Comm_system

数字锁相环实现源码，有很大的参考价值。 由 鉴相器 模K加减计数器 脉冲加减电路 同步建立侦察电路 模N分频器 构成.(DPLL realize source, has a great reference value. By the phase detector counter modulus K addition and subtraction circuit synchronous pulse addition and subtraction to establish surveillance mode N divider circuit constituted.)

在通信中实现ＱＡＭ８的星座图恢复，并且附上了结果图作为参考。ＱＡＭ８的星座图是一种简单的调制方式(QAM8 achieve constellation in communication recovery, and attach the results shown as a reference. QAM8 constellation is a simple modulation)

采用了小波去噪的思想，课程设计时编写的matlab程序代码，基于分段非线性权重值的Pso算法，搭建OFDM通信系统的框架，进行逐步线性回归，进行波形数据分析,最大似然（ML）准则和最大后验概率（MAP）准则，采用偏最小二乘法。( Using wavelet denoising thought, Course designed to prepare the matlab program code, Based on piecewise nonlinear weight value Pso algorithm, Build a framework OFDM communication system, Stepwise linear regression, Waveform data analysis, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, Partial least squares method.)

小波包分析提取振动信号中的特征频率，从先验概率中采样，计算权重，含噪脉冲信号进行相关检测。( Wavelet packet analysis to extract vibration signal characteristic frequency, Sampling a priori probability, calculate the weight, Noisy pulse correlation detection signal.)

1）已知2N点实数序列 N=64。用一个64点的复数FFT程序，一次算出 ，并绘出频谱 。 （2）已知某序列 在单位圆上的N=64等分样点的Z变换 。用N点IFFT程序计算 ，绘出图像 。 (1) known 2N-point sequence of real numbers N = 64. With a 64-point complex FFT process, a calculated and mapped the spectrum. (2) known to a certain sequence in the unit circle on the N = 64 sub-samples of the Z transform. N-point IFFT procedures used, the mapped image.)

this is a chapter of famous book by van trees"optimum array processing"

说明：  可计算任意波形THD的小工具，非常方便；修改其输入波形即可得出结果(A tool for calculate THD)

说明：  张正友摄像机标定matlab程序摄像机标定姿态估计(Zhang Zhengyou matlab camera calibration procedure is estimated camera calibration posture)

matlab gui设计基础教程资料，详细，适合matlab初学者(Matlab based GUI design tutorials, detailed, suitable for beginners matlab)

一个基于matlab的Svpwm程序，使用S函数实现(Svpwm a matlab-based program that uses the S function to achieve )