解码转发方案下混合RF-UWOC传输系统的性能分析  

Performance Analysis of Mixed RF-UWOC Dual-Hop Transmission Systems with the DF Protocol

作　　者：黎赛 陈生海 杨亮 胡彦彬 LI Sai;CHEN Sheng-hai;YANG Liang;HU Yan-bin(College of Computer Science and Electronic Engineering,Hunan University,Changsha,Hunan 410082,China;Hunan Castking Intelligent Manufacturing Technology Co.,Ltd.,Changsha,Hunan 410100,China)

机构地区：[1]湖南大学信息科学与工程学院,湖南长沙410082 [2]湖南金龙智造科技股份有限公司,湖南长沙410100

出　　处：《电子学报》2022年第2期391-395,共5页Acta Electronica Sinica

基　　金：国家自然科学基金(No.91838302)。

摘　　要：本文研究了解码转发(Decode-and-Forward,DF)方案下的混合射频/水下无线光通信(Radio FrequencyUnderwater Wireless Optical Communication,RF-UWOC)系统的性能,其中RF链路服从广义K(Generalized-K,GK)衰落,UWOC链路服从混合指数-广义Gamma(Exponential-Generalized Gamma,EGG)衰落且存在指向误差.针对该混合RFUWOC系统,推导了信噪比(Signal-to-Noise Ratio,SNR)的累积分布函数(Cumulative Distribution Function,CDF)和概率密度函数(Probability Density Function,PDF).利用这些结果,推导出了混合RF-UWOC系统的中断概率、平均误码率和平均信道容量的精确表达式.此外,为了获得更多显性结果,还给出了高信噪比情况下中断概率和平均误码率的渐近分析.最后,通过蒙特卡洛仿真,验证了分析结果的准确性.This paper investigates the performance of a mixed radio frequency/underwater wireless optical communication(RF-UWOC)system with decode-and-forward(DF)relay,where the RF link experiences generalized-K fading and the UWOC link is modeled by the mixture exponential-generalized Gamma(EGG)fading with pointing errors.For this mixed RF-UWOC system,we derive the cumulative distribution function(CDF)and probability density function(PDF)of the signal-to-noise ratio(SNR).Based on these results,exact analytical expressions of the outage probability,average bit error rate(BER),and average channel capacity for the mixed RF-UWOC system are presented.In order to obtain more useful insights,we provide the asymptotic results of the outage probability and average BER in the high SNR regime.Finally,our analytical results are verified via Monte-Carlo simulation.

关 键 词：水下光无线通信 混合中继 解码转发 性能分析 

分 类 号：TN92[电子电信—通信与信息系统]