mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-22 12:23:37 -05:00
Working toward some new, separate, Q65 subroutines.
This commit is contained in:
Joe Taylor
parent
a75037d053
commit
60a053aa94
@ -21,12 +21,11 @@ subroutine q65_sync(nutc,iwave,ntrperiod,mode_q65,codewords,ncw,nsps, &
|
|||||||
parameter (LN=2176*63) !LN=LL*NN; LL=64*(mode_q65+2), NN=63
|
parameter (LN=2176*63) !LN=LL*NN; LL=64*(mode_q65+2), NN=63
|
||||||
integer*2 iwave(0:12000*ntrperiod-1) !Raw data
|
integer*2 iwave(0:12000*ntrperiod-1) !Raw data
|
||||||
integer isync(22) !Indices of sync symbols
|
integer isync(22) !Indices of sync symbols
|
||||||
integer itone(85)
|
|
||||||
integer codewords(63,206)
|
integer codewords(63,206)
|
||||||
integer dat4(13)
|
integer dat4(13)
|
||||||
integer ijpk(2)
|
integer ijpk(2)
|
||||||
logical lclearave
|
|
||||||
character*37 decoded
|
character*37 decoded
|
||||||
|
logical lclearave
|
||||||
real, allocatable :: s1(:,:) !Symbol spectra, 1/8-symbol steps
|
real, allocatable :: s1(:,:) !Symbol spectra, 1/8-symbol steps
|
||||||
real, allocatable :: s3(:,:) !Data-symbol energies s3(LL,63)
|
real, allocatable :: s3(:,:) !Data-symbol energies s3(LL,63)
|
||||||
real, allocatable :: ccf(:,:) !CCF(freq,lag)
|
real, allocatable :: ccf(:,:) !CCF(freq,lag)
|
||||||
@ -104,105 +103,15 @@ subroutine q65_sync(nutc,iwave,ntrperiod,mode_q65,codewords,ncw,nsps, &
|
|||||||
|
|
||||||
!######################################################################
|
!######################################################################
|
||||||
! Try list decoding via "Deep Likelihood".
|
! Try list decoding via "Deep Likelihood".
|
||||||
|
|
||||||
call timer('list_dec',0)
|
call timer('list_dec',0)
|
||||||
! call q65_dec_q3(codewords,ncw,isync,df
|
call q65_dec_q3(codewords,ncw,isync,sync,df,s1,iz,jz,ia,ibwa,ibwb, &
|
||||||
|
nstep,nsps,mode_q65,lag1,lag2,i0,j0,ccf,ccf1,ccf2,ia2,s3,LL,snr2, &
|
||||||
ipk=0
|
dat4,idec,decoded)
|
||||||
jpk=0
|
|
||||||
ccf_best=0.
|
|
||||||
imsg_best=-1
|
|
||||||
do imsg=1,ncw
|
|
||||||
i=1
|
|
||||||
k=0
|
|
||||||
do j=1,85
|
|
||||||
if(j.eq.isync(i)) then
|
|
||||||
i=i+1
|
|
||||||
itone(j)=-1
|
|
||||||
else
|
|
||||||
k=k+1
|
|
||||||
itone(j)=codewords(k,imsg)
|
|
||||||
endif
|
|
||||||
enddo
|
|
||||||
! Compute 2D ccf using all 85 symbols in the list message
|
|
||||||
ccf=0.
