yuanchengxu

GPS信号中C/A码的傅里叶变换，matlab程序(GPS signal C/A code of the Fourier transform, matlab program)

混合CS(布谷鸟搜索)算法的DE(差分进化)算法(DE (differential evolution) algorithm for hybrid CS (cuckoo search) algorithm)

此程序实现了AWGN信道下的模拟调制解调，用的是matlab平台(This program implements the analog modulation and demodulation under the AWGN channel, using the MATLAB platform.)

说明：  使用ncread循环读入所需要的nc数据，大致就是这么一个工具(Using ncread loops to read the required NC data is roughly such a too)

说明：  这个文件可以做calipso垂直分布，十分好用，专门做calipso的(calipso,vfm,plot,MATLAB)

A 2x2 multiple-input multiple-output (MIMO) architecture using dual-polarized antennas (DPAs) is considered with orthogonal frequency division multiplexing (OFDM). The performance of DPAs is evaluated for adaptive polarization (AP) transmission techniques in time-varying multipath channels impaired by polarization mode dispersion (PMD) and polarization-dependent loss (PDL). AP transmission techniques considered include power gain maximization, polarization dispersion minimization for interference avoidance, polarization multiplexing with waterfilling, and a suboptimal multiplexing strategy that enables direct recovery of the polarization multiplexed streams, thereby simplifying the design of the receiver. Measured time-varying dual-polarized channel realizations from mobile-to-mobile experiments are used to estimate the capacity, diversity, and interference avoidance performance of the adaptive approaches.

用于求取三维点云数据的法向量，我的人脸建模就是用的这个，效果很好，但必须保证点云没有重叠的，否则会出现严重错误。(Strike a 3D point cloud data for normal vectors, and my face is to use this model, the effect is very good, but must ensure that there is no overlap of the point cloud, there would be a serious mistake.)

说明：  matlab生成泰森多边形,并到处到txt文件，可用于晶体塑性有限元建模(generate a voronoi model and export to files)

说明：  中频信号正交采样（数字下变频）单频信号、 BPSK信号的低通滤波法(signal quadrature sampling (digital down conversion) for single frequency and BPSK signal use Low pass filtering)

qpsk的仿真以及根升余弦滤波器成形另外有误比特率的比较(qpsk simulation and shaping the root raised cosine filter)