1. New HF/MF Digital Maritime Mobile Systems

2. Globe Wireless Global provider of Maritime Communications Solutions
Managing customer & data services for 15 years
Installed on more than 4000 ships
Basis of meeting regulatory driven applications
GlobeAlert ship security alert system
GlobeLocator long range identification and tracking of ships
GlobeWeather forecasts
Other fleet management functions

3. Service Overview CUSTOMER OFFICE CUSTOMER VESSEL I N T E R
Satellite Delivery
CUSTOMER OFFICE
Efficient large file transfer
Marinet communications protocols
Sustained high speed transfer
Full duplex communications
Store and forward delivery
Use existing office equipment and systems to exchange messages and data with vessels at sea
Fax
Telex
Cable
Telephone
Least Cost Routing
connectivity
Data Connectivity
GlobeCrewTM Kiosk I N T E R
GlobeSecureSM
Optional Virtual Private Network with Globe Wireless
Application
Data
Satellite
HF Radio
Crew
Maritime Data
Network
Network Operations Center
Cost Effective Messaging
Near Real-Time Delivery
Timely delivery confirmation
Notification of satellite traffic waiting on shore
The Secure Message Handling System automatically routes all incoming and outgoing messages to destinations
CUSTOMER VESSEL

4. Connected Worldwide

5. The Maritime Data Network
“Always on” connection
25 HF stations world wide
Approximately 300 channel pairs
Half receive and half transmit
Delivers 50,000 messages per day
Alternative to satellite systems
Traffic doubles every 18 months
Message growth and new applications
Flexible for efficiency improvement

6. Globe Wireless Reliability
Guaranteed message delivery
Multiple frequencies and stations
Network operating centers in California and England
All stations have backup power
99.97% service availability over the last four years
Ships use both HF and satellite communications
Shipboard equipment is self diagnosing
24/7 customer support

7. Below Deck Equipment Personal computer Marine HF radio
Globe Wireless modem
Power supply

8. Above Deck Equipment
Vertical antenna
Antenna coupler
GPS receiver

9. Globe Wireless Modem Small form factor
Uses digital signal processing technology
Call set up protocol is a simple extension to NBDP
Bandwidth efficiency of about two BPS per Hertz
OFDM modulation rather than single carrier
Resistant to multipath fading
NBDP
Globe Wireless
lll
500 Hz, 1 Tone
3000 Hz, 32 Tones

10. OFDM Spectrum

11. OFDM Parameters Carrier Timing Data efficiency
300 HF frequency pairs in the marine bands
32 tones
QPSK modulation
62.5 Hz carrier spacing
2 ms guard interval
Hz occupied bandwidth
Timing
1.520 seconds per burst cycle
1.095 second burst duration (tone + sync + data)
0.425 second response (ACK/NACK + round trip delay + processing time)
Data efficiency
2 bits/second/Hz

12. Vessel Performance Example

13. Adaptive HF Features Dynamic data rate adjustment
Automatic link establishment
Adaptive frame mapping
Individual tone retransmission
Least cost routing
Frequency agility

14. Planned New Features Next generation protocol
Capacity improvement
Adds broadcast/multicast capability
Message delivery in as little as 2 seconds
Similar to current protocol
Same OFDM modulation and spectral efficiency
Improved timing and protocols

15. Protocol Improvements
Current Protocol
Ack
Data
New Protocol
New protocol is twice as efficient as current protocol
New protocol eliminates call set up time
No hardware changes on ship
Twice as many vessels plus broadcasts, paging, network messages on the same number of channels

16. Summary
The Globe Wireless Maritime Data Network is operational world wide
Being used by vessels
Offers greater flexibility than satellite only systems
Ongoing improvements for more capacity and new services
Increased spectral efficiency and more HF channels are both needed for continued growth in maritime use