公开(公告)号：US10567125B2

公开(公告)日：2020-02-18

申请号：US16044425

申请日：2018-07-24

Applicant: Cohere Technologies, Inc.

Inventor： Ronny Hadani ,  Shlomo Selim Rakib

IPC: H04L5/00 ,  H04B7/005 ,  H04L27/01 ,  H04L27/26 ,  H04L27/10 ,  H04L23/02 ,  H04L25/03

Abstract: A method for modulating data for transmission within a communication system. The method includes establishing a time-frequency shifting matrix of dimension N×N, wherein N is greater than one. The method further includes combining the time-frequency shifting matrix with a data frame to provide an intermediate data frame. A transformed data matrix is provided by permuting elements of the intermediate data frame. A modulated signal is generated in accordance with elements of the transformed data matrix.

公开(公告)号：US20190342136A1

公开(公告)日：2019-11-07

申请号：US15779796

申请日：2016-12-09

Applicant: Cohere Technologies

Inventor： Ronny Hadani ,  Shlomo Selim Rakib ,  Anton Monk ,  Michail Tsatsanis ,  Yoav Hebron

IPC: H04L27/26 ,  H04L5/00 ,  H04B7/01

Abstract: A wireless communication method includes generating a pilot signal that is represented using a complex exponential signal having a first linear phase in a time dimension and a second linear phase in a frequency dimension; and transmitting the pilot signal over a wireless communication channel using transmission resources that are designated for pilot signal transmission in a legacy transmission network such as a Long Term Evolution (LTE) network.

公开(公告)号：US10469215B2

公开(公告)日：2019-11-05

申请号：US15143323

申请日：2016-04-29

Applicant: Cohere Technologies, Inc.

Inventor： Selim Shlomo Rakib ,  Ronny Hadani

IPC: H04L5/00 ,  H04L29/08 ,  H04L27/26 ,  H04B1/707 ,  H04L23/02 ,  H04L25/03 ,  H04W72/00 ,  H04J11/00

Abstract: A system and method of operating an Internet of Things (IOT) device and an IOT manager device. The method includes determining, during operation of the IOT device in a low power mode, an orthogonal time frequency space (OTFS) transmission waveform using two-dimensional (2D) channel state information relevant to a delay-Doppler channel domain. The method further includes transmitting, during operation of the IOT device in a high power mode, the OTFS transmission waveform. The process of determining the OTFS transmission waveform may include, for example, receiving, from the IOT manager device, the 2D channel state information and storing it within a memory of the IOT device. Alternatively, at least one OTFS pilot transmission may be received from the IOT manager device and the 2D channel state information determined using the OTFS pilot transmission.

公开(公告)号：US10063354B2

公开(公告)日：2018-08-28

申请号：US15407941

申请日：2017-01-17

Applicant: COHERE TECHNOLOGIES, INC.

Inventor： Ronny Hadani ,  Selim Shlomo Rakib

IPC: H04L27/01 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04L5/0005 ,  H04B7/005 ,  H04L5/0016 ,  H04L5/0044 ,  H04L23/02 ,  H04L25/03834 ,  H04L27/01 ,  H04L27/10 ,  H04L27/2634 ,  H04L27/2649 ,  H04L27/265 ,  H04L27/2655 ,  H04L27/2697

Abstract: A method for modulating data for transmission within a communication system. The method includes establishing a time-frequency shifting matrix of dimension N×N, wherein N is greater than one. The method further includes combining the time-frequency shifting matrix with a data frame to provide an intermediate data frame. A transformed data matrix is provided by permuting elements of the intermediate data frame. A modulated signal is generated in accordance with elements of the transformed data matrix.

公开(公告)号：US20170346665A1

公开(公告)日：2017-11-30

申请号：US15617962

申请日：2017-06-08

Applicant: Cohere Technologies, Inc.

Inventor： Ronny Hadani ,  Shlomo Selim Rakib

IPC: H04L27/01 ,  H04L27/26 ,  H04L5/00 ,  H04B7/005 ,  H04B1/10 ,  H04L25/03 ,  H04L23/02

CPC classification number: H04L27/01 ,  H04B1/1027 ,  H04B7/005 ,  H04L5/0016 ,  H04L5/0044 ,  H04L23/02 ,  H04L25/03834 ,  H04L27/2634 ,  H04L27/265 ,  H04L27/2655 ,  H04L27/2697

Abstract: A method of receiving data including receiving, on one or more carrier waveforms, signals representing a plurality of data elements of an original data frame wherein each of the data elements are represented by cyclically time shifted and cyclically frequency shifted versions of a known set of waveforms. The method further includes generating, based upon the signals, a received data frame and generating an equalized data frame by performing an equalization operation using elements of the received data frame, the equalization operation correcting for distortion introduced into the signals during propagation of the carrier waveforms through a channel.

公开(公告)号：US20170324601A1

公开(公告)日：2017-11-09

申请号：US15601959

申请日：2017-05-22

Applicant: COHERE TECHNOLOGIES, INC.

