Policy on Intellectual Property Right (IPR)
�1���� Background information
�2���� Identification of the usable band
�3���� Overview of the system
�4���� Specifications for the 500 kHz coastal
transmitters
�5���� Local transmitters
�6���� Network
�7���� Type of messages
�8���� Type of information broadcasts
�9���� Encryption
10���� Description of a coastal transmitting
station
11���� Equipment for ship
12���� Protection for broadcasting of NAVTEX on
490 kHz and 518 kHz
������ 12.1���� Transmitter emissions mask
13���� Selection of 64-QAM modulation parameters
������ 13.1���� Differential coding and mapping
������ 13.2���� Filter roll-off factor
������ 13.3���� Bit error rate versus
signal-to-noise ratio for 64-QAM
14���� Candidate 500 kHz digital broadcast
antennas
������ 14.1���� Practical vertical-tower
antennas
������ 14.2���� Potentially available antenna
assets from retiring legacy systems
15���� Determination of the coverage range for
the broadcast data service
������ 15.1���� Radio-frequency propagation and noise
������ 15.2���� Determination of the range
achieved using NAVTEX operation
������ 15.3���� Prediction of A2 and NAVTEX
ranges (IMO performance criteria)
������ 15.4���� C/N required for
NAVTEX broadcasts
������ 15.5���� Prediction of 64-QAM broadcast
transmission range
������ 15.6���� Ship receiver performance
specifications
Ship receiver specifications:
16���� Field tests
������ 16.1���� Generalities
������ 16.2���� Transmitting shore station
������ 16.3���� Broadcast emissions
������ 16.4���� Reception by the test ship
station
������ 16.5���� Results
17���� Conclusions