shuangkuiwenxian

语音PCM编码，从输入，在高斯白噪声下传输到译码(PCM voice coding, from the importation of the white Gaussian noise transmitted to the decoder)

基于MATLAB的QPSK相干解调与非相干解调的误码率性能分析。(Based on the MATLAB QPSK coherent demodulation and non-coherent demodulation analysis of the BER performance.)

FGM板有限元matlab程序 FGM板有限元matlab程序(单刚)(failed to translate)

为了防止码间干扰，rs码编译码采用硬判决+维特比译码(rs_hdd_vterbi)

matlab related prgrams

This is the simulation of Photoshop magic wand effect of Matlab procedures for image segmentation

人工免疫交叉算法等，适用于基础开发于应用等(Artificial Immune cross-algorithm, applicable to the infrastructure development in the application)

说明：  实现4psk调制的源程序，以及对应的在白噪声信道下的系统性能(achieve 4psk modulation source, as well as corresponding white noise in the channel system performance)

A new method for periodic scattering problems using 2nd kind boundary integral equations and the free-space Green s function, adding extra degrees of freedom on the unit cell walls, and imposing quasi-periodicity in an expanded linear system.(A new method for periodic scattering problems using 2nd kind boundary integral equations and the free-space Green s function, adding extra degrees of freedom on the unit cell walls, and imposing quasi-periodicity in an expanded linear system. This avoids the problems with the standard approach, namely: the quasi-periodic Green s function is slow to evaluate, it diverges at Wood s anomalies, and it does not handle large aspect ratios well. Our new approach cures all three issues, and can easily be `wrapped around an existing code (e.g. fast-multipole acceleration) for the isolated-obstacle scattering problem. It includes the latest talk slides: "A new integral representation for quasi-periodic scattering problems in two dimensions")

Gold序列因为其良好的伪噪声特性，经常作为CDMA扩频系统仿真中的用户扩频序列，用MATLAB可以产生各种长度的Gold序列优选对，在此基础上，产生混沌序列等其他性质的扩频序列也很容易。(MATLAB script for Illustrative Gold sequence generation)