2dpsk

对具有随机噪声的二阶系统的模型辨识及其被辨识系统的辨识结果(Second order with random noise on the system model and its identification system identification results are)

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 )

说明：  BP网络分类器，实现的对三组随机产生的数的有效分类(BP network classifier, to achieve the three the number of randomly generated effective classification)

Generate BASK Signals

射频功率放大器的数学建模，采用saleh模型在matlab环境下进行代码编写(hebavioral model of RF amplifier)

AVO地震响应，描述反射系数随炮检距的变化，为砂泥岩含气模型，属于第一类AVO(AVO seismic response, describing the reflection coefficient variation with offset for sand shale gas models belonging to the first category AVO)

共振解调的过程如下：首先对采集到的信号进行傅里叶变换，然后利用传感器自身的谐振频率进行分析，对滤波后的信号进行包络，包络以后去除了高频部分，得到包络信号，再对改进的包络信号进一步进行低通滤波，最后对最终得到的信号进行傅立叶变换求其频谱图。共振解调的原理及其过程可以用图2 来进行表述。(The process of resonance demodulation is as follows: First, Fourier transform is performed on the collected signal, and then the resonance frequency of the sensor is used for analysis. The filtered signal is enveloped, and the high frequency part is removed after enveloping to obtain an envelope. The signal is further subjected to low-pass filtering on the improved envelope signal. Finally, the spectrum of the resulting signal is Fourier-transformed. The principle of resonant demodulation and its process can be expressed in Figure 2.)

一个很好的matlab总svm组建，调试后非常好用(A good general svm matlab formed, was very useful debugging)

关于turbo码网格计算的仿真程序，对网格图的简化计算提出了新的实现(Turbo codes on the grid computing simulation program, to simplify the calculation of the grid map proposed a new realization of)

this is matlab exercise solved