Electronic & Electrical Eng (Scholarly Publications): Recent submissions
Now showing items 501-520 of 610
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FSMA - A topology-transparent scheme for opportunistic spectrum access
(IEEE, 2007)With the advent of cognitive radio technology, new paradigms for spectrum access can achieve near-optimal spectrum utilization by letting users sense and utilize available spectrum opportunistically. Recently, graph-coloring ... -
Cyclostationary signatures for rendezvous in OFDM-based dynamic spectrum access networks
(IEEE, 2007)Abstract?Distributed coordination of operating frequencies and bandwidths is one of the key challenges in the development of dynamic spectrum access (DSA) technology. The spectrum efficiency of DSA networks is achieved ... -
Towards a fluid spectrum market for exclusive usage rights
(IEEE, 2007)This paper focuses on highly fluid markets for trading exclusive spectrum usage-rights. The purpose of the paper is to underline the need for flexible usage-rights policies, as a core facilitator of such markets as well ... -
Exclusivity, externalities & easements: Dynamic spectrum access and coasean bargaining
(IEEE, 2007)This paper explores the possibility of realising Coasean bargains to remove the presence of externalities in a libertarian system of exclusive spectrum rights through the creation of various economically motivated easements. ... -
Dynamic spectrum access and coexistence experiences involving two independently developed cognitive radio testbeds
(IEEE, 2007)The Centre for Telecommunications Value-Chain Research (CTVR) and the Center for Wireless Telecommunications (CWT) are carrying out joint research work investigating the potential of different software-defined radio ... -
Demonstration and analyses of collaboration, co-existence, and interoperability of cognitive radio platforms
(IEEE, 2007)The Centre for Telecommunications Value-Chain Research (CTVR) and the Center for Wireless Telecommunications (CWT) are undertaking a joint collaborative research project investigating the potential of different ... -
A multi-hop ARQ protocol for underwater acoustic networks
(IEEE, 2007)Underwater acoustic networks are envisaged to be the enabling technology for oceanographic data collection, pollution monitoring, offshore exploration and tactical surveillance applications. Unique characteristics of ... -
An encapsulation for reasoning, learning, knowledge representation, and reconfiguration cognitive radio elements
(IEEE, 2007)State and contextual awareness, reasoning and conclusions formation, and a means of directing application, structural and parameter-level radio reconfiguration are key elements of a cognitive radio. This paper describes a ... -
A reconfigurable platform for cognitive networks
(IEEE, 2007)By introducing self-awareness and computational intelligence to reconfigurable radio networks, cognitive networks are viewed as the key to a new generation of self-configuring, self-optimizing and self-healing communications ... -
Enabling dynamic spectrum access using SS-MC-CDMA
(IEEE, 2007)The demand for frequency spectrum and diversity of wireless devices accessing this spectrum depends upon the time of day, the characteristics of a frequency band, and the geographical location of the observer/wireless ... -
A path forwards for Cognitive Radio research
(2007)The Cognitive Radio research field has seen great enthusiasm and rapid growth in the number of active researchers, papers published, conference sessions and journal special issues. This paper presents the author's views ... -
Exploring the reconfigurability options of multi-carrier CDMA in cognitive radio systems
(IEEE, 2007)The ever-increasing demands for access to frequency spectrum and more efficient methods of using this spectrum involving multi-carrier techniques are driving the development of reconfigurable and cognitive wireless devices. ... -
Cyclostationary signatures in practical cognitive radio applications
(IEEE, 2008)We define a cyclostationary signature as a feature which may be intentionally embedded in a digital communications signal, detected through cyclostationary analysis and used as a unique identifier. The purpose of this paper ... -
Combinatorial clock auction for OFDMA-based cognitive wireless networks
(IEEE, 2008)This paper presents a novel application of a market-based spectrum assignment mechanism for exploitation by cognitive radio systems. Advances in DSA policy mean that regulators are moving towards a more liberalised ... -
Bandwidth-adaptive waveforms for dynamic spectrum access networks
(IEEE, 2008)This paper presents a novel solution to the challenge of waveform bandwidth estimation in DySPAN systems using intentionally embedded cyclostationary signatures. Dynamic spectrum access networks (DySPANs) achieve high ... -
Microstructural investigation supporting an abrupt stress induced transformation in amorphous carbon films
(American Institute of Physics, 2009)The intrinsic stress of carbon thin films deposited by filtered cathodic arc was investigated as a function of ion energy and Ar background gas pressure. The microstructure of the films was analyzed using transmission ... -
In situ investigation of thermally influenced phase transformations in (pb0.92sr0.08) (zr0.65ti0.35)o3 thin films using micro-raman spectroscopy and x-ray diffraction
(IEEE, 2009)Thin films of ferroelectric strontium-doped lead zirconate titanate [PSZT, (Pb0.92Sr0.08)(Zr0.65Ti0.35)O3] deposited by RF magnetron sputtering have been analyzed by in situ analysis techniques. The in situ techniques ... -
Design of One-dimensional Photonic Crystals Using Combination of Band Diagram and Photonic Gap Map Approaches
(American Institute of Physics, 2008)The design of one-dimensional photonic crystals and the analysis of their optical properties have been performed using band diagram and forbidden gap map methods. It has been shown that the latter method is more useful for ... -
Rotation detection using the Curl equation
(IEEE, 2007) -
Feature-based object modelling for visual surveillance
(IEEE, 2008)
