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https://github.com/saitohirga/WSJT-X.git
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Use Joe's sync vector.
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Steven Franke
parent
2f7afbc34e
commit
1044342245
@ -8,7 +8,8 @@ subroutine genwsprcpm(msg,msgsent,itone)
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character*22 msg,msgsent
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character*64 cbits
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character*32 sbits
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integer iuniqueword0
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character c1*1,c4*4
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character*31 cseq
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integer*1,target :: idat(9)
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integer*1 msgbits(68),codeword(ND)
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logical first
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@ -18,20 +19,25 @@ subroutine genwsprcpm(msg,msgsent,itone)
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integer ipreamble(16) !Freq estimation preamble
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integer isync(200) !Long sync vector
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integer itone(NN)
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data cseq /'9D9F C48B 797A DD60 58CB 2EBC 6'/
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data ipreamble/1,1,1,1,0,0,0,0,0,0,0,0,1,1,1,1/
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data first/.true./
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data iuniqueword0/z'30C9E8AD'/
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save first,isync,ipreamble
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if(first) then
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write(sbits,'(b32.32)') iuniqueword0
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read(sbits,'(32i1)') isync(1:32)
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read(sbits,'(32i1)') isync(33:64)
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read(sbits,'(32i1)') isync(65:96)
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read(sbits,'(32i1)') isync(97:128)
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read(sbits,'(32i1)') isync(129:160)
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read(sbits,'(32i1)') isync(161:192)
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read(sbits,'(8i1)') isync(193:200)
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k=0
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do i=1,31
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c1=cseq(i:i)
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if(c1.eq.' ') cycle
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read(c1,'(z1)') n
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write(c4,'(b4.4)') n
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do j=1,4
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k=k+1
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isync(k)=0
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if(c4(j:j).eq.'1') isync(k)=1
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enddo
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isync(101:200)=isync(1:100)
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enddo
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first=.false.
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endif
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@ -62,9 +68,6 @@ subroutine genwsprcpm(msg,msgsent,itone)
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itone(101:116)=ipreamble+1
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itone(117:216)=isync(101:200)+2*codeword(101:200)
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itone=2*itone-3
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do i=1,216
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write(*,*) i,itone(i)
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enddo
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return
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end subroutine genwsprcpm
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@ -16,6 +16,7 @@ program wsprcpmd
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include 'wsprcpm_params.f90'
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parameter(NMAX=120*12000)
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character arg*8,message*22,cbits*50,infile*80,fname*16,datetime*11
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character ch1*1,ch4*4,cseq*31
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character*22 decodes(100)
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character*120 data_dir
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character*32 uwbits
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@ -42,16 +43,22 @@ program wsprcpmd
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integer*1 decoded(68),apmask(204),cw(204)
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integer*1 hbits(216),hbits1(216),hbits3(216)
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data ipreamble/1,1,1,1,0,0,0,0,0,0,0,0,1,1,1,1/
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data cseq /'9D9F C48B 797A DD60 58CB 2EBC 6'/
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data iuniqueword0/z'30C9E8AD'/
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write(uwbits,'(b32.32)') iuniqueword0
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read(uwbits,'(32i1)') isync(1:32)
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read(uwbits,'(32i1)') isync(33:64)
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read(uwbits,'(32i1)') isync(65:96)
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read(uwbits,'(32i1)') isync(97:128)
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read(uwbits,'(32i1)') isync(129:160)
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read(uwbits,'(32i1)') isync(161:192)
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read(uwbits,'(8i1)') isync(193:200)
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k=0
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do i=1,31
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ch1=cseq(i:i)
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if(ch1.eq.' ') cycle
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read(ch1,'(z1)') n
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write(ch4,'(b4.4)') n
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do j=1,4
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k=k+1
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isync(k)=0
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if(ch4(j:j).eq.'1') isync(k)=1
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enddo
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enddo
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isync(101:200)=isync(1:100)
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fs=12000.0/NDOWN !Sample rate
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dt=1.0/fs !Sample interval (s)
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@ -93,6 +100,7 @@ program wsprcpmd
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isync2(113:116)=0
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isync2(117:216)=isync(101:200)
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! data MSB
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! data sync tone
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! 0 0 0
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! 0 1 1
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@ -104,8 +112,10 @@ program wsprcpmd
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if(j.eq.0) then
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dphi0=-3*dphi
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dphi1=+1*dphi
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! dphi1=-1*dphi data LSB
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else
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dphi0=-1*dphi
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! dphi0=+1*dphi data LSB
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dphi1=+3*dphi
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endif
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phi0=0.0
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@ -247,7 +257,7 @@ program wsprcpmd
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sbits=sbits3
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hbits=hbits3
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endif
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if( count(hbits(101:116).ne.ipreamble) .gt.7 ) cycle
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! if( count(hbits(101:116).ne.ipreamble) .gt.7 ) cycle
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rxdata(1:100)=sbits(1:100)
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rxdata(101:200)=sbits(117:216);
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@ -343,7 +353,6 @@ subroutine coherent_preamble_fsync(c2,h,ipreamble,nsync,nsps,istart,fc,imode,xma
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enddo
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first=.false.
