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Changes to a test program.

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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8209 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Steven Franke 2017-11-02 16:11:07 +00:00
parent 58fbdbd69c
commit 207aefb8d0
1 changed files with 59 additions and 25 deletions
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84
lib/fsk4hf/gf64_osd.f90
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@ -1,13 +1,18 @@
subroutine gf64_osd(mrsym,mrprob,mr2sym,mr2prob,cw) subroutine gf64_osd(s3,cw)
use jt65_generator_matrix use jt65_generator_matrix
integer mrsym(63),mrprob(63),mr2sym(63),mr2prob(63),cw(63)
real s3(64,63),xtmp(64),sympow_sorted(64,63),sympow(64,63)
integer ideinterleave_indices(63),indxs(64),isymval_sorted(64,63),isymval(64,63)
integer cw(63)
integer indx(63) integer indx(63)
integer gmrb(12,63) integer gmrb(12,63)
integer correct(63) integer correct(63)
integer correctr(63) integer correctr(63)
integer correct_sorted(63)
integer candidate(63) integer candidate(63)
integer candidater(63) integer candidater(63)
logical mask(63) integer itmp(63)
logical mask(63),first
data correct/ & ! K1ABC W9XYZ EN37 data correct/ & ! K1ABC W9XYZ EN37
41, 0, 54, 46, 55, 29, 57, 35, 35, 48, 48, 61, & 41, 0, 54, 46, 55, 29, 57, 35, 35, 48, 48, 61, &
21, 58, 25, 10, 50, 43, 28, 37, 10, 2, 61, 55, & 21, 58, 25, 10, 50, 43, 28, 37, 10, 2, 61, 55, &
@ -15,40 +20,69 @@ subroutine gf64_osd(mrsym,mrprob,mr2sym,mr2prob,cw)
44, 55, 34, 38, 50, 62, 52, 58, 17, 62, 35, 34, & 44, 55, 34, 38, 50, 62, 52, 58, 17, 62, 35, 34, &
28, 21, 15, 47, 33, 20, 15, 28, 58, 4, 58, 61, & 28, 21, 15, 47, 33, 20, 15, 28, 58, 4, 58, 61, &
59, 42, 2/ 59, 42, 2/
data first/.true./
save first,correctr
correctr=correct(63:1:-1) if(first) then
call indexx(mrprob,63,indx) correctr=correct(63:1:-1)
! do i=1,63 ! find indices of deinterleaved symbols
! write(*,*) i,correctr(indx(i)),mrsym(indx(i)),mr2sym(indx(i)) do i=1,63
! enddo ideinterleave_indices(i)=i
enddo
call interleave63(ideinterleave_indices,-1)
first=.false.
endif
! Sort the spectral powers in decreasing order, remove gray code
do i=1,63
xtmp=s3(:,i)
call indexx(xtmp,64,indxs)
sympow_sorted(:,i)=xtmp(indxs(64:1:-1))
indxs=indxs-1
call graycode65(indxs,64,-1)
isymval_sorted(:,i)=indxs(64:1:-1)
enddo
! Deinterleave symbols symbol powers.
do i=1,63
isymval(:,i)=isymval_sorted(:,ideinterleave_indices(i))
sympow(:,i)=sympow_sorted(:,ideinterleave_indices(i))
enddo
nhard=count(mrsym.ne.correctr) ! Now sort along the symbol index, using the largest spectral power at each index
nerrtop12=count(mrsym(indx(52:63)).ne.correctr(indx(52:63))) xtmp(1:63)=sympow(1,1:63)
nerrnext12=count(mrsym(indx(40:51)).ne.correctr(indx(40:51))) call indexx(xtmp(1:63),63,indx)
write(*,*) 'nerr, nerrtop12, nerrnext12 ',nerr,nerrtop12,nerrnext12
! Calculate some statistics
nhard=count(isymval(1,:).ne.correctr)
nerrtop4=count(isymval(1,indx(60:63)).ne.correctr(indx(60:63)))
nerrmid4=count(isymval(1,indx(56:59)).ne.correctr(indx(56:59)))
nerrbot4=count(isymval(1,indx(52:55)).ne.correctr(indx(52:55)))
do i=1,12
if(isymval(1,indx(64-i)).ne.correctr(indx(64-i))) then
write(*,'(i2,1x,64l1)') i,isymval(:,indx(64-i)).eq.correctr(indx(64-i))
endif
enddo
write(*,*) 'nerr, nerrtop4, nerrmid4, nerrbot4',nhard,nerrtop4,nerrmid4,nerrbot4
! The best 12 symbols will be used as the Most Reliable Basis ! The best 12 symbols will be used as the Most Reliable Basis
! Reorder the columns of the generator matrix in order of decreasing quality. ! Reorder the columns of the generator matrix in order of decreasing quality.
do i=1,63 ! do i=1,63
gmrb(:,i)=g(:,indx(63+1-i)) ! indx=isymval(64,63+1-i)+1
enddo ! gmrb(:,i)=g(:,indx(63+1-i))
! enddo
! Put the generator matrix in standard form so that top 12 symbols are ! Put the generator matrix in standard form so that top 12 symbols are
! encoded systematically. ! encoded systematically.
call gf64_standardize_genmat(gmrb) ! call gf64_standardize_genmat(gmrb)
! Add various error patterns to the 12 basis symbols and reencode each one ! Add various error patterns to the 12 basis symbols and reencode each one
! to get a list of codewords. For now, just find the zero'th order codeword. ! to get a list of codewords. For now, just find the zero'th order codeword.
call gf64_encode(gmrb,mrsym(indx(63:52:-1)),candidate) ! call gf64_encode(gmrb,isymval(64,indx(63:52:-1)),candidate)
! Undo the sorting to put the codeword symbols back into the "right" order. ! Undo the sorting to put the codeword symbols back into the "right" order.
candidater=candidate(63:1:-1) ! candidater=candidate(63:1:-1)
candidate(indx)=candidater ! candidate(indx)=candidater
!write(*,'(63i3)') candidate ! nerr=count(correctr.ne.candidate)
!write(*,'(63i3)') correctr !write(*,*) 'Number of differences between candidate and correct codeword: ',nerr
!write(*,'(63i3)') mrsym ! if( nerr .eq. 0 ) write(*,*) 'Successful decode'
nerr=count(correctr.ne.candidate)
write(*,*) 'Number of differences between candidate and correct codeword: ',nerr
if( nerr .eq. 0 ) write(*,*) 'Successful decode'
return return
end subroutine gf64_osd end subroutine gf64_osd