基于遍历微小单元法非直视非共面紫外光通信信道容量分析

宋鹏; 苏彩霞; 赵太飞; 陈锦妮; 朱磊; 张晓丹

doi:10.11959/j.issn.1000-436x.2019103

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基于遍历微小单元法非直视非共面紫外光通信信道容量分析

学术论文 | 更新时间：2024-06-05

- 基于遍历微小单元法非直视非共面紫外光通信信道容量分析
- Channel capacity analysis of non-line-of-sight ultraviolet communication in noncoplanar geometry based on traversing tiny unit method
- 通信学报 2019年40卷第5期页码：144-152
- 作者机构：
  
  1. 西安工程大学电子信息学院，陕西西安 710048
  2. 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：
  
  [ "宋鹏（1976- ），男，陕西大荔人，博士，西安工程大学副教授，主要研究方向为无线光通信、光信号接收与处理、嵌入式技术等。" ]
  [ "苏彩霞（1989- ），女，河南西华人，西安工程大学硕士生，主要研究方向为紫外光通信、移动自组网定位。" ]
  [ "赵太飞（1978- ），男，河南浚县人，博士，西安理工大学教授，主要研究方向为紫外光通信技术、路由技术、网络抗毁性技术、物联网技术等。" ]
  [ "陈锦妮（1980- ），女，陕西西安人，博士，西安工程大学讲师，主要研究方向为大气激光通信技术。" ]
  [ "朱磊（1979- ），男，四川绵阳人，博士，西安工程大学教授，主要研究方向为信号与信息处理、检测技术、控制工程、嵌入式系统应用。" ]
  [ "张晓丹（1981- ），女，辽宁葫芦岛人，博士，西安工程大学副教授，主要研究方向为波动信号处理及成像、图像处理。" ]
- 基金信息：
  
  国家自然科学基金-中国民航局民航联合研究基金资助项目(U1433110);陕西省科技厅自然科学基础研究计划基金资助项目(2018JQ4016);西安市科技局科技指导基金资助项目(201805030YD8CG14-9);西安工程大学博士科研启动基金资助项目(BS201810)
- DOI：10.11959/j.issn.1000-436x.2019103
  中图分类号： TN929.12
- 网络出版日期：2019-05，
  
  纸质出版日期：2019-05-25
- 稿件说明：
移动端阅览
宋鹏, 苏彩霞, 赵太飞, 等. 基于遍历微小单元法非直视非共面紫外光通信信道容量分析[J]. 通信学报, 2019,40(5):144-152.

Peng SONG, Caixia SU, Taifei ZHAO, et al. Channel capacity analysis of non-line-of-sight ultraviolet communication in noncoplanar geometry based on traversing tiny unit method[J]. Journal on communications, 2019, 40(5): 144-152.
宋鹏, 苏彩霞, 赵太飞, 等. 基于遍历微小单元法非直视非共面紫外光通信信道容量分析[J]. 通信学报, 2019,40(5):144-152. DOI： 10.11959/j.issn.1000-436x.2019103.

Peng SONG, Caixia SU, Taifei ZHAO, et al. Channel capacity analysis of non-line-of-sight ultraviolet communication in noncoplanar geometry based on traversing tiny unit method[J]. Journal on communications, 2019, 40(5): 144-152. DOI： 10.11959/j.issn.1000-436x.2019103.

摘要

信道容量反映了系统无差错传输信息的能力。基于遍历微小单元法求出系统的路径损耗和脉冲响应，然后对脉冲响应采样序列进行离散傅里叶变换，得到系统的频率响应，计算出系统的 3 dB 带宽。考虑信号光引起的散粒噪声，根据量子极限法求出系统的信噪比，进而用香农公式仿真分析非直视非共面紫外光通信系统信道容量和收发端几何参数之间的关系。结果表明，信道容量随着接收端偏轴角和通信距离的增大而减小，当收发仰角小于 40°时，随着收发仰角增大，信道容量快速减小，并且发射端仰角对信道容量的影响更显著；当发散角增大时，系统信道容量几乎不变；而当视场角增大时，系统信道容量增大。

Abstract

Channel capacity reflects the ability of the system to transmit information without errors.The path loss and impulse response of the system were calculated based on traversing tiny unit method

and then the frequency response of the system was obtained by the discrete Fourier transform of the impulse response sampling sequence

and the 3 dB bandwidth of the system was calculated.Considering the shot noise caused by signal light

the signal-to-noise ratio of the system was obtained according to the quantum limit method

and then the relationship between the channel capacity and the geometric parameters of transmitter and receiver in non-line-of-sight noncoplanar ultraviolet communication system were simulated and analyzed by Shannon formula.The results show that the channel capacity decreases with the increase of the off axis angle and the communication distance.When the elevation angles of transmitter and receiver are less than 40°

the channel capacity decreases rapidly with the increase of the elevation angles of transmitter and receiver

and the transmitter elevation angle has a great influence on the channel capacity.The system channel capacity is almost constant with the increase of divergence angle

and the larger the receiver field of view angle

the greater the system channel capacity.

关键词

Keywords

references

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