mirror of https://github.com/saitohirga/WSJT-X.git
36 lines
804 B
Fortran
36 lines
804 B
Fortran
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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real a(3)
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integer*1 i1SoftSymbolsScrambled(207)
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integer*1 i1SoftSymbols(207)
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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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freq=fpk - a(1)
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drift=-2.0*a(2)
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return
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end subroutine decode9a
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