mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-22 04:11:16 -05:00
Housekeeping.
This commit is contained in:
Steven Franke
parent
0f74741f1d
commit
c0da6ce265
@ -434,8 +434,6 @@ set (wsjt_FSRCS
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lib/extract.f90
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lib/extract4.f90
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lib/extractmessage77.f90
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lib/ft8/extractmessage174.f90
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lib/ft8/extractmessage174_91.f90
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lib/fano232.f90
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lib/fast9.f90
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lib/fast_decode.f90
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@ -466,7 +464,6 @@ set (wsjt_FSRCS
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lib/ft8/ft8b.f90
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lib/ft8/ft8code.f90
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lib/ft8/ft8_downsample.f90
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lib/ft8/ft8sim_fsk.f90
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lib/ft8/ft8sim.f90
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lib/gen4.f90
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lib/gen65.f90
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@ -1316,9 +1313,6 @@ target_link_libraries (ft8code wsjt_fort wsjt_cxx)
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add_executable (ft4code lib/ft4/ft4code.f90 wsjtx.rc)
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target_link_libraries (ft4code wsjt_fort wsjt_cxx)
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add_executable (ft8sim_fsk lib/ft8/ft8sim_fsk.f90 wsjtx.rc)
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target_link_libraries (ft8sim_fsk wsjt_fort wsjt_cxx)
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add_executable (ft8sim lib/ft8/ft8sim.f90 wsjtx.rc)
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target_link_libraries (ft8sim wsjt_fort wsjt_cxx)
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@ -2,23 +2,23 @@ subroutine encode174_91(message77,codeword)
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!
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! Add a 14-bit CRC to a 77-bit message and return a 174-bit codeword
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!
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use, intrinsic :: iso_c_binding
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use iso_c_binding, only: c_loc,c_size_t
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use crc
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use, intrinsic :: iso_c_binding
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use iso_c_binding, only: c_loc,c_size_t
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use crc
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integer, parameter:: N=174, K=91, M=N-K
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character*91 tmpchar
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integer*1 codeword(N)
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integer*1 gen(M,K)
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integer*1 message77(77),message(K)
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integer*1 pchecks(M)
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integer*1, target :: i1MsgBytes(12)
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include "ldpc_174_91_c_generator.f90"
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logical first
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data first/.true./
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save first,gen
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integer, parameter:: N=174, K=91, M=N-K
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character*91 tmpchar
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integer*1 codeword(N)
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integer*1 gen(M,K)
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integer*1 message77(77),message(K)
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integer*1 pchecks(M)
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integer*1, target :: i1MsgBytes(12)
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include "ldpc_174_91_c_generator.f90"
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logical first
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data first/.true./
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save first,gen
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if( first ) then ! fill the generator matrix
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if( first ) then ! fill the generator matrix
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gen=0
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do i=1,M
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do j=1,23
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@ -31,28 +31,28 @@ if( first ) then ! fill the generator matrix
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enddo
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enddo
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enddo
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first=.false.
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endif
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first=.false.
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endif
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! Add 14-bit CRC to form 91-bit message+CRC14
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write(tmpchar,'(77i1)') message77
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tmpchar(78:80)='000'
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i1MsgBytes=0
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read(tmpchar,'(10b8)') i1MsgBytes(1:10)
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ncrc14 = crc14 (c_loc (i1MsgBytes), 12)
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write(tmpchar(78:91),'(b14)') ncrc14
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read(tmpchar,'(91i1)') message
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write(tmpchar,'(77i1)') message77
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tmpchar(78:80)='000'
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i1MsgBytes=0
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read(tmpchar,'(10b8)') i1MsgBytes(1:10)
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ncrc14 = crc14 (c_loc (i1MsgBytes), 12)
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write(tmpchar(78:91),'(b14)') ncrc14
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read(tmpchar,'(91i1)') message
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do i=1,M
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do i=1,M
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nsum=0
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do j=1,K
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nsum=nsum+message(j)*gen(i,j)
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enddo
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pchecks(i)=mod(nsum,2)
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enddo
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enddo
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codeword(1:K)=message
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codeword(K+1:N)=pchecks
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codeword(1:K)=message
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codeword(K+1:N)=pchecks
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return
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return
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end subroutine encode174_91
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@ -2,23 +2,23 @@ subroutine encode174_91_nocrc(message,codeword)
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!
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! Encode a 91-bit message and return a 174-bit codeword.
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!
