Results 111 to 120 of about 128,917 (278)
Directive Antenna Clutter Loss in Slant Paths
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT This paper investigates the development of a clutter loss model specifically for slant paths involving directive antennas. Conventionally, clutter loss is characterized by using isotropic antennas to facilitate standard link budget calculations via single antenna gain values.
Fernando Pérez Fontán +4 more
wiley +1 more source
Journal of Engineering and Sustainable Development, 2008 Orthogonal frequency division multiplexing (OFDM) or multicarrier transmission has been shown to be an effective technique to combat multipath fading in wireless Communications.
Ghanim Abd AlKareem
doaj
Integrated X‐Ray, Gamma Radiation, and Micro‐CT Techniques for Quantitative Wood Characterization
X-Ray Spectrometry, EarlyView.ABSTRACT The present research integrates microcomputed tomography (micro‐CT), x‐ray fluorescence, and gamma‐ray transmission to quantitatively characterize wood species. A total of 22 samples from seven species were analyzed for density (ρ), linear attenuation coefficient (μ), Compton scattering, micro‐CT gray values (GV), porosity, mass attenuation ...
Roberta M. S. P. Borges +7 more
wiley +1 more source
Capacity of fully correlated MIMO system using character expansion of groups
International Journal of Mathematics and Mathematical Sciences, 2005 It is well known that the use of antenna arrays at both sides of communication link can result in high channel capacities provided that the propagation medium is rich scattering.
Ejaz Khan, Conor Heneghan
doaj +1 more source
, 2005 A full-rate, full-diversity Adaptive Space Time Block Coding (ASTBC) scheme based on Singular Value Decomposition (SVD) is proposed for transmission over Rayleigh fading channels.
Hanzo, L., Ng, S.X., Yeap, B.L.
core
Experimental Factors and Techniques for Pool Boiling Heat Transfer Enhancement: A Critical Review
Heat Transfer, Volume 55, Issue 4, Page 2201-2232, June 2026.ABSTRACT This review presents a comprehensive assessment of active strategies for enhancing pool boiling heat transfer, with a focus on techniques that do not rely solely on the boiling surface modification. It examines a broad range of methodologies including fluid additives, external fields, mechanical interventions, and thermal‐geometric tuning that
José E. Pereira +2 more
wiley +1 more source
NMR in Biomedicine, Volume 39, Issue 6, June 2026.Our hierarchical Bayesian modelling (HBM) technique is demonstrated in two neuroimaging diffusion MRI models. When compared with least‐squares (LSQ) minimisation, HBM increased the accuracy, precision, contrast‐to‐noise ratio and parameter map quality in simulated and human data. HBM also resolved local parameter variations associated with white matter
Elizabeth Powell +5 more
wiley +1 more source
EURASIP Journal on Advances in Signal Processing, 2008 A detailed analysis of the multiple access interference (MAI) for synchronous downlink CDMA systems is carried out for BPSK signals with random signature sequences in Nakagami-m fading environment with known channel phase.
M. Deriche +3 more
doaj +1 more source
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 9, 16 May 2026.Abstract Spaceborne radar systems such as the Global Precipitation Measurement Mission (GPM)'s core satellite Dual‐frequency Precipitation Radar (DPR) provide global insight into precipitation structure, storm morphology, and hydrological cycles. However, their limited spatial and temporal sampling and high cost constrain their ability to continuously ...
Florian Morvais, Chuntao Liu
wiley +1 more source
Radial Basis Function Aided Space-Time Equalization in Dispersive Fading Uplink Environments
, 2005 A novel Radial Basis Function Network (RBFN) assisted Decision-Feedback aided Space-Time Equalizer (DF-STE) designed for receivers employing multiple antennas is proposed.
Chen, S., Hanzo, L., Wolfgang, A.
core