New HFMF Digital Maritime Mobile Systems

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• New HF/MF Digital Maritime Mobile Systems

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Globe Wireless

• Global provider of Maritime Communications
  Solutions
• Managing customer email 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

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Service Overview
CUSTOMER OFFICE
Satellite Delivery

• 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

• Email
• Fax
• Telex
• Cable
• Telephone

• Least Cost Routing
• Email connectivity
• Data Connectivity
• GlobeCrewTM Kiosk

I N T E R N E T
GlobeSecureSM Optional Virtual Private Network
with Globe Wireless
Application Data
Satellite
HF Radio
Email
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
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Connected Worldwide
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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

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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

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Below Deck Equipment

• Personal computer
• Marine HF radio
• Globe Wireless modem
• Power supply

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Above Deck Equipment

• Vertical antenna
• Antenna coupler
• GPS receiver

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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
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OFDM Spectrum
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OFDM Parameters

• Carrier
• 300 HF frequency pairs in the marine bands
• 32 tones
• QPSK modulation
• 62.5 Hz carrier spacing
• 2 ms guard interval
• 700-2700 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

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Vessel Performance Example
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Adaptive HF Features

• Dynamic data rate adjustment
• Automatic link establishment
• Adaptive frame mapping
• Individual tone retransmission
• Least cost routing
• Frequency agility

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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

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Protocol Improvements

• 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

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Summary

• The Globe Wireless Maritime Data Network is
  operational world wide
• Being used by 4000 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