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Cognitive Wireless Networking in the TV Bands - page 53 / 56

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Modeling Challenges:

In single/multi-channel systems, some graph coloring problem.

With contiguous channels of variable channel-width,  coloring  is not an appropriate model!

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Cognitive Radio Networks - Challenges

Practical Challenges:

Heterogeneity in spectrum availability

Fragmentation

Protocol should be…

- distributed, efficient

- load-aware

- fair

- allow opportunistic use

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Theoretical Challenges:

New problem space

Tools…? Efficient algorithms…?

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