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Merge branch 'develop' into qmap

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This commit is contained in:
Joe Taylor 2024-01-26 09:21:43 -05:00
commit d67a406bf0
3 changed files with 191 additions and 49 deletions
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9
lib/fst4/fastosd240_74.f90
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@ -171,15 +171,15 @@ subroutine fastosd240_74(llr,k,apmask,ndeep,message74,cw,nhardmin,dmin)
if( ndeep.eq. 1) then
nord=1
xlambda=0.0
nsyncmax=np
nsyndmax=np
elseif(ndeep.eq.2) then
nord=2
xlambda=0.0
nsyncmax=np
nsyndmax=np
elseif(ndeep.eq.3) then
nord=3
xlambda=4.0
nsyncmax=11
nsyndmax=11
elseif(ndeep.eq.4) then
nord=4
xlambda=3.4
@ -190,7 +190,6 @@ subroutine fastosd240_74(llr,k,apmask,ndeep,message74,cw,nhardmin,dmin)
s2=sum(absrx(k+1:N))
rho=s1/(s1+xlambda*s2)
rhodmin=rho*dmin
nerr64=-1
do iorder=1,nord
!beta=0.0
!if(iorder.ge.3) beta=0.4
@ -216,7 +215,6 @@ subroutine fastosd240_74(llr,k,apmask,ndeep,message74,cw,nhardmin,dmin)
cw=ce
nhardmin=sum(nxor)
nwhspmin=nwhsp
nerr64=sum(nxor(1:K))
endif
endif
! Get the next test error pattern, iflag will go negative
@ -224,7 +222,6 @@ subroutine fastosd240_74(llr,k,apmask,ndeep,message74,cw,nhardmin,dmin)
call nextpat74(mi,k,iorder,iflag)
enddo
enddo
998 continue
! Re-order the codeword to [message bits][parity bits] format.
cw(indices)=cw

