Rearden Corporation

Samsung Electronics Co., Ltd.

The University of Texas System

Intellectual Ventures Holding 81 LLC

Antonio Forenza

Stephen G Perlman

Fadi Saibi

Timothy A Pitman

Mario Di Dio

Roger Van Der Laan

Robert Wendell Heath, Jr

John Speck

Erik David Lindskog

Benyavut Jirasutayasuntorn

Lynne Freeman

Robert J Andrzejewski

Allan Ievers

Benyavut Jirasutavasuntorn

Ho-Jin Kim

Ho Rim Yang

Robert W Heath

Pandharipande Ashish

Hyoung-Woon Park

Manish Airy

Marios Kountouris

Systems and methods are described to concurrently utilize actively used spectrum for new TDD or FDD networks, and also for enabling Distributed-Input Distributed Output (DIDO) techniques to be used with both the new networks and the existing networks in the same spectrum.

Systems and methods for concurrent spectrum usage within actively used spectrum

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 includes 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.

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

Systems and methods are described to mitigate interference to out of band receivers using out of band training signals.

Systems and methods for mitigating interference within actively used spectrum

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.

Systems and methods are described to create radio daisy chains for convenient and aesthetically pleasing high-density radio deployments.

Systems and methods for distributing radioheads

A system and method are described for distributed antenna wireless communications. For example, a method implemented within a wireless transmission system comprised of a plurality of wireless client devices and a plurality of distributed antennas is described comprising: computing channel state information (CSI) for wireless communication channels between the plurality of base distributed antennas and the wireless client devices; computing precoding weights from the channel state information; precoding data using the precoding weights prior to wireless transmission from the plurality of distributed antennas to the wireless client devices; and wirelessly transmitting the precoded data from the distributed antennas to each of the wireless client devices, wherein the precoding causes radio frequency interference between the plurality of base stations but simultaneously generating a plurality of non-interfering radio frequency user channels between the plurality of distributed antennas and the plurality of wireless client devices.

System and method for distributed antenna wireless communications

A multiple antenna system (MAS) with multiuser (MU) transmissions ('MU-MAS') exploiting inter-cell multiplexing gain via spatial processing to increase capacity in wireless communications networks.

Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology

Systems and methods are described for exploiting inter-cell interference to achieve multiplexing gain in a multiple antenna system (MAS) with multi-user (MU) transmissions ('MU-MAS'). For example, a MU-MAS of one embodiment comprises a wireless cellular network with multiple distributed antennas operating cooperatively to eliminate inter-cell interference and increase network capacity exploiting inter-cell multiplexing gain.

Growing community of inventors

Palo Alto, CA, United States of America

Antonio Forenza