chap4

我看到网上很多雷达信号处理的人都想从IPIX网站上下载数据，可是却没有MexCDF toolbox ，今天我把它上载，百分之白能用，里面有详细的安装步骤，可以在matlab7到matlab2012上使用。(I see online many radar signal processing wants to download data from the IPIX website, but did not MexCDF toolbox I upload per cent of white can be used, which has detailed installation steps, in matlab7 to matlab2012 to use.)

this is a matlab file channel rate who is maked by me.this is used in gsm,gprs,edge traffic simulation.

FORECAST WITH NEURAL NETWORKS

说明：  无线通信工程仿真中用到的信道模型，适用于MIMO-OFDM仿真。(wireless communications engineering simulation used in the channel model, applied to MIMO-OFDM simulation.)

通信原理仿真 码型反变换的仿真实现 Ⅰ、基本任务：由抽样判决后的AMI码型和CMI码型数字序列恢复出原始的PCM脉冲编码信号。 主要步骤和要求： （1）由抽样判决后的AMI码型数字序列恢复出原始的PCM脉冲编码信号（0、1信号）。要求抽样判决后的AMI码型数字序列可以是数字型也可以是字符型；要求画出码型反变换前后的波形图。 （2）由抽样判决后的CMI码型数字序列恢复出原始的PCM脉冲编码信号。要求抽样判决后的CMI码型数字序列可以是数字型也可以是字符型；要求画出码型反变换前后的波形图。 Ⅱ、选做任务：由抽样判决后的HDB3码型数字序列恢复出原始的PCM脉冲编码信号。 主要步骤和要求： 由抽样判决后的HDB3码型数字序列恢复出原始的PCM脉冲编码信号（0、1信号）。要求抽样判决后的HDB3码型数字序列可以是数字型也可以是字符型；要求画出码型反变换前后的波形图。 (Communication theory simulation Fifth problem, Pattern Simulation of inverse transform Ⅰ, basic tasks: decision by the sampling pattern after AMI and CMI pattern sequence to recover the original digital PCM pulse code signal. Main steps and requirements: (1) post-judgment by the AMI code sample digital sequence to restore the original PCM pulse code signal (signal 0,1). AMI requires post-judgment sampling digital code sequence can also be a numeric character asked to draw a pattern waveform before and after the inverse transform. (2) post-judgment by the CMI sampling digital code sequence to restore the original PCM pulse code signal. Requirements of post-judgment CMI sampling digital code sequence can also be a numeric character asked to draw a pattern waveform before and after the inverse transform. Ⅱ, choose to do the task: the post-judgment by the sample type HDB3 code sequence to recover the original digital PCM pulse code signal. Main steps and requirements: Pos)

非线性，非平稳信号的时域分析，matlab编程，仅供参考(Non-linear, non-stationary signals in time domain analysis, matlab programming for reference purposes only)

power flow seidel matlab

matlab 本身没有箭头功能，只有梯度，梯度不能精确，这是编写的箭头功能，可以精确定位箭头三维位置(matlab function itself has no arrows, only gradient, the gradient is not accurate, it is written in the arrow function, you can pinpoint the location of the arrow D)

说明：  随机信号处理AR自回归模型，谱分析的一种重要方法(Random signal processing AR auto-regressive model, spectral analysis of an important method)

matlab code of ButterworthHFourier