frequency

软件无线电的前景分析，以及一些技术的详细介绍，感觉不错(Analysis of the prospects for software radio, as well as some technical details, I feel good)

本程序峭度的计算程序，已做成工具包，可以直接调用(The program kurtosis calculation program, has made kit, you can call)

structure of periodic crystal

包含了QPSK、OQPSK调制，QAM调制，以及16QAM调制通信系统仿真，采用格雷码，升余弦滤波，高斯信道(Includes QPSK, OQPSK modulation, QAM modulation, and 16QAM modulation communications system simulation, using Gray code, raised cosine filtering, Gaussian channel)

configuracion de archivos docsis

动态倒计时牌，目标时间（即倒计时截至时间）的年、月、日、时、分、秒以及倒计时主题可以根据不同主题由用户动态设定，并且在此设定基础上在屏幕上显示距离相关主题到达之时还有n年、n天和n秒（其中的三个n各不相同，且随着程序运行动态变化），以北京时间作为主要显示板块，同时显示纽约、伦敦时间的附加倒计时板块。程序中除了刚运行时给出一次当前标准时间值（或读出系统当前时间）外，在程序运行期间应在自己独立的用户时钟控制下，而不受外界输入影响和系统时间的束缚。(Dynamic countdown, the target time (ie, as the countdown time) of the year, month, day, hour, minute, second, and the countdown theme can set different themes by the users, and in this setting is displayed on the screen on the basis of distance-related There are n the theme of the time of arrival, n day n seconds (one of the three different n, and with the dynamic program runs), to Beijing as the main display section, also shows New York, London time, the additional countdown Plate. In addition to just run the program once the current standard time value is given (or read the current system time), but during the program should be independent in their own under the control of the user clock, and free from outside influence and input system time constraints. )

Forward Modeling 1D using matlab

说明：  采用扩展卡尔曼滤波跟踪飞机飞行轨迹，文件中提供数据和MATLAB程序(The extended Kalman filter is used to track the flight path of the aircraft. The data and matlab program are provided in the document)

说明：  旋转不变性子空间（ESPRIT）类算法需要对阵列接收数据协方差矩阵进行特征分解。ESPRIT 类算法是利用接收数据协方差矩阵的信号子空间的旋转不变性，它利用各子阵的信号子空间之间的旋转不变性求出信号的入射角信息。(Rotation invariant subspace (ESPRIT) algorithms need to decompose the covariance matrix of array received data. ESPRIT algorithm is based on the rotation invariance of the signal subspace of the received data covariance matrix. It uses the rotation invariance between the signal subspaces of each subarray to obtain the incident angle information of the signal.)

说明：  自己参考别人编的一种turbo码的编码和解码(Others have made reference to a series of encoding and decoding of turbo codes)