digital_watermark

a qpsk transmitter for digital communication system

matlab通信工程仿真的代码，各章的代码都有，使用matlab编译的，都已经通过验证，运行，希望对你有点帮助！(matlab communication engineering simulation code, each chapter code, using matlab compiled, have validated run, you want a little help!)

语言通俗易懂生动有趣是matlab编程入门的好书籍(Easy to understand language interesting is a good entry matlab programming books)

ofdm系统的载波频偏干扰消除程序。算法在程序中有详尽的注释。算法性能优良。(ofdm system carrier frequency offset interference cancellation process. Algorithm are detailed in the program notes. Algorithm is excellent.)

建立一个WS小世界的模型，返回该模型的连接矩阵(establish a WS small world model and obtain its adjency matrix)

为了得到具有一般相关量测噪声线性系统的递推滤波算法, 将该问题转化为具有相关量测 单值随机向量的滤波问题,根据单值随机向量的线性无偏最小方差估计算法,导出了量测噪声为一 般相关鞅差序列的线性系统的最优递推状态估计滤波算法.通过数值仿真,将该算法与假定量测噪 声不相关时的Kalman 滤波算法进行了比较,证明了该算法的有效性(In order to obtain the recursive f i ltering alg orithm for a linear system w ith general correlat
ed measurement noises, the problem is t ransformed to that of filtering for a single random vector w ith correlated measurements. According to the linear unbiased minimum variance estimation algorithm for a single random vector, a recursive filtering algori thm is presented. A digital simulat ion technique is used such that the new algorithm can be compared w i th the Kalman f i ltering algorithm, assuming that the measurement noises are uncorrelated. Validi ty of the proposed algorithm is thus proved)

说明：  能进行格里高利历、儒略日、GPS时、年积日的转化。(Conversion the Gregorian calendar, Julian Day and GPS)

segmentation using histogranm

说明：  压制干扰在雷达模拟中的应用，进行干扰模拟和识别。(Suppression jamming is applied in radar simulation to simulate and identify jamming.)

lowpass enhancement of an image