Fairness means to maintain the property of equity or equivalence. It is the distribution,
sharing, allocation, and supply of different working metrics fairly such as bandwidth …

In this paper, we investigate the fairness between two secondary user (SU) groups in an
opportunistic spectrum access networks (OSA). First, for a given number of allocated …

Distributing scarce spectral resources among the unlicensed users has been an attractive
research area for Cognitive Radio Network's (CRN) research community. A resource …

Years of growth in wireless communication services and conservative spectrum allocation
policies by government regulators have led to spectrum scarcity. On the other hand …

Cognitive radio (Mitola III, 2000) also known as opportunistic spectrum access (OSA) has
emerged as a promising solution to increase the spectrum efficiency Haykin (2005). In OSA …

In this paper, we study the throughput enhancement achieved by cooperative
communication technique in cognitive radio networks for different global objectives and …

With widespread use of wireless services the wireless networking design paradigm is
currently being transformed into the one global infrastructure vision, called Beyond 3rd …

Static spectrum access policy has resulted in spectrum scarcity as well as low spectrum
utility in today's wireless communications. To utilize the limited spectrum more efficiently …

In this paper, we build the model of the Cognitive Radio system by continuous time Markov
chain and analyze the model by Markov theory. Aimed at the character that the access of …