Cognitive radio networks are expected to mitigate the spectrum scarcity problem by dynamically accessing any available spectrum in licensed and unlicensed bands. These networks are expected to be aware of the operating environment and learn to optimize their behavior accordingly. During this process they “evolve”, co-operate and compete with other networks, expect to receive rewards for their a...

-The future of Wireless Communication Technology is going to be basically based on Cognitive Radio (CR) or Intelligent Radio (IR). At present the Spectrum allocation governed by the government agencies or the service providers who are in need of more spectrums, to manage the increasing frequency demands from the end users as the technological improvement increases exponentially. Efficient utili...

Spectrum Mobility.to Cognitive Radio and the efficient management of spectrum and radio resources in reconfigurable systems. For this purpose, a technical publisher 2010 print to pdf approach for all.big gap between having a flexible cognitive radio, effectively a building block. cognitive radio brain-empowered wireless communications Deployment of cognitive radio networks publisher files to pd...

This paper proposes a novel routing protocol enriched with an assigning mechanism that enables for efficient data flow coordination, among communication nodes with heterogeneous spectrum availability in distributed cognitive radio networks. Efficient routing protocol operation, as a matter of maximum-possible routing paths establishments and minimum delays is obtained, by utilizing a signaling ...

This paper proposes a method to protect the communication band through machine learning in cognitive networks. A machine learning cognitive radio (MLCR) extracts features from the signal waveforms received from various radios. A machine learning radio user (MLRU) assigns the states, i.e., unauthorized/authorized, and the associated actions, i.e., interfering/no interfering, to each waveform. Th...

The emerging cognitive radio system can sense and adapt to the wireless environment in which it operates. Cognitive radio with intelligent capabilities of both radio link and network layers is capable of transmitting in an optimized way across the available signal dimensions allowing a potential huge increase in the prospects for spectrum efficiency, co-existence, compatibility and interoperabi...

Cognitive radios network is programmable wireless devices to monitor spectrum used, and networking protocol as needed for better network and application performance. In Cognitive radio networks detection of licensed user reappearance during the nonlicensed user transmission is very much required. This paper presents a spectrum monitoring algorithm in support of that purpose for OFDM based CR ne...

In this poster we discuss research challenges one needs to overcome to introduce intelligent methods to wireless communications. Recent research on cognitive radios has started to introduce machine learning and reasoning techniques to wireless networks. However, while these first steps with cognitive radios are certainly exciting, they have been very limited in scope, and collaborative aspects ...

Cognitive radio is the restorative technology to authorize the efficient usage of restricted natural resource radio frequency spectrum for the wireless devices. The technology empowers the telecommunication industry by renovating the traditional static spectrum access approach to dynamic spectrum access to stimulate the unlicensed users to access underutilized licensed band; without creating an...

Maritime cognitive radio networks (MCRNs) have recently been proposed for opportunistic utilization of the licensed band. Spectrum sensing is one of the key issues for the successful deployment of the MCRNs. The maritime environment is unique in terms of radio wave propagation over water, surface reflection and wave occlusions. In order to deal with the challenging maritime environment, we prop...