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Adjust a 3 dB offset in Q65 SNRs from list decodes.

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This commit is contained in:
Joe Taylor 2020-12-20 21:42:42 -05:00
parent 3cb5cb8c04
commit ddf727f351
1 changed files with 1 additions and 1 deletions
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lib/q65_sync.f90
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@ -182,7 +182,7 @@ subroutine q65_sync(nutc,iwave,nmax,mode_q65,codewords,ncw,nsps,nfqso,ntol, &
call q65_intrinsics_ff(s3,nsubmode,b90/baud,nFadingModel,s3prob) call q65_intrinsics_ff(s3,nsubmode,b90/baud,nFadingModel,s3prob)
call q65_dec_fullaplist(s3,s3prob,codewords,ncw,esnodb,dat4,plog,irc) call q65_dec_fullaplist(s3,s3prob,codewords,ncw,esnodb,dat4,plog,irc)
if(irc.ge.0 .and. plog.ge.PLOG_MIN) then if(irc.ge.0 .and. plog.ge.PLOG_MIN) then
snr2=esnodb - db(2500.0/baud) snr2=esnodb - db(2500.0/baud) + 3.0 !Empirical adjustment
id1=1 id1=1
write(c77,1000) dat4(1:12),dat4(13)/2 write(c77,1000) dat4(1:12),dat4(13)/2
1000 format(12b6.6,b5.5) 1000 format(12b6.6,b5.5)