FreeCalypso > hg > tcs211-c139
diff chipsetsw/layer1/gtt_include/ctm/viterbi.h @ 0:509db1a7b7b8
initial import: leo2moko-r1
author | Space Falcon <falcon@ivan.Harhan.ORG> |
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date | Mon, 01 Jun 2015 03:24:05 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/chipsetsw/layer1/gtt_include/ctm/viterbi.h Mon Jun 01 03:24:05 2015 +0000 @@ -0,0 +1,88 @@ +/* +******************************************************************************* +* +* COPYRIGHT (C) 2000 BY ERICSSON EUROLAB DEUTSCHLAND GmbH +* +* The program(s) may be used and/or copied only with the +* written permission from Ericsson or in accordance +* with the terms and conditions stipulated in the agreement or +* contract under which the program(s) have been supplied. +* +******************************************************************************* +* +* File : viterbi.h +* Purpose : Header file for viterbi.c +* Author : Francisco Javier Gil Gomez +* +* Revision history +* +* $Log: $ +* +******************************************************************************* +*/ + +#ifndef viterbi_h +#define viterbi_h "$Id: $" + +#include <stdio.h> +#include <math.h> + +#include "conv_poly.h" /* definition of viterbi_t */ + + +/***********************************************************************/ +/* viterbi_init() */ +/* ************** */ +/* Initialization of the Viterbi decoder. */ +/* */ +/* output variables: */ +/* *viterbi_state initialized state variable of the decoder */ +/* */ +/***********************************************************************/ + +void viterbi_init(viterbi_t* viterbi_state); + + +/***********************************************************************/ +/* viterbi_reinit() */ +/* **************** */ +/* Re-Initialization of the Viterbi decoder. This function should be */ +/* used for re-setting a Viterbi decoder that has already been */ +/* initialized. In contrast to viterbi_init(), this reinit function */ +/* does not calculate the values of all members of viterbi_state that */ +/* do not change during the execution of the Viterbi algorithm. */ +/* */ +/* output variables: */ +/* *viterbi_state initialized state variable of the decoder */ +/* */ +/***********************************************************************/ + +void viterbi_reinit(viterbi_t* viterbi_state); + + +/***********************************************************************/ +/* viterbi_exec() */ +/* ************** */ +/* Execution of the Viterbi decoder */ +/* */ +/* input variables: */ +/* inputword Vector with gross bits */ +/* length_input Number of valid gross bits in vector inputword.*/ +/* length_input must be an integer multiple of */ +/* CHC_RATE */ +/* */ +/* output variables: */ +/* out Vector with the decoded net bits. The net bits */ +/* are either 0 or 1. */ +/* *num_valid_out_bits Number of valid bits in vector out */ +/* */ +/* input/output variables: */ +/* *viterbi_state State variable of the decoder */ +/* */ +/***********************************************************************/ + +void viterbi_exec(WORD16* inputword, WORD16 length_input, + WORD16* out, WORD16* num_valid_out_bits, + viterbi_t* viterbi_state); + +#endif