Spectral Efficient COMmunications for future Aeronautical Services

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Spectral Efficient COMmunications for future
Aeronautical Services

• Jan Erik Håkegård
• jan.e.hakegard_at_sintef.no

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Outline

• Background ATM/aeronautical communications
• Why did we propose a project on ATM/aeronautical
  communications?
• The SECOMAS project
• Partners
• Objectives
• Activities

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Why are new ATM systems necessary?

• Traffic in 2005
• 9.2 million flights per year
• Peak day
• 30 000 flights by commercial airlines
• 200 000 flights by general aviation aircraft
• Numerous military aircraft
• Estimated traffic in 2025
• 22 million flights per year
• Peak day
• 72 000 flights by commercial airlines
• 480 000 flights by general aviation aircraft
• Numerous military aircraft

Source Expectations of SESAR, Bernard Miaillier,
D1 Forum
Increase by factor 2.4 Todays Air Traffic
Management (ATM) systems are not capable to
support this increase
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What is the impact on the communication systems?

• Bandwidth congestion
• Primarily in the VHF band
• High density airspace (e.g. Continental Europe)
• Solutions
• Increase spectrum efficiency in the VHF band
  (8.33 kHz channels)
• Migrate from voice communication to data
  communication (VDL 2/3/4)
• Open new frequency bands for aeronautical
  communication (WRC-07)
• VHF band 108-118 MHz (no system proposed)
• L-band Portions within the 960-1164 MHz
  (L-DACS1/2/(3))
• C-band Portions within the 5000-5150 MHz
  (IEEE802.16aero)
• Develop a satellite component for ATM
• ARTES-10

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L-band Digital Aeronautical Communication System
(L-DACS)

• Future Communication Study (Eurocontrol/FAA)
• Two alternative solutions LDACS-1 and LDACS-2
• Conclusions presented to ICAO in October 2007
• Decision on one system to be taken in 2009
• Deployment in 2020

Options Access Scheme Modulation Type Origins
L-DACS 1 FDD OFDM B-AMC, P34
L-DACS 2 TDD CPFSK/GMSK LDL, AMACS
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C-bandAirport communications

• Develop an aeronautical Mobile WiMAX standard
  (IEEE802.16aero)
• Identify the portions of the IEEE 802.16e
  standard best suited
• Identify and develop missing required
  functionalities
• Evaluate and validate the performance through
  trials and test bed development
• Propose an aviation specific standard

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Satellite component

• Two ARTES-10 (ESA) studies (K.O. Dec 2007)
• Communication System Design
• Analysis and Definition of Satellite System
• Objectives
• Preparation work to support the SESAR Master Plan
• Must be coherent in time and content with the
  SESAR program

• Support frequency allocations
• Consider non-technical issues from the start
• Define ancillary payload

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Issues regarding satellite coverage in northern
regions
The High North will be Norways most important
strategic priority area in the years ahead.
-Norwegian Ministry of
Foreign Affairs

• Large
• 6 x land area
• Mainly inhabited
• A few islands
• Economically important
• Oil and gas
• Fish
• Shipping
• Strategically important
• Satellite coverage important

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Coverage GEO satellites
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Highly elliptical orbits (HEO)Molniya and Tundra
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SECOMAS project

• Knowledge-building project
• 2007-2010
• Working partners
• SINTEF
• NTNU (The University in Trondheim)
• Financial partners
• Norwegian Research Council
• Avinor (The Norwegian ANSP)
• Jotron
• Kongsberg Defence Communications
• Park Air Systems
• Thales Norway

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SECOMAS objective

• Explore spectrum efficient wireless
  communications
• Meeting req. of future aeronautical comm.
  services at large
• Including
• Links Air-ground, air-air, satellite
• Services ATS, AOC/AAC, APS

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SECOMAS activities

• Industrial path (SINTEF)
• Airport (IEEE802.16e)
• Analytical approach
• Simulations
• (Validation through measurements)
• Satellite component
• ARTES-10
• Northern area coverage
• Heterogeneous networks
• Distribute traffic among various network options,
  respecting the services QoS requirements

• Theoretical path (NTNU)
• MIMO, ST-coding
• Link adaptation
• Cooperative and opportunistic transmission
• Advanced channel coding
• Multi-carrier transmission (e.g. OFDM)
• Networking concepts
• Cross-layer design

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SECOMAS impact

• Play a role in the development of future
  aeronautical communications
• Get involved in international activities (SESAR,
  EC FP7, ARTES-10)
• Academic results
• Ph.D. student, scientific publications
• Lead to development projects in cooperation with
  industry

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Thank you for your attention !