mirror of https://github.com/saitohirga/WSJT-X.git
Refactor the test9 routine into downsam9, peakdt9, symspec2, ...
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@2775 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Joe Taylor
parent
804e72d436
commit
4f34b46084
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@ -0,0 +1,47 @@
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subroutine decode9a(c0,npts8,nsps8,fpk,syncpk,snrdb,xdt,freq,drift, &
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i1SoftSymbols)
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complex c0(0:npts8-1)
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complex c2(0:4096-1)
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complex c3(0:4096-1)
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complex c5(0:4096-1)
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complex z
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real a(3),aa(3)
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integer*1 i1SoftSymbolsScrambled(207)
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integer*1 i1SoftSymbols(207)
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character*22 msg
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include 'jt9sync.f90'
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nspsd=16
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ndown=nsps8/nspsd
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! Downsample to 16 samples/symbol
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call downsam9(c0,npts8,nsps8,nspsd,fpk,c2,nz2)
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call peakdt9(c2,nz2,nsps8,nspsd,c3,nz3,xdt)
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fsample=1500.0/ndown
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a=0.
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call afc9(c3,nz3,fsample,a,syncpk)
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call twkfreq(c3,c5,nz3,fsample,a)
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call symspec2(c5,nz3,nsps8,nspsd,fsample,snrdb,i1SoftSymbolsScrambled)
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call interleave9(i1SoftSymbolsScrambled,-1,i1SoftSymbols)
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! limit=10000
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! call decode9(i1SoftSymbols,limit,nlim,msg)
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!###
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! do j=1,85
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! write(71,2101) j,nint(1.e-3*ss2(0:8,j))
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!2101 format(i2,2x,9i6)
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! enddo
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freq=fpk - a(1)
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drift=-2.0*a(2)
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! write(*,1100) nutc,nsync,nsnr,xdt,freq,a(2),msg
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!1100 format(i4.4,i5,i5,f6.1,f9.2,f8.2,2x,a22)
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return
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end subroutine decode9a
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@ -88,11 +88,11 @@ subroutine decoder(ss,c0)
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! call spec9(c0,npts8,nsps,f,fpk,xdt,snr,i1SoftSymbols)
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! call timer('spec9 ',1)
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call timer('test9 ',0)
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call timer('decode9a',0)
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fpk=1000.0 + df3*(i-1)
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c1(1:npts8)=conjg(c0(1:npts8))
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call test9(c1,npts8,nsps8,fpk,syncpk,snrdb,xdt,freq,drift,i1SoftSymbols)
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call timer('test9 ',1)
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call decode9a(c1,npts8,nsps8,fpk,syncpk,snrdb,xdt,freq,drift,i1SoftSymbols)
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call timer('decode9a',1)
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call timer('decode9 ',0)
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call decode9(i1SoftSymbols,limit,nlim,msg)
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@ -0,0 +1,46 @@
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subroutine downsam9(c0,npts8,nsps8,nspsd,fpk,c2,nz2)
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!Downsample to nspsd samples per symbol, info centered at fpk
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parameter (NMAX=128*31500)
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complex c0(0:npts8-1)
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complex c1(0:NMAX-1)
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complex c2(0:4096-1)
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fac=1.e-4
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c1(0:npts8-1)=fac*c0 !Copy c0 into c1
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do i=1,npts8-1,2
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c1(i)=-c1(i)
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enddo
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c1(npts8:)=0. !Zero the rest of c1
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nfft1=128*nsps8 !Forward FFT length
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nh1=nfft1/2
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df1=1500.0/nfft1
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call four2a(c1,nfft1,1,-1,1) !Forward FFT
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! do i=0,nfft1-1
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! f=i*df1
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! pp=real(c1(i))**2 + aimag(c1(i))**2
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! write(50,3009) i,f,1.e-6*pp
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!3009 format(i8,f12.3,f12.3)
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! enddo
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ndown=nsps8/16 !Downsample factor
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nfft2=nfft1/ndown !Backward FFT length
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nh2=nfft2/2
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fshift=fpk-1500.0
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i0=nh1 + fshift/df1
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do i=0,nfft2-1
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j=i0+i
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if(i.gt.nh2) j=j-nfft2
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c2(i)=c1(j)
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enddo
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call four2a(c2,nfft2,1,1,1) !Backward FFT
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nspsd=nsps8/ndown
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nz2=npts8/ndown
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return
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end subroutine downsam9
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@ -54,7 +54,9 @@ program jt9sim
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if(minutes.eq.10) nsps=82944
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if(minutes.eq.30) nsps=252000
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if(nsps.eq.0) stop 'Bad value for minutes.'
