QPSK调制光通信中混合噪声的功率谱性能与误码率

陈牧; 柯熙政

doi:10.3788/IRLA201789.1022005

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QPSK调制光通信中混合噪声的功率谱性能与误码率

陈牧, 柯熙政

文章导航 > 红外与激光工程 > 2017 > 46(10): 1022005-1022005(6)

陈牧, 柯熙政. QPSK调制光通信中混合噪声的功率谱性能与误码率[J]. 红外与激光工程, 2017, 46(10): 1022005-1022005(6). doi: 10.3788/IRLA201789.1022005

引用本文:

陈牧, 柯熙政. QPSK调制光通信中混合噪声的功率谱性能与误码率[J]. 红外与激光工程, 2017, 46(10): 1022005-1022005(6). doi: 10.3788/IRLA201789.1022005

Chen Mu, Ke Xizheng. Power spectrum performance and bit error rate of mixed noise in QPSK modulated optical communication[J]. Infrared and Laser Engineering, 2017, 46(10): 1022005-1022005(6). doi: 10.3788/IRLA201789.1022005

Citation:

Chen Mu, Ke Xizheng. Power spectrum performance and bit error rate of mixed noise in QPSK modulated optical communication[J]. Infrared and Laser Engineering, 2017, 46(10): 1022005-1022005(6). doi: 10.3788/IRLA201789.1022005

QPSK调制光通信中混合噪声的功率谱性能与误码率

doi: 10.3788/IRLA201789.1022005

陈牧,
柯熙政

1.
西安理工大学自动化与信息工程学院,陕西西安 710048

基金项目:

国家自然科学基金（61377080）;陕西省重点产业创新链项目（2017ZDCXL-GY-06-01）

详细信息

作者简介:
陈牧(1989-),男,博士生,主要从事大气光通信中噪声模型方面的研究。Email:chenmuaj@163.com

中图分类号: TN929.12

Power spectrum performance and bit error rate of mixed noise in QPSK modulated optical communication

Chen Mu,
Ke Xizheng

1.
School of Automation and Information Engineering,Xi'an University of Technology,Xi'an 710048,China

摘要: 研究了QPSK副载波调制下乘性噪声与加性噪声对接收端星座图影响。基于Gamma-Gamma信道模型，分析了乘性噪声和加性噪声影响下系统的接收星座图。通过仿真实验计算了混合噪声情况下的星座图分布以及接收端功率谱密度。讨论了混合噪声条件下，不同能见度、传输距离对系统误码率的影响。结果表明：随着湍流强度的增强，接收端功率谱存在明显的展宽迹象；不同加性噪声条件下，当能见度小于传输距离时，气溶胶粒子散射为影响通信的主要因素。不同乘性噪声条件下，当能见度处于0.5~1.5 km时，乘性噪声会影响接收光强，进一步增大系统误码率。文中工作对真实环境下降低无线激光通信的误码率和提高通信质量有重要意义。
- 激光通信 /
- QPSK调制 /
- 混合噪声 /
- 功率谱密度 /
- 误码率
Abstract: The received constellation effect of QPSK subcarrier modulation by multiplicative noise and additive noise was studied. A theoretical model of laser communication system was constructed, the received constellation of the system under multiple noise and additive noise was derived. The constellation distribution and the power spectral density of the receiver were calculated under mixed noise environment. The influence of system bit error rate in different visibilities and transmission was analyzed in detail under mixed noise environment. The results show that with the change of turbulence intensity, the receiver power spectrum has obvious broadening. When the visibility is less than the transmission distance, the atmospheric aerosol scattering is the main factor affecting the communication under different additive noise conditions; when visibility is 0.5 km to 1.5 km, the passenger noise will affect the reception light and increase the system error rate under different multiplicative noise conditions. The proposed works are very important for reducing the bit error rate of laser communication and improving the communication quality in the real environment.
- laser communication /
- QPSK modulation /
- mixed noise /
- PSD /
- BER

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QPSK调制光通信中混合噪声的功率谱性能与误码率

doi: 10.3788/IRLA201789.1022005

陈牧,
柯熙政

1. 西安理工大学自动化与信息工程学院,陕西西安 710048

作者简介:
陈牧(1989-),男,博士生,主要从事大气光通信中噪声模型方面的研究。Email:chenmuaj@163.com

收稿日期: 2017-02-15
修回日期: 2017-04-23
刊出日期: 2017-10-25

基金项目:

国家自然科学基金（61377080）;陕西省重点产业创新链项目（2017ZDCXL-GY-06-01）

中图分类号: TN929.12

关键词:

摘要: 研究了QPSK副载波调制下乘性噪声与加性噪声对接收端星座图影响。基于Gamma-Gamma信道模型，分析了乘性噪声和加性噪声影响下系统的接收星座图。通过仿真实验计算了混合噪声情况下的星座图分布以及接收端功率谱密度。讨论了混合噪声条件下，不同能见度、传输距离对系统误码率的影响。结果表明：随着湍流强度的增强，接收端功率谱存在明显的展宽迹象；不同加性噪声条件下，当能见度小于传输距离时，气溶胶粒子散射为影响通信的主要因素。不同乘性噪声条件下，当能见度处于0.5~1.5 km时，乘性噪声会影响接收光强，进一步增大系统误码率。文中工作对真实环境下降低无线激光通信的误码率和提高通信质量有重要意义。