xunhuan_toeplitz_juzhen

data hiding in audio signal, using matlab

主要介绍了MATLAB命令，并对其进行了一定总结。对掌握相应的函数有所帮助。(Mainly introduces the MATLAB command, and gain a certain sum. Corresponding function of the master help.)

用matlab&spss实现聚类分析,源自《计量地理学》（徐建华，华东师范大学）。(Achieve with matlab & spss cluster analysis.)

Interconnect line capacitance and coupling effect

调用摄像头，人脸识别matlab代码，利用人脸皮肤与北京差异进行识别。(Call camera, face recognition matlab code, the use of facial skin with Beijing differences identified.)

模拟实验室中产生的清音和浊音，通过仿真产生清浊音的频谱图，非常有效的对比，可以看出它们之间的差异。(Voiceless and voiced simulation laboratory generated by simulation generated Voicing the spectrum, very effective contrast, you can see the difference between them. )

一种多波束阵列天线系统发射通道幅相误差环路校正方案。采用了经过空域DFT变换的m/WH复合正交码作为校正测试信号。 (A multi-beam array antenna system loop transmit channel amplitude and phase error correction scheme. After airspace using DFT transform m/WH complex orthogonal code as calibration test signal.)

数值分析的部分matlab代码分享，如有错误还请见谅！(Part matlab code analysis of numerical analysis, please forgive me if there is any mistake.)

程序的主要功能是做了一定范围的信噪比下，对每个信噪比：随机信号QPSK调制； 根据Alamouti方案的矩阵进行编码；发送信号经过瑞利信道和加入高斯白噪声； 接收信号采用最大比合并的方法；最后对合并信号进行最大似然判决并求误符号率。 结果表明10^-3对应大约12->13dB(Procedure main function is to do a certain range of SNR for each signal to noise ratio: random signal QPSK modulation program in accordance with Alamouti coding matrix send signals through Rayleigh channel and adding Gaussian white noise received signal using maximal-ratio combining method Finally the combined signal and the maximum likelihood decision for symbol error rate. The results showed that about 10 ^-3 corresponds to 12-> 13dB)

简单的小程序实现不同的功能，均应用基本函数实现，均是入门级程序，内附注释和说明，放心下载(Simple little program to achieve different functions, are applied to achieve the basic functions are all entry-level program, containing notes and instructions, ease download)