hex_counter-2014-10-15

this file is about communication simulation modeling total form of communication system in a form of mathlab modeling

利用神经网络进行语言特征的识别，很有用的代码，希望对大家有用(Neural network is used to identify the characteristics of language, is very useful code, hope useful for everyone)

LMS滤波算法，分别对锯齿波、方波、正弦波进行了滤波，并将滤波前后的信号进行了对比，很好的恢复出了真实信号。(LMS filter algorithm. The sawtooth wave, square wave, sine wave are filtered, and the signals are contrasted before and after filtering. The real signals are all well recoveried by this algorithm.)

这是一个分数阶傅里叶算法的经典matlab程序(This is a fractional Fu Liye algorithm is the classic matlab program )

simulink basic firet order ode

3、 瑞利信道中的调制解调、信道估计： (1) 请推导出单径瑞利信道中的BPSK相干解调的理论误码率性能，并画出比特信噪比与误码率的关系曲线。 (2) 在单径瑞利信道中，请设计一种时分的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK的误码率性能，画出比特信噪比与误码率的关系曲线，并与(1)的曲线进行对比。 (3, the Rayleigh channel modulation and demodulation, channel estimation: (1) Please derive the single-path Rayleigh channel coherent demodulation of BPSK BER performance theory, and draw the signal to noise ratio and bit error rate curves. (2) single-path Rayleigh channel, please design a division of the guide-assisted channel estimation method, using Simulink simulation, measurement of the BER performance of BPSK, draw-bit signal to noise ratio and bit error rate curve, and with (1) of the curves were compared. )

说明：  isar成像，含外场数据，可以模拟成像效果，已经测试过了，可以使用(ISAR imaging, including field data can simulate the imaging effect,It has been tested and can be used)

Quadratic interpolation search method M-file

my experiments which are very useful

matlab code for implementation of y bus