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use, intrinsic :: iso_c_binding
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use iso_c_binding, only: c_loc,c_size_t
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use crc
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use, intrinsic :: iso_c_binding
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use iso_c_binding, only: c_loc,c_size_t
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use crc
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integer, parameter:: N=174, K=91, M=N-K
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character*91 tmpchar
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integer*1 codeword(N)
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integer*1 gen(M,K)
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integer*1 message(K)
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integer*1 pchecks(M)
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integer*1, target :: i1MsgBytes(12)
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include "ldpc_174_91_c_generator.f90"
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logical first
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data first/.true./
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save first,gen
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integer, parameter:: N=174, K=91, M=N-K
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character*91 tmpchar
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integer*1 codeword(N)
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integer*1 gen(M,K)
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integer*1 message(K)
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integer*1 pchecks(M)
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integer*1, target :: i1MsgBytes(12)
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include "ldpc_174_91_c_generator.f90"
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logical first
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data first/.true./
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save first,gen
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if( first ) then ! fill the generator matrix
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if( first ) then ! fill the generator matrix
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gen=0
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do i=1,M
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do j=1,23
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@ -31,19 +31,19 @@ if( first ) then ! fill the generator matrix
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enddo
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enddo
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enddo
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first=.false.
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endif
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first=.false.
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endif
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do i=1,M
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do i=1,M
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nsum=0
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do j=1,K
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nsum=nsum+message(j)*gen(i,j)
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enddo
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pchecks(i)=mod(nsum,2)
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enddo
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enddo
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codeword(1:K)=message
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codeword(K+1:N)=pchecks
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codeword(1:K)=message
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codeword(K+1:N)=pchecks
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return
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return
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end subroutine encode174_91_nocrc
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@ -1,40 +0,0 @@
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subroutine extractmessage174(decoded,msgreceived,ncrcflag)
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use iso_c_binding, only: c_loc,c_size_t
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use crc
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use packjt
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character*22 msgreceived
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character*87 cbits
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integer*1 decoded(87)
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integer*1, target:: i1Dec8BitBytes(11)
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integer*4 i4Dec6BitWords(12)
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! Write decoded bits into cbits: 75-bit message plus 12-bit CRC
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write(cbits,1000) decoded
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1000 format(87i1)
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read(cbits,1001) i1Dec8BitBytes
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1001 format(11b8)
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read(cbits,1002) ncrc12 !Received CRC12
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1002 format(75x,b12)
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i1Dec8BitBytes(10)=iand(i1Dec8BitBytes(10),transfer(128+64+32,0_1))
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i1Dec8BitBytes(11)=0
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icrc12=crc12(c_loc(i1Dec8BitBytes),11) !CRC12 computed from 75 msg bits
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if(ncrc12.eq.icrc12 .or. sum(decoded(57:87)).eq.0) then !### Kludge ###
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! CRC12 checks out --- unpack 72-bit message
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do ibyte=1,12
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itmp=0
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do ibit=1,6
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itmp=ishft(itmp,1)+iand(1_1,decoded((ibyte-1)*6+ibit))
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enddo
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i4Dec6BitWords(ibyte)=itmp
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enddo
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call unpackmsg(i4Dec6BitWords,msgreceived)
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ncrcflag=1
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else
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msgreceived=' '
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ncrcflag=-1
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endif
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return
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end subroutine extractmessage174
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@ -1,40 +0,0 @@
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subroutine extractmessage174_91(decoded,msgreceived,ncrcflag)
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use iso_c_binding, only: c_loc,c_size_t
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use crc
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use packjt
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character*22 msgreceived
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character*91 cbits
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integer*1 decoded(91)
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integer*1, target:: i1Dec8BitBytes(12)
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integer*4 i4Dec6BitWords(12)
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! Write decoded bits into cbits: 77-bit message plus 14-bit CRC
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write(cbits,1000) decoded
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1000 format(91i1)
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read(cbits,1001) i1Dec8BitBytes
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1001 format(12b8)
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read(cbits,1002) ncrc14 !Received CRC12
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1002 format(77x,b14)
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i1Dec8BitBytes(10)=iand(i1Dec8BitBytes(10),transfer(128+64+32+16+8,0_1))
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i1Dec8BitBytes(11:12)=0
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icrc14=crc14(c_loc(i1Dec8BitBytes),12) !CRC12 computed from 75 msg bits
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if(ncrc14.eq.icrc14 .or. sum(decoded(57:87)).eq.0) then !### Kludge ###
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! CRC14 checks out --- unpack 72-bit message
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do ibyte=1,12
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itmp=0
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do ibit=1,6
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itmp=ishft(itmp,1)+iand(1_1,decoded((ibyte-1)*6+ibit))
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enddo
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i4Dec6BitWords(ibyte)=itmp
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enddo
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call unpackmsg(i4Dec6BitWords,msgreceived)
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ncrcflag=1
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else
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msgreceived=' '
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ncrcflag=-1
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endif
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return
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end subroutine extractmessage174_91
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@ -1,141 +0,0 @@
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program ft8sim
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! Generate simulated "type 2" ft8 files
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! Output is saved to a *.wav file.
