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| 大气湍流对APD直接检测接收机抗噪声性能影响 | |
| 引用本文： | 张铁英,王庆官,史建国. 大气湍流对APD直接检测接收机抗噪声性能影响[J]. 海军航空工程学院学报, 2011, 26(1): 15-19 |
| 作者姓名： | 张铁英 王庆官 史建国 |
| 作者单位： | 海军航空工程学院七系,山东,烟台,264001 |
| 摘 要： | 针对以往分析湍流信道对系统抗噪声性能影响的不足,给出了一种基于APD直接检测接收机的湍流噪声的处理方法.在APD直接检测接收机模型的基础上,推导了其信噪比和曼彻斯特编码系统的差错概率,并详细分析了湍流对接收机的抗噪声性能影响.结果表明,增大接收天线孔径可以减弱湍流的影响,但在天线孔径较小时,增加发射功率并不能有效地提高... |
| 关 键 词： | 无线光通信 直接检测 湍流 信噪比 误码率 |
Influences of Atmosphere Turbulence to Noise Rejection for Direct Detection Using Avalanche Photodiode |
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| ZHANG Tie-ying,WHANG Qing-guan and SHI Jian-guo. Influences of Atmosphere Turbulence to Noise Rejection for Direct Detection Using Avalanche Photodiode[J]. Journal of Naval Aeronautical Engineering Institute, 2011, 26(1): 15-19 | |
| Authors: | ZHANG Tie-ying WHANG Qing-guan SHI Jian-guo |
| Affiliation: | (No.7Department, NAAU, Yantai Shandong264001, China) |
| Abstract: | A method to deal with noise caused by atmosphere turbulence was proposed for direct detection （DD） using avalanche photodiode （APD） in respect that limitation of some documents appeared. After giving the mode of DD-receiver, its signal-to-noise ratio （SNR） and code error rate of Manchester system were derived and analyzed influences of turbulence to DD-receiver using APD. Numerical results showed that system reliability only enhanced a little with increase of transmit power under small antenna dimension. For an antenna, its smoothing effect to large scintillation index is better than to small scintillation index. The method in this paper could help to estimate the error performance and power requirement for optical communication link through atmosphere turbulence. |
| Keywords: | optical wireless communication direct detection turbulence signal-to-noise ratio （SNR） code error rate |
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