Systems and methods for radio frequency calibration exploiting channel reciprocity in distributed input distributed output wireless communications

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United States of America

PATENT NO 12237888
APP PUB NO 20240380447A1
SERIAL NO

18779453

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Abstract

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Systems and methods are described for radio frequency (RF) calibration in a multiple antenna system (MAS) with multi-user (MU) transmissions (“MU-MAS”) exploiting uplink/downlink channel reciprocity. The RF calibration is used to compute open-loop downlink precoder based on uplink channel estimates, thereby avoiding feedback overhead for channel state information as in closed-loop schemes. For example, a MU-MAS of one embodiment comprises a wireless cellular network with one or multiple beacon stations, multiple client devices and multiple distributed antennas operating cooperatively via precoding methods to eliminate inter-client interference and increase network capacity.

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Patent Owner(s)

  • REARDEN, LLC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Forenza, Antonio San Francisco, US 79 4705
Perlman, Stephen G Palo Alto, US 323 18385
Pitman, Timothy A San Francisco, US 10 134
Saibi, Fadi Sunnyvale, US 31 501

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