mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-15 08:31:57 -05:00
Working toward decode capability.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@2628 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Joe Taylor
parent
c85ab5027c
commit
8970a140e0
@ -31,7 +31,10 @@ subroutine genjt9(message,minutes,msgsent,d6)
|
||||
call encode232(d1,nsym2,d2) !Convolutional code, K=32, r=1/2
|
||||
call interleave9(d2,1,d3) !Interleave the single bits
|
||||
call packbits(d3,nsym2,3,d4) !Pack 3-bit groups into words
|
||||
call graycode(d4,69,1,d5) !Apply Gray code
|
||||
d5=d4
|
||||
print*,d5
|
||||
|
||||
! call graycode(d4,69,1,d5) !Apply Gray code
|
||||
|
||||
! Insert sync symbols (ntone=0) and add 1 to the data-tone numbers.
|
||||
j=0
|
||||
|
||||
@ -108,10 +108,10 @@ program jt9
|
||||
3001 format(i8,2f12.3)
|
||||
enddo
|
||||
|
||||
print*,npts8,npts8/1500.0
|
||||
nutc=nutc0
|
||||
nstandalone=1
|
||||
call sync9(ss,tstep,f0a,df3)
|
||||
call sync9(ss,tstep,f0a,df3,lagpk,fpk)
|
||||
call spec9(c0,npts8,nsps,f0a,lagpk,fpk)
|
||||
! call decode0(dd,ss,savg,nstandalone,nfsample)
|
||||
enddo
|
||||
|
||||
|
||||
@ -155,9 +155,11 @@ program jt9sim
|
||||
t5(j)=itone(i)-1
|
||||
enddo
|
||||
|
||||
call graycode(t5,69,-1,t4)
|
||||
! call graycode(t5,69,-1,t4)
|
||||
t4=t5
|
||||
call unpackbits(t4,69,3,t3)
|
||||
call interleave9(t3,-1,t2)
|
||||
! call interleave9(t3,-1,t2)
|
||||
t2=t3
|
||||
|
||||
nbits=72
|
||||
ndelta=17
|
||||
@ -169,8 +171,11 @@ program jt9sim
|
||||
t2(i)=i1
|
||||
enddo
|
||||
|
||||
print*,t2
|
||||
|
||||
call fano232(t2,nbits+31,mettab,ndelta,limit,t1,ncycles,metric,ierr, &
|
||||
maxmetric,maxnp)
|
||||
print*,ncycles
|
||||
|
||||
nbytes=(nbits+7)/8
|
||||
do i=1,nbytes
|
||||
|
||||
142
libm65/spec9.f90
Normal file
142
libm65/spec9.f90
Normal file
@ -0,0 +1,142 @@
|
||||
subroutine spec9(c0,npts8,nsps,f0a,lagpk,fpk)
|
||||
|
||||
parameter (MAXFFT=31500)
|
||||
complex c0(0:npts8-1)
|
||||
real s(0:MAXFFT-1)
|
||||
real ssym(0:9,184)
|
||||
complex c(0:MAXFFT-1)
|
||||
integer*1 softbit(207)
|
||||
integer ibit(207)
|
||||
|
||||
integer*1 t1(13) !72 bits and zero tail as 8-bit bytes
|
||||
integer*4 t4(69) !Symbols from t5, values 0-7
|
||||
integer*4 mettab(0:255,0:1)
|
||||
integer*1 tmp(72)
|
||||
character*22 msg
|
||||
|
||||
integer isync(85)
|
||||
integer ii(16) !Locations of sync symbols
|
||||
data ii/1,6,11,16,21,26,31,39,45,51,57,63,69,75,81,85/
|
||||
|
||||
isync=0
|
||||
do i=1,16
|
||||
isync(ii(i))=1
|
||||
enddo
|
||||
|
||||
idt=-400
|
||||
idf=0.
|
||||
fshift=fpk-f0a + 0.1*idf
|
||||
twopi=8.0*atan(1.0)
|
||||
dphi=twopi*fshift/1500.0
|
||||
nsps8=nsps/8
|
||||
nfft=nsps8
|
||||
df=1500.0/nfft
|
||||
s=0.
|
||||
istart=lagpk*nsps8 + idt
|
||||
nsym=min((npts8-istart)/nsps8,85)
|
||||
print*,f0a,lagpk,fpk,fshift,nsym
|
||||
|
||||
do j=0,nsym-1
|
||||
ia=j*nsps8 + istart
|
||||
ib=ia+nsps8-1
|
||||
c(0:nfft-1)=c0(ia:ib)
|
||||
|
||||
phi=0.
|
||||
do i=0,nfft-1
|
||||
phi=phi + dphi
|
||||
c(i)=c(i) * cmplx(cos(phi),-sin(phi))
|
||||
enddo
|
||||
|
||||
call four2a(c,nfft,1,-1,1)
|
||||
do i=0,nfft-1
|
||||
sx=real(c(i))**2 + aimag(c(i))**2
|
||||
if(i.le.8) ssym(i,1+j)=sx
|
||||
s(i)=s(i) + sx
|
||||
enddo
|
||||
enddo
|
||||
|
||||
! sync=0.