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f0=1500.d0 !Center frequency (MHz)
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f0=1400.d0 !Center frequency (MHz)
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! f0=1500.0
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! if(minutes.eq.5) f0=1100.
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! if(minutes.eq.10) f0=1050.
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! if(minutes.eq.30) f0=1025.
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@ -108,12 +110,17 @@ program jt9sim
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phi=0.
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baud=12000.d0/nsps
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k=12000 !Start audio at t = 1.0 s
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f1=0.0001 * (ifile-1)
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print*,ifile-2,f1
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dphi2=0.
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ddphi2=twopi*f1*dt/60.0
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do isym=1,85
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freq=f + i4tone(isym)*baud
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if(msg0(1:3).eq.'sin') freq=sinfreq
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dphi=twopi*freq*dt
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dphi=twopi*freq*dt + dphi2
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do i=1,nsps
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phi=phi + dphi
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dphi2=dphi2 + ddphi2
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if(phi.lt.-twopi) phi=phi+twopi
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if(phi.gt.twopi) phi=phi-twopi
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xphi=phi
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@ -1,50 +1,59 @@
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subroutine peakdt9(c0,npts8,nsps8,istart,foffset,idtpk)
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subroutine peakdt9(c2,nz2,nsps8,nspsd,c3,nz3,xdt)
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complex c0(0:npts8-1)
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complex zsum
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complex c2(0:4096-1)
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complex c3(0:4096-1)
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complex z
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real p(0:3300)
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include 'jt9sync.f90'
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twopi=8.0*atan(1.0)
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p=0.
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i0=5*nspsd
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do i=0,nz2-1
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z=1.e-3*sum(c2(max(i-(nspsd-1),0):i)) !Integrate
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p(i0+i)=real(z)**2 + aimag(z)**2 !Symbol power at freq=0
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! Option here for coherent processing ?
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! write(53,3301) i,z,p(i0+i),atan2(aimag(z),real(z))
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!3301 format(i6,4e12.3)
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enddo
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call getlags(nsps8,lag0,lag1,lag2)
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tsymbol=nsps8/1500.0
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dtlag=tsymbol/nspsd
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smax=0.
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tstep=0.0625*nsps8/1500.0
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idtmax=2.5/tstep
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f0=foffset
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dphi=twopi*f0/1500.0
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idtstep=4
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if(idtmax.lt.30) idtstep=2
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if(idtmax.lt.15) idtstep=1
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idt1=-idtmax
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idt2=idtmax
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10 do idt=idt1,idt2,idtstep
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i0=istart + 0.0625*nsps8*idt
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sum=0.
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do j=1,16
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i1=max(0,(ii(j)-1)*nsps8 + i0)
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i2=min(npts8-1,i1+nsps8-1)
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phi=0.
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zsum=0.
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do i=i1,i2
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if(i.lt.0 .or. i.gt.npts8-1) cycle
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phi=phi + dphi
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zsum=zsum + c0(i)*cmplx(cos(phi),-sin(phi))
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enddo
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sum=sum + real(zsum)**2 + aimag(zsum)**2
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lagpk=0
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do lag=lag1,lag2
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sum0=0.
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sum1=0.
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j=-nspsd
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do i=1,85
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j=j+nspsd
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if(isync(i).eq.1) then
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sum1=sum1+p(j+lag)
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else
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sum0=sum0+p(j+lag)
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endif
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enddo
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if(sum.gt.smax) then
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idtpk=idt
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smax=sum
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ss=(sum1/16.0)/(sum0/69.0) - 1.0
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xdt=(lag-lag0)*dtlag
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! write(52,3001) lag,xdt,ss
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!3001 format(i5,2f12.3)
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if(ss.gt.smax) then
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smax=ss
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lagpk=lag
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endif
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enddo
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if(idtstep.gt.1) then
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idtstep=1
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idt1=idtpk-3
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idt2=idtpk+3
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go to 10
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endif
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xdt=(lagpk-lag0)*dtlag
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nz3=nspsd*85
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do i=0,nz3-1
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j=i+lagpk-i0-nspsd+1
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if(j.ge.0 .and. j.le.nz2) then
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c3(i)=c2(j)
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else
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c3(i)=0.
