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Cognitive Wireless Networking in the TV Bands - page 28 / 56

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Performance Analysis

Markov-based performance model for CMAC/B-SMART

Captures randomized back-off on control channel

B-SMART spectrum allocation

We derive saturation throughput for various parameters

Does the control channel become a bottleneck…?

If so, at what number of users…?

Impact of Tmaxand other protocol parameters

Analytical results closely match simulated results

Provides strong validation for our choice of  Tmax

Even for large number of flows, control channel can be prevented from becoming a bottleneck

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