GMSK_viterbi_decoding

Matlab FSK Demodulator

数据矩阵运用非负矩阵分解算法，分解得到两个低维矩阵，并用于信号分离。(The data matrix is decomposed into two low-dimensional matrices by non-negative matrix decomposition algorithm and used for signal separation.)

说明：  本程序是暂态稳定分析程序，3机9节点模型，对其在pt时刻7号节点发生三相短路故障，并在ct时刻将故障切除进行仿真，最后绘出2号和1号发电机的功角差与时间的关系曲线。发电机模型采用三阶模型，忽略阻尼，电枢电阻取为零；励磁系统仅有量测和放大环节，忽略反馈和电压调节器；负荷采用恒定阻抗负荷。(This program is a transient stability analysis program, three machine nine node model, which has three-phase short circuit fault on node 7 at Pt time, and cut off the fault at CT time for simulation, and finally draw the relationship curve between power angle difference and time of generator 2 and 1. The generator model adopts the third-order model, neglecting the damping and taking the armature resistance as zero; the excitation system only has the measurement and amplification links, neglecting the feedback and voltage regulator; the load adopts the constant impedance load.)

C 程序 球面方位角算法： azimuth.cpp CRC校验快速算法： CRC_Table.cpp 解扰码算法： scrambler.cpp Matlab 程序 信号带宽测量： BandWith.m 带通信号下变频： fqmv.m QPSK 解调 demodQpsk.m pwelch求功率谱的算法 psdwh.m 均值滤波算法 cvmn.m 信号正交分解： Cnv2Bas.m(C procedures spherical azimuth algorithm: azimuth.cppCRC Fast Algorithm checksum: CRC_Table.cpp Descrambling code algorithm: scrambler.cpp Matlab signal bandwidth measurement procedures: BandWith.m bandpass signal down-conversion: fqmv.mQPSK demodulator for demodQpsk.mpwelch power spectrum algorithm psdwh.m mean signal filtering algorithm cvmn.m orthogonal decomposition: Cnv2Bas.m)

HUFFMAN TREE的编码源代码 实测可用 适合初学者使用(HUFFMAN TREE actual source code is available for beginners)

仿真实现接收信号并进行数字下变频处理，并进行了滤波，实现了降采样率的处理过程(The received signal is simulated and processed by digital down-conversion, and filtered. The process of reducing sampling rate is realized.)

matlab 关于GUI学习的资料，非常有使用价值(matlab on the GUI to learn the information, very value)

非线性拟合，可以根据已经数据，计算出对应的数据(Nonlinear fitting, can have data to calculate the corresponding data)

MATLAB解微分方程；遗传算法工具箱；laplace偏微分方程求解；(MATLAB for solving differential equations genetic algorithm toolbox laplace partial differential equations )

已知系统的差分方程，用matlab实现输出信号的自相关计算并画出图形。(Differential equations known system, the output signal using matlab autocorrelation calculated and drawn graphics.)