|
||||
! do i=1,16
|
||||
! sync=sync + ssym(0,ii(i))
|
||||
! enddo
|
||||
|
||||
do i=0,nfft-1
|
||||
freq = f0a + i*df
|
||||
write(71,3001) i,i*df,freq,s(i)
|
||||
3001 format(i8,3f12.3)
|
||||
enddo
|
||||
|
||||
do j=1,nsym
|
||||
write(72,3002) j,(ssym(i,j),i=0,8)
|
||||
3002 format(i3,9f7.2)
|
||||
enddo
|
||||
|
||||
m0=3
|
||||
ntones=8
|
||||
k=0
|
||||
do j=1,nsym
|
||||
! print*,j,k,nsym
|
||||
if(isync(j).eq.1) cycle
|
||||
do m=m0-1,0,-1 !Get bit-wise soft symbols
|
||||
n=2**m
|
||||
r1=0.
|
||||
r2=0.
|
||||
do ig=0,ntones-1
|
||||
! i=igray(ig,-1)
|
||||
i=ig
|
||||
if(iand(i,n).ne.0) then
|
||||
r1=max(r1,ssym(i+1,j))
|
||||
else
|
||||
r2=max(r2,ssym(i+1,j))
|
||||
endif
|
||||
enddo
|
||||
k=k+1
|
||||
softbit(k)=min(127,max(-127,nint(10.0*(r1-r2)))) + 128
|
||||
enddo
|
||||
enddo
|
||||
|
||||
ibit=0
|
||||
do i=1,207
|
||||
if(softbit(i).lt.0) ibit(i)=1
|
||||
enddo
|
||||
print*,ibit
|
||||
|
||||
! Get the metric table
|
||||
bias=0.37 !To be optimized, in decoder program
|
||||
scale=10 ! ... ditto ...
|
||||
open(19,file='met8.21',status='old')
|
||||
|
||||
do i=0,255
|
||||
read(19,*) x00,x0,x1
|
||||
mettab(i,0)=nint(scale*(x0-bias))
|
||||
mettab(i,1)=nint(scale*(x1-bias)) !### Check range, etc. ###
|
||||
enddo
|
||||
close(19)
|
||||
nbits=72
|
||||
ndelta=17
|
||||
limit=1000
|
||||
|
||||
print*,softbit
|
||||
call fano232(softbit,nbits+31,mettab,ndelta,limit,t1,ncycles,metric,ierr, &
|
||||
maxmetric,maxnp)
|
||||
print*,ncycles
|
||||
|
||||
nbytes=(nbits+7)/8
|
||||
do i=1,nbytes
|
||||
n=t1(i)
|
||||
t4(i)=iand(n,255)
|
||||
enddo
|
||||
call unpackbits(t4,nbytes,8,tmp)
|
||||
call packbits(tmp,12,6,t4)
|
||||
do i=1,12
|
||||
if(t4(i).lt.128) t1(i)=t4(i)
|
||||
if(t4(i).ge.128) t1(i)=t4(i)-256
|
||||
enddo
|
||||
do i=1,12
|
||||
t4(i)=t1(i)
|
||||
enddo
|
||||
call unpackmsg(t4,msg) !Unpack decoded msg
|
||||
print*,msg
|
||||
|
||||
return
|
||||
end subroutine spec9
|
||||
@ -1,10 +1,12 @@
|
||||
subroutine sync9(ss,tstep,f0a,df3)
|
||||
subroutine sync9(ss,tstep,f0a,df3,lagpk,fpk)
|
||||
|
||||
parameter (NSMAX=22000) !Max length of saved spectra
|
||||
real ss(184,NSMAX)
|
||||
|
||||
integer ii(16)
|
||||
integer isync(85) !Sync vector
|
||||
integer ii0(16)
|
||||
integer ii(16) !Locations of sync half-symbols
|
||||
data ii/1,11,21,31,41,51,61,77,89,101,113,125,137,149,161,169/
|
||||
integer isync(85) !Sync vector for half-symbols
|
||||
data isync/ &
|
||||
1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,0,0,0,0, &
|
||||
1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0,1,0, &
|
||||
@ -12,15 +14,6 @@ subroutine sync9(ss,tstep,f0a,df3)
|
||||
0,0,1,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0, &
|
||||
1,0,0,0,1/
|
||||
|
||||
ii=0
|
||||
k=0
|
||||
do i=1,85
|
||||
if(isync(i).eq.1) then
|
||||
k=k+1
|
||||
ii(k)=2*i-1
|
||||
endif
|
||||
enddo
|
||||
|
||||
nz=1000.0/df3
|
||||
|
||||
smax=0.
|
||||
@ -40,9 +33,9 @@ subroutine sync9(ss,tstep,f0a,df3)
|
||||
enddo
|
||||
enddo
|
||||
|
||||
freq=f0a + (npk-1)*df3
|
||||
write(*,1010) lagpk,npk,freq
|
||||
1010 format('lagpk:',i4,' npk:',i6,' freq:',f8.2)
|
||||
fpk=f0a + (npk-1)*df3
|
||||
write(*,1010) lagpk,npk,fpk
|
||||
1010 format('lagpk:',i4,' npk:',i6,' fpk:',f8.2)
|
||||
|
||||
do lag=-lagmax,lagmax
|
||||
sum=0.
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
//------------------------------------------------------------- MainWindow
|
||||
//-------------------------------------------------------------- MainWindow
|
||||
#include "mainwindow.h"
|
||||
#include "ui_mainwindow.h"
|
||||
#include "devsetup.h"
|
||||
|
||||
Loading…
Reference in New Issue
Block a user