Vahid Dehghanian

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—The combined spatial-polarization correlation function for indoor multipath environments is discussed. An analytical model based on an isotropic receiving antenna and a sphere of scatterers is developed for quantifying signal decorrelation as a function of antennas' spatial and orientation separation. A closed form expression is deduced for the combined(More)
Size and cost considerations of handheld terminals limit the use of antenna array for combating multipath fading in these applications. Recently, a synthetic array based on moving a single antenna was proposed for handheld terminals. This technique however fails to provide enough diversity gain when the channel is spatially correlated. A combination(More)
A novel configuration for improving the frequency tracking performance of GNSS signals in multipath environments is proposed. The proposed technique is based on combining the weakly correlated outputs of Early, Prompt and Late match filters to exploit the inherent time-delay diversity when severe multipath conditions prevail. By observing more code-phase(More)
1 vdehghan@ucalgary.ca 2 mzaheri@ucalgary.ca 3 nielsenj@ucalgary.ca 4 lachapel@ucalgary.ca Abstract—Size and cost considerations of handheld terminals limit the use of antenna array for combating multipath fading in these applications. Recently, a synthetic array based on moving a single antenna was proposed for handheld terminals. This technique however(More)
A novel technique for synthesizing an array of antenna elements with multiple polarization characteristics based on angular movements of a single antenna is developed. The diversity performance of the synthesized antenna array is then compared to that of a single static antenna through an extensive set of measurements based on capturing the CDMA 2000(More)
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