--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cs/layer1/gtt_include/ctm/conv_poly.h	Fri Oct 16 06:23:26 2020 +0000
@@ -0,0 +1,153 @@
+/*
+*******************************************************************************
+*
+*      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             : conv_poly.h
+*      Purpose          : Header file for conv_poly.c
+*      Author           : Francisco Javier Gil Gomez
+*
+*******************************************************************************
+*/
+
+#ifndef conv_poly_h
+#define conv_poly_h 
+
+#include "ctm_defines.h"   /* CHC_RATE, CHC_K */
+
+/* The constants CHC_RATE (rate of the channel codec) and */
+/* CHC_K (constraint length) are defined in ctm_defines   */
+
+#define NUM_NODES (1<<(CHC_K-1)) /* MUST BE 2^(CHC_K-1)            */
+#define BLOCK 5                  /* We perform the analysis of the */
+//                               /* paths along BLOCK*CHC_K steps  */
+
+
+/* POLYXYZ  =  Polynomial for generating an optimum short constraint   */
+/* length convolutional code with rate = 1/X and constraint length = Y */
+
+/* Polynoms for rate = 1/2 */
+
+#define POLY23A 0x7    
+#define POLY23B 0x5    
+
+#define POLY24A 0XF
+#define POLY24B 0XB
+
+#define POLY25A 0X17
+#define POLY25B 0X19
+
+#define POLY26A 0X2F   
+#define POLY26B 0X35
+
+#define POLY27A 0X4F
+#define POLY27B 0X6D
+
+#define POLY28A 0X9F
+#define POLY28B 0XE5
+
+#define POLY29A 0X1AF
+#define POLY29B 0X11D
+
+/* Polynoms for rate = 1/3 */
+
+#define POLY33A 0x7
+#define POLY33B 0x7
+#define POLY33C 0x5
+
+#define POLY34A 0xF
+#define POLY34B 0xB
+#define POLY34C 0xD
+
+#define POLY35A 0x1F
+#define POLY35B 0x1B
+#define POLY35C 0x15
+
+#define POLY36A 0x2F
+#define POLY36B 0x2B
+#define POLY36C 0x3D
+
+#define POLY37A 0x4F
+#define POLY37B 0x57
+#define POLY37C 0x6D
+
+#define POLY38A 0xEF
+#define POLY38B 0x9B
+#define POLY38C 0xA9
+
+/* Polynoms for rate = 1/4 */
+/* cf. Lin and Costello,
+   "Error Control Coding: Fundamentals and Applications" */
+
+#define POLY43A 0x5
+#define POLY43B 0x7
+#define POLY43C 0x7
+#define POLY43D 0x7
+
+#define POLY44A 0xB
+#define POLY44B 0xD
+#define POLY44C 0xD
+#define POLY44D 0xF
+
+#define POLY45A 0x15
+#define POLY45B 0x17
+#define POLY45C 0x1B
+#define POLY45D 0x1F
+
+#define POLY46A 0x2B
+#define POLY46B 0x37
+#define POLY46C 0x39
+#define POLY46D 0x3D
+
+#define POLY47A 0x5D
+#define POLY47B 0x5D
+#define POLY47C 0x67
+#define POLY47D 0x73
+
+#define POLY48A 0x9D
+#define POLY48B 0xBD
+#define POLY48C 0xCB
+#define POLY48D 0xEF
+
+#define POLY49A 0x133
+#define POLY49B 0x15D
+#define POLY49C 0x1DB
+#define POLY49D 0x1E5
+
+typedef struct
+{
+  WORD16 impulse_response[CHC_RATE*CHC_K];
+  WORD16 temp[CHC_RATE*CHC_K]; 
+} conv_encoder_t;
+
+typedef struct
+{
+  WORD32 metric;                /* Metric of the node after updating      */
+  WORD32 oldmetric;             /* Metric of the node before updating     */
+  WORD16 base_output;           /* Output of the node when the input is 0 */
+  WORD16 continue_path_from;    /* Last node from which the actual node
+                                   will continue the path                 */
+  WORD16 new_entry;             /* Value to be added to the path (0 or 1) */
+  WORD16 path[BLOCK*CHC_K];     /* Path ending in the node                */
+  WORD16 temppath[BLOCK*CHC_K]; /* Temp path used for the updating        */
+  
+} node_t;
+
+typedef struct
+{
+  node_t nodes[NUM_NODES];
+  WORD16 number_of_steps;
+} viterbi_t;
+
+void polynomials(WORD16 rate, WORD16 k,
+                 WORD16* polya, WORD16* polyb,
+                 WORD16* polyc, WORD16* polyd);
+
+#endif