非直视紫外光在非共面通信系统中的脉冲展宽效应

大气分子和气溶胶颗粒对紫外光具有强烈的散射作用，以紫外光作为信息载体可实现非直视通信。研究紫外光通信中的脉冲展宽效应对于减小码间干扰、提高系统传输速率具有重要意义。基于蒙特卡罗方法建立了非直视紫外光在非共面通信系统中的多次散射传播模型，利用此模型模拟了发射端出射的紫外光经多次散射到达接收端的全过程。结果表明，非直视紫外光在非共面通信系统中的脉冲响应的半峰全宽随着发射端和接收端仰角、接收端偏转角的增大而增大；多次散射对脉冲展宽的贡献随着发射端和接收端仰角增大而增大；采用开关键控调制方式，系统可传输的最大码速率随发射端和接收端仰角的增大而减小。

Abstract

Atmospheric molecules and aerosol particles have strong scattering effect on ultraviolet (UV), and the non-line-of-sight communication can be realized by using UV as the information carrier. The study of the pulse broadening effect in UV communication is very important for reducing the intersymbol interference and improving the system transmission rate. Based on the Monte Carlo method, the multiple scattering transmission model of the non-line-of-sight UV in the noncoplanar communication system is established. The whole process that UV is emitted from the transmitter and arrives at the receiver after multiple scattering is simulated. The results show that the full width at half-maximum of the impulse response of non-line-of-sight UV in the noncoplanar communication system will increase with the increasing elevation angle of the transmitter, the elevation angle of the receiver, and the deflection angle of the receiver. The contribution of multiple scattering to the pulse broadening increases with the increasing elevation angles of the transmitter and the receiver. The maximum code rate of the system will be reduced with the increasing elevation angle of the transmitter and the receiver by the on-off keying modulation mode.

参考文献

[1] Wang L J, Xu Z Y, Sadler B M. Non-line-of-sight ultraviolet link loss in noncoplanar geometry[J]. Opt Lett, 2010, 35(8): 1263-1265.

[2] 何华, 柯熙政, 赵太飞. 紫外光非视距单次散射链路模型的研究[J]. 光学学报, 2010, 30(11): 3148-3152.

He Hua, Ke Xizheng, Zhao Taifei. Research of ultraviolet non-line-of-sight single scattering link model[J]. Acta Optica Sinica, 2010, 30(11): 3148-3152.

[3] 赵太飞, 金丹, 宋鹏. 无线紫外光非直视通信信道容量估算与分析[J]. 中国激光, 2015, 42(6): 0605001.

Zhao Taifei, Jin Dan, Song Peng. Channel capacity estimation and analysis of wireless ultraviolet non-line-of-sight communication[J]. Chinese J Lasers, 2015, 42(6): 0605001.

[4] Xu Z Y, Sadler B M. Ultraviolet communications: potential and state-of-the-art[J]. IEEE Communications Magazine, 2008, 46(5): 67-73.

[5] 赵太飞, 李琼, 王一丹, 等. 基于粒子群的无线紫外光网络快速信道分配方法[J]. 光学学报, 2014, 34(1): 0106002.

Zhao Taifei, Li Qiong, Wang Yidan, et al. Fast channel allocation method in wireless ultraviolet network based on particle swarm[J]. Acta Optica Sinica, 2014, 34(1): 0106002.

[6] 赵太飞, 张爱利, 金丹, 等. 无线紫外光非视距通信中链路间干扰模型研究[J]. 光学学报, 2013, 33(7): 0706023.

Zhao Taifei, Zhang Aili, Jin Dan, et al. Research on the inter-link interference model in wireless ultraviolet non-line-of-sight communication[J]. Acta Optica Sinica, 2013, 33(7): 0706023.

[7] Reilly D M, Warde C. Temporal characteristics of single-scatter radiation[J]. J Opt Soc Am, 1979, 69(3): 464-470.

[8] Luettgen M R, Shapiro J H, Reilly D M. Non-line-of-sight single-scatter propagation model[J]. J Opt Soc Am A, 1991, 8(12): 1964-1972.

