Channel capacity analysis of non-line-of-sight ultraviolet communication in noncoplanar geometry based on traversing tiny unit method

Peng SONG; Caixia SU; Taifei ZHAO; Jinni CHEN; Lei ZHU; Xiaodan ZHANG

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

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Channel capacity analysis of non-line-of-sight ultraviolet communication in noncoplanar geometry based on traversing tiny unit method

Papers | 更新时间：2024-06-05

- Channel capacity analysis of non-line-of-sight ultraviolet communication in noncoplanar geometry based on traversing tiny unit method
- Journal on Communications Vol. 40, Issue 5, Pages: 144-152(2019)
- 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：
- 基金信息：
  
  The Natural Science Foundation of China-Civil Aviation Administration of China Joint Research Fund(U1433110);Shaanxi Natural Science Basic Research Project of Shaanxi Science and Technology Office(2018JQ4016);Science and Technology Project of Xi’an Science and Technology Bureau(201805030YD8CG14-9);Doctor’s Research Start-up Fund of Xi’an Polytechnic University(BS201810)
- DOI：10.11959/j.issn.1000-436x.2019103
  CLC： TN929.12
- Online First：2019-05，
  
  Published：25 May 2019
- 稿件说明：
移动端阅览
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：

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.

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Keywords

references

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