|
|
||||||
iia=200.0/df
|
|
||||||
|
|
||||||
do lag=lag1,lag2
|
|
||||||
do k=1,85
|
|
||||||
j=j0 + NSTEP*(k-1) + 1 + lag
|
|
||||||
if(j.ge.1 .and. j.le.jz) then
|
|
||||||
do i=-ia2,ia2
|
|
||||||
ii=i0+mode_q65*itone(k)+i
|
|
||||||
if(ii.ge.iia .and. ii.le.iz) ccf(i,lag)=ccf(i,lag) + s1(ii,j)
|
|
||||||
enddo
|
|
||||||
endif
|
|
||||||
enddo
|
|
||||||
enddo
|
|
||||||
|
|
||||||
ccfmax=maxval(ccf(-ia:ia,:))
|
|
||||||
if(ccfmax.gt.ccf_best) then
|
|
||||||
ccf_best=ccfmax
|
|
||||||
ijpk=maxloc(ccf(-ia:ia,:))
|
|
||||||
ipk=ijpk(1)-ia-1
|
|
||||||
jpk=ijpk(2)-53-1
|
|
||||||
f0=nfqso + (ipk-mode_q65)*df
|
|
||||||
xdt=jpk*dtstep
|
|
||||||
imsg_best=imsg
|
|
||||||
ccf1=ccf(:,jpk)
|
|
||||||
endif
|
|
||||||
enddo ! imsg
|
|
||||||
call timer('list_dec',1)
|
call timer('list_dec',1)
|
||||||
|
if(idec.lt.0) then
|
||||||
i1=i0+ipk-64
|
irc=-2
|
||||||
i2=i1+LL-1
|
dat4=0
|
||||||
j=j0+jpk-7
|
endif
|
||||||
n=0
|
|
||||||
do k=1,85
|
|
||||||
j=j+8
|
|
||||||
if(sync(k).gt.0.0) then
|
|
||||||
cycle
|
|
||||||
endif
|
|
||||||
n=n+1
|
|
||||||
if(j.ge.1 .and. j.le.jz) then
|
|
||||||
do i=0,LL-1
|
|
||||||
s3(i-64,n)=s1(i+i1,j) !Copy from s1 into s3
|
|
||||||
enddo
|
|
||||||
endif
|
|
||||||
enddo
|
|
||||||
|
|
||||||
nsubmode=0
|
|
||||||
if(mode_q65.eq.2) nsubmode=1
|
|
||||||
if(mode_q65.eq.4) nsubmode=2
|
|
||||||
if(mode_q65.eq.8) nsubmode=3
|
|
||||||
if(mode_q65.eq.16) nsubmode=4
|
|
||||||
nFadingModel=1
|
|
||||||
baud=12000.0/nsps
|
|
||||||
|
|
||||||
do ibw=ibwa,ibwb
|
|
||||||
b90=1.72**ibw
|
|
||||||
b90ts=b90/baud
|
|
||||||
call timer('dec1 ',0)
|
|
||||||
call q65_dec1(s3,nsubmode,b90ts,codewords,ncw,esnodb,irc,dat4,decoded)
|
|
||||||
call timer('dec1 ',1)
|
|
||||||
if(irc.ge.0) then
|
|
||||||
snr2=esnodb - db(2500.0/baud) + 3.0 !Empirical adjustment
|
|
||||||
idec=1
|
|
||||||
ic=ia2/4;
|
|
||||||
base=(sum(ccf1(-ia2:-ia2+ic)) + sum(ccf1(ia2-ic:ia2)))/(2.0+2.0*ic);
|
|
||||||
ccf1=ccf1-base
|
|
||||||
smax=maxval(ccf1)
|
|
||||||
if(smax.gt.10.0) ccf1=10.0*ccf1/smax
|
|
||||||
base=(sum(ccf2(-ia2:-ia2+ic)) + sum(ccf2(ia2-ic:ia2)))/(2.0+2.0*ic);
|
|
||||||
ccf2=ccf2-base
|
|
||||||
smax=maxval(ccf2)
|
|
||||||
if(smax.gt.10.0) ccf2=10.0*ccf2/smax
|
|
||||||
go to 100
|
|
||||||
endif
|
|
||||||
enddo
|
|
||||||
|
|
||||||
irc=-2
|
|
||||||
dat4=0
|
|
||||||
|
|
||||||
!######################################################################
|
!######################################################################
|
||||||
! Compute the 2D CCF using sync symbols only
|
! Compute the 2D CCF using sync symbols only
|
||||||
@ -329,6 +238,115 @@ subroutine q65_symspec(iwave,nmax,nsps,iz,jz,istep,nsmo,s1)
|
|||||||
return
|
return
|
||||||
end subroutine q65_symspec
|
end subroutine q65_symspec
|
||||||
|
|
||||||
|
subroutine q65_dec_q3(codewords,ncw,isync,sync,df,s1,iz,jz,ia,ibwa,ibwb, &
|
||||||
|
nstep,nsps,mode_q65,lag1,lag2,i0,j0,ccf,ccf1,ccf2,ia2,s3,LL,snr2, &
|
||||||
|
dat4,idec,decoded)
|
||||||
|
|
||||||
|
character*37 decoded
|
||||||
|
integer isync(22) !Indices of sync symbols
|
||||||
|
integer itone(85)
|
||||||
|
integer ijpk(2)
|
||||||
|
integer codewords(63,206)
|
||||||
|
integer dat4(13)
|
||||||
|
real ccf(-ia2:ia2,-53:214)
|
||||||
|
real ccf1(-ia2:ia2)
|
||||||
|
real ccf2(-ia2:ia2)
|
||||||
|
real s1(iz,jz)
|
||||||
|
real s3(-64:LL-65,63)
|
||||||
|
real sync(85) !sync vector
|
||||||
|
|
||||||
|
ipk=0
|
||||||
|
jpk=0
|
||||||
|
ccf_best=0.
