matlab4

this will make your matlab run in retina model

simulation QPSK with Gray mapping of bits into symbols

IT IS FOR MATLAB PROJECT

信号包络求法,此法为hilbert变换和微分法的matlab源程序，有注释；(envelope curve calculation)

对4个发射天线，2个分别有2个接收天线的多用户MIMO系统进行BD预编码的仿真，观察其误码率性能。(Four transmit antennas, 2 respectively, the two receiving antennas, multi-user MIMO system BD precoding simulation, to observe the bit error rate performance.)

Layer KRR method document

语音对数谱，语谱图，倒谱的代码，自己编写的，可以运行(Speech log spectrum, the spectrogram, cepstrum of the code, I have written, you can run)

GPS TOOLBOX包含以下内容： 1、GPS相关常量和转换因子； 2、角度变换； 3、坐标系转换：  点变换；  矩阵变换；  向量变换； 4、专用测绘程序； 5、专用统计函数； 6、GPS时间工具； 7、专用GPS数据处理函数； 8、航迹和相关工具； 9、卫星位置计算； 10、高度和方位角判定，以及卫星可见性； 11、DOP（dilution of precision）计算，卫星选取和相关函数； 12、专用信号处理和Kalman滤波函数； 13、伪距和误差判定及相关函数； 14、用户位置判定及相关函数； 15、RAIM/FDE可用性和完好性评估相关函数。 (GPS TOOLBOX contain the following elements: 1, GPS-related constants and conversion factor 2, the perspective transform 3, coordinate system conversion:  point transform  matrix transformation  vector transform 4, private surveying and mapping procedures 5, specialized statistical function 6, GPS time instrument 7, a dedicated GPS data processing function 8, track and related tools 9, satellite position calculation 10, height and azimuth determination, as well as satellite visibility 11, DOP (dilution of precision) calculation , satellite selected and related functions 12, special-purpose signal processing and Kalman filtering function 13, pseudo-range and error determination and related functions 14, to determine user location and related functions 15, RAIM/FDE availability and good assessment of correlation function.)

ldpc encoding and decoding of different rates

光伏发电系统最大功率跟踪方法中，扰动观察法的S函数( 光伏发电系统最大功率跟踪方法中，扰动观察法的S函数 The maximum power tracking method of photovoltaic generation system, the S function of the disturbance observation method)