Enhancing Energy in WBAN through Cognitive Radio Networks

Enhancing Attack Resilience in Cognitive Radio Networks

Enhancing Reliability of Radio Links in Cognitive Radio Networks

The radio spectrum being an important resource should be used with optimum performance. In Cognitive radio Networks it can be improved by pooling and dynamic allotment of resources. The Radio links performance deteriorates in the wireless channel due to numerous known and unknown disturbances. This problem had been tackled using channel coding techniques of various kind. Proper Channel coding t...

Enhancing Metaphoric Competence through the Cognitive Approach

Studies in cognitive linguistics have highlighted the importance of metaphors for language teaching. Metaphoric competence, as an important aspect of intelligence, can contribute to the learning of languages. Most textbooks in ESL/EFL avoid the issue of figurative language and concentrate only on the denotative aspects of language. This article reports a study conducted at the Islamic Azad Univ...

Security in Cognitive Radio Networks Security in Cognitive Radio Networks

While bringing the potential for solving the spectrum underutilization problem using methods such as dynamic and opportunistic spectrum access, Cognitive Radios (CRs) also bring a set of security issues and potential breaches that have to be addressed. These issues come out mainly from the two important capabilities implemented within CRs: their cognition ability and reconfigurability. This cha...

Energy-efficient broadcast in multihop cognitive radio networks

Broadcast is an important operation in Cognitive Radio Networks (CRNs). How to achieve broadcast in an energy-efficient way is important since users in CRNs are usually battery-powered. Existing single-channel broadcast mechanisms are not suitable for CRNs because multiple channels can be used in a CRN. Most existing multi-channel broadcast schemes rely on a common control channel (CCC) to supp...