基于Kronecker积的无线通信系统参量分离方法

发布时间：2018-07-01 12:57

本文选题：无线信道 + 功率放大器非线性　；参考：《电讯技术》2017年10期

【摘要】：针对无线通信系统中发射机非线性与多径衰落信道问题,提出了一种根据接收无线信号联合估计无线设备功率放大器(PA)非线性与无线信道单位脉冲响应的方法。首先,根据通信帧训练符号及发射机非线性模型构造卷积矩阵;接着,采用一次最小二乘(LS),根据接收信号估计PA的非线性模型系数与实际发送符号;然后,再采用一次LS,得到无线信道的单位脉冲响应估计;两估计可迭代或直接加取平均进行积累。理论推导与实验结果显示,采用过采样技术,所提方法可应用于单载波或多载波通信,实现PA非线性与无线信道单位脉冲响应的有效分离。新方法在无线通信的物理层射频指纹认证与信号可靠传输中具有应用价值。
[Abstract]:Aiming at the problem of transmitter nonlinearity and multipath fading channel in wireless communication system, a joint estimation method of wireless device power amplifier (PA) nonlinearity and wireless channel unit pulse response based on received wireless signal is proposed. Firstly, the convolution matrix is constructed according to the training symbol of communication frame and the nonlinear model of transmitter. Then, the nonlinear model coefficient of PA and the actual transmission symbol are estimated according to the received signal by using the first order least square (LS). The unit impulse response estimation of the wireless channel can be obtained by using LSs again, and the two estimators can be accumulated by iterating or adding average directly. The theoretical derivation and experimental results show that the proposed method can be applied to single-carrier or multi-carrier communication using over-sampling technique, which can effectively separate PA nonlinearity from radio channel unit pulse response. The new method has the application value in the physical layer RF fingerprint authentication and the signal reliable transmission of wireless communication.
【作者单位】：南通大学电子信息学院;
【基金】：国家自然科学基金资助项目(61371111) 交通运输部应用基础研究项目(2012-319-813-270) 江苏政府留学奖学金(University of Kent)项目
【分类号】：TN92

【相似文献】