mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-22 04:11:16 -05:00
13 lines
780 B
Fortran
13 lines
780 B
Fortran
! LDPC (174,91) code
|
|
parameter (KK=91) !Information bits (77 + CRC14)
|
|
parameter (ND=58) !Data symbols
|
|
parameter (NS=21) !Sync symbols (3 @ Costas 7x7)
|
|
parameter (NN=NS+ND) !Total channel symbols (79)
|
|
parameter (NSPS=1920) !Samples per symbol at 12000 S/s
|
|
parameter (NZ=NSPS*NN) !Samples in full 15 s waveform (151,680)
|
|
parameter (NMAX=15*12000) !Samples in iwave (180,000)
|
|
parameter (NFFT1=2*NSPS, NH1=NFFT1/2) !Length of FFTs for symbol spectra
|
|
parameter (NSTEP=NSPS/4) !Rough time-sync step size
|
|
parameter (NHSYM=NMAX/NSTEP-3) !Number of symbol spectra (1/4-sym steps)
|
|
parameter (NDOWN=60) !Downsample factor
|