An Analysis of Competition among Autonomous Devices in Multichannel Cognitive Radio Networks
Citation:
Z. Khan, J. Lehtomaki, L. A. DaSilva, and M. Juntti, An Analysis of Competition among Autonomous Devices in Multichannel Cognitive Radio Networks, 7th Intl. Conf. on Cognitive Radio Oriented Wireless Networks (CROWNCOM), Stockholm, Sweden, 18-20 June 2012, 2012, 1 - 6Download Item:
06481098.pdf (Published (author's copy) - Peer Reviewed) 90.86Kb
Abstract:
We investigate an autonomous opportunistic spec-
trum access (OSA) strategy for a multichannel cognitive radio
(CR) network, where two or more autonomous CRs sense the
channels sequentially in some sensing order to find a free channel
to transmit on, if one exists. We evaluate the performance of
the OSA strategy in terms of probability of success (probability
that a given CR finds a channel free), mean time of success
and throughput achievable by a CR. Surprisingly, we find that,
when the number of potentially available channels is not large as
compared to the number of CRs in the network, then having more
free channels beyond a certain number actually hurts the CRs.
This counter-intuitive result stems from an increased number
of collisions among the autonomous CRs. To validate the closed
form expressions that are derived in this paper, we compare our
results to those obtained via simulations.
Sponsor
Grant Number
National Science Foundation (NSF)
CNS-1147790
Science Foundation Ireland (SFI)
10/CE/I1853
Author's Homepage:
http://people.tcd.ie/dasilvalDescription:
PUBLISHEDStockholm, Sweden
Author: DA SILVA, LUIZ
Other Titles:
7th Intl. Conf. on Cognitive Radio Oriented Wireless Networks (CROWNCOM)Type of material:
Conference PaperAvailability:
Full text availableKeywords:
Wireless NetworksSubject (TCD):
TelecommunicationsLicences: