This document outlines three demos that demonstrate techniques for improving spectrum efficiency. The first demo senses spectrum occupancy to detect existing networks. The second demo avoids interference by detecting bad channel conditions and avoiding occupied channels. The third demo aims to minimize interference by enabling collaboration between networks to optimize routes and channel usage. Taken together, the demos showcase initial techniques that can be refined and combined to further increase efficient use of available spectrum.

1. ISBO NG WiNeTs
Demo Storyline
Peter De Cleyn
IBBT-PATS, University of Antwerp

2. Demo introduction
 Three separate but complementary demos
 One theme: spectrum efficiency
 Stacked approach
 Integration path
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3. DEMO 1: Sensing Interference
 First step is to measure the spectrum
occupancy
 500 Mhz – 2.5Ghz
 Large range
 Lots of networks to detect
 Low Power
 Needed to develop network detection
algorithms
 Verification of algorithms
 Coupling with sensing engine
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4. Demo 2: Avoiding interference
 Avoiding interference
 Detect bad channel conditions
 Avoid using “occupied” channels
 Single sided, non-cooperative
 Both parties can use their needed share of the bandwidth
 Demo
 Sensor and WiFi networks competing for spectrum
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5. Minimizing interference
 We shouldn't waste resources
 Collaborating networks can decrease
the usage of spectrum
 Communication between
 homogeneous technologies
 Optimize routes to minimize hop counts
 Minimize channel usage
 Heterogeneous networks
 Relay traffic to other networks
 Minimize channel usage
 Optimize the available resources
over the boundaries of networks
and devices
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6. Conclusions
 First steps are taken
 We will demonstrate techniques which (will) all
contribute to a higher spectral efficiency
 Road looks promising
 Refining, extending and, most of all, combining all
techniques will further increase spectrum efficiency.
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