Cognitive radio (CR) arises as an important technique for wireless network with the aim to
provide better utilization of radio spectrum, which is being utilized sporadically in some …

Spectrum sharing between license holders (primary users) and unlicensed secondary users
has been proposed as a solution to frequency wastage. Anyhow, the coexistence among …

Cognitive radio technology has been widely researched to improve the spectrum usage
efficiency. Modeling of the spectrum occupancy in a cognitive framework including licensed …

Cognitive radio is considered to be an emerging technology that provides a platform to
share the spectrum between primary and secondary users. As a result, the quality of service …

Cognitive radio concept has been widely researched to improve the spectrum usage
efficiency. Appropriate modelling of the spectrum occupancy by both licensed and …

Cognitive radio wireless networks CRNs have been considered as an efficient
communication paradigm to the utilization of scarce spectrum. The main purpose of channel …

Abstract Cognitive Radio Networks have been emerged as a promising solution for solving
the problem of spectrum scarcity and improving spectrum utilization by opportunistic use of …

The increasing demand of wireless applications has put a lot of limitations on the use of
available radio spectrum is limited and precious resource. Many survey of spectrum …

One of the major challenges in Cognitive Radio Network (CRN) is the limitations in
protecting the activities of the licensed devices from any form of interference while making …

The growing demand of wireless applications has put a lot of constraints on the usage of
available radio spectrum which is limited and precious resource. If scanning of a radio …