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endif
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dphi=twopi*fc*dt
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ctwkp=cmplx(0.0,0.0)
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phi=0
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@ -355,12 +364,13 @@ subroutine coherent_preamble_fsync(c2,h,ipreamble,nsync,nsps,istart,fc,imode,xma
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ctmp1=0.0
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xmax=0.0
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if(imode.eq.1) then !refine DT with given fc
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do iii=-40,40,5
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do iii=-50,50,5
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ctmp1(0:16*200-1)=c2(ipstart+iii:ipstart+iii+16*200-1)*conjg(ctwkp)
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xx=abs(sum(ctmp1))
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if(xx.gt.xmax) then
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xnorm=sqrt(sum(abs(ctmp1(0:16*200-1))**2))*sqrt(16.0*200.0)
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xc=abs(sum(ctmp1))/xnorm
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if(xc.gt.xmax) then
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iiibest=iii
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xmax=xx
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xmax=xc
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endif
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enddo
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istart=istart+iiibest
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@ -368,6 +378,8 @@ subroutine coherent_preamble_fsync(c2,h,ipreamble,nsync,nsps,istart,fc,imode,xma
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endif
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! else refine fc with given DT
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ctmp1(0:16*200-1)=c2(ipstart:ipstart+16*200-1)*conjg(ctwkp)
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xnorm=sqrt(sum(abs(ctmp1(0:16*200-1))**2))*sqrt(16.0*200.0)
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ctmp1=ctmp1/xnorm
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call four2a(ctmp1,4*16*200,1,-1,1) !c2c FFT to freq domain
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xmax=0.0
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ctmp1=cshift(ctmp1,-200)
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@ -421,7 +433,6 @@ subroutine noncoherent_frame_sync(c2,h,fc,isync2,istart,ssmax)
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th3=mod(th3+dp3,twopi)
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enddo
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ss=0.0
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totp=0.0
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avp=0.0
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xc=0.0
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do is=1,216
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@ -435,21 +446,27 @@ subroutine noncoherent_frame_sync(c2,h,fc,isync2,istart,ssmax)
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p2=sqrt(p2)
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p3=sqrt(p3)
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totp=totp+p0+p1+p2+p3
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avp=avp+(p0+p1+p2+p3)/4.0
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! cmet=(p1+p3)-(p0+p2)
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cmet=max(p1,p3)-max(p0,p2) ! This works better near threshold SNR
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if(isync2(is).eq.0) ss=ss-cmet
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if(isync2(is).eq.1) ss=ss+cmet
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if(isync2(is).eq.0) xc=xc+max(p0,p2)
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if(isync2(is).eq.1) xc=xc+max(p1,p3)
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if(is.le.100 .or. is.ge.117) then
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if(isync2(is).eq.0) then
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xc=xc+max(p0,p2)
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avp=avp+(p1+p3)/2.0
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elseif(isync2(is).eq.1) then
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xc=xc+max(p1,p3)
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avp=avp+(p2+p4)/2.0
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endif
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else
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if(isync2(is).eq.0) then
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xc=xc+p2
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avp=avp+(p0+p1+p3)/3.0
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elseif(isync2(is).eq.1) then
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xc=xc+p1
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avp=avp+(p0+p2+p4)/3.0
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endif
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endif
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enddo
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ss=ss/totp
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sy=xc/avp
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! if(ss.gt.ssmax) then
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if(sy.gt.ssmax) then
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ioffset=it
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! ssmax=ss
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ssmax=sy
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endif
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enddo
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@ -544,7 +561,7 @@ subroutine getcandidate2(c,npts,fs,fa,fb,ncand,candidates)
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(bigspec(i).gt.1.15).and.ncand.lt.100) then
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ncand=ncand+1
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candidates(ncand,1)=df*(i-NH2)
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candidates(ncand,2)=10*log10(bigspec(i)-1)-30.0
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candidates(ncand,2)=10*log10(bigspec(i)-1)-26.0
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endif
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enddo
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return
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@ -19,7 +19,7 @@ program wsprcpmsim
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nargs=iargc()
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if(nargs.ne.9) then
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print*,'Usage: wsprcpmsim "message" f0 DT fsp del nwav nfiles snr h'
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print*,'Example: wsprcpmsim "K1ABC FN42 30" 50 0.0 0.1 1.0 1 10 -33 1.0'
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print*,'Example: wsprcpmsim "K1ABC FN42 30" 50 1.0 0.1 1.0 1 10 -32 1.0'
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go to 999
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endif
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call getarg(1,msg) !Message to be transmitted
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@ -59,6 +59,7 @@ program wsprcpmsim
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c0=0.
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k=-1 + nint(xdt/dt)
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do j=1,NN
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write(*,*) j,itone(j)
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dp=twopi*(f0+itone(j)*(h/2.0)*baud)*dt
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do i=1,NSPS
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k=k+1
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