@book{kaiser_fuzzy_2009-1,
	title = {Fuzzy {Logic} {Based} {Opportunistic} {Spectrum} {Access} and {Spectrum} {Handoff} for {OFDM} based {Cognitive} {Radio} {Networks}},
	abstract = {In this paper, we investigate the opportunistic spectrum 
access and spectrum handoff in a cognitive radio network
(CRN). The cognitive radios (CRs) or secondary users (SUs)
enable opportunistic spectrum access to sense the unused
spectrum. They adapt their operating characteristics to the
real time environment in order to maximize the quality of
service (QoS). A SU has to initiate a spectrum handoff when
it causes interference to primary user (PU) or when the QoS is
not satisfactory. We propose fuzzy logic based approach to
select radio spectrum opportunistically with the proportional
fairness scheduling. Through this approach spectrum hand off
(HO) decision is also made using power control technique.
The proposed spectrum access and HO algorithms are
compared with the fixed threshold and existing fuzzy
controlled HO algorithms. It is observed that the percentage
of handoff of the SUs is reduced in our case and the data rate
of the system is also increased considerably.},
	author = {Kaiser, M. Shamim},
	month = jan,
	year = {2009},
}

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