Frequency selective transmit signal weighting for multiple...

Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train

Reexamination Certificate

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Details

C375S260000, C375S299000, C375S347000, C375S349000, C455S506000, C455S065000, C455S101000, C455S137000

Reexamination Certificate

active

07869537

ABSTRACT:
A system and method for generating transmit weighting values for signal weighting that may be used in various transmitter and receiver structures is disclosed herein. The weighting values are determined as a function of frequency based upon a state of a communication channel and the transmission mode of the signal. In variations, weighting of the weighted signal that is transmitted through each of a plurality of antennas is carried out with one of a corresponding plurality of transmit antenna spatial weights. In these variations, a search may be conducted over various combinations of transmit weighting values and transmit antenna spatial weights in order to find a weight combination that optimizes a performance measure such as the output signal-to -noise ratio, the output bit error rate or the output packet error rate.

REFERENCES:
patent: 6771706 (2004-08-01), Ling et al.
patent: 7020110 (2006-03-01), Walton et al.
patent: 7072413 (2006-07-01), Walton et al.
patent: 7177369 (2007-02-01), Crilly, Jr.
patent: 7535969 (2009-05-01), Catreux et al.
patent: 2003/0048856 (2003-03-01), Ketchum et al.
patent: 2004/0192218 (2004-09-01), Oprea

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