Mobility

The Capacity of Cognitive Ad-Hoc Networks With Carrier Sensing Errors

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Executive Summary

The authors analyze the capacity of cognitive ad-hoc networks under the effects of sensing errors: false alarm and missed detection. They present an ad-hoc network model overlaid on a primary system from which a cognitive node exploits spectrum holes for retransmissions. They derive per-link capacity, the indicator of the network's capacity, by considering statistics of the Primary Users' (PUs) channel occupancy and sensing errors. One of the most important discussions on wireless ad-hoc networks has been the consistent finding that the capacity of the networks is fundamentally constrained by the load of relaying burden at each node.

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