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    Modulation and equalization in an orthonormal time-frequency shifting communications system
    81.
    发明授权
    Modulation and equalization in an orthonormal time-frequency shifting communications system 有权
    正交时频移频通信系统中的调制和均衡

    公开(公告)号：US09590779B2

    公开(公告)日：2017-03-07

    申请号：US13927095

    申请日：2013-06-25

    Applicant: COHERE TECHNOLOGIES, INC.

    Inventor： Ronny Hadani ,  Salim Shlomo Rakib

    IPC: H04J4/00 ,  H04L5/00 ,  H04W24/02 ,  H04L27/26 ,  H04L23/02 ,  H04L25/03

    CPC classification number: H04L5/0044 ,  H04L5/0016 ,  H04L23/02 ,  H04L25/03834 ,  H04L27/2634 ,  H04L27/265 ,  H04L27/2655 ,  H04L27/2697 ,  H04W24/02

    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.

    Abstract translation: 一种提供在信号传输系统中可用的调制信号的系统和方法。 该方法包括可能将时间和频率两者将包括多个数据元素的数据帧变换成变换数据矩阵。 经变换的数据矩阵包括多个经变换的数据元素，其中多个经变换的数据元素中的每一个基于多个数据元素中的每一个。 该方法还包括根据变换后的数据矩阵的变换数据元素生成调制信号。

    INCONSPICUOUS MULTI-DIRECTIONAL ANTENNA SYSTEM CONFIGURED FOR MULTIPLE POLARIZATION MODES
    82.
    发明申请
    INCONSPICUOUS MULTI-DIRECTIONAL ANTENNA SYSTEM CONFIGURED FOR MULTIPLE POLARIZATION MODES 审中-公开
    配置多种极化模式的不合逻辑的多方向天线系统

    公开(公告)号：US20170040711A1

    公开(公告)日：2017-02-09

    申请号：US15203728

    申请日：2016-07-06

    Applicant: Cohere Technologies, Inc.

    Inventor： Shlomo Selim Rakib ,  Ronny Hadani

    IPC: H01Q21/24 ,  H01Q1/48 ,  H01Q1/24

    CPC classification number: H01Q1/246 ,  H01Q1/38 ,  H01Q9/0407 ,  H01Q13/085 ,  H01Q19/30 ,  H01Q21/065 ,  H01Q21/28 ,  H01Q25/001 ,  H01Q25/002

    Abstract: Inconspicuous antenna systems configured to include substantially transparent conducting and dielectric materials or open lattice structures. The antenna systems are capable of distinguishing wireless waveforms over a plurality of different polarization states and directions. Polarized antenna elements are assembled into antenna sets, each set with a different directionality. The different directionality sets in turn form the antenna system. Directionality can be achieved by employing different printed antenna like designs, variable length microstrips, Rotman lenses, active phase adjust, metamaterials, and other methods. The antenna system can be widely used in urban environments and installed as visually inconspicuous retrofits over building windows, street lights, air conditioning units, and the like.

    Abstract translation: 不重要的天线系统被配置为包括基本上透明的导电和介电材料或开放的格子结构。 天线系统能够区分多个不同极化状态和方向上的无线波形。 极化天线元件组装成天线组，每组天线组具有不同的方向性。 不同的方向依次形成天线系统。 方向性可以通过采用不同印刷天线的设计，可变长度微带，Rotman透镜，有源相位调整，超材料等方法来实现。 天线系统可广泛应用于城市环境，并且在建筑物窗户，路灯，空调机组等上视觉上不可见地进行改造。

    Distributed cooperative operation of wireless cells based on sparse channel representations
    87.
    发明授权
    Distributed cooperative operation of wireless cells based on sparse channel representations 有权

    公开(公告)号：US11974167B2

    公开(公告)日：2024-04-30

    申请号：US17309950

    申请日：2019-12-31

    Applicant: Cohere Technologies, Inc.

    Inventor： Shachar Kons ,  Shlomo Selim Rakib ,  Ronny Hadani

    IPC: H04W28/16 ,  H04W16/24 ,  H04W72/044 ,  H04W72/542

    CPC classification number: H04W28/16 ,  H04W16/24 ,  H04W72/044 ,  H04W72/542

    Abstract: Methods, systems and devices for distributed cooperative operation of wireless cells based on sparse channel representations are described. One example method includes providing, using a server, seamless wireless connectivity in an area in which a plurality of network nodes are organized as clusters, where each network node is configured to provide wireless connectivity via N angular sectors covering a surrounding area, where N is an integer and wherein angular sectors of the plurality of network nodes collectively cover the area; controlling, by the server, network nodes in a cluster to collect channel condition information for the N angular sectors and communicate the channel condition information to the network-side server, and operating the server to use the channel condition information collected from the network nodes in the cluster to control communication for the network nodes in the cluster at a different time or a different frequency or a different spatial direction.

    Orthogonal time frequency space modulation techniques
    89.
    发明授权
    Orthogonal time frequency space modulation techniques 有权

    公开(公告)号：US11575557B2

    公开(公告)日：2023-02-07

    申请号：US17304059

    申请日：2021-06-14

    Applicant: Cohere Technologies, Inc.

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

    IPC: H04L27/32

    Abstract: Orthogonal Time Frequency Space (OTFS) is a novel modulation scheme with significant benefits for 5G systems. The fundamental theory behind OTFS is presented in this paper as well as its benefits. We start with a mathematical description of the doubly fading delay-Doppler channel and develop a modulation that is tailored to this channel. We model the time varying delay-Doppler channel in the time-frequency domain and derive a new domain (the OTFS domain) where we show that the channel is transformed to a time invariant one and all symbols see the same SNR. We explore aspects of the modulation like delay and Doppler resolution, and address design and implementation issues like multiplexing multiple users and evaluating complexity. Finally we present some performance results where we demonstrate the superiority of OTFS.

    Methods of operating and implementing wireless communications systems
    90.
    发明授权
    Methods of operating and implementing wireless communications systems 有权

    公开(公告)号：US11470485B2

    公开(公告)日：2022-10-11

    申请号：US16882315

    申请日：2020-05-22

    Applicant: Cohere Technologies, Inc.

    Inventor： Shlomo Selim Rakib ,  Ronny Hadani

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

    Abstract: Computerized wireless transmitter/receiver system that automatically uses combinations of various methods, including transmitting data symbols by weighing or modulating a family of time shifted and frequency shifted waveforms bursts, pilot symbol methods, error detection methods, MIMO methods, and other methods, to automatically determine the structure of a data channel, and automatically compensate for signal distortions caused by various structural aspects of the data channel, as well as changes in channel structure. Often the data channel is a two or three dimensional space in which various wireless transmitters, receivers and signal reflectors are moving. The invention's modulation methods detect locations and speeds of various reflectors and other channel impairments. Error detection schemes, variation of modulation methods, and MIMO techniques further detect and compensate for impairments. The invention can automatically optimize its operational parameters, and produce a deterministic non-fading signal in environments in which other methods would likely degrade.

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