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endif
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enddo
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return
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end subroutine peakdt9
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@ -0,0 +1,86 @@
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subroutine symspec2(c5,nz3,nsps8,nspsd,fsample,snrdb,i1SoftSymbolsScrambled)
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complex c5(0:4096-1)
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complex z
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integer*1 i1SoftSymbolsScrambled(207)
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real aa(3)
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real ss2(0:8,85)
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real ss3(0:7,69)
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integer*1 i1
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equivalence (i1,i4)
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include 'jt9sync.f90'
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aa(1)=-1500.0/nsps8
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aa(2)=0.
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aa(3)=0.
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do i=0,8
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if(i.ge.1) call twkfreq(c5,c5,nz3,fsample,aa)
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m=0
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k=-1
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do j=1,85
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z=0.
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do n=1,nspsd
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k=k+1
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z=z+c5(k)
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enddo
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ss2(i,j)=real(z)**2 + aimag(z)**2
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if(i.ge.1 .and. isync(j).eq.0) then
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m=m+1
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ss3(i-1,m)=ss2(i,j)
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endif
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enddo
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enddo
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!###
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ss=0.
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sig=0.
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do j=1,69
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smax=0.
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do i=0,7
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smax=max(smax,ss3(i,j))
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ss=ss+ss3(i,j)
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enddo
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sig=sig+smax
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ss=ss-smax
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enddo
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ave=ss/(69*7)
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call pctile(ss2,9*85,35,xmed)
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ss3=ss3/ave
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sig=sig/69.
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df8=1500.0/nsps8
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t=max(1.0,sig/xmed - 1.0)
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snrdb=db(t) - db(2500.0/df8) - 4.5
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! print*,'A',ave,xmed,sig,t,df8,snrdb
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m0=3
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k=0
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do j=1,69
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smax=0.
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do i=0,7
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if(ss3(i,j).gt.smax) smax=ss3(i,j)
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enddo
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do m=m0-1,0,-1 !Get bit-wise soft symbols
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if(m.eq.2) then
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r1=max(ss3(4,j),ss3(5,j),ss3(6,j),ss3(7,j))
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r0=max(ss3(0,j),ss3(1,j),ss3(2,j),ss3(3,j))
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else if(m.eq.1) then
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r1=max(ss3(2,j),ss3(3,j),ss3(4,j),ss3(5,j))
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r0=max(ss3(0,j),ss3(1,j),ss3(6,j),ss3(7,j))
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else
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r1=max(ss3(1,j),ss3(2,j),ss3(4,j),ss3(7,j))
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r0=max(ss3(0,j),ss3(3,j),ss3(5,j),ss3(6,j))
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endif
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k=k+1
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i4=nint(10.0*(r1-r0))
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if(i4.lt.-127) i4=-127
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if(i4.gt.127) i4=127
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i4=i4+128
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i1SoftSymbolsScrambled(k)=i1
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enddo
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enddo
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return
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end subroutine symspec2
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221
lib/test9.f90
221
lib/test9.f90
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@ -1,221 +0,0 @@
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subroutine test9(c0,npts8,nsps8,fpk,syncpk,snrdb,xdt,freq,drift,i1SoftSymbols)
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parameter (NMAX=128*31500)
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complex c0(0:npts8-1)
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complex c1(0:NMAX-1)
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complex c2(0:4096-1)
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complex c3(0:4096-1)
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complex c5(0:4096-1)
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complex z
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real p(0:3300)
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real a(3),aa(3)
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real ss2(0:8,85)
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real ss3(0:7,69)
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integer*1 i1SoftSymbolsScrambled(207)
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integer*1 i1SoftSymbols(207)
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integer*1 i1
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equivalence (i1,i4)
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character*22 msg
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include 'jt9sync.f90'
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fac=1.e-4
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c1(0:npts8-1)=fac*c0 !Copy c0 into c1
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do i=1,npts8-1,2
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c1(i)=-c1(i)
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enddo
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c1(npts8:)=0. !Zero the rest of c1
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nfft1=128*nsps8 !Forward FFT length
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nh1=nfft1/2
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df1=1500.0/nfft1
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call four2a(c1,nfft1,1,-1,1) !Forward FFT
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! do i=0,nfft1-1
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! f=i*df1
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! pp=real(c1(i))**2 + aimag(c1(i))**2
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! write(50,3009) i,f,1.e-6*pp
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!3009 format(i8,f12.3,f12.3)
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! enddo
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ndown=nsps8/16 !Downsample factor
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nfft2=nfft1/ndown !Backward FFT length
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nh2=nfft2/2
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fshift=fpk-1500.0
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i0=nh1 + fshift/df1
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do i=0,nfft2-1
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j=i0+i
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if(i.gt.nh2) j=j-nfft2
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c2(i)=c1(j)
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enddo
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call four2a(c2,nfft2,1,1,1) !Backward FFT
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nspsd=nsps8/ndown
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nz=npts8/ndown
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! Start of afc loop here: solve for DT, f0, f1, f2, (phi0) ?
