| 圆偏振移位键控的星地激光通信误码率研究 |
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| 引用本文： | 林日钊,傅忠谦,李永亮,张虎,王剑亭. 圆偏振移位键控的星地激光通信误码率研究[J]. 中国激光, 2011, 0(11) |
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| 作者姓名： | 林日钊 傅忠谦 李永亮 张虎 王剑亭 |
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| 作者单位： | 中国科学技术大学信息科学技术学院;中山职业技术学院计算机工程系; |
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| 基金项目： | 中国科学院知识创新工程三期项目(KGCX3-SYW-407-03-10)资助课题 |
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| 摘 要： | 光束的偏振特性在大气传输中变化比较小,因而偏振移位键控调制具有较高的可靠性。以星地激光通信为背景,研究星地激光通信链路的圆偏振移位键控调制的误码率性能。考虑到大气湍流的影响,采用Hufnagle-Valley大气折射结构常数模型,在Rytov方差分别为0.082,1.11这两种弱、强湍流起伏条件下,通过对比圆偏振移位键控调制和直接检测开-关键控调制的误码率,得到了同等湍流起伏条件下前者误码率性能比后者突出的结论。特别是Rytov方差为0.082时,要达到10-7的误码率,它们对信噪比的要求分别是21.65dB和30dB,圆偏振移位键控调制对信噪比的要求降低了8.35dB。此外,还分析了近地面折射结构常数、天顶角和地面风速这3个因素对误码率的影响,仿真结果表明圆偏振移位键控调制的误码率比直接检测开-关键控调制最少降低2个数量级。因此,圆偏振移位键控调制在未来星地激光通信中有着广阔的发展前景。
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| 关 键 词： | 光通信 星地激光通信 圆偏振移位键控 大气湍流 误码率 |
Research of Bit Error Rate for Satellite-to-Ground Laser Communication Using Circle Polarization Shift Keying Modulation |
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| Lin Rizhao Fu Zhongqian Li Yongliang Zhang Hu Wang Jianting School of Information Science , Technology,University of Science , Technology of China,Hefei,Anhui ,China. Research of Bit Error Rate for Satellite-to-Ground Laser Communication Using Circle Polarization Shift Keying Modulation[J]. Chinese Journal of Lasers, 2011, 0(11) |
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| Authors: | Lin Rizhao Fu Zhongqian Li Yongliang Zhang Hu Wang Jianting School of Information Science Technology University of Science Technology of China Hefei Anhui China |
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| Affiliation: | Lin Rizhao1 Fu Zhongqian1 Li Yongliang2 Zhang Hu1 Wang Jianting1 1School of Information Science and Technology,University of Science and Technology of China,Hefei,Anhui 230027,China 2Department of Computer Engineering,Zhongshan Polytechnic,Zhongsan,Guangdong 528404,China |
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| Abstract: | The polarization shift keying modulation has high reliability since the polarization properties of beam light change relatively small while propagating through the atmoshpere.The bit error rate(BER) performace of the circle polarization shift keying modulation in the satellite-to-ground laser communication is studied.Considering the effects of the atmospheric turbulence,the Hufnagle-Valley refractive index structure constant mode is adopted.By comparing the BER performace of the circle polarization shift ke... |
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| Keywords: | optical communications satellite-to-ground laser communication circle polarization shift keying modulation atmospheric turbulence bit error rate |
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