23 December 2013 Analysis of bit error rate for modified T-APPM under weak atmospheric turbulence channel
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Abstract
T-APPM is combined of TCM (trellis-coded modulation) and APPM (Amplitude-Pulse-position modulation) and has broad application prospects in space optical communication. Set partitioning in standard T-APPM algorithm has the optimal performance in a multi-carrier system, but whether this method has the optimal performance in APPM which is a single-carrier system is unknown. To solve this problem, we first research the atmospheric channel model with weak turbulence; then a modified T-APPM algorithm was proposed, compared to the standard T-APPM algorithm, modified algorithm uses Gray code mapping instead of set partitioning mapping; finally, simulate the two algorithms with Monte-Carlo method. Simulation results showed that, when bit error rate at 10-4, the modified T-APPM algorithm achieved 0.4dB in SNR, effectively improve the system error performance.
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Zhe Liu, Zhe Liu, Qi Zhang, Qi Zhang, Yong-jun Wang, Yong-jun Wang, Bo Liu, Bo Liu, Li-jia Zhang, Li-jia Zhang, Kai-min Wang, Kai-min Wang, Fei Xiao, Fei Xiao, Chao-gong Deng, Chao-gong Deng, } " Analysis of bit error rate for modified T-APPM under weak atmospheric turbulence channel ", Proc. SPIE 9043, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, 90430T (23 December 2013); doi: 10.1117/12.2036245; https://doi.org/10.1117/12.2036245
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