service-2.1

说明：  心电信号的实时数字预处理，关于工频与高频干扰的消除(ECG real-time digital preprocessing, frequency and high frequency interference on the Elimination of)

Face Recognition System

说明：  直扩信号BPSK的仿真，采用异或移位的算法实现PN码达到扩频的目的(BPSK DS signal simulation, using different algorithms, or shift the PN code to achieve the purpose of spreading)

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MATLAB的颜色代码，基于RGB的代码形式，可作为编写时检索用。(MATLAB color code)

说明：  qrs的检测算法，利用matlab实现，检出率高 (qrs detect)

A MIMO multiplexing system with NT transmit and NR = NT receive antennas is designed. The main challenge for MIMO systems lies in the non-orthogonality of the transmission channel. This can be solved by turbo processing. Turbo channel encoder is used for converting the bits in its suitable form. Then different M-ary QAM is compared.

％ y=filter(sig,fmin,fmax) ％ 对信号进行理想滤波，可完成低通，带通 ％ sig为被滤波信号 ％ fmin为下限频率，当fmin为0时为低通滤波器，当fmin>0时，为带通滤波器 ％ fmax为上限频率，fmax>fmin ％ fs为信号的采样频率 ％ y为经过滤波后的信号 (％ Y = filter (sig, fmin, fmax)％ of the ideal signal filtering, to be completed by low-pass, band-pass filter％ sig for signal％ fmin is the minimum frequency, when fmin for 0:00 for the low-pass filter, when fmin > 0, for the bandpass filter％ fmax is the upper limit frequency, fmax> fmin％ fs for signal sampling frequency％ y for the filtered signal)

说明：  经过主元分析后的神经网络算法Matlab代码(After principal component analysis of neural network algorithm Matlab code)

该代码是自己编制的，主要用于红外图像的特征提取，其中提取长宽比，复杂度，紧凑度，均值比，不变矩等七种红外图像的特征，可很好的为以后的识别做准备(The code is compiled their own, mainly for the infrared image feature extraction, which extract the aspect ratio, complexity, compactness, mean ratio of seven invariant moments and other characteristics of infrared images can be very good for the future identification prepare)