CONTENTS

Policy on Intellectual Property Right (IPR)
1 Introduction
2 System interoperability
1 The PACTOR‑III protocol (Technical Description by Hans-Peter Helfert and Thomas Rink, SCS GmbH & Co. KG, Hanau, Germany)
1.1 Introduction
1.2 Speed levels (SLs) and bandwidth
1.3 Modulation, coding, and data rates
1.4 Crest factor (CF) and transmitter output power
1.5 Cycle duration
1.6 Structure of packets and control signals
1.7 Online data compression
1.8 Signal characteristics and practical considerations
1.9 Performance measurements
2 Typical communication protocol (T‑BUS)
3 Global Link Network (GLN)
Technical structure
NCC
CRS
Ship earth station (SES)
Internet
Interfacing
Data security
E‑mail service
Weather information service
Vessel tracking
Crew mail
Ship security alert system (SSAS)
1 Introduction
2 System requirements
3 System overview
3.1 General information
3.2 HF radio link
3.2.1 Coast station
3.3 Working modes
3.3.3 Ship tracking
3.4 Frequency reuse
3.5 IPBC system and GMDSS
3.6 Other IPBC applications
4 System architecture
4.1 General principle
4.2 OSI model
4.3 Physical layer (L1)
4.3.1 Physical support
4.3.2 Physical presentation
4.3.3 Media access control (MAC)
4.4 Link layer (L2)
4.4.1 Error correction
4.4.2 Filtering
4.4.3 Encrypting
4.4.4 Radio link management
4.5 Transport layer (L4)
4.5.1 Application layer (L7)
5 Layer L1 principle OFDM
5.1 Introduction
5.2 Principle
5.3 Modulation
5.4 Synchronization
5.5 Spectral occupation of HF signal
6 Link layer principle (L2)
6.1 Error correction
6.2 Radio link management on the shore station side
6.3 Radio link management chronogram
7 Basis for experimentation
8 First test results
8.1 Propagation measure campaign, sea travel of ground wave
8.2 Channel modelling
9 Experimentation results
9.1 Results and interpretations
9.2 Influence of land on a mixed path land/sea
9.3 Data transmission
9.3.1 Coastal
9.3.2 Ship
9.4 Reception
9.4.1 Coastal
9.4.2 SHIP
9.5 Conclusions