• Publications
  • Influence
Contributions towards the development of a UTD-based model for cellular radio propagation prediction
The performance of a UTD-based model for path loss prediction in cellular radio systems is investigated. The model's performance is shown to compare favourably with physical optics based techniques,Expand
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A Quantitative Analysis of Spectral Occupancy Measurements for Cognitive Radio
Cognitive radio (CR) is viewed as a possible solution to the problem of radio spectrum congestion. The CR technique utilizes a temporarily unoccupied licensed band. Before investigating the technicalExpand
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Outage Probability Estimation for Licensed Systems in the Presence of Cognitive Radio Interference
Cognitive radios (CRs) improve spectral efficiency by transmitting unlicensed signals over licensed frequency bands. A key requirement for CRs is to limit the interference to the licensed system.Expand
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Spectrum sensing using principal component analysis
In the recent past considerable research has been performed on blind signal detection techniques that exploit the covariance matrix of the signals received at a cognitive radio (CR). These techniquesExpand
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Assessment of GTD for mobile radio propagation prediction
The applicability of a GTD-based technique for path loss prediction in cellular radio systems is investigated. The bounds of applicability reported show that such a model could find application inExpand
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Prediction of breakpoint distance in microcellular environments
Experimental studies of path loss distance dependency in line-of-sight microcellular propagation almost always show a dual-slope behaviour. However, there is disagreement in the literature over theExpand
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An Investigation Into the Understanding and Skills of First-Year Electrical Engineering Students
In response to demands from industry and the profession for more graduates, first-year engineering numbers have grown considerably over the last decade, matched by an increasing diversity of academicExpand
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Modelling Propagation in Multi-Floor Buildings using the FDTD Method
A three-dimensional parallel implementation of the FDTD method has been used to identify and isolate the dominant propagation mechanisms in a multi-storey building at 1.0 GHz. A novel method toExpand
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Estimating Protection Distances in Spectrum Sharing Systems
In this paper, we analyze spectrum sharing on broadcast primary frequency bands. We employ protection regions (with size defined by protection distances) around the broadcast transmitter serviceExpand
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Modelling interference for indoor wireless systems using the FDTD method
A 2D TMz implementation of the Finite-Difference Time-Domain algorithm is used to model radio-wave propagation from multiple transmitter locations in an eight storey building. From the steady-stateExpand
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