spgl1-1.6

face recognition through matlab

Arduino Uno Sketch to take measurements a strain gauge at precise depths into an elastic object. Interfaces the Uno with a micrometer using SPC and with strain gauge bridge circuit using Analog input pin. Tested to work on OSEPP Uno R3 Plus (Arduino Uno equivalent uC)

牛顿拉夫逊的matlab程序，可以用，已验证。(Newton Raphson method)

this code is used to find short time fourier transform

插值matlab源程序,附使用说明,包括拉各朗日插值,牛顿插值,及示例(Interpolation matlab source, with the use of notes, including the pull of the Long Day interpolation, Newton interpolation, and examples)

matlab实现字母统计，希望大家多多指教(achieve statistical matlab letter, I hope you lot of advice)

说明：  中文版完善的matlab simulink 电气模块设计（SimPowerSystems）使用说明，一步一步教你电气模块(Chinese version of matlab simulink comprehensive modular design Electrical (SimPowerSystems) the use of that teach you step-by-step electrical module)

Quadrature amplitude modulation (QAM) is a modulation scheme in which two sinusoidal carriers, one exactly 90 degrees out of phase with respect to the other, are used to transmit data over a given physical channel. One signal is called the I signal, and the other is called the Q signal. Because the orthogonal carriers occupy the same frequency band and differ by a 90 degree phase shift, each can be modulated independently, transmitted over the same frequency band, and separated by demodulation at the receiver. For a given available bandwidth, QAM enables data transmission at twice the rate of standard pulse amplitude modulation (PAM) without any degradation in the bit error ratio (BER).

《MATLAB实用教程》 MATLAB例程源代码 可作为电子、通信、自控等专业本科生研究生及广大科研人员的参考。 (" MATLAB Practical Tutorial" MATLAB routine source code can be used as electronics, communications, self-control and other professional researchers undergraduate students and the general reference.)

主要用途是对抗多径衰落。由于多径衰落的存在，使得同一个帧由于路径不同，到达用户端的时延有先有后。在相关的频域上的会造成子载波之间的相互干扰，影响 性能。另外，由于有了循环前缀，使得IFFT FFT操作把原来的线性卷积变成循环卷积，大大简化了相应的信号处理复杂度(The main purpose is to fight against multipath fading. Due to the presence of multipath fading, the first after they have the same frame different paths to reach the client delay. Would cause mutual interference between sub-carriers in the frequency domain, affecting performance. In addition, thanks to the cyclic prefix, so IFFT FFT operation to the linear convolution of the original into a circular convolution, greatly simplifying the corresponding signal processing complexity)