公开(公告)号：US10693692B2

公开(公告)日：2020-06-23

申请号：US16084791

申请日：2017-03-23

Applicant: Cohere Technologies

Inventor： Ronny Hadani ,  Shlomo Selim Rakib ,  Anthony Ekpenyong ,  Clayton Ambrose ,  Shachar Kons

IPC: H04L27/26 ,  H04L5/00 ,  H04L1/00 ,  H04B7/0413

Abstract: Wireless communication techniques for transmitting and receiving reference signals is described. The reference signals may include pilot signals that are transmitted using transmission resources that are separate from data transmission resources. Pilot signals are continuously transmitted from a base station to user equipment being served. Pilot signals are generated from delay-Doppler domain signals that are processed to obtain time-frequency signals that occupy a two-dimensional lattice in the time frequency domain that is non-overlapping with a lattice corresponding to data signal transmissions.

公开(公告)号：US20190173617A1

公开(公告)日：2019-06-06

申请号：US16273649

申请日：2019-02-12

Applicant: Cohere Technologies

Inventor： Shachar Kons ,  Ronny Hadani ,  Christian Ibars Casas

IPC: H04L1/00 ,  H04L27/26 ,  H04L5/00 ,  H04L27/02

Abstract: A wireless communication method for transmitting wireless signals from a transmitter includes receiving information bits for transmission, segmenting the information bits into a stream of segments, applying a corresponding forward error correction (FEC) code and an interleaver to each of the stream of segments and combining outputs of the interleaving to generate a stream of symbols, processing the stream of symbols to generate a waveform, and transmitting the waveform over a communication medium.

公开(公告)号：US20190036741A1

公开(公告)日：2019-01-31

申请号：US16148922

申请日：2018-10-01

Applicant: Cohere Technologies, Inc.

Inventor： Ronny Hadani ,  Shachar Kons

IPC: H04L25/03 ,  H04L1/00

CPC classification number: H04L25/03012 ,  H04L1/005 ,  H04L1/0054 ,  H04L25/00 ,  H04L25/0208 ,  H04L25/0212 ,  H04L25/03159 ,  H04L25/03178 ,  H04L25/03286 ,  H04L25/03318 ,  H04L25/08 ,  H04L27/2639 ,  H04L27/2647

Abstract: An iterative two dimension equalizer usable in a receiver of orthogonal time frequency space (OTFS) modulated signals is described. In one configuration of the equalizer, a forward path generates, from received time-frequency domain samples and a channel estimate, estimates of data bits and likelihood numbers associated with the estimates of data bits, generated by delay-Doppler domain processing. In the feedback direction, the estimates of data bits are used to generate symbol estimates and autocorrelation matrix estimate in the time domain. In another configuration, a soft symbol mapper is used in the feedback direction for directly generating the feedback input symbol estimate without having to generate estimates of data bits.

公开(公告)号：US12289148B2

公开(公告)日：2025-04-29

申请号：US17633159

申请日：2020-08-05

Applicant: Cohere Technologies, Inc.

Inventor： Shlomo Selim Rakib ,  Shachar Kons ,  Ronny Hadani

IPC: H04B7/06 ,  H04B7/10 ,  H04L5/14

Abstract: Methods, systems, and devices for spectral sharing wireless systems, wherein multiple user devices share time and frequency resources for uplink and/or downlink transmissions, are described. One example method includes transmitting transmission symbols from the network station to at least one user device by processing through a first precoder and a pre-compensation stage, wherein the pre-compensation stage is selected to have the transmission symbols receivable at the at least one user device to appear as if the transmission symbols are processed by a second precoder different from the first precoder.

公开(公告)号：US12231266B2

公开(公告)日：2025-02-18

申请号：US18624914

申请日：2024-04-02

Applicant: Cohere Technologies, Inc.

Inventor： Shachar Kons ,  Ronny Hadani ,  Paul Harris

IPC: H04L25/02 ,  H04B7/0413 ,  H04L5/00

Abstract: A wireless communication method includes receiving, by a first wireless device during a training phase, reference tones using a first number of resource elements from a transmitter of a second wireless device, wherein the first wireless device comprises multiple receiving antennas, estimating, by the first wireless device, from the receiving the reference tones, a second order statistics of wireless channels between the multiple receiving antennas and the transmitter of the second wireless device, and performing channel estimation, during an operational phase subsequent to the training phase, using the second order statistics and reference tones received on a second number of resource elements, wherein the second number is less than the first number.