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use wavhdr
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use packjt77
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include 'ft8_params.f90' !Set various constants
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parameter (NWAVE=NN*NSPS)
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type(hdr) h !Header for .wav file
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character arg*12,fname*17
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character msg37*37,msgsent37*37
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character c77*77
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complex c0(0:NMAX-1)
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complex c(0:NMAX-1)
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real wave(NMAX)
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integer itone(NN)
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integer*1 msgbits(77)
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integer*2 iwave(NMAX) !Generated full-length waveform
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! Get command-line argument(s)
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nargs=iargc()
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if(nargs.ne.8) then
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print*,'Usage: ft8sim "message" f0 DT fdop del width nfiles snr'
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print*,'Examples: ft8sim "K1ABC W9XYZ EN37" 1500.0 0.0 0.1 1.0 0 10 -18'
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print*,' ft8sim "WA9XYZ/R KA1ABC/R FN42" 1500.0 0.0 0.1 1.0 0 10 -18'
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print*,' ft8sim "K1ABC RR73; W9XYZ <KH1/KH7Z> -11" 300 0 0 0 25 1 -10'
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go to 999
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endif
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call getarg(1,msg37) !Message to be transmitted
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call getarg(2,arg)
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read(arg,*) f0 !Frequency (only used for single-signal)
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call getarg(3,arg)
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read(arg,*) xdt !Time offset from nominal (s)
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call getarg(4,arg)
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read(arg,*) fspread !Watterson frequency spread (Hz)
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call getarg(5,arg)
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read(arg,*) delay !Watterson delay (ms)
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call getarg(6,arg)
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read(arg,*) width !Filter transition width (Hz)
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call getarg(7,arg)
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read(arg,*) nfiles !Number of files
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call getarg(8,arg)
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read(arg,*) snrdb !SNR_2500
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nsig=1
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if(f0.lt.100.0) then
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nsig=f0
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f0=1500
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endif
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nfiles=abs(nfiles)
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twopi=8.0*atan(1.0)
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fs=12000.0 !Sample rate (Hz)
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dt=1.0/fs !Sample interval (s)
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tt=NSPS*dt !Duration of symbols (s)
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baud=1.0/tt !Keying rate (baud)
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bw=8*baud !Occupied bandwidth (Hz)
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txt=NZ*dt !Transmission length (s)
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bandwidth_ratio=2500.0/(fs/2.0)
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sig=sqrt(2*bandwidth_ratio) * 10.0**(0.05*snrdb)
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if(snrdb.gt.90.0) sig=1.0
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txt=NN*NSPS/12000.0
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! Source-encode, then get itone()
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i3=-1
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n3=-1
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call pack77(msg37,i3,n3,c77)
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call genft8(msg37,i3,n3,msgsent37,msgbits,itone)
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write(*,*)
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write(*,'(a23,a37,3x,a7,i1,a1,i1)') 'New Style FT8 Message: ',msgsent37,'i3.n3: ',i3,'.',n3
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write(*,1000) f0,xdt,txt,snrdb,bw
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1000 format('f0:',f9.3,' DT:',f6.2,' TxT:',f6.1,' SNR:',f6.1, &
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' BW:',f4.1)
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write(*,*)
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if(i3.eq.1) then
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write(*,*) ' mycall hiscall hisgrid'
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write(*,'(28i1,1x,i1,1x,28i1,1x,i1,1x,i1,1x,15i1,1x,3i1)') msgbits(1:77)
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else
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write(*,'(a14)') 'Message bits: '
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write(*,'(77i1)') msgbits
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endif
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write(*,*)
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write(*,'(a17)') 'Channel symbols: '
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write(*,'(79i1)') itone
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write(*,*)
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call sgran()
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msg0=msg
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do ifile=1,nfiles
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k=nint((xdt+0.5)/dt)
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ia=max(1,k)
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phi=0.0
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c0=0.0
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do j=1,NN !Generate complex waveform
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dphi=twopi*(f0*dt+itone(j)/real(NSPS))
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do i=1,NSPS
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if(k.ge.0 .and. k.lt.NMAX) c0(k)=cmplx(cos(phi),sin(phi))
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k=k+1
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phi=mod(phi+dphi,twopi)
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enddo
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enddo
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if(fspread.ne.0.0 .or. delay.ne.0.0) call watterson(c0,NMAX,NWAVE,fs,delay,fspread)
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c=sig*c0
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ib=min(k,NMAX)
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wave=real(c)
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peak=maxval(abs(wave(ia:ib)))
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nslots=1
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if(width.gt.0.0) call filt8(f0,nslots,width,wave)
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if(snrdb.lt.90) then
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do i=1,NMAX !Add gaussian noise at specified SNR
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xnoise=gran()
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wave(i)=wave(i) + xnoise
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enddo
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endif
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gain=100.0
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if(snrdb.lt.90.0) then
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wave=gain*wave
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else
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datpk=maxval(abs(wave))
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fac=32766.9/datpk
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wave=fac*wave
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endif
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if(any(abs(wave).gt.32767.0)) print*,"Warning - data will be clipped."
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iwave=nint(wave)
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h=default_header(12000,NMAX)
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write(fname,1102) ifile
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1102 format('000000_',i6.6,'.wav')
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open(10,file=fname,status='unknown',access='stream')
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write(10) h,iwave !Save to *.wav file
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close(10)
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write(*,1110) ifile,xdt,f0,snrdb,fname
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1110 format(i4,f7.2,f8.2,f7.1,2x,a17)
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enddo
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999 end program ft8sim
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