that, to obtain a BER of 10-6 at weak turbulence regime, ~15 dB and ~18 dB SNRs are required for BPSK and DPSK, respectively. However, for OOK with a fixed threshold of 0.5 under the same channel condition, OOK reaches an error floor greater than 10-3. The values of SNR required to achieve the same BER increase as the turbulence strength increase to moderate and strong regimes.
U2 - 10.1117/12.2519711
DO - 10.1117/12.2519711
M3 - Conference article
SN - 0277-786X
VL - 11048
JO - Proceedings of SPIE
JF - Proceedings of SPIE
T2 - 17th International Conference on Optical Communications and Networks (ICOCN2018)
Y2 - 16 November 2018 through 19 November 2018
ER -