公开(公告)号：US11962373B2

公开(公告)日：2024-04-16

申请号：US17754206

申请日：2020-09-28

Applicant: Cohere Technologies, Inc.

Inventor： Shlomo Selim Rakib ,  Ronny Hadani ,  Shachar Kons

IPC: H04L5/00 ,  H04B7/0408 ,  H04B7/0456 ,  H04L5/14

CPC classification number: H04B7/0456 ,  H04B7/0408 ,  H04L5/0023 ,  H04L5/0062 ,  H04L5/14

Abstract: A wireless communication device includes a feed port comprising multiple input feeds, a precoding subsystem that is electrically connected to the feed port; and an antenna subsystem electrically connected to the precoding subsystem. The antenna subsystem is configured to transmit an output signal of the precoding subsystem to multiple wireless stations using multiple beams. The precoding subsystem is configured to perform a precoding operation on an input signal from the feed port, wherein the precoding operation maximizes a desired signal level to interference ratio of transmissions to the multiple wireless stations.

公开(公告)号：US11632791B2

公开(公告)日：2023-04-18

申请号：US17661539

申请日：2022-04-29

Applicant: Cohere Technologies, Inc.

Inventor： Yoav Hebron ,  Christian Ibars Casas ,  Ronny Hadani ,  Shachar Kons

IPC: H04L5/00 ,  H04W72/53 ,  H04W72/0446 ,  H04W72/0453

Abstract: Methods, systems and devices for providing transmission resources that achieve transmission diversity while reducing pilot signal overhead are described. An exemplary wireless communication method may be implemented in a wireless communication system in which transmission resources are allocated on a per physical resource block (PRB) basis, where a PRB corresponds to a two dimensional resource pattern comprising a first number of subcarriers along a frequency dimension and a second number time slots along a time dimension. The method includes logically dividing subcarriers in each PRB into an integer number of sub-groups of sub-carriers, wherein the integer number is greater than one, allocating, to a transmission, transmission resources corresponding to one or more of the sub-groups of subcarriers, performing the transmission in the wireless communication system.

公开(公告)号：US20220321181A1

公开(公告)日：2022-10-06

申请号：US17596233

申请日：2020-06-05

Applicant: Cohere Technologies, Inc.

Inventor： Ronny Hadani ,  Shachar Kons

IPC: H04B7/0456 ,  H04W52/14 ,  H04B7/024 ,  H04B7/0452

Abstract: Methods, systems and devices for reciprocal geometric precoding are described. One example method includes determining, by a network device, an uplink channel state using reference signal transmissions received from multiple user devices, and generating a precoded transmission waveform for transmission to one or more of the multiple user devices by applying a precoding scheme that is based on the uplink channel state, wherein the uplink channel state completely defines the precoding scheme. In some embodiments, the reference signal transmissions and the precoded transmission waveform are multiplexed using either time-domain multiplexing or frequency-domain multiplexing.

公开(公告)号：US20220263686A1

公开(公告)日：2022-08-18

申请号：US17662590

申请日：2022-05-09

Applicant: Cohere Technologies, Inc.

Inventor： Shachar Kons ,  Ronny Hadani ,  Paul Harris

IPC: H04L25/02 ,  H04B7/0413 ,  H04L5/00

Abstract: A wireless communication method includes receiving, by a first wireless device during a training phase, reference tones using a first number of resource elements from a transmitter of a second wireless device, wherein the first wireless device comprises multiple receiving antennas, estimating, by the first wireless device, from the receiving the reference tones, a second order statistics of wireless channels between the multiple receiving antennas and the transmitter of the second wireless device, and performing channel estimation, during an operational phase subsequent to the training phase, using the second order statistics and reference tones received on a second number of resource elements, wherein the second number is less than the first number.

公开(公告)号：US11310000B2

公开(公告)日：2022-04-19

申请号：US16336823

申请日：2017-09-29

Applicant: Cohere Technologies, Inc.

Inventor： Christian Ibars Casas ,  Shachar Kons ,  Ronny Hadani

IPC: H03M13/00 ,  H04L1/24 ,  H03M13/25 ,  H03M13/27 ,  H03M13/29

Abstract: A wireless communication method for transmitting wireless signals from a transmitter includes dividing bits of the transport block into a number of code blocks, wherein each code block corresponds to a bit-level of a multi-level modulation scheme used for transmission, and wherein a size of each code block is inversely proportional to a corresponding coding rate used for coding the code block.