[9] Elshimy M A, Hranilovic S. Non-line-of-sight single-scatter propagation model for noncoplanar geometries[J]. J Opt Soc Am A, 2011, 28(3): 420-428.

[10] Xiao H F, Zuo Y, Wu J, et al. Non-line-of-sight ultraviolet single-scatter propagation model[J]. Opt Express, 2011, 19(18): 17864-17875.

[11] Zuo Y, Xiao H F, Wu J, et al. A single-scatter path loss model for non-line-of-sight ultraviolet channels[J]. Opt Express, 2012, 20(9): 10359-10369.

[12] Xu Z Y, Ding H P, Sadler B M, et al. Analytical performance study of solar blind non-line-of-sight ultraviolet short-range communication links[J]. Opt Lett, 2008, 33(16): 1860-1862.

[13] Wang L J, Xu Z Y, Sadler B M. An approximate closed-form link loss model for non-line-of-sight ultraviolet communication in noncoplanar geometry[J]. Opt Lett, 2011, 36(7): 1224-1226.

[14] Zuo Y, Xiao H F, Wu J, et al. Closed-form path loss model of non-line-of-sight ultraviolet single-scatter propagation[J]. Opt Lett, 2013, 38(12): 2116-2118.

[15] Ding H P, Chen G, Majumdar A K, et al. Modeling of non-line-of-sight ultraviolet scattering channels for communication[J]. IEEE J Sel Areas Comm, 2009, 27(9): 1535-1544.

[16] Ding H P, Xu Z Y, Sadler B M. A path loss model for non-line-of-sight ultraviolet multiple scattering channels[J]. EURASIP Journal on Wireless Communications and Networking, 2010, 2010: 598572.

[17] Chen G, Xu Z Y, Sadler B M. Experimental demonstration of ultraviolet pulse broadening in short-range non-line-of-sight communication channels[J]. Opt Express, 2010, 18(10): 10500-10509.

[18] 强若馨, 赵尚弘, 刘韵. 脉冲展宽对紫外光通信误码率的影响[J]. 红外与激光, 2015, 45(5): 559-563.

Qiang Ruoxin, Zhao Shanghong, Liu Yun. Influence of pulse broadening on bit error rate of ultraviolet communication[J]. Laser & Infrared, 2015, 45(5): 559-563.

[19] 柯熙政. 紫外光自组织网络理论[M]. 北京: 科学出版社, 2011: 36-39.

Ke Xizheng. UV self-organizing network theory[M]. Beijing: Science Press, 2011: 36-39.

[20] 何华. 无线紫外光通信及其组网的关键技术研究[D]. 西安: 西安理工大学, 2012: 15-28.

He Hua. Study on the key technology of wireless ultraviolet communication and ultraviolet networking[D]. Xi′an: Xi′an University of Technology, 2012: 15-28.

[21] Zachor A S. Aureole radiance field about a source in a scattering-absorbing medium[J]. Appl Opt, 1978, 17(12): 1911-1922.

[22] 何华, 柯熙政. 紫外光通信中的Mie散射机制[J]. 应用科学学报, 2012, 30(3): 245-250.

He Hua, Ke Xizheng. Mie scattering in ultraviolet communication[J]. Journal of Applied Sciences, 2012, 30(3): 245-250.

宋鹏, 柯熙政, 熊扬宇, 赵太飞. 非直视紫外光在非共面通信系统中的脉冲展宽效应[J]. 光学学报, 2016, 36(11): 1106004. Song Peng, Ke Xizheng, Xiong Yangyu, Zhao Taifei. Pulse Broadening Effect of Non-Line-of-Sight Ultraviolet in Noncoplanar Communication System[J]. Acta Optica Sinica, 2016, 36(11): 1106004.

非直视紫外光在非共面通信系统中的脉冲展宽效应

关于本站 Cookie 的使用提示

全站搜索

非直视紫外光在非共面通信系统中的脉冲展宽效应

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索