tuxiangfenge

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).

自己实现的一维、二维DFT。优点：变换后的低频分量在中间，弥补了matlab库函数的不足（高频分量在中间）(Realize their own one-dimensional, two-dimensional DFT. Advantages: low-frequency components after the transformation in the middle, made up for the inadequacy of matlab library function (high-frequency component in the middle))

倒立摆的源代码希望对你有用，分享一下看看，希望对你有用(The source code for inverted pendulum useful to you want to share it and see, you want to be useful)

预测控制，通过当前输入和预测未来输出来控制输出值，使系统尽快达到稳定。(Predictive control to predict the future by the current input and output to control the output value, allowing the system to stabilize as soon as possible.)

matlab常用函数整理与收集，常用函数整理与收集(matlab commonly used functions finishing )

说明：  这份资料是关于MATLAB的初级介绍，对于初学者非常实用，如果想快速学会使用matlab,建议大家先看看这份资料。谢谢！(This information is on the MATLAB primary introduction is very useful for beginners, if you want to quickly learn how to use matlab, suggest that you take a look at this information. Thank you!)

IEEE paper in information coding techniques

改进的粒子群算法，有更好的性能，提高了算法的搜索能力(Improved particle swarm optimization, better performance, improved search ability of the algorithm)

此程序为8cpfsk调制解调部分，解调用维特比实现(This program 8cpfsk modem part of the solution achieved is called Viterbi)

主成份分析， matlab源代码， PCA 算法。(The principal component analysis, Matlab source code, PCA algorithm.)