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p=0.
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i0=5*nspsd
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do i=0,nz-1
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z=1.e-3*sum(c2(max(i-(nspsd-1),0):i)) !Integrate
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p(i0+i)=real(z)**2 + aimag(z)**2 !Symbol power at freq=0
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! Option here for coherent processing ?
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! write(53,3301) i,z,p(i0+i),atan2(aimag(z),real(z))
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!3301 format(i6,4e12.3)
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enddo
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call getlags(nsps8,lag0,lag1,lag2)
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tsymbol=nsps8/1500.0
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dtlag=tsymbol/nspsd
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smax=0.
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do lag=lag1,lag2
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sum0=0.
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sum1=0.
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j=-nspsd
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do i=1,85
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j=j+nspsd
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if(isync(i).eq.1) then
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sum1=sum1+p(j+lag)
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else
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sum0=sum0+p(j+lag)
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endif
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enddo
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ss=(sum1/16.0)/(sum0/69.0) - 1.0
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xdt=(lag-lag0)*dtlag
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! write(52,3001) lag,xdt,ss
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!3001 format(i5,2f12.3)
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if(ss.gt.smax) then
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smax=ss
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lagpk=lag
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endif
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enddo
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xdt=(lagpk-lag0)*dtlag
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iz=nspsd*85
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do i=0,iz-1
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j=i+lagpk-i0-nspsd+1
|
||||
if(j.ge.0 .and. j.le.nz) then
|
||||
c3(i)=c2(j)
|
||||
else
|
||||
c3(i)=0.
|
||||
endif
|
||||
enddo
|
||||
|
||||
sum1=0.
|
||||
sum0=0.
|
||||
k=-1
|
||||
do i=1,85
|
||||
z=0.
|
||||
do j=1,nspsd
|
||||
k=k+1
|
||||
z=z+c3(k)
|
||||
enddo
|
||||
pp=real(z)**2 + aimag(z)**2
|
||||
if(isync(i).eq.1) then
|
||||
sum1=sum1+pp
|
||||
else
|
||||
sum0=sum0+pp
|
||||
endif
|
||||
enddo
|
||||
ss=(sum1/16.0)/(sum0/69.0) - 1.0
|
||||
|
||||
fsample=1500.0/ndown
|
||||
nptsd=nspsd*85
|
||||
a=0.
|
||||
call afc9(c3,nptsd,fsample,a,syncpk)
|
||||
call twkfreq(c3,c5,nptsd,fsample,a)
|
||||
|
||||
aa(1)=-1500.0/nsps8
|
||||
aa(2)=0.
|
||||
aa(3)=0.
|
||||
do i=0,8
|
||||
if(i.ge.1) call twkfreq(c5,c5,nptsd,fsample,aa)
|
||||
m=0
|
||||
k=-1
|
||||
do j=1,85
|
||||
z=0.
|
||||
do n=1,nspsd
|
||||
k=k+1
|
||||
z=z+c5(k)
|
||||
enddo
|
||||
ss2(i,j)=real(z)**2 + aimag(z)**2
|
||||
if(i.ge.1 .and. isync(j).eq.0) then
|
||||
m=m+1
|
||||
ss3(i-1,m)=ss2(i,j)
|
||||
endif
|
||||
enddo
|
||||
enddo
|
||||
|
||||
!###
|
||||
ss=0.
|
||||
sig=0.
|
||||
do j=1,69
|
||||
smax=0.
