td-scdma 的GP，midamble，以及QPSK的调制方法。还包括SYNC-DL的自相关性和互相关性的验证-td-scdma of the GP, midamble, and the QPSK modulation method. Also includes the SYNC-DL autocorrelation and cross-correlation of verification

paper on Attack on LSB Steganography in Color and Grayscale Images Using Autocorrelation Coefficients

this programm is in matlab and about autocorrelation in m-sequence code with delay