|
||||||
|
imsg_best=-1
|
||||||
|
do imsg=1,ncw
|
||||||
|
i=1
|
||||||
|
k=0
|
||||||
|
do j=1,85
|
||||||
|
if(j.eq.isync(i)) then
|
||||||
|
i=i+1
|
||||||
|
itone(j)=-1
|
||||||
|
else
|
||||||
|
k=k+1
|
||||||
|
itone(j)=codewords(k,imsg)
|
||||||
|
endif
|
||||||
|
enddo
|
||||||
|
! Compute 2D ccf using all 85 symbols in the list message
|
||||||
|
ccf=0.
|
||||||
|
iia=200.0/df
|
||||||
|
|
||||||
|
do lag=lag1,lag2
|
||||||
|
do k=1,85
|
||||||
|
j=j0 + NSTEP*(k-1) + 1 + lag
|
||||||
|
if(j.ge.1 .and. j.le.jz) then
|
||||||
|
do i=-ia2,ia2
|
||||||
|
ii=i0+mode_q65*itone(k)+i
|
||||||
|
if(ii.ge.iia .and. ii.le.iz) ccf(i,lag)=ccf(i,lag) + s1(ii,j)
|
||||||
|
enddo
|
||||||
|
endif
|
||||||
|
enddo
|
||||||
|
enddo
|
||||||
|
|
||||||
|
ccfmax=maxval(ccf(-ia:ia,:))
|
||||||
|
if(ccfmax.gt.ccf_best) then
|
||||||
|
ccf_best=ccfmax
|
||||||
|
ijpk=maxloc(ccf(-ia:ia,:))
|
||||||
|
ipk=ijpk(1)-ia-1
|
||||||
|
jpk=ijpk(2)-53-1
|
||||||
|
f0=nfqso + (ipk-mode_q65)*df
|
||||||
|
xdt=jpk*dtstep
|
||||||
|
imsg_best=imsg
|
||||||
|
ccf1=ccf(:,jpk)
|
||||||
|
endif
|
||||||
|
enddo ! imsg
|
||||||
|
|
||||||
|
i1=i0+ipk-64
|
||||||
|
i2=i1+LL-1
|
||||||
|
j=j0+jpk-7
|
||||||
|
n=0
|
||||||
|
do k=1,85
|
||||||
|
j=j+8
|
||||||
|
if(sync(k).gt.0.0) then
|
||||||
|
cycle
|
||||||
|
endif
|
||||||
|
n=n+1
|
||||||
|
if(j.ge.1 .and. j.le.jz) then
|
||||||
|
do i=0,LL-1
|
||||||
|
s3(i-64,n)=s1(i+i1,j) !Copy from s1 into s3
|
||||||
|
enddo
|
||||||
|
endif
|
||||||
|
enddo
|
||||||
|
|
||||||
|
nsubmode=0
|
||||||
|
if(mode_q65.eq.2) nsubmode=1
|
||||||
|
if(mode_q65.eq.4) nsubmode=2
|
||||||
|
if(mode_q65.eq.8) nsubmode=3
|
||||||
|
if(mode_q65.eq.16) nsubmode=4
|
||||||
|
nFadingModel=1
|
||||||
|
baud=12000.0/nsps
|
||||||
|
|
||||||
|
do ibw=ibwa,ibwb
|
||||||
|
b90=1.72**ibw
|
||||||
|
b90ts=b90/baud
|
||||||
|
call q65_dec1(s3,nsubmode,b90ts,codewords,ncw,esnodb,irc,dat4,decoded)
|
||||||
|
if(irc.ge.0) then
|
||||||
|
snr2=esnodb - db(2500.0/baud) + 3.0 !Empirical adjustment
|
||||||
|
idec=1
|
||||||
|
ic=ia2/4;
|
||||||
|
base=(sum(ccf1(-ia2:-ia2+ic)) + sum(ccf1(ia2-ic:ia2)))/(2.0+2.0*ic);
|
||||||
|
ccf1=ccf1-base
|
||||||
|
smax=maxval(ccf1)
|
||||||
|
if(smax.gt.10.0) ccf1=10.0*ccf1/smax
|
||||||
|
base=(sum(ccf2(-ia2:-ia2+ic)) + sum(ccf2(ia2-ic:ia2)))/(2.0+2.0*ic);
|
||||||
|
ccf2=ccf2-base
|
||||||
|
smax=maxval(ccf2)
|
||||||
|
if(smax.gt.10.0) ccf2=10.0*ccf2/smax
|
||||||
|
exit
|
||||||
|
endif
|
||||||
|
enddo
|
||||||
|
|
||||||
|
return
|
||||||
|
end subroutine q65_dec_q3
|
||||||
|
|
||||||
subroutine q65_dec1(s3,nsubmode,b90ts,codewords,ncw,esnodb,irc,dat4,decoded)
|
subroutine q65_dec1(s3,nsubmode,b90ts,codewords,ncw,esnodb,irc,dat4,decoded)
|
||||||
|
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user