Research Article
The Capacity of Cognitive Ad-Hoc Networks with Carrier Sensing Errors
@INPROCEEDINGS{10.4108/icst.crowncom.2011.245917, author={Seungmo Kim and Tahjoon Park and Wan Choi and Youngnam Han}, title={The Capacity of Cognitive Ad-Hoc Networks with Carrier Sensing Errors}, proceedings={6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications}, publisher={IEEE}, proceedings_a={CROWNCOM}, year={2012}, month={5}, keywords={Ad-hoc sensing errors capacity}, doi={10.4108/icst.crowncom.2011.245917} }- Seungmo Kim
Tahjoon Park
Wan Choi
Youngnam Han
Year: 2012
The Capacity of Cognitive Ad-Hoc Networks with Carrier Sensing Errors
CROWNCOM
IEEE
DOI: 10.4108/icst.crowncom.2011.245917
Abstract
We analyze the capacity of cognitive ad-hoc networks under the effects of sensing errors: false alarm and missed detection. We present an ad-hoc network model overlaid on a primary system from which a cognitive node exploits spectrum holes for retransmissions. We derive per-link capacity, the indicator of the network’s capacity, by considering statistics of the primary users’ (PUs) channel occupancy and sensing errors. Our analysis shows that the capacity scaling law is kept unchanged, 𝑂(1/ √ log 𝑛) by the number of nodes 𝑛, even after sensing errors are introduced. It also shows how the capacity depends on the PUs’ channel occupancy and sensing errors.
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