独立不同分布Nakagami-m信道下选择合并分集信噪比的统计特性及其应用

发布时间：2018-03-09 23:24

本文选题：Nakagami-m衰落信道　切入点：保密中断概率　出处：《中国科学:信息科学》2017年04期 　论文类型：期刊论文

【摘要】：本文推导了独立不同分布Nakagami-m(m为整数)衰落信道模型下接收端采用选择合并方式时信噪比的概率密度函数(probability density function,PDF)的闭式表达式.该表达式由有限多个幂函数与指数函数乘积的求和形式组成,可作为一个非常有用的数学工具来分析在独立不同分布Nakagami-m衰落信道下采用选择合并分集技术时的无线通信系统的中断概率、误符号率和遍历容量等性能,还可以用于研究物理层保密性能,比如保密中断概率(secrecy outage probability,SOP)和平均保密容量(average secrecy capacity,ASC).在单输入多输出(single-input multiple-output,SIMO)的无线通信系统中,本文以无线信息与能量同步传输(simultaneous wireless information and power transfer,SWIPT)通信系统为例,利用所得信噪比的PDF表达式研究了该系统的保密性能,进一步得到SOP和ASC的闭式表达式,最后通过数值仿真和Monte Carlo仿真对推导得到的SOP和ASC闭式表达式的准确性和有效性进行了验证.
[Abstract]:In this paper, the closed expression of probability density function probability density function (PDFs) of the signal-to-noise ratio (SNR) of the receiver under the independent and distributed Nakagami-m(m (integer) fading channel model is derived. The expression is derived from a finite number of power functions and exponents. The sum form of the product of a function, It can be used as a very useful mathematical tool to analyze the outage probability, symbol error rate and ergodic capacity of the wireless communication system under the independent and distributed Nakagami-m fading channel. It can also be used to study the performance of physical layer security, such as secure interrupt outage probability (SOP) and average secrecy capacity. In wireless communication systems with single-input multiple-output SIMO, In this paper, taking the simultaneous wireless information and power transfer (SWIPT) communication system of wireless information and energy synchronization as an example, the security performance of the system is studied by using the PDF expression of SNR, and the closed-form expressions of SOP and ASC are obtained. Finally, the accuracy and validity of the derived SOP and ASC closed-form expressions are verified by numerical simulation and Monte Carlo simulation.
【作者单位】：西南大学数学与统计学院;重庆邮电大学重庆市移动通信技术重点实验室;西南大学重庆市非线性电路与智能信息处理重点实验室;
【基金】：国家自然科学基金(批准号:61401372,61531016) 重庆市基础与前沿研究计划(批准号:cstc2013jcyjA40040,cstc2016jcyjA0510) 重庆市教委科学技术研究项目(批准号:KJ1600413) 中央高校基本科研业务经费(批准号:XDJK2015B023,XDJK2016A011)资助项目
【分类号】：TN929.5

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