227
lib/fst4/ldpcsim240_74.f90
View File

@ -4,33 +4,47 @@ program ldpcsim240_74
use packjt77
parameter(N=240, K=74, M=N-K)
parameter(N=240, NN=120)
character*8 arg
character*37 msg0
character*37 msg0,msgsent,msg
character*77 c77
character*24 c24
integer*1 msgbits(74)
integer*1 msgbits(101)
integer*1 apmask(240)
integer*1 cw(240)
integer*1 codeword(N),message74(74)
integer ncrc24
real rxdata(N),llr(N)
integer modtype, graymap(0:3)
integer*4 itone(120)
integer channeltype
integer lmax(1)
real rxdata(N)
real llr(240)
real bitmetrics(2*NN,4)
complex c1(4,8),c2(16,4),c4(256,2),cs(0:3,NN)
real s2(0:65535)
logical one(0:65535,0:15) ! 65536 8-symbol sequences, 16 bits
logical first
data first/.true./
data graymap/0,1,3,2/
nargs=iargc()
if(nargs.ne.5 .and. nargs.ne.6) then
print*,'Usage: ldpcsim niter ndeep #trials s K [msg]'
print*,'e.g. ldpcsim240_74 20 5 1000 0.85 64 "K9AN K1JT FN20"'
if(nargs.ne.7 .and. nargs.ne.8) then
print*,'Usage: ldpcsim maxosd norder #trials s Keff modtype channel '
print*,'e.g. ldpcsim240_74 2 4 1000 0.85 50 1 0'
print*,'s : if negative, then value is ignored and sigma is calculated from SNR.'
print*,'niter: is the number of BP iterations.'
print*,'ndeep: -1 is BP only, ndeep>=0 is OSD order'
print*,'K :is the number of message+CRC bits and must be in the range [50,74]'
print*,'maxosd<0: do bp only'
print*,'maxosd=0: do bp and then call osd once with channel llrs.'
print*,'maxosd>0: do bp and then call osc maxosd times with saved bp outputs.'
print*,'norder : osd decoding depth'
print*,'Keff : # of message bits, Keff must be in the range 50:74'
print*,'modtype : 0 coherent BPSK, 1 4FSK'
print*,'channel : 0 AWGN, 1 Rayleigh (4FSK only)'
print*,'WSPR-format message is optional'
return
endif
call getarg(1,arg)
read(arg,*) max_iterations
read(arg,*) maxosd
call getarg(2,arg)
read(arg,*) norder
call getarg(3,arg)
@ -39,17 +53,26 @@ program ldpcsim240_74
read(arg,*) s
call getarg(5,arg)
read(arg,*) Keff
msg0='K9AN K1JT FN20 '
if(nargs.eq.6) call getarg(6,msg0)
call getarg(6,arg)
read(arg,*) modtype
call getarg(7,arg)
read(arg,*) channeltype
call getarg(8,arg)
msg0='K9AN EN50 20 '
call pack77(msg0,i3,n3,c77)
rate=real(Keff)/real(N)
write(*,*) "code rate: ",rate
write(*,*) "niter : ",max_iterations
write(*,*) "maxosd : ",maxosd
write(*,*) "norder : ",norder
write(*,*) "s : ",s
write(*,*) "K : ",Keff
if(modtype.eq.0) write(*,*) "modtype : coherent BPSK"
if(modtype.eq.1) write(*,*) "modtype : noncoherent 4FSK"
if(channeltype.eq.0) write(*,*) "channel : AWGN"
if(channeltype.eq.1) write(*,*) "channel : Rayleigh"
msgbits=0
read(c77,'(50i1)') msgbits(1:50)
@ -59,49 +82,170 @@ program ldpcsim240_74
call get_crc24(msgbits,74,ncrc24)
write(c24,'(b24.24)') ncrc24
read(c24,'(24i1)') msgbits(51:74)
write(*,'(24i1)') msgbits(51:74)
write(*,'(24i1)') msgbits(51:74)
write(*,*) 'message with crc24'
write(*,'(74i1)') msgbits(1:74)
call encode240_74(msgbits,codeword)
call init_random_seed()
call sgran()
call encode240_74(msgbits(1:74),codeword)
do i=1,120
is=codeword(2*i)+2*codeword(2*i-1)
itone(i)=graymap(is)
enddo
write(*,*) 'codeword'
write(*,'(77i1,1x,24i1,1x,73i1)') codeword
write(*,*) "Eb/N0 Es/N0 ngood nundetected sigma symbol error rate"
do idb = 8,-3,-1
! call init_random_seed()
! call sgran()
one=.false.
do i=0,65535
do j=0,15
if(iand(i,2**j).ne.0) one(i,j)=.true.
enddo
enddo
write(*,*) "Eb/N0 Es/N0 ngood nundetected symbol error rate"
do idb = 24,-8,-1
db=idb/2.0-1.0
sigma=1/sqrt( 2*rate*(10**(db/10.0)) ) ! to make db represent Eb/No
sigma=1/sqrt( 2*rate*iq*(10**(db/10.0)) ) ! to make db represent Eb/No
! sigma=1/sqrt( 2*(10**(db/10.0)) ) ! db represents Es/No
ngood=0
nue=0
nberr=0
nsymerr=0
do itrial=1, ntrials
! Create a realization of a noisy received word
do i=1,N
rxdata(i) = 2.0*codeword(i)-1.0 + sigma*gran()
enddo
nerr=0
do i=1,N
if( rxdata(i)*(2*codeword(i)-1.0) .lt. 0 ) nerr=nerr+1
enddo
nberr=nberr+nerr
if(modtype.eq.0) then
iq = 1 ! bits per symbol
sigma=1/sqrt( 2*rate*iq*(10**(db/10.0)) ) ! to make db represent Eb/No
do i=1,N
rxdata(i) = 2.0*codeword(i)-1.0 + sigma*gran()
enddo
nerr=0
do i=1,N
if( rxdata(i)*(2*codeword(i)-1.0) .lt. 0 ) nerr=nerr+1
enddo
nberr=nberr+nerr
rxav=sum(rxdata)/N
rx2av=sum(rxdata*rxdata)/N
rxsig=sqrt(rx2av-rxav*rxav)
rxdata=rxdata/rxsig
if( s .lt. 0 ) then
ss=sigma
rxav=sum(rxdata)/N
rx2av=sum(rxdata*rxdata)/N
rxsig=sqrt(rx2av-rxav*rxav)
rxdata=rxdata/rxsig
if( s .lt. 0 ) then
ss=sigma
else
ss=s
endif
llr=2.0*rxdata/(ss*ss)
else
ss=s
! noncoherent MFSK
iq = 2 ! bits per symbol
sigma=1/sqrt( 2*rate*iq*(10**(db/10.0)) ) ! to make db represent Eb/No
A=1
do i=1,120
do j=0,3
if(j.eq.itone(i)) then
if(channeltype.eq.0) then
A=1.0
elseif(channeltype.eq.1) then
xI=gran()**2+gran()**2
A=sqrt(xI/2)
endif
cs(j,i)= A + sigma*gran() + cmplx(0,1)*sigma*gran()
elseif(j.ne.itone(i)) then
cs(j,i)= sigma*gran() + cmplx(0,1)*sigma*gran()
endif
enddo
lmax=maxloc(abs(cs(:,i)))
if(lmax(1)-1.ne.itone(i) ) nsymerr=nsymerr+1
enddo
do k=1,NN,8
do m=1,8 ! do 4 1-symbol correlations for each of 8 symbs
s2=0
do is=1,4
c1(is,m)=cs(graymap(is-1),k+m-1)
s2(is-1)=abs(c1(is,m))
enddo
ipt=(k-1)*2+2*(m-1)+1
do ib=0,1
bm=maxval(s2(0:3),one(0:3,1-ib)) - &
maxval(s2(0:3),.not.one(0:3,1-ib))
if(ipt+ib.gt.2*NN) cycle
bitmetrics(ipt+ib,1)=bm
enddo
enddo
do m=1,4 ! do 16 2-symbol correlations for each of 4 2-symbol groups
s2=0
do i=1,4
do j=1,4
is=(i-1)*4+j
c2(is,m)=c1(i,2*m-1)+c1(j,2*m)
s2(is-1)=abs(c2(is,m))**2
enddo
enddo
ipt=(k-1)*2+4*(m-1)+1
do ib=0,3
bm=maxval(s2(0:15),one(0:15,3-ib)) - &
maxval(s2(0:15),.not.one(0:15,3-ib))
if(ipt+ib.gt.2*NN) cycle
bitmetrics(ipt+ib,2)=bm
enddo
enddo
do m=1,2 ! do 256 4-symbol corrs for each of 2 4-symbol groups
s2=0
do i=1,16
do j=1,16
is=(i-1)*16+j
c4(is,m)=c2(i,2*m-1)+c2(j,2*m)
s2(is-1)=abs(c4(is,m))
enddo
enddo
ipt=(k-1)*2+8*(m-1)+1
do ib=0,7
bm=maxval(s2(0:255),one(0:255,7-ib)) - &
maxval(s2(0:255),.not.one(0:255,7-ib))
if(ipt+ib.gt.2*NN) cycle
bitmetrics(ipt+ib,3)=bm
enddo
enddo
s2=0 ! do 65536 8-symbol correlations for the entire group
do i=1,256
do j=1,256
is=(i-1)*256+j
s2(is-1)=abs(c4(i,1)+c4(j,2))
enddo
enddo
ipt=(k-1)*2+1
do ib=0,15
bm=maxval(s2(0:65535),one(0:65535,15-ib)) - &
maxval(s2(0:65535),.not.one(0:65535,15-ib))
if(ipt+ib.gt.2*NN) cycle
bitmetrics(ipt+ib,4)=bm
enddo
enddo
call normalizebmet(bitmetrics(:,1),2*NN)
call normalizebmet(bitmetrics(:,2),2*NN)
call normalizebmet(bitmetrics(:,3),2*NN)
call normalizebmet(bitmetrics(:,4),2*NN)
scalefac=2.83
bitmetrics=scalefac*bitmetrics
llr=bitmetrics(:,1)
endif
llr=2.0*rxdata/(ss*ss)
apmask=0
dmin=0.0
maxosd=2
call decode240_74(llr, Keff, maxosd, norder, apmask, message74, cw, ntype, nharderror, dmin)
if(nharderror.ge.0) then
n2err=0
@ -116,9 +260,10 @@ write(*,'(24i1)') msgbits(51:74)
endif
enddo
! snr2500=db+10*log10(200.0/116.0/2500.0)
esn0=db+10*log10(rate)
pberr=real(nberr)/(real(ntrials*N))
write(*,"(f4.1,4x,f5.1,1x,i8,1x,i8,8x,e10.3)") db,esn0,ngood,nue,pberr
esn0=db+10*log10(rate*iq)
pberr=real(nberr)/real(ntrials*N)
pserr=real(nsymerr)/real(ntrials*120)
write(*,"(f4.1,4x,f5.1,1x,i8,1x,i8,8x,e10.3)") db,esn0,ngood,nue,pserr
enddo

