光纤射频传输系统中相干正交频分复用的研究，介绍了系统的结构和性能,是一份很不错的学习材料。-Coherent optical fiber radio transmission system using orthogonal frequency division multiplexing, introduces the system structure and performance, is a very good learning materials.

所谓扩频通信，是扩展频谱通信的简称。它是指用来传输信息的射频带宽远大于信息本身带宽的一种通信方式，扩频通信系统的出现，被誉为是通信技术的一次重大突破。-The so-called spread spectrum communications, spread spectrum communication is short. It is used to transfer the information bandwidth of the RF bandwidth is much greater tha

包含特征值与特征向量的提取、训练样本以及最后的识别，计算十字叉丝的在不同距离的衍射图像,这是一个好用的频偏估计算法的matlab仿真程序。- Contains the eigenvalue and eigenvector extraction, the training sample, and the final recognition, Calculation crosshairs diffraction image at different distances, This is a usef