This document presents the optimization of quality of service for
unlicensed subscribers anticipating the QoS of the primary users as well. The
concept of cognitive radio came into existence for the exclusive use of the unused
spectrum space by the licensed users. The unlicensed user or the secondary users
use the unoccupied spectrum spaces of licensed user's spectrum for the effective
usage of the spectrum. The use of live streaming, Voice over Internet
protocol(VoIP) and multi media applications which are delay sensitive
applications throughout the session. The constraints like delay and throughput
and the quality of service are affected due to these applications. To overcome
these constraints the tradeoff between these parameters must be employed. In this
paper, an extension to the non-work conservation policy is implemented in
Cognitive radio network(CRN) by using the optimization algorithm known as
Enhanced stimulated annealing(ESA) algorithm to bring forth the tradeoff
between delay and throughput.
Keywords: Cognitive Radio, Delay, Enhanced stimulated annealing Algorithm,
Optimization, Throughput, Trade-off.
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