The performance analysis, using outage capacity for a forward link cellular communications system is presented. The effects of correlated fading, the distribution of angle of arrivals, and the array configurations are considered. The objective is to examine the effect of angle of arrival (AOA) energy distributions on two systems (transmit diversity and beamforming) with angle spread. We do so b...

Here we study particle motion in the specific Lorentzian wormhole spacetime characterized, addition to total mass M, with dimensionless parameter ?. In particular calculate radius of innermost stable circular orbit (ISCO) for test particles and photonsphere massless particles. We show that effect decreases ISCO photon orbit. Then, plasma effects on gravitational weak lensing obtain deflection a...

the potential error magnitudes associated with angle bias. The effect of turbulence is also shown in comparing Figs. 2a and 2b. As would be expected, the increased turbulence tends to increase the PPD when the mean flow angle is close to parallel to the fringe planes. However, the PPD is slightly reduced when the mean flow angle is close to perpendicular to the fringe planes. Of particular inte...

Zoltowski and Kautz recently developed a beamspace domain based 1D angle estimation scheme for uniform linear arrays that allows one to solve for the arrival angles of plane waves via the roots of a small order polynomial and works with any type of front end beamformer. This paper extends their approach to the more general case of 2D angle estimation with a uniform rectangular array (URA) of se...

The Bremmer coupling series solution of the wave equation, in generally inhomogeneous media, requires the introduction of pseudodifferential operators. Such operators appear in the diagonalization process of the acoustic system’s matrix of partial differential operators upon extracting a principal direction of (one-way) propagation. In this paper, in three dimensions, uniform asymptotic expansi...

scatterometer optimized for near angle measurements. The system relies on a unique beam apodization scheme using gas phase absorption to produce a Gaussian pupil function. Initial results show two orders of magnitude improvement over a previous design employing a uniform pupil function. The background signature is approaching sufficient levels to measure small angle scatter from high quality EU...

A POSS-PMMA copolymer has been synthesised by conventional free-radical polymerisation reaction. Uniform electrospun fibres from this copolymer showed a water contact angle as high as 165 degrees with a sliding angle as low as 6 degrees . For the first time, we found that the electrospun fibres had a bundled nanofibril secondary structure with an ordered POSS morphology on the fibre surface.