In this research paper we have designed Interference Model for Scheduling Algorithm in Cognitive Radio Networks (CRNs), which is very much essential during the development of 4G. [1]. Also we shove radio resource management (RRM) in CDMA based cognitive radio networks (CRNs). Two types of CDMA based wireless networks are Cognitive radio networks (CRNs), and. Cooperative communication networks. ...

Cognitive radio networks hold the key to achieving better radio bandwidth utilization and improving the quality of wireless applications. In this paper we design a scenario for cognitive routing to improve wireless ad hoc network performance in terms of power consumption in transmit, receive and ideal modes, as well as reducing the collision of relaying on the network, without declining end-to-...

Cognitive radio has been introduced by Mitola in 1999 as an extension to software radio [1] (Stevens USA). Cognitive radio extends the software radio with radio-domain model-based reasoning about etiquettes (set of RF bands, air interfaces, protocols, and spatial and temporal patterns that moderate the use of the radio spectrum). Cognitive radio enhances the flexibility of personal services thr...

Cognitive radio (CR) has been an active research topic in wireless communications. In this dissertation, radio behavior and potential security threats in cognitive radio networks are investigated in order to successfully deploy CR networks and realize its benefits. We study complex CR misuse issues during its secondary access processes, including misbehavior, cheating, and attack. Different cou...

Spectrum sensing is an important functional unit of the cognitive radio networks. The spectrum sensing is one of the main challenges encountered by cognitive radio. This paper presents a survey of spectrum sensing techniques and they are studied from a cognitive radio perspective. The challenges that go with spectrum sensing are reviewed. Two sensing schemes, namely; cooperative sensing and eig...

Dynamic spectrum management is one of the key technologies in cognitive radio networks, and more and more researchers have been paying much attention to algorithms and models for Spectrum sharing. In this paper, we present a dynamic spectrum management application model based on potential game. Firstly, the mapping relationship is constructed for sections in cognitive radio network and game the...

The cognitive radio has been considered as a promising paradigm to achieve efficient spectrum usage by allowing the coexistence of the primary and cognitive radio networks. One fundamental challenge is to ensure the quality of service (QoS) of the primary link while maximizing the achievable transmission rate of the cognitive radio user. In this paper, we investigate the cooperation based spect...

the mounting demand of wireless systems has put a bunch of restrictions on the usage of existing radio spectrum which is limited and expensive resource. Cognitive radio networks (CRN) have emerged as a capable, yet exigent, solution to improve spectrum utilization; credit to the technology of cognitive radios Cognitive radio has been documented as a promising mode to get better spectrum efficie...