采样定理

说明：  使用ReliefF算法实现特征排序，进行特征选择，上传数据集为UCI乳腺癌数据。(The data set is UCI breast cancer data, and the ReliefF algorithm is used to sort its features to realize feature selection.)

This a ddk filter sample for keyboard

npg algorithm npg algorithm npg algorithm (npg algorithm npg algorithm npg algorithm npg algorithm )

对通信中应用较多的自适应滤波算法LMS算法进行了仿真，并且解决了信号的起始值的对齐问题。(Application of communication are more adaptive filtering algorithm for simulation of LMS algorithm, and solve the initial value of the signal alignment problems.)

说明：  OFDM的实现流程 比较详细的输入和输出编解码(for OFDM process)

非常方便的读写固定列宽的时间日期数据，读文件与存文件都是文本格式(Very convenient to read and write fixed column width of the time and date data, read the file and save files are text format)

QAM constellation with noise and channel(QAM constellation)

说明：  目前，以空间调制(Spatial Modulation，SM)、广义空间调制(Generalized Spatial Modulation，GSM)为代表的新型MIMO技术，成为4G以及5G的关键技术。空间调制系统在一个符号周期内，发送端只选择部分发送天线发送信号，从而大大提高了频谱效率，是大规模MIMO系统的重大突破。(At present, the new MIMO technology represented by spatial modulation (SM) and generalized spatial modulation (GSM) has become the key technology of 4G and 5g. In a symbol period, the transmitter only selects part of the antenna to transmit the signal, which greatly improves the spectral efficiency. It is a major breakthrough in large-scale MIMO systems.)

批量读栅格文件转成二进制文件的值信息，适合地理学(Batch read grid file into a binary file the value of information, suitable for geography)

采用改进的遗传算法在MIMO系统中进行信号检测(Improved genetic algorithm for signal detection in MIMO systems)