包括四元数的各种计算,ldpc码的编解码实现，内含心电信号数据及运用MATLAB写的源代码。- Including quaternion various calculations, Codec ldpc code implementation ECG data and includes source code written in MATLAB.

Rotating Machinery dimensional hologram of practical spectrum calculation routines, Contains a common array signal processing algorithm, Complete codec LDPC code.

Fractional Fourier transform computing, The Chinese have a comment, understand it, Complete codec LDPC code.