Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Frequency Domain Beamforming"”.
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A Frequency Domain Beamforming Method to Locate Moving Sound Sources
… of sound is derived. Currently available time domain de-Dopplerization techniques require oversampling and interpolation of the microphone time data. In contrast, the technique presented in this dissertation performs the de-Dopplerization entirely in the frequency domain eliminating the need …
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Simulation of Adaptive Array Algorithms for OFDM and Adaptive Vector OFDM Systems
… wideband waveforms. In this case, the channel is frequency-selective, that is, a large number of resolvable multipaths are present in this environment and fading is not highly correlated across the band. Orthogonal frequency division multiplexing (OFDM) is well-known to be effective against …
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Beamforming for MC-CDMA
Orthogonal Frequency Division Multiplexing (OFDM) has recently gained a lot of attention and is a potential candidate for Fourth Generation (4G) wireless systems because it promises data rates up to 10Mbps. A variation of OFDM is Multi-Carrier CDMA (MC-CDMA) which is an OFDM technique where the …
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A Scanning Bi-static SODAR
… above a vertically transmitting antenna using frequency domain beamforming. The scanning capability of the receivers is demonstrated in field experiments, whose results motivated the development of a new theory about the effect of the displacement of sound by the mean wind field on bi-static …
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Constrained Spectral Conditioning for the Spatial Mapping of Sound
… Sidelobe Canceller (GSC). A cross-spectral, frequency-domain filter is created using the GSC methodology to edit the CSA formulation. The only constraint needed is the user-defined, relative phase difference between the channel being filtered and the reference channel used for filtering. This …
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Space Time Processing for Third Generation CDMA Systems
… the signal both in the spatial and temporal domain. An ideal 2-D receiver would perform joint space-time processing, but at the price of high computational complexity. In this dissertation we investigate computationally simpler technique termed as a Beamformer-Rake. In a Beamformer-Rake, the …