Marvellworld Trade Ltd.

Cohere Technologies, Inc.

Applied Micro Circuits Corporation

Terayon Communications Systems, Inc.

Terayon Communication Systems, Inc.

Volex Plc

Robert Fanfelle

Raja Banerjea

Ronny Hadani

Paul Aerick Lambert

Milind Kopikare

Shlomo Selim Rakib

Andreas Molisch

Yoav Hebron

Richard Benner

Michail Konstantinos Tsatsanis

Jim Delfeld

Clayton Ambrose

Harish Ramamurthy

James Delfeld

Millind Mittal

Selim Shlomo Rakib

Shachar Kons

Oren Arad

Alexander Hubris

Paul Alan Lind

Saurabh Misra

Paul Lind

Methods, devices, and systems for communication techniques that use the quasi-static properties of wireless channels are described. One example method to improve communication performance includes receiving a set of pilots over a transmission channel between the wireless communication apparatus and a far-end communication apparatus, the transmission channel comprising a first portion that is time-invariant and a second portion that is time-variant, processing the received set of pilots to generate an estimate of the first portion, processing the received set of pilots to generate an estimate of the second portion, and performing a communication based on a channel state information that is a weighted combination of a first term based on the estimate of the first portion and a second term based on the estimate of the second portion.

Communication techniques using quasi-static properties of wireless channels

Techniques for performing channel estimation in an orthogonal time, frequency and space (OTFS) communication system include receiving a wireless signal comprising a data signal portion and a pilot signal portion in which the pilot signal portion includes multiple pilot signals multiplexed together in the OTFS domain, performing two-dimensional channel estimation in a time-frequency domain based on a minimum mean square error (MMSE) optimization criterion, and recovering information bits using a channel estimate obtained from the two-dimensional channel estimation.

Channel acquisition using orthogonal time frequency space modulated pilot signals

A fixed wireless access system is implemented using orthogonal time frequency space multiplexing (OTFS). Data transmissions to/from different devices share transmission resources using&#x2014;delay Doppler multiplexing, time-frequency multiplexing, multiplexing at stream and/or layer level, and angular multiplexing. Time-frequency multiplexing is achieved by dividing the time-frequency plan into subgrids, with the subsampled time frequency grid being used to carry the OTFS data. Antenna implementations include a hemispherical antenna with multiple antenna elements arranged in an array to achieve multiplexing.

Fixed wireless access using orthogonal time frequency space modulation

Methods, devices and systems for communication techniques that use the quasi-static properties of wireless channels are described. One example method to improve communication performance includes receiving a set of pilots over a transmission channel between the wireless communication apparatus and a far-end communication apparatus, the transmission channel comprising a first portion that is time-invariant and a second portion that is time-variant, processing the received set of pilots to generate an estimate of the first portion, processing the received set of pilots to generate an estimate of the second portion, and performing a communication based on a channel state information that is a weighted combination of a first term based on the estimate of the first portion and a second term based on the estimate of the second portion.

Device, methods and systems for aspects of channel estimation for orthogonal time frequency space (OTFS) modulation in wireless systems are described. In an aspect, a method for wireless communication may include receiving, using multiple receive antennas, from a number of user devices, non-orthogonal pilots wherein at least some transmissions of the non-orthogonal pilots from different user devices overlap in at least some time and frequency resources, estimating individual pilots from the number of user devices by computing a pilot separation filter for each antenna, and estimating the wireless channel at time and frequency resources used by the non-orthogonal pilots by filtering the receiving signal at the multiple receiver antennas.

Aspects of channel estimation for orthogonal time frequency space modulation for wireless communications

The computer-implemented method includes simulating, by a processor, using an electromagnetic solver including ray launching or ray tracing, multiple rays that reach a vicinity of a receiver of a wireless channel, determining locations of interactions of the rays with an environment of the wireless channel, post-processing, using one or more of the multiple rays, information about received signal at the receiver to obtain temporal variations therein, and determining a characteristic of the wireless channel using results of the post-processing.

Ray tracing technique for wireless channel measurements

An antenna system includes a lens portion that has a spherical surface, and an antenna feed structure coupled to a surface of the lens portion. The antenna feed structure includes one or more feed tiles supported by an electrical connectivity layer conforming to the spherical surface. The antenna system also includes one or more offset structures positioned between the one or more feed tiles and an outer surface of the antenna system.

Low cost electromagnetic feed network

Described are devices, systems and methods for scheduling multi-user (MU) multiple input multiple output (MIMO) transmissions in a fixed wireless access (FWA) system. One method for scheduling a large number of user devices in a wireless communication system includes a preselection process to pare down the number of user devices to be simultaneously scheduled, and then scheduling that subset of users. In an example, and assuming each user device communicates over a corresponding wireless channel, the preselection process includes determining a number of sets based on a first characteristic of the wireless channels, where each set includes at least one user device, and then determining a subset of user devices by selecting at most one user device from each of the sets. The scheduling of the selected subset of users is based on a scheduling algorithm and a second characteristic of the wireless channels.

Scheduling multi-user MIMO transmissions in fixed wireless access systems

Channel acquistion using orthogonal time frequency space modulated pilot signal

An antenna system includes an antenna lens, and one or more antenna feeds placed at an on or off-focal point of the antenna lens. Each of the one or more antenna feeds comprises one or more antenna feed elements that are electrically independently operable. The antenna system also includes an antenna feed network electrically coupled with the one or more antenna feed elements via signal paths.

Variable beamwidth multiband antenna

A device for wirelessly communicating between one or more mobile communication devices over a wireless network. A primary mobile communication device is configured to establish one or more connections to one or more secondary mobile communication devices. The primary mobile communication device is further configured to establish a first connection and a second connection to at least one of the secondary mobile communication devices. The first connection is a Bluetooth (BT) connection and the second connection is a Wireless Fidelity (WiFi) connection. The primary mobile device is also configured to establish a third connection to another secondary mobile communication device wherein the third connection is a WiFi connection. Additionally, the primary mobile communication device is configured to simultaneously maintain the BT connection and the WiFi connections during the bi-directional transmission of data between the primary mobile communication device and the secondary mobile communication devices.

Growing community of inventors

Redwood City, CA, United States of America

Robert Fanfelle