Cognitive radio (CR) is a promising technology for improving the utilization of wireless
spectrum resources. The key characteristic of CR system is that allowing unlicensed user to …

Cognitive radio is a form of wireless communication in which a transceiver can intelligently
detect with communication channels are in use and which are in not. It instantly moves into …

Cognitive Radio (CR) is a communication technology developed to solve the problem of
spectrum scarcity. One way to improve the throughput of CR is the use of efficient decision …

This paper illustrates the performance of bit error rate based selection combining (BER-SC)
protocol for adaptive cooperative cognitive radios. In the proposed framework, the …

To achieve cooperative diversity in cognitive radio network, Decode and Forward (DF)
protocol is implemented at Cognitive Radios (CRs) using Orthogonal Space Time Block …

Efficient spectrum utilization is a promising technique for a prolonged unused radio
frequency (RF) spectrum in a wireless network. In this paper, an adaptive spectrum sharing …

The practical application of Cognitive Radio (CR) is to address the problem of spectral
Radio Frequency (RF) under-utilization for wireless communications. One of the basic …

Cognitive radio is an emerging technology that has the capability of dealing with the
demanding requirement and scarcity of the radio spectrum. It is a revolutionary technology …

Cognitive radio (CR) is a form of wireless communication in which a transceiver can
intelligently detect which communication channels are in use. Upon the result of the …

Cognitive radio (CR) is a new paradigm in the area of wireless communication system for
effective utilization of radio frequency (RF) spectrum. Cognitive Radio (CR) is used to …