Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2008-03-04
2008-03-04
Ha, Dac V. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S267000, C375S347000, C375S349000, C455S133000, C455S137000, C455S277100
Reexamination Certificate
active
10764040
ABSTRACT:
Wireless communication systems and methods are provided that a) enable progressive beamforming with antenna arrays and subarrays, b) provide current and delayed versions of data-carrying signals, and c) provide time-of-arrival of data-carrying signals. The progressive beamforming substantially reduces computational complexity. The current and delayed versions of data-carrying signals facilitate optimization of spatial information and optimization of information from non-coherent delays (which are delays beyond the handling capability of a system's modulation). The time-of-arrival information is used to facilitate a single matrix inversion which substantially reduces the complexity of conventional beamforming computations.
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Calamp Corp.
Ha Dac V.
Koppel, Patrick, Heybl & Dawson
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