counter_cm4imi

matlab code for region growing

matlab上进行FFT变换的程序，为初学者提供有用的帮助(matlab fft)

code pso-svm matlab for optimazation.

在实现QPSK的系统时，用到的位同步部分的程序(QPSK in the realization of the system, used part of the process-bit synchronous)

该程序能够产生一个脉冲调制信号，信号为复数解析类型，实部满足狄拉克脉冲函数(the procedure can have a pulse modulation signals, signal analysis for complex types, meet the real Dirac pulse function)

噪声信号产生软件，非常不错的，大家可以下载试试，一个简单产生白噪声的软件(Noise signal generator software, very good, we can try to download a simple software generates white noise)

说明：  防碰撞纯扩展ALOHA的matlab仿真算法(Pure ALOHA anti-collision expansion of the simulation algorithm matlab)

说明：  LSSVN用于预测的程序，希望对初学者有帮助(LSSVN used to predict the program, want to help beginners)

垂直分层编码ZF检测算法程序代码问题，此程序是在调制方式为QPSK或4QAM下，未编码的V-BLAST系统 计算噪声功率时,信号的功率要用总的接收信号的功率.每根接收天线上的噪声功率是相同的.同时总的信号能量归一化,每根天线上发送的信号能量是总的发 送能量的1/Nt,其中Nt是发送天线数, 改变发送天线Nt和接收天线数目Mt,可以比较QPSK和4QAM时4发4收,4发6收,8发8收,8发12收等多发多收的情况 (Vertical stratification coding ZF detection algorithm program code, the process is in a way for QPSK or 4 QAM, not coding V-BLAST system Calculating noise power, the power of the signal with general received signal power. Each root receiving antenna on the noise power are the same. And general signal energy normalization, each blade on the signal energy send antenna is overall hair Send energy 1/Nt, of which is transmitting antenna Nt number, change the transmitting antenna Nt and receiving antenna number Mt, can compare QPSK QAM and 4 when the hair 4 4, 4 hair and accept, eight hair 8 accept, eight hair 12 accept etc multiple collect more of the situation )

该程序可用于神经网络变量筛选， BP神经网络，程序完整，可直接运行(Neural network variable filter, BP neural network)