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精度很高的多椭圆中心提取代码。算法参考论文：A Simple Operator for Very Precise Estimation of Ellipses.

说明：  提出了一种综合采用ButterWorth低通滤波器和平均值低通滤 波器的低通滤波器设计新方法. (Presents a comprehensive low-pass filter and using ButterWorth average low-pass filter low-pass filter design of the new method.)

扩频序列仿真代码，包括主函数，产生序列函数，扩频函数，调制函数，多径衰落函数。(Spreading sequences simulation code, including the main function, the sequence function, spread function, modulation function, multipath fading function.)

Mathematic Pascal problems. it is a lil bit easy with a triangle structure. and the number inside.

信号、系统及频率响应，离散时间傅立叶正反变换，离散LTI系统的频率响应(Signals, systems and frequency response, both positive and negative discrete-time Fourier transform, discrete frequency response of LTI system)

tthis folder is an implementation of clipping PAPR reduction scheme for FBMC system

Noise can be defined as unwanted signal that interferes with the communication or measurement of another signal. Noise conveys information regarding the source of the noise, e.g. the noise from a car engine conveys information regarding the state of the engine.

image segmentation method by spectural clustering ... try for all ,,note that it s standard copy

Adaptive background mixture models for real-time tracking

QPSK 在高斯信道下的调制解调的matlab仿真实现，可显示输入数据的波形表示，I支路和Q支路以及调制前、解调后、接收的波形、星座图等(In the Gaussian channel QPSK modulation and demodulation matlab Simulation, the waveform can be displayed, said input data, I branch and Q branch, and before modulation, demodulation, the received waveform, constellation, etc.)