基于马尔科夫模型的双站激光微波混合链路性能分析OA北大核心CSTPCD
Performance Analysis of Dual Ground Station Laser-Microwave Hybrid Links Based on Markov Model
针对气象变化对自由空间光(Free Space Optical,FSO)通信链路和毫米波射频(Radio Frequency,RF)通信链路可用率的影响问题,采用马尔科夫建模与稳态概率求解计算方法,分析不同天气条件下FSO/RF混合链路的双接收站分集与中断概率性能.基于FSO链路和RF链路的信道模型,采用有限状态马尔科夫链(Finite State Markov Chain,FSMC)分别对单双站FSO/RF混合链路的切换选择进行建模,推导得出不同参数和天气情况下系统稳态的中断概率表达式.数值计算结果表明,当中断概率达到10-6,雨雾天气链路距离为1～7 km时,双站FSO/RF混合链路相比单站可获得4～25 dB的增益.
Aiming at the system availability problem of free space optical(FSO)link and millimeter wave radio fre-quency(RF)link under various meteorological conditions,multiple ground station diversity and system outage probability performance were investigated by using Markov model steady-state probability equilibrium method.Based on the channel models of FSO link and RF link,hybrid link selection finite state Markov chain(FSMC)was established for single and du-al station scheme respectively.Then their outage probability expressions were derived and calculated under different sys-tem parameters and weather conditions.Numerical results show that at outage probability 10-6,with link distance 1～7 km under rainy and foggy weather conditions,the dual ground station FSO/RF hybrid link can achieve 4～25 dB gain compared to single station case.
邵军虎;杜旭晓;庞健;史魏征
西安理工大学自动化与信息工程学院,西安市无线光通信与网络研究重点实验室,陕西西安 710048||华侨大学厦门市移动多媒体通信重点实验室,福建厦门 361021西安理工大学自动化与信息工程学院,西安市无线光通信与网络研究重点实验室,陕西西安 710048
电子信息工程
FSO/RF混合链路多站分集马尔科夫模型中断概率误码率
FSO/RF hybrid linkmultiple ground station diversityMarkov modeloutage probabilitybit error rate
《电子学报》 2024 (002)
468-476 / 9
国家自然科学基金青年基金(No.12104362);陕西省重点研发计划一般项目(No.2020GY-036);陕西省重点产业创新链项目(No.2017ZDCXL-GY-05-03);厦门市移动多媒体通信重点实验室(华侨大学)开放基金(No.HQUCOM17-02) National Natural Science Foundation of China(No.12104362);General Projects of Shaanxi Province's Key Research and Development Plan(No.2020GY-036);Shaanxi Province Key Industry Innovation Chain Proj-ect(No.2017ZDCXL-GY-05-03);Xiamen Mobile Multimedia Communication Key Laboratory(Overseas Chinese Univer-sity)Open Funddation(No.HQUCOM17-02)
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