mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2025-03-26 14:08:40 -04:00
d313457be5
rectangular pulses. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/jtms3@2484 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
45 lines
1.1 KiB
Fortran
45 lines
1.1 KiB
Fortran
subroutine genjtms3(msg,msgsent,iwave,nwave)
|
|
|
|
character*22 msg,msgsent
|
|
integer*1 chansym(258)
|
|
integer*2 iwave(30*48000)
|
|
integer dgen(13)
|
|
integer*1 data0(13)
|
|
integer*1 datsym(215)
|
|
integer indx0(9) !Indices of duplicated data symbols
|
|
data indx0 /16,38,60,82,104,126,148,170,192/
|
|
|
|
call packmsg(msg,dgen) !Pack message into 12 six-bit symbols
|
|
call entail(dgen,data0) !Move from 6-bit to 8-bit symbols, add tail
|
|
ndat=(72+31)*2
|
|
call encode232(data0,ndat,datsym) !Convolutional encoding
|
|
|
|
do i=1,9 !Duplicate 9 symbols at end of datsym
|
|
datsym(206+i)=datsym(indx0(i))
|
|
enddo
|
|
|
|
call scr258(isync,datsym,1,chansym) !Insert sync and data into chansym(258)
|
|
|
|
twopi=8.0*atan(1.0)
|
|
f0=1500.0
|
|
dphi=twopi*f0/48000.0
|
|
phi=0.
|
|
k=0
|
|
do j=1,258
|
|
do i=1,24
|
|
phi=phi+dphi
|
|
if(phi.gt.twopi) phi=phi-twopi
|
|
n=32767.0*sin(phi)
|
|
if(chansym(j).eq.0) n=-n
|
|
k=k+1
|
|
iwave(k)=n
|
|
enddo
|
|
enddo
|
|
nwave=k
|
|
|
|
! call genjtms3a(chansym,258,iwave,nwave)
|
|
msgsent=msg
|
|
|
|
return
|
|
end subroutine genjtms3
|