System and method for improving performance of an adaptive...

Details System and method for improving performance of an adaptive... System and method for improving performance of an adaptive...

2006-11-21

2006-11-21

Nguyen, Duc (Department: 2617)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S115100, C455S101000

Reexamination Certificate

active

07139593

ABSTRACT:
A system and method is disclosed for improving downlink performance of an adaptive antenna array in a vehicular environment. The system comprises a mobile station that has a first mobile antenna and a second mobile antenna. A spatial signature estimator associated with a base transceiver station obtains spatial signatures from signals from the first mobile antenna and from the second mobile antenna within an uplink interval. Correlation circuitry uses the spatial signatures to identify a least changing spatial signature to obtain an optimal downlink beamforming weight vector to be used in the transmission of a signal to the mobile station in the next downlink interval.

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