4
widgets/mainwindow.cpp
View File

@ -4264,7 +4264,7 @@ void MainWindow::readFromStdout() //readFromStdout
if((abs(audioFreq - m_wideGraph->rxFreq()) <= 10) and
!m_config.enable_VHF_features()) bDisplayRight=true;
}
if(m_mode=="Q65" and !bAvgMsg) bDisplayRight=false;
if(m_mode=="Q65" and !bAvgMsg and !decodedtext.string().contains(m_baseCall)) bDisplayRight=false;
if((m_mode=="JT4" or m_mode=="Q65" or m_mode=="JT65") and decodedtext.string().contains(m_baseCall) && ui->actionInclude_averaging->isVisible() && !ui->actionInclude_averaging->isChecked()) bDisplayRight=true;
if (bDisplayRight) {
@ -6409,7 +6409,7 @@ void MainWindow::lookup()
{
QString hisCall {ui->dxCallEntry->text()};
QString hisgrid0 {ui->dxGridEntry->text()};
if (!hisCall.size ()) return;
if (!hisCall.size () or (!(m_specOp==SpecOp::NONE or m_specOp==SpecOp::HOUND or m_specOp==SpecOp::Q65_PILEUP))) return;
QFile f {m_config.writeable_data_dir ().absoluteFilePath ("CALL3.TXT")};
if (f.open (QIODevice::ReadOnly | QIODevice::Text))
{