摘要
轨道角动量作为一种新的、高效利用无线电频谱的安全复用传输方式引起了科学界的关注。基于Matlab工具箱,建立了采用FSK调制方式的轨道角动量传输系统仿真模型,研究了OAM模式数和多进制频移键控M-FSK进制数M对误码率的影响;建立了OAM复用传输系统仿真模型,研究了复用传输系统的误码性能,验证了不同OAM模式的正交性,以及高效利用频谱的原理;建立了多径OAM传输系统模型,研究了采用不同的基带调制解调方式时,传输系统误码率与信噪比的关系。最后,设计了基于Matlab的GUI界面,进行了OAM传输系统中电场强度、能量密度、相位变化、复用传输和编解码过程的展示,讨论了OAM传输的安全性。
As a novel, safe and high efficient spectrum utilization technology, orbital angular momentum (OAM) has attracted a great deal of attention in scientific community. Based on Matlab toolbox, OAM transmission system using FSK modulation is established. The effect of OAM mode number and multiple M-ary frequency-shift keying on bit error rate is analyzed. A simulation model of OAM multiplexing transmission system was established, and the error performance of the multiplexing transmission system was studied. The orthogonality of different OAM modes and the principle of efficient use of spectrum are verified by simulation. A multi-path OAM transmission system model is established, and the relationship between the bit error rate and the signal-to-noise ratio of the transmission system when using different baseband modulation and demodulation methods is studied. Finally, a Matlab-based GUI interface was designed to display the electric field intensity, energy density, phase change, multiplex transmission, coding and decoding process in OAM transmission system, and the security of OAM transmission was discussed.
作者
蒋洪林
王文星
杨晶晶
黄铭
Honglin Jiang;Wenxing Wang;Jingjing Yang;Ming Huang(Honghe State Radio Management Office, Mengzi Yunnan;Key Laboratory for Spectrum Sensing and Borderlands Radio Safety of High Education in Yunnan Province,Kunming Yunnan)
出处
《电路与系统》
2018年第2期36-44,共9页
Open Journal of Circuits and Systems
基金
国家自然科学基金项目(编号:61461052)的资助
云南省高校谱传感与边疆无线电安全重点实验室的支持。
