NcutClustering

计算给定的传感器加速度信号的一阶香农熵，可改变信号分段数以改变熵值(calculate the signal s Shannon entropy)

I,Q通道的 噪声过程是高斯的的,而且是互不相关的,他的功率谱也是白的. 因为I和Q通道的噪声过程是高斯的,而且是互不相关的 我们可以得到他们是相互独立(Papoulis,1984). 最后,由于I和Q通道是独立的零均值高斯过程,因此可以推导出:复信号:I+jQ,幅度是瑞丽分布的,幅度的平放是指数分布的,相位角arctan(Q/I)是在(0,2π]上均匀分布(I Q Gaussian noise)

OFDM simulated in Matlab

Matlab与C语言混合编程源代码，2012年出版的新书(Matlab and C language mixed programming source code, a new book published in 2012)

锁相环实验，PLL参数测试，锁相环PLL原理与应用，环路滤波器 (The experimental phase-locked loop, PLL parameter testing, and application of the principle of the PLL loop filter )

The signal received by a user over the forward link in such a high data rate system contains interference from the neighboring base stations. we note that the strength of this interference is a function of the network load in the neighboring cells. we obtain an expression for the received SINR (Signal to Interference and Noise Ratio) as a function of the traffic load in the interfering cells. Using this result, we propose an improvement to the SINR estimation scheme that is implemented in the current cellular data network. The proposed scheme provides a more accurate estimate of the user SINR by taking better account of the contribution of inter-cell interference. It builds on top of the current SINR measurement scheme by using a combination of pilot measurement and traffic load measurement

C++ simple examples for beginners -part 4

无线衰落信道 在无线移动信道中，信号从发射天线经过复杂的传播环境到达接收天线，接收信号为各反射、衍射和散射分量以及信道噪声的复合，因而会产生严重的失真。另外，移动信道中由于移动台运动或信道环境的改变会使信道特性随时间随机变化，接收到的信号由于Doppler效应会产生更为严重的失真。 (OFDM has superior performance when transmitting high rate data in wireless fading channel.)

输入输出无约束MPC控制器设计，有详细的备注，可运行，适合入门学习的朋友(MPC controller design for unconstrained linear system)

该程序能通过加标签将模拟表盘得刻度删除掉！通过大量得图片都能得到很好得效果！(through the process of labeling analog dial in the calibration deleted! Through a picture can be a very good result!)