Wavecom W61PC V7.5.0 User Manual

Page 5

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WAVECOM Decoder W61PC/LAN Manual V7.5

Contents

v

MFSK Analysis ............................................................................................ 84

MFSK Code Check HF .................................................................................. 85

Autocorrelation ........................................................................................... 86

BIT CORRELATION ...................................................................................... 88

BIT LENGTH ANALYSIS ................................................................................ 90

SELCAL ANALYSIS ...................................................................................... 92

Fundamentals of Radio Data Transmission

94

Telegraph Speed, Bit Rate, Baud Rate, Symbol Rate ....................................... 95

Formatting and Source Coding ..................................................................... 96

Encryption ................................................................................................. 98

Channel Coding .......................................................................................... 99

Equalization ............................................................................................. 100

Synchronization ........................................................................................ 100

Multiplexing and Multiple Access ................................................................. 101

Modulation ............................................................................................... 101

ASK (Amplitude Shift Keying) .......................................................... 102

FSK (Frequency Shift Keying) .......................................................... 102

PSK (Phase Shift Keying) ................................................................ 102

M-ary-FSK (MFSK), M-ary-PSK (MPSK) ............................................. 102

OFDM (Orthogonal Frequency Division Modulation) ............................ 102

Bandwidth-efficient Modulation ........................................................ 103

INDIRECT FM ................................................................................ 103

INDIRECT AM ................................................................................ 103

FAX ......................................................................................................... 103

FAX Transmission Sequence ............................................................ 103

Transmission Modes

104

ACARS .................................................................................................... 104

AIS ......................................................................................................... 106

ALE-400 .................................................................................................. 107

ALF-RDS .................................................................................................. 108

ALIS ....................................................................................................... 108

ALIS-2 .................................................................................................... 109

AMSAT-P3D ............................................................................................. 110

APCO-25 ................................................................................................. 110

ARQ6-90 and ARQ6-98 .............................................................................. 111

ARQ-E ..................................................................................................... 111

ARQ-E3 ................................................................................................... 112

ARQ-M2-342 and ARQ-M2-242 ................................................................... 112

ARQ-M4-342 and ARQ-M4-242 ................................................................... 113

ARQ-N ..................................................................................................... 114

ASCII ...................................................................................................... 114

ATIS ....................................................................................................... 115

AUM-13 ................................................................................................... 116

AUTOSPEC ............................................................................................... 116

BAUDOT .................................................................................................. 117

BIIS ........................................................................................................ 118

BR-6028 .................................................................................................. 121

BULG-ASCII ............................................................................................. 122

CCIR ....................................................................................................... 123

CCITT ..................................................................................................... 124

CHU ........................................................................................................ 125

CIS-11 .................................................................................................... 125

CIS-12 .................................................................................................... 126

CIS-14 .................................................................................................... 126

CIS-36 .................................................................................................... 127

CIS-36-50 ............................................................................................... 128

CIS-50-50 ............................................................................................... 128

CLOVER-2 ................................................................................................ 128

CLOVER-2000 .......................................................................................... 129

CODAN-SELCAL ........................................................................................ 130

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