matlab_code

这个是易语言源码,首先声明不懂易语言的不要下,毒软误报的问题不再解释,源码内容：禁止运行程序()

说明：  高阶累积量进行识别常用的数字调制信号，低信噪比下识别率高达90%(It uses the method of high cumulant to recognize usual digital signals, under low SNR, the radio is still over 90%.)

说明：  在实际的调谐解调电路中，采用的是非相干载波解调，本振信号与发射端的载波信号存在频率偏差和相位抖动，因而解调出来的模拟I、Q基带信号是带有载波误差的信号。这样的模拟基带信号即使采用定时准确的时钟进行取样判决，得到的数字信号也不是原来发射端的调制信号，误差的积累将导致抽样判决后的误码率增大，因此数字QPSK解调电路要对载波误差进行补偿，减少非相干载波解调带来的影响。(In the actual tuning and demodulating circuit, non-coherent carrier demodulation is adopted, and the frequency deviation and phase jitter of the local oscillator signal and the carrier signal of the transmitting end are present, and thus the demodulated analog I and Q baseband signals are signals with carrier error.)

APDL 培训资料，很好的学习ansys的资料(APDL training materials, information on good learning ansys)

一个用于高阶调制单载波系统的低复杂度均衡算法，非常有用(a low-complexity equilization algorithm which can be applied in single-carrier systems wiht high order modulation)

直扩码分多址DS-CDMA是利用高速的WALSH正交码序列作为地址码，与多用户信息数据相乘得到信息数据的直接扩频信号，再经过BPSK调制后发送出去，经过AWGN无线信道的传输后，在接收端与本地产生的地址码进行相关检测，从中将地址码与本地码一致的用户数据选出，把不一致的用户数据删除。(DS-CDMA DS-CDMA is the use of high-speed WALSH orthogonal code sequences as address code, with multi-user information data has been multiplied by the direct spread spectrum data information signal, and then after a BPSK modulated sent through AWGN channel after transmission, at the receiving end with the locally generated address code associated Detect, which will address code with local codes consistent user data elected to delete user data inconsistencies.)

关好电力规约IEC103的编程流程图.()

模拟调制识别各特征参数随信噪比变化曲线。信号的瞬时信息包括瞬时幅度、瞬时相位、瞬时频率及其不同角度的统计特征值，其中瞬时幅度、瞬时相位、瞬时频率是一个信号最基本的特征。（AM、DSB、SSB、VSB、FM、AM-FM）(Simulated Modulation Recognition Curve of Variation of Characteristic Parameters with Signal-to-Noise Ratio)

mpls tp oam frame work from ietf. very usefull

翻译版的《MIMO无线网络手册》（第二版），15年11月才出的，费了很大功夫做了电子版，这里只有前四章，针对的是信道部分，讲的很全面细致，对研究这部分的人有很大帮助(Translated version of MIMO Wireless Network Handbook (second edition), November 15 was out, and spent a lot of effort to make the electronic version, there is only the first four chapters, is for part of the channel, said very detailed and thorough , the study of this part of the people are very helpful)