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annotate src/cs/layer1/gtt_include/ctm/ctm_defines.h @ 6:6a05d91d1435

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components: first round of changes for the FFS editor
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 15 May 2020 02:39:15 +0000
parents 92470e5d0b9e
children
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1 /*
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2 *******************************************************************************
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3 *
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4 * COPYRIGHT (C) 2000 BY ERICSSON EUROLAB DEUTSCHLAND GmbH
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5 * 90411 NUERNBERG, GERMANY, Tel Int + 49 911 5217 100
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6 *
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7 * The program(s) may be used and/or copied only with the
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8 * written permission from Ericsson or in accordance
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9 * with the terms and conditions stipulated in the agreement or
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10 * contract under which the program(s) have been supplied.
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11 *
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12 *******************************************************************************
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13 *
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14 * File : ctm_defines.h
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15 * Purpose : Global constants for the Cellular Text Telephone Modem
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16 *
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17 *******************************************************************************
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18 */
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19 #ifndef ctm_defines_h
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20 #define ctm_defines_h "$Id: $"
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21
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22 #ifndef MAX
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23 #define MAX(A, B) ((A) > (B) ? (A) : (B))
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24 #endif
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25
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26 #define MAX_IDLE_SYMB 5 /* Number of Idle Symbols at End of Burst */
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27 #define CHC_RATE 4 /* Rate of the Error Protection */
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28 #define CHC_K 5 /* Constraint length of Error Protection */
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29 #define SYMB_LEN 40 /* Length of one CTM symbol */
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30
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31 /* The following constant determines whether the signal processing takes */
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32 /* place sample-by-sample or frame-by-frame (160 samples per frame) */
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33 // #define LENGTH_TONE_VEC 160 /* signal frame size */
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34 #define LENGTH_TONE_VEC 1 /* signal frame size */
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35
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36 /* Number of bits that are processed during each call of the main loop */
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37 //LN March 13, 2002
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38 //#define LENGTH_TX_BITS MAX(2, 2*LENGTH_TONE_VEC/SYMB_LEN)
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39 #define LENGTH_TX_BITS 2
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40 //LN
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41
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42 #define BITS_PER_SYMB 8 /* bits per symbol */
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43
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44 #define NCYCLES_0 2 /* Number of periods for symbol #0 */
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45 #define NCYCLES_1 3 /* Number of periods for symbol #1 */
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46 #define NCYCLES_2 4 /* Number of periods for symbol #2 */
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47 #define NCYCLES_3 5 /* Number of periods for symbol #3 */
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48
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49 #define THRESHOLD_RELIABILITY_FOR_SUPPRESSING_OUTPUT 100
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50 #define THRESHOLD_RELIABILITY_FOR_XCORR 1
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51 #define THRESHOLD_RELIABILITY_FOR_GOING_OFFLINE 100
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52 #define MAX_NUM_UNRELIABLE_GROSS_BITS 400
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53
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54 #define NUM_BITS_GUARD_INTERVAL 6 /* length of silence after a burst */
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55
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56 #define WAIT_SYNC_REL_THRESHOLD_0 20316 /* = 0.62*32768 */
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57 #define WAIT_SYNC_REL_THRESHOLD_1 17039 /* = 0.52*32768 */
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58 #define WAIT_SYNC_REL_THRESHOLD_2 23265 /* = 0.71*32768 */
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59 #define RESYNC_REL_THRESHOLD 26542 /* = 0.81*32768 */
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60
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61 #define GUARD_BIT_SYMBOL 0 /* "magic number" indicating that a */
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62 // /* bit shall be muted */
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63
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64 #define intlvB 8 /* Interleaver block length */
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65 #define intlvD 2 /* Interleaver block distance (interlace) */
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66
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67 #define demodSyncLns 1 /* Nr of demodulator sync lines */
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68 #define deintSyncLns 0 /* Nr of deinterleaver sync lines */
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69
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70 #define IDLE_SYMB 0x16 /* UCS code for Idle Symbol */
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71 #define ENQU_SYMB 0x05 /* UCS code for Enquiry Symbol */
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72
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73 #if LENGTH_TONE_VEC==160
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74 #define ENQUIRY_TIMEOUT 20 /* number of frames for negotiation */
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75 #else
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76 #define ENQUIRY_TIMEOUT (1320/5) //19*160
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77 #endif
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78
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79 #define NUM_ENQUIRY_BURSTS 3 /* number of enquiry attempts */
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80
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81 #define NUM_MUTE_ROWS 4 /* duration of muting interval, 4 rows=80ms */
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82 #define RESYNC_SEQ_LENGTH 32 /* must be a multiple of intlvB */
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83
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84 #define NUM_BITS_BETWEEN_RESYNC 352 // 352 = 320+32
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85 /* 352 is a multiple of CHC_RATE, intlvB, and BITS_PER_SYMB, */
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86 /* and must be greater than intlvB*((intlvB-1)*intlvD+NUM_MUTE_ROWS */
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87
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88 #define SILENCE_PERIOD 32
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89 #define EARLY_SILENCE_PERIOD SILENCE_PERIOD-2
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90 #define LATE_SILENCE_PERIOD SILENCE_PERIOD+2
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91 #define PLAYBACK_VOLUME 0xC000 /* volume for sound card playback */
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92
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93 //#define DEBUG_OUTPUT /* comment this out for regular operation mode! */
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94
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95 #endif