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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).

介绍了原型滤波器的设计，并比较了不同混叠因子下滤波器的性能(this code include the design of the prototype filter,which is widely used in the multicarrier communication.we also compare the performance with different coefficient.)

说明：  采用M语言进行卡尔曼滤波器仿真matlab程序(M language Kalman filter simulation)

这个是个人编写的毕业论文程序,matlab编写，自动化专业，硕士论文(pid pid pid pid pid pid pid)

用MATLAB7.0版本GUI编写的柴油机和液力变矩器的匹配计算程序(MATLAB7.0 version with GUI prepared diesel and torque converter matched calculation program)

日本人做的一个雷达系统仿真的matlab的toolbox(The Japanese to do a radar system simulation matlab)

地球不转时的星下点轨迹，回归周期1天，可自行设定(Earth does not rotate when the nadir track one day return period)

模糊聚类分析中，需要用到各种聚类距离。此函数包括了7种模糊聚类距离函数，供大家学习使用。(Fuzzy clustering analysis, you need to use a variety of clustering distance.This function includes seven kinds of fuzzy clustering distance function, for them to learn to use.)

含有statcom的定风速风电机组在故障与非故障下补偿的建模与仿真(Fixed speed wind turbine contains statcom modeling and simulation at fault and non-fault compensation)

实现QPSK调制,很好的显示了调制后的波形，且可通过改变相应参数来变换图形(Realize QPSK modulation, good show the modulated waveform, and by changing the corresponding parameter to transform graphics)