自由空间光通信中联合DAPPM与Turbo码的研究

2019 IEEE 19th International Conference on Communication Technology (ICCT) Pub Date : 2019-10-01 DOI:10.1109/ICCT46805.2019.8947108

Fei Yang, Xin Ming, Yongzhe Xu, Ziqiang Huang

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引用次数: 0

摘要

为了提高自由空间光通信(FSO)系统的频带利用率，减轻大气湍流噪声对系统的负面影响，提出了一种基于Turbo编码的差分幅值脉冲位置调制(DAPPM)方法。首先，介绍了Gamma-Gamma湍流通道模型。在此基础上，分析了DAPPM的符号结构、频带特性、调制解调方法。最后，对基于Turbo编码和DAPPM的FSO系统进行了分析，并利用MATLAB仿真软件进行了数值仿真。结果表明，在DAPPM光通信系统中引入Turbo编码技术可以较好地处理信道噪声的影响，降低系统误码率。

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Research on Unite DAPPM with Turbo Code in Free Space Optical Communication

In order to improve the utilization of frequency band in Free Space Optical communication (FSO) system and mitigate the negative effects of atmospheric turbulence noise on the system, a differential amplitude pulse-position modulation (DAPPM) based on Turbo coding is put forward. Firstly, the Gamma-Gamma turbulence channel model is introduced. Based on this, the symbolic structure, frequency band characteristics, modulation and demodulation method of DAPPM are analyzed. Finally, the FSO system based on Turbo coding and DAPPM is analyzed and numerical simulation is carried out using MATLAB simulation software. The results show that the introduction of Turbo coding technology in DAPPM optical communication system can deal with the influence of channel noise and reduce the system error rate better.

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2019 IEEE 19th International Conference on Communication Technology (ICCT)

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