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Call OSD if Deep decoding is selected.

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This commit is contained in:
Steve Franke 2019-05-26 12:08:07 -05:00
parent a56960a19b
commit 11065c349c
1 changed files with 25 additions and 9 deletions
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34
lib/ft4_decode.f90
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@ -74,7 +74,7 @@ contains
logical nohiscall,unpk77_success
logical one(0:255,0:7) ! 256 4-symbol sequences, 8 bits
logical first, dobigfft
logical dosubtract
logical dosubtract,doosd
data icos4a/0,1,3,2/
data icos4b/1,0,2,3/
@ -210,19 +210,23 @@ contains
fb=nfb
dd=iwave
! ndepth=3: 2 passes, subtract on each pass
! ndepth=2: 1 pass, no subtraction
! ndepth=1: 1 pass, no subtraction, fewer candidates
! ndepth=3: 3 passes, bp+osd
! ndepth=2: 3 passes, bp only
! ndepth=1: 1 pass, no subtraction
max_iterations=40
syncmin=1.2
dosubtract=.true.
doosd=.true.
nsp=3
if(ndepth.lt.3) then
if(ndepth.eq.2) then
doosd=.false.
endif
if(ndepth.eq.1) then
nsp=1
dosubtract=.false.
doosd=.false.
endif
if(ndepth.eq.1) syncmin=2.0
do isp = 1,nsp
if(isp.eq.2) then
@ -482,10 +486,22 @@ contains
llr=llrd
endif
message77=0
dmin=0.0
call timer('bpdec174',0)
call bpdecode174_91(llr,apmask,max_iterations,message77, &
cw,nharderror,niterations)
call timer('bpdec174',1)
if(doosd .and. nharderror.lt.0) then
ndeep=3
if(abs(nfqso-f1).le.napwid) then
ndeep=4
endif
call timer('osd174_91 ',0)
call osd174_91(llr,apmask,ndeep,message77,cw,nharderror,dmin)
call timer('osd174_91 ',1)
endif
if(sum(message77).eq.0) cycle
if( nharderror.ge.0 ) then
message77=mod(message77+rvec,2) ! remove rvec scrambling
@ -508,11 +524,11 @@ contains
if(snr.gt.0.0) then
xsnr=10*log10(snr)-14.8
else
xsnr=-20.0
xsnr=-21.0
endif
nsnr=nint(max(-20.0,xsnr))
nsnr=nint(max(-21.0,xsnr))
xdt=ibest/666.67 - 0.5
!write(21,'(i6.6,i5,2x,f4.1,i6,2x,a37,2x,f4.1,3i3)') nutc,nsnr,xdt,nint(f0),message,sync,iaptype,ipass,isp
!write(21,'(i6.6,i5,2x,f4.1,i6,2x,a37,2x,f4.1,3i3,f5.1)') nutc,nsnr,xdt,nint(f0),message,sync,iaptype,ipass,isp,dmin
call this%callback(sync,nsnr,xdt,f0,message,iaptype,qual)
exit
endif