Inventor： Ronny Hadani ,  Shlomo Selim Rakib

IPC: H04L27/26 ,  H04L5/00 ,  H04L27/01 ,  H04B7/06 ,  H04B7/005 ,  H04L25/03 ,  H04L23/02

CPC classification number: H04L27/2627 ,  H04B7/005 ,  H04B7/0619 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0044 ,  H04L23/02 ,  H04L25/03834 ,  H04L27/01 ,  H04L27/2634 ,  H04L27/265 ,  H04L27/2655 ,  H04L27/2697

Abstract: A system and method of providing a modulated signal useable in a signal transmission system. The method includes transforming, perhaps with respect to both time and frequency, a data frame including a plurality of data elements into a transformed data matrix. The transformed data matrix includes a plurality of transformed data elements where each of the plurality of transformed data elements is based upon each of the plurality of data elements. The method further includes generating the modulated signal in accordance with the transformed data elements of the transformed data matrix.

公开(公告)号：US20170303146A1

公开(公告)日：2017-10-19

申请号：US15604072

申请日：2017-05-24

Applicant: Cohere Technologies, Inc.

Inventor： Ronny Hadani ,  Shlomo Selim Rakib

IPC: H04W24/02 ,  H04L27/26 ,  H04L25/02 ,  H04L5/00 ,  H04W72/08 ,  H04B7/10

CPC classification number: H04W24/02 ,  H04B7/10 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/022 ,  H04L25/0224 ,  H04L27/2613 ,  H04L27/2639 ,  H04W72/08

Abstract: Fiber, cable, and wireless data channels are typically impaired by reflectors and other imperfections, producing a channel state with echoes and frequency shifts in data waveforms. Here, methods of using OTFS pilot symbol waveform bursts to automatically produce a detailed 2D model of the channel state are presented. This 2D channel state can then be used to optimize data transmission. For wireless data channels, an even more detailed 2D model of channel state can be produced by using polarization and multiple antennas in the process. Once 2D channel states are known, the system turns imperfect data channels from a liability to an advantage by using channel imperfections to boost data transmission rates. The methods can be used to improve legacy data transmission modes in multiple types of media, and are particularly useful for producing new types of robust and high capacity wireless communications using non-legacy OTFS data transmission methods.

公开(公告)号：US09729281B2

公开(公告)日：2017-08-08

申请号：US14709377

申请日：2015-05-11

Applicant: COHERE TECHNOLOGIES, INC.

Inventor： Ronny Hadani ,  Selim Shlomo Rakib

IPC: H04L5/00 ,  H04L27/26 ,  H04B1/707 ,  H04L23/02 ,  H04L25/03 ,  H04W28/04 ,  H04W28/06 ,  H04W72/00

CPC classification number: H04L5/0005 ,  H04B1/707 ,  H04L5/0016 ,  H04L5/0044 ,  H04L23/02 ,  H04L25/03834 ,  H04L27/2634 ,  H04L27/2636 ,  H04L27/265 ,  H04L27/2655 ,  H04L27/2697 ,  H04W28/04 ,  H04W28/065 ,  H04W72/00

Abstract: A method for modulating data for transmission within a communication system. The method includes establishing a time-frequency shifting matrix of dimension N×N, wherein N is greater than one. The method further includes combining the time-frequency shifting matrix with a data frame to provide an intermediate data frame. A transformed data matrix is provided by permuting elements of the intermediate data frame. A modulated signal is generated in accordance with elements of the transformed data matrix.

公开(公告)号：US20170207817A1

公开(公告)日：2017-07-20

申请号：US14605957

申请日：2015-09-14

Applicant: Cohere Technologies, Inc.

Inventor： Ronny Hadani ,  Selim Shlomo Rakib

IPC: H04B3/23 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04B3/237 ,  H04L5/0016 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/14 ,  H04L23/02 ,  H04L25/03834 ,  H04L27/2634 ,  H04L27/2636 ,  H04L27/265 ,  H04L27/2655 ,  H04L27/2657 ,  H04L27/2697

Abstract: A method which includes receiving a first modulated signal from a first user device, the first modulated signal being generated based upon a time-frequency transformation of first user data. The method further includes receiving a second modulated signal from a second user device, the second modulated signal being generated based upon a time-frequency transformation of second user data. The first modulated signal and the second modulated signal are then processed.

公开(公告)号：US09668148B2

公开(公告)日：2017-05-30

申请号：US14805407

申请日：2015-07-21

Applicant: Cohere Technologies, Inc.

Inventor： Ronny Hadani ,  Shlomo Selim Rakib

IPC: H04B1/692 ,  H04W24/02 ,  H04L5/00 ,  H04W72/08 ,  H04L27/26 ,  H04B7/10

CPC classification number: H04W24/02 ,  H04B7/10 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/022 ,  H04L25/0224 ,  H04L27/2613 ,  H04L27/2639 ,  H04W72/08

Abstract: Fiber, cable, and wireless data channels are typically impaired by reflectors and other imperfections, producing a channel state with echoes and frequency shifts in data waveforms. Here, methods of using OTFS pilot symbol waveform bursts to automatically produce a detailed 2D model of the channel state are presented. This 2D channel state can then be used to optimize data transmission. For wireless data channels, an even more detailed 2D model of channel state can be produced by using polarization and multiple antennas in the process. Once 2D channel states are known, the system turns imperfect data channels from a liability to an advantage by using channel imperfections to boost data transmission rates. The methods can be used to improve legacy data transmission modes in multiple types of media, and are particularly useful for producing new types of robust and high capacity wireless communications using non-legacy OTFS data transmission methods.