diff options
Diffstat (limited to 'macros/istrellis.sci')
| -rw-r--r-- | macros/istrellis.sci | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/macros/istrellis.sci b/macros/istrellis.sci index da8be0c..86e6583 100644 --- a/macros/istrellis.sci +++ b/macros/istrellis.sci @@ -1,30 +1,29 @@ function [isOk, status] = istrellis(S) - // This function checks if the given input is of trellis structure - +// // Calling Sequence // [ISOK, STATUS] = ISTRELLIS(S) // // Description // [ISOK, STATUS] = ISTRELLIS(S) returns [T,''] if the given input is valid trellis structure. Otherwise ISOK is F and STATUS // indicates the reason for invalidity - +// // Fields in trellis structure are // numInputSymbols, (number of input symbols) // numOutputSymbols, (number of output symbols) // numStates, (number of states) // nextStates, (next state matrix) // outputs, (output matrix) - +// // Properties of the fields are as follows // numInputSymbols and numOutputSymbols should be a power of 2 (as data is represented in bits). // The 'nextStates' and 'outputs' fields are matrices of size 'numStates' x 'numInputSymbols' . // Each element in the 'nextStates' matrix and 'output' matrix is an integer value between zero and (numStates-1). // The (r,c) element of the 'nextStates' matrix and 'output' matrix,denotes the next state and output respectively when // the starting state is (r-1) and the input bits have decimal representation (c-1). - +// // To convert to decimal value, use the first input bit as the most significant bit (MSB). - +// // Examples // Valid trellis structure // trellis.numInputSymbols = 4; @@ -33,7 +32,7 @@ function [isOk, status] = istrellis(S) // trellis.nextStates = [0 1 2 1;0 1 2 1; 0 1 2 1]; // trellis.outputs = [0 0 1 1;1 1 2 1; 1 0 1 1]; // [isok,status] = istrellis(trellis) - +// // Inavlid trellis structure // trellis.numInputSymbols = 3; // trellis.numOutputSymbols = 3; @@ -41,12 +40,9 @@ function [isOk, status] = istrellis(S) // trellis.nextStates = [0 1 2 ;0 1 2 ; 0 1 2 ]; // trellis.outputs = [0 0 1 ;1 1 2 ; 1 0 1 ]; // [isok,status] = istrellis(trellis) - -// See also -// iscatastrophic - +// // Authors -// Pola Lakshmi Priyanka, IIT Bombay// +// Pola Lakshmi Priyanka, IIT Bombay //*************************************************************************************************************************************// |