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author | anastas | 2009-03-24 13:11:18 +0000 |
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committer | anastas | 2009-03-24 13:11:18 +0000 |
commit | d9a4ecedfcd777262cde70554d6e6a7b4f0657c0 (patch) | |
tree | 0ca1d4088cb31ac4e4ca7e08d9dc348aa737c417 /gr-trellis/src/lib/fsm.cc | |
parent | 4038332cdd92ab3050682e5d55a596aabb0ab806 (diff) | |
download | gnuradio-d9a4ecedfcd777262cde70554d6e6a7b4f0657c0.tar.gz gnuradio-d9a4ecedfcd777262cde70554d6e6a7b4f0657c0.tar.bz2 gnuradio-d9a4ecedfcd777262cde70554d6e6a7b4f0657c0.zip |
added a radix-n fsm constructor
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@10673 221aa14e-8319-0410-a670-987f0aec2ac5
Diffstat (limited to 'gr-trellis/src/lib/fsm.cc')
-rw-r--r-- | gr-trellis/src/lib/fsm.cc | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/gr-trellis/src/lib/fsm.cc b/gr-trellis/src/lib/fsm.cc index 550674ad5..c65b13456 100644 --- a/gr-trellis/src/lib/fsm.cc +++ b/gr-trellis/src/lib/fsm.cc @@ -315,6 +315,48 @@ fsm::fsm(const fsm &FSM1, const fsm &FSM2) } + + +//###################################################################### +//# Generate a new FSM representing n stages through the original FSM +//# AKA radix-n FSM +//###################################################################### +fsm::fsm(const fsm &FSM, int n) +{ + d_I=(int) (pow(1.0*FSM.I(),1.0*n)+0.5); + d_S=FSM.S(); + d_O=(int) (pow(1.0*FSM.O(),1.0*n)+0.5); + + d_NS.resize(d_I*d_S); + d_OS.resize(d_I*d_S); + + for(int s=0;s<d_S;s++ ) { + for(int i=0;i<d_I;i++ ) { + std::vector<int> ii(n); + dec2base(i,FSM.I(),ii); + std::vector<int> oo(n); + int ns=s; + for(int k=0;k<n;k++) { + oo[k]=FSM.OS()[ns*FSM.I()+ii[k]]; + ns=FSM.NS()[ns*FSM.I()+ii[k]]; + } + d_NS[s*d_I+i]=ns; + d_OS[s*d_I+i]=base2dec(oo,FSM.O()); + } + } + + generate_PS_PI(); + generate_TM(); +} + + + + + + + + + //###################################################################### //# generate the PS and PI tables for later use //###################################################################### |