DDA-receiver

该程序源代码实现了CDMA通信系统性能的仿真，用MATLAB实现了直序、跳时、跳频以及M序列，GOLD序列等的产生，及在AWGN和RAYLEIGH环境下误码率的计算(The program source code to achieve the performance of CDMA communication system simulation, using MATLAB realize the direct sequence, time hopping, frequency hopping and M sequences, GOLD sequence generation, and in the AWGN environment and RAYLEIGH BER calculation)

对通信系统中的注水算法技术进行matlab仿真。(The water injection system of communication technology matlab simulation algorithm.)

说明：  对示波器采集数据进行AR谱估计，并进行功率误差分析(Collecting data on the oscilloscope AR spectral estimation and error analysis of power)

these codes implement out of band carrier de activation for OFDM. the number of subcarriers is flexible.

license . dat file crack

将像素数据写成一幅PPM格式的图片，像素数据为灰度图的数据，附件里有一个图像数据，宽150，高90，共100帧(The data will be written in a grayscale image PPM format, the program is written in matlab, the file contains a grayscale data.)

i upload a matlab code which can calculate density of atmosphere and temperature in altitude of over 100 km

matlab，把文件解压后放入matlab的默认文件夹里，一般是（C:MATLAB7work）。在matlab主窗口中输入命令ima=imread( C:MATLAB7work1.jpg )，然后输入命令[P,U,iter]=GPAS2(ima,2)，即可。绝对好运行(matlab, matlab to unzip the files into the default folder, usually (C: MATLAB7 work). In the matlab main window, type the command ima = imread (' C: MATLAB7 work 1.jpg' ), and then enter the command [P, U, iter] = GPAS2 (ima, 2), can. Definitely a good run)

基于EGM模型计算全球任一经纬度处的重力异常，垂线偏差(Global computing at any latitude and longitude based on gravity anomalies EGM model, vertical deviation)

matlab设计各种滤波器的例子程序，包括带通、带阻、低通、高通，设计需要提供的参数均有注释说明(Design examples of various filters matlab procedures, including band pass, band stop, low pass, high pass, provided the design parameters are needed explanatory notes)