Silvus Technologies, Inc.

University of California

Weijun Zhu

Babak Daneshrad

Ajit Warrier

Anish Narendra Shah

Neema Daneshvar

Chris Nersesyan

Jimi Henderson

Mansour Rachid

Hun-Seok Kim

Yi Jiang

Phillip James Duncan

Gaelen Stanislaus Pereira

Jean-Francois (jf) Frigon

Karim Mohammed

A wireless communication system may include a plurality of nodes that use a medium access control (MAC) protocol to communicate over a shared medium or a primary channel. The MAC protocol may include a non-transmitting state during which one or more nodes are silent in the primary channel while two nodes in the wireless communication system are in communicating over the primary channel. Systems and methods described herein use medium access protocol (MAC) underlay signaling, which may include measuring or sensing availability for spectrum or transmitting data without the loss of network throughput over a secondary channel in a wireless communications system. In some embodiments, the systems and methods described herein use dynamic spectrum access (DSA) protocols to switch the channel of communication in the wireless communication system.

Single transceiver-DSA via MAC-underlay sensing and signaling

A graphical user interface for use with one or more radios in a network can include any number of interfaces for providing access to features associated with one or more radios or the network.

User interface for MIMO networks

Display screen or portion thereof with a graphical user interface

Methods and systems for mitigating interference or estimating a covariance matrix in a communication system are disclosed. A method of demodulating a received signal in a communication system can include receiving a first plurality of waveforms, estimating a covariance matrix based on the first plurality of waveforms, determining a spatial filter based on the estimated covariance matrix, receiving a second plurality of waveforms, generating at least one filtered waveform by applying the spatial filter to the second plurality of waveforms, and demodulating the at least one filtered waveform.

Interference mitigation for devices with multiple receivers

Certain disclosed embodiments pertain to suppressing interference in a wireless communication system. For example, a method of suppressing interference can include receiving one or more first signals including components from a plurality of sub-channels. Each of the first signals can be converted into a respective plurality of first sub-band frequency components. A respective spatial filter can be determined for each frequency sub-band using one or more corresponding first sub-band components for each respective spatial filter. One or more second signals including components from the plurality of sub-channels can be received. Each of the second signals can be converted into a respective plurality of second sub-band frequency components. A corresponding plurality of filtered sub-band components can be generated by applying the respective spatial filters to the corresponding second sub-band components for each of the second signals.

Wideband interference mitigation for devices with multiple receivers

Methods and systems for mitigating interference or estimating a covariance matrix in a communication system are disclosed. In some embodiments, a method of demodulating a received signal in a communication system includes receiving a first plurality of waveforms, estimating a covariance matrix based on the first plurality of waveforms, determining a spatial filter based on the estimated covariance matrix, receiving a second plurality of waveforms, generating at least one filtered waveform by applying the spatial filter to the second plurality of waveforms, and demodulating the at least one filtered waveform.

Some embodiments disclosed herein provide a signal decoder with a general purpose calculation engine. A system for decoding signals in a wireless communication system can include: a controller including an instruction counter; a program memory configured to store program code for operating the controller; a general purpose calculation engine configured to perform primitive operations derived from algorithms for decoding a plurality of coded signals received via a plurality of receive antennas; and a data memory connected to the general purpose calculation engine for storing data generated by the general purpose calculation engine while performing the primitive operations.

Growing community of inventors

Los Angeles, CA, United States of America

Weijun Zhu