subroutine spec9(c0,npts8,nsps,f0a,lagpk,fpk,i1SoftSymbols) parameter (MAXFFT=31500) complex c0(0:npts8-1) real s(0:MAXFFT-1) real ssym(0:8,184) real ssymg(0:8,184) complex c(0:MAXFFT-1) integer*1 i1SoftSymbolsScrambled(207) integer*1 i1SoftSymbols(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/ integer ig(0:7) data ig/0,1,3,2,7,6,4,5/ ! data ig/0,1,3,2,6,7,5,4/ 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) 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 ssymg=ssym do j=1,nsym ssym(0,j)=ssymg(0,j) do i=0,7 ssym(ig(i)+1,j)=ssymg(i+1,j) enddo enddo m0=3 ntones=8 k=0 do j=1,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 i=0,ntones-1 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 i1SoftSymbolsScrambled(k)=min(127,max(-127,nint(10.0*(r1-r2)))) + 128 enddo enddo call interleave9(i1SoftSymbolsScrambled,-1,i1SoftSymbols) return end subroutine spec9