Digital Battlefield Communications Hawaii Center for Advanced Communications

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Digital Battlefield CommunicationsHawaii Center
for Advanced Communications

• Anthony Kuh
• Chairman, Electrical Engineering
• College of Engineering
• University of Hawaii at Manoa

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Mission Statement
The University of Hawaii Center for Advanced
Communications is a multidisciplinary research
center bringing together researchers from diverse
areas to work together on advanced communication
systems (wireless).

• Joint collaborative basic and applied research
• Members of the Center
• External researchers from government, industry
  and academia
• Provide students with a rich and diversified
  education to prepare them for careers in the
  telecommunications industry and academia
• Encourage industrial interactions, promotion of
  entrepreneurial activities, and providing
  technical leadership and expertise to the
  University and State of Hawaii

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Organization
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Personnel(12 faculty,40 grad. students, UG
students)

• Telecommunications (established tradition)
• Networks (ALOHA wireless packet radio networks)
• Communications and coding (Protocols for NASA
  and GSM wireless standard)
• Signal Processing
• Solid State electronics and devices (outstanding
  young talent)
• Microwave/Millimeter-wave research lab (MMRL)
• Physical Electronics lab (PEL)
• Integrated Circuits and VLSI Design lab

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Activities

• Current Research Funding
• Group funding NSF Wireless Information
  Technology and Networks (Millimeter-Wave Systems
  for Wireless Communications).
• Government NSF, NASA, DARPA (9 grants, 3
  million).
• Industry Hitachi, LSI Logic, TRW (10 grants,
  700,000)
• Education
• Multidisciplinary graduate education
• Undergraduate education and research
  opportunities

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Digital Battlefield CommunicationsDeveloping
novel communication networks for future combat
systems

• Rapid deployment
• Dynamic network topologies
• Seamless interoperability
• Dynamic bandwidth allocations
• Broadband video applications
• Security
• Mobility
• Power consumption

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Project Description

• Novel Hardware
• Millimeter-wave components, MEMS devices,
  quasi-optical components
• Secure Communications Systems
• Channel modeling, retrodirective and
  reconfigurable arrays, space-time codes
• Mobile Wireless Networks
• Ad-hoc network architectures, equalization and
  receiver design, multimedia compression
  algorithms

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Impact

• Vertical integration (physical to networking
  layer expertise) to design future combat
  communication systems
• Education of students in multidisciplinary
  communication area
• Technology transfer, commercialization to help
  develop high tech in Hawaii
• Visitor exchange program (government, industry,
  and other academic institutions)

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Quasi-Optical Power Combining of Microwave and
Millimeter-Wave Solid-State Devices J. Mink, 1986

• High Power-Handling CapabilityPower shared among
  many devices.
• High Combining EfficiencyFree-space combining
  minimizes conductor losses.
• Low NoiseNoise from individual elements is
  uncorrelated.
• Fault TolerantInsensitive to single-point
  failures.
• InexpensivePlanar structure allows monolithic
  integration.

Output Beam
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Retrodirective Self-Oscillating Mixer Array

• Omnidirectional
• Suitable for radar transponders and self-locating
  communication networks
• Generates jamming signal

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Secure Communications in an Ad Hoc Network
Secure Retrodirective Link
Omnidirectional Jamming Signal
Interceptor
Interceptor
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