simulation-project

M-file for simulating a QPSK transmitter by modulating with a pseudo random bit stream. A serial to parallel conversion of the pseudo random bit stream is performed with mapping of two bits per symbol. A cosine and sine carrier is configured and the I and Q symbols modulate these carriers. The I and Q carriers are combined and time and frequency domain plots are provided showing key waveforms at various positions in the QPSK transmitter. (M-file for simulating a QPSK transmitter b y modulating with a pseudo random bit stream. A s erial to parallel conversion of the pseudo rand om bit stream is performed with mapping of two bi ts per symbol. A cosine and sine carrier is CBMs gured and the I and Q symbols Modulate these CARR IERS. The I and Q carriers are combined and a time nd frequency domain plots are provided showing key waveforms at various positions in the QPSK t ransmitter.)

单脉冲扩频角跟踪仿真程序，适用于单脉冲雷达接收机。(Single pulse spreading angle tracking simulation program for single pulse radar receiver.)

使用matlab计算多种气体的碰撞截面。(Calculate cross-section )

说明：  使用matlab有关am调制的仿真编程，基本的仿真代码(Am prepared to use the simulation on matlab programming, the basic simulation code)

三种语音增强算法的源程序，可以播放处理前后的语音，谱相减法，滤波器法及最小均方误差法(Three speech enhancement algorithm of the source can be played before and after voice spectral subtraction filter method and the minimum mean square error method)

泰勒级数展开算法是需要初始估计位置的递归算法，在每一次的递归中通过求解TDOA测量误差的局部最小二乘来改进估计的位置。 本程序基于MATLAB，对泰勒级数展开算法进行了仿真。初始位置的选取很重要，建议和其他简单的算法进行协同，对信号源位置进行定位。 希望对研究信号源定位的同志有所帮助。(Taylor series expansion algorithm is the need to estimate the location of the initial recursive algorithm, in every recursive TDOA measurement error by solving the partial least squares to improve the position estimate. The program is based on MATLAB, the Taylor series expansion algorithm for the simulation. The selection of the initial position is very important, the proposed algorithm and other simple coordination, to locate the signal source location. Want to locate the source of research help comrades.)

模式向量维数太大，无法进行模式识别,降维 (k-l)

Syterm indentifitionf

pwm Igbt model in matlab simulink

平面波展开法计算能带，计算速度快，资源占用少(Plane wave expansion method to calculate the energy band, fast calculation)