1! LDPC (128,90) code 2parameter (KK=90) !Information bits (77 + CRC13) 3parameter (ND=128) !Data symbols 4parameter (NS=16) !Sync symbols (2x8) 5parameter (NN=NS+ND) !Total channel symbols (144) 6parameter (NSPS=160) !Samples per symbol at 12000 S/s 7parameter (NZ=NSPS*NN) !Samples in full 1.92 s waveform (23040) 8parameter (NMAX=30000) !Samples in iwave (2.5*12000) 9parameter (NFFT1=400, NH1=NFFT1/2) !Length of FFTs for symbol spectra 10parameter (NSTEP=NSPS/4) !Rough time-sync step size 11parameter (NHSYM=NMAX/NSTEP-3) !Number of symbol spectra (1/4-sym steps) 12parameter (NDOWN=16) !Downsample factor 13