Stephen T. Harrison

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The mathematical theory of the time-compression overlap add scheme for radio communications is presented. A simple time-shifting model is developed to explore performance in AWGN and multipath Rayleigh fading channels. Equivalent multirate filter structures for both the transmit and receive processes are developed and used to analyze the spectrum of the(More)
The application of a recently developed broadband beamformer to distinguish audio signals received from different directions is experimentally tested. The beamformer combines spatial and temporal subsampling using a nested array and multirate techniques which leads to the same region of support in the frequency domain for all subbands. This allows using the(More)
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