|
||||
do i=0,7
|
||||
smax=max(smax,ss3(i,j))
|
||||
ss=ss+ss3(i,j)
|
||||
enddo
|
||||
sig=sig+smax
|
||||
ss=ss-smax
|
||||
enddo
|
||||
ave=ss/(69*7)
|
||||
call pctile(ss2,9*85,50,xmed)
|
||||
ss3=ss3/ave
|
||||
|
||||
sig=sig/69.
|
||||
df8=1500.0/nsps8
|
||||
t=max(1.0,sig/xmed - 1.0)
|
||||
snrdb=db(t) - db(2500.0/df8) - 5.0
|
||||
! print*,'A',ave,xmed,sig,t,df8,snrdb
|
||||
|
||||
m0=3
|
||||
k=0
|
||||
do j=1,69
|
||||
smax=0.
|
||||
do i=0,7
|
||||
if(ss3(i,j).gt.smax) then
|
||||
smax=ss3(i,j)
|
||||
ipk=i
|
||||
endif
|
||||
enddo
|
||||
|
||||
do m=m0-1,0,-1 !Get bit-wise soft symbols
|
||||
if(m.eq.2) then
|
||||
r1=max(ss3(4,j),ss3(5,j),ss3(6,j),ss3(7,j))
|
||||
r0=max(ss3(0,j),ss3(1,j),ss3(2,j),ss3(3,j))
|
||||
else if(m.eq.1) then
|
||||
r1=max(ss3(2,j),ss3(3,j),ss3(4,j),ss3(5,j))
|
||||
r0=max(ss3(0,j),ss3(1,j),ss3(6,j),ss3(7,j))
|
||||
else
|
||||
r1=max(ss3(1,j),ss3(2,j),ss3(4,j),ss3(7,j))
|
||||
r0=max(ss3(0,j),ss3(3,j),ss3(5,j),ss3(6,j))
|
||||
endif
|
||||
|
||||
k=k+1
|
||||
i4=nint(10.0*(r1-r0))
|
||||
if(i4.lt.-127) i4=-127
|
||||
if(i4.gt.127) i4=127
|
||||
i4=i4+128
|
||||
i1SoftSymbolsScrambled(k)=i1
|
||||
enddo
|
||||
enddo
|
||||
|
||||
call interleave9(i1SoftSymbolsScrambled,-1,i1SoftSymbols)
|
||||
! limit=10000
|
||||
! call decode9(i1SoftSymbols,limit,nlim,msg)
|
||||
|
||||
!###
|
||||
! do j=1,85
|
||||
! write(71,2101) j,nint(1.e-3*ss2(0:8,j))
|
||||
!2101 format(i2,2x,9i6)
|
||||
! enddo
|
||||
|
||||
freq=1500.0 + fshift - a(1)
|
||||
drift=a(2)
|
||||
! write(*,1100) nutc,nsync,nsnr,xdt,freq,a(2),msg
|
||||
!1100 format(i4.4,i5,i5,f6.1,f9.2,f8.2,2x,a22)
|
||||
|
||||
return
|
||||
end subroutine test9
|
||||
|
|
@ -8,17 +8,18 @@ subroutine twkfreq(c3,c4,npts,fsample,a)
|
|||
|
||||
! Mix the complex signal
|
||||
w=1.0
|
||||
wstep=1.0
|
||||
x0=0.5*(npts+1)
|
||||
s=2.0/npts
|
||||
do i=1,npts
|
||||
x=s*(i-x0)
|
||||
if(mod(i,100).eq.1) then
|
||||
! if(mod(i,100).eq.1) then
|
||||
p2=1.5*x*x - 0.5
|
||||
! p3=2.5*(x**3) - 1.5*x
|
||||
! p4=4.375*(x**4) - 3.75*(x**2) + 0.375
|
||||
dphi=(a(1) + x*a(2) + p2*a(3)) * (twopi/fsample)
|
||||
wstep=cmplx(cos(dphi),sin(dphi))
|
||||
endif
|
||||
! endif
|
||||
w=w*wstep
|
||||
c4(i)=w*c3(i)
|
||||
enddo
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
//------------------------------------------------------------- MainWindow
|
||||
//-------------------------------------------------------------- MainWindow
|
||||
#include "mainwindow.h"
|
||||
#include "ui_mainwindow.h"
|
||||
#include "devsetup.h"
|
||||
|
|
|
|||
Loading…
Reference in New Issue