ACES Publication Search
Displaying results 11 - 20 of 24 matches (0.01 seconds)
March 2008 Publication Report | |
ACES Newsletter Paper | |
Year: 2008      Volume: 23      Number: 1 | |
Click here to download PDF File Size: 432 KB |
Full Newsletter | |
ACES Newsletter Paper | |
Year: 2007      Volume: 22      Number: 1 | |
Click here to download PDF File Size: 1004 KB |
March 2008 Full Newsletter | |
ACES Newsletter Paper | |
Year: 2008      Volume: 23      Number: 1 | |
Click here to download PDF File Size: 9015 KB |
2007 ACES Confrence Agenda | |
ACES Newsletter Paper | |
Year: 2007      Volume: 22      Number: 1 | |
Click here to download PDF File Size: 362 KB |
Shadowing Effect on the Area Spectral Efficiency of a Macro-Femto Heterogeneous Network for Cell-Edge UsersM. C. Uko, S. C. Ekpo, U. Ukommi, R. Kharel
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ACES Conference Paper | |
Year: 2015 - S04 Antenna Applications I | |
Click here to download PDF File Size: 285 KB | |
For rural and urban environment, the combined effect of the multiple impairments like multipath fading and shadowing result in faster reduction in the average signal strength as the distance from the single macrocell transmitter increases. |
Acoustic Noise Characterization in Dynamic Systems using an Embedded Measurement PlatformB. Adebisi, S. C. Ekpo, A. Sabagh, A. Wells
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ACES Conference Paper | |
Year: 2014 - Microphone Arrays, Sonar Arrays, Directional Radio Antenna Arrays, Radar Arrays and Other Sensor Arrays | |
Click here to download PDF File Size: 332 KB | |
The modelling of an acoustic beamforming in a dynamic system characterized by time-variant state variables requires a reliable knowledge of the noise conditions of the environment and sensor subsystems. |
Gain Enhancement of Acoustic Beamforming Arrays in Complex Dynamic SystemsS. C. Ekpo, B. Adebisi, A. Sabagh, A. Wells
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ACES Conference Paper | |
Year: 2014 - Microphone Arrays, Sonar Arrays, Directional Radio Antenna Arrays, Radar Arrays and Other Sensor Arrays | |
Click here to download PDF File Size: 745 KB | |
Acoustic beamforming in complex dynamic systems is a non-trivial task given the time-variant nature of system variables. |
Area Spectral Efficiency of a Macro-Femto Heterogeneous Network for Cell-Edge Users under Shadowing and Fading EffectsM. C. Uko, U. S. Ukommi, S. C. Ekpo, R. Kharel
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ACES Journal Paper | |
Year: 2016      Volume: 31      Number: 9 | |
Click here to download PDF File Size: 1730 KB | |
The traditional macro-only network is not
effective, especially when communication signal is
required for users far away from the macrocell base
station and located in the cell edge. The signal strength
reaching these users is excessively attenuated due to
fading and shadowing. The deployment of femtocells
around the cell edge of this macrocell helps to reduce the
effect of fading and shadowing thereby increasing the
overall efficiency of the cellular network. This holds a
great promise for adaptive space-based wireless sensor
networks, formation-flying satellites and constellations. |
Optimisation of the FGT for Electroheat Multiphysics ModellingS. Ekpo, A. Sunday, E. Ekpo
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ACES Conference Paper | |
Year: 2009 - Challenges in Scattering, Radiation and Multi-domain Modeling | |
Click here to download PDF File Size: 153 KB | |
Multiphysics modelling of coupled systems is indispensable for accurate, reliable and objective characterization of electroheat phenomena. This paper examines the usefulness of the Fourier series and Green’s function methods for deriving the analytical solutions of such models. An optimized Fourier-Green technique (FGT) is vital for accurate model description and analysis. A numerical solution for a EM-heat flow model was realized for an aluminium metal sample using F90 program code and F95 compiler.
A homogeneous time-dependent E-field (μV/m) source, consisting of 500 time steps, was used to study the temperature distribution of the metal sample. The results satisfy the set initial and boundary conditions. Besides, the visualisations show that the temperature profile increases towards the centre, averaging 20oC within the bulk of the sample. The optimized FG function promises to revolutionise biomedical applications of EM-based heating, communications devices, RF and microwave heating and industrial processes amongst others. |
Parameters Update Integration in EM Analysis of ATL and PTL in the FDMS. Ekpo, A. Sunday, E. Ekpo
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ACES Conference Paper | |
Year: 2008 - Advanced Transmission Lines Modeling, Macromodeling and Signal Integrity | |
Click here to download PDF File Size: 136 KB | |
The modeling of artificial and planar transmission lines for microwave communications is as critical as the premium set on the bandwidth of the line. Reflectionless networks are ideal for realizing the -3dB signal transmission margin. This paper proposes an electromagnetically (EM)-engineered measurement environment where the parameters of the frequency domain (FD) analysis of the ATL and PTL are adaptively and proactively updated for circuits characterization. This novelty promises immense enhancement in the channel characterization of TEM and dispersive transmission lines. |