matlab_study

FDTD Finite-Difference Time-domain in free space no ABC FDTD(t) runs FDTD for time t. FDTD implements the FDTD/staggered leapfrog scheme over time 0-max_time and space 0-max_space. This program simulates a gaussian pulse in the grid specified with max_time and max_space. The pulse is sent from the center of the problem space and disperses in both directions -Kira Heater

This sliceomatic file is coded based on the slice fucntion in MATLAB It can be used to view the shape of various 3D strucntures,whoes cross sections can also be shown.

arnold置乱算法，将二维矩阵置乱，重新提取。(arnold scrambling algorithm, the two-dimensional matrix scrambling to re-extraction.)

程序先进行卷积编码，然后进行viterbi译码，程序有纠错功能，中间出现误码，程序解码时会自动纠正(Convolution coding program first and then viterbi decoding program has error correction, the error appears in the middle, when the program will automatically correct decoding)

ber_ldpc G(F)non bariny LDPC code

计算大型矩阵的MHSS迭代法Matlab程序，该程序包含几个部分。(MHSS iteration method)

Generation of ASK: Amplitude shift keying - ASK - in the context of digital communication is a modulation process which imparts to a sinusoid two or more discrete amplitude levels 1. These are related to the number of levels adopted by the digital message. For a binary message sequence, there are two levels one of which is typically zero. Thus the modulated waveform consists of bursts of a sinusoid. Demodulation of ASK: ASK signal has a well defined envelope. Thus it is amenable to demodulation by an envelope detector. Some sort of decision-making circuitry is necessary for detecting the message. The signal, which is a binary sequence is recovered by using a correlator and decision making circuitry. Matlab Program for Frequency shift keying program for Quadrature Amplitude Modulation Matlab program for phase shift keying program for Quadrature Phase shift keying

this is the code of facial recognition system

滑模变结构的M 文件，可以用于想学习滑模变结构的学习(Sliding Mode M-files can be used to want to learn sliding mode of learning)

说明：  谱估计的非参数DOA(Dorection of Arrive)方法----MUSIC(Multi Signal Classification，多重信号分类)算法(spectrum estimation of parameters DOA (Dorection of Arrive) method-M USIC (Multi Signal Classification, multiple signal classification) algorithm)