专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US10034184B2 OTFS method of data channel characterization and uses thereof 有权
公开(公告)号：US10034184B2
公开(公告)日：2018-07-24
申请号：US15604072
申请日：2017-05-24
申请人： Cohere Technologies, Inc.
发明人： Ronny Hadani , Shlomo Selim Rakib
IPC分类号： H04W24/02 , H04L25/02 , H04L5/00 , H04L27/26 , H04W72/08 , H04B7/10
摘要： 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.

2. 发明申请

US20170244524A1 VARIABLE LATENCY DATA COMMUNICATION USING ORTHOGONAL TIME FREQUENCY SPACE MODULATION 审中-公开
公开(公告)号：US20170244524A1
公开(公告)日：2017-08-24
申请号：US15374989
申请日：2016-12-09
申请人： COHERE TECHNOLOGIES, INC.
发明人： Ronny Hadani , Shlomo Selim Rakib
IPC分类号： H04L5/00 , H04B1/02 , H04L27/26
CPC分类号： H04L5/0007 , H04B1/02 , H04B1/12 , H04B7/0413 , H04B7/0456 , H04J11/0026 , H04J2011/0016 , H04L5/0005 , H04L5/0016 , H04L5/0023 , H04L5/0048 , H04L23/02 , H04L25/03834 , H04L27/26 , H04L27/2634 , H04L27/2636 , H04L27/2639 , H04L27/265 , H04L27/2655 , H04L27/2697 , H04W4/70
摘要： A system and method of variable latency data transmission. The method includes transforming a first original data frame in accordance with a first time-frequency transformation so as to provide a first transformed data frame wherein the first time-frequency transformation is associated with a first latency. The method further includes transforming a second original data frame in accordance with a second time-frequency transformation so as to provide a second transformed data frame wherein the second time-frequency transformation is associated with a second latency. Using a transmitter, elements of the first transformed data frame are transmitted over a first frame period corresponding to the first latency and elements of the second transformed data frame are transmitted over a second frame period corresponding to the second latency wherein the first frame period is different from the second frame period.

3. 发明申请

US20170012749A1 ORTHOGONAL TIME FREQUENCY SPACE COMMUNICATION SYSTEM COMPATIBLE WITH OFDM 审中-公开
标题翻译：正交时间空间通信系统与OFDM兼容
公开(公告)号：US20170012749A1
公开(公告)日：2017-01-12
申请号：US15208545
申请日：2016-07-12
申请人： Cohere Technologies, Inc.
发明人： Shlomo Selim Rakib , Ronny Hadani
IPC分类号： H04L5/00 , H04L27/26
CPC分类号： H04L5/0007 , H04L27/2639 , H04L27/2697
摘要： A system and method for orthogonal time frequency space communication and waveform generation compatible with OFDM. The method includes receiving a plurality of information symbols and encoding an N×M array containing the plurality of information symbols into a two-dimensional array of modulation symbols by spreading each of the plurality of information symbols with respect to both time and frequency. The two-dimensional array of modulation symbols is then transmitted along with one or more OFDM symbols using a plurality of narrowband subcarriers.
摘要翻译：一种与OFDM正交的时空通信和波形生成的系统和方法。该方法包括通过相对于时间和频率扩展多个信息符号中的每一个来接收多个信息符号并将包含多个信息符号的N×M阵列编码为调制符号的二维阵列。然后使用多个窄带子载波与一个或多个OFDM符号一起发送调制符号的二维阵列。

4. 发明授权

US09083483B1 Orthonormal time-frequency shifting and spectral shaping communications method 有权
标题翻译：正交时频移频和频谱整形通信方法
公开(公告)号：US09083483B1
公开(公告)日：2015-07-14
申请号：US14341820
申请日：2014-07-27
申请人： Cohere Technologies, Inc.
发明人： Shlomo Selim Rakib , Ronny Hadani
IPC分类号： H04J11/00 , H04L23/02
CPC分类号： H04J11/0063 , H04L5/0016 , H04L5/0044 , H04L23/02 , H04L25/03834 , H04L27/2634 , H04L27/265 , H04L27/2655 , H04L27/2697 , H04W28/065 , H04W72/00
摘要： A wireless combination time, frequency and spectral shaping communications method that transmits data in convolution unit matrices (data frames) of N×N (N2), where generally either all N2 data symbols are received over N spreading time intervals (each composed of N time slices), or none are. To transmit, the N2 sized data frame matrix is multiplied by a first N×N time-frequency shifting matrix, permuted, and then multiplied by a second N×N spectral shaping matrix, thereby mixing each data symbol across the entire resulting N×N matrix (TFSSS data matrix). Columns from this N2 TFSSS data matrix are selected, modulated, and transmitted, on a one element per time slice basis. At the receiver, the replica TFSSS matrix is reconstructed and deconvoluted, revealing the data. The method can accommodate multiple users at once, can adapt to changing channel conditions, and is particularly useful for coping with channel impairments such as Doppler shifts.
摘要翻译：一种在N×N（N2）的卷积单位矩阵（数据帧）中传送数据的无线组合时间，频率和频谱整形通信方法，其中通常在N个扩展时间间隔（每个由N个时间间隔组成）接收所有N2个数据符号切片），或没有。为了发送，将N2大小的数据帧矩阵乘以第一N×N个时频移位矩阵，置换，然后乘以第二N×N频谱整形矩阵，从而将整个结果N×N 矩阵（TFSSS数据矩阵）。来自该N2 TFSSS数据矩阵的列在每个时间片的基础上被选择，调制和传输。在接收机处，复制TFSSS矩阵被重构和去卷积，揭示了数据。该方法可以同时容纳多个用户，可以适应不断变化的信道条件，并且对于应对诸如多普勒频移的信道损伤特别有用。

5. 发明授权

US11558157B2 Fixed wireless access using orthogonal time frequency space modulation 有权
公开(公告)号：US11558157B2
公开(公告)日：2023-01-17
申请号：US17303436
申请日：2021-05-28
申请人： Cohere Technologies, Inc.
发明人： Shlomo Selim Rakib , Ronny Hadani , Richard Benner , Robert Fanfelle
IPC分类号： H04L5/00 , H01Q21/24 , H04B7/06 , H04B7/12
摘要： A fixed wireless access system is implemented using orthogonal time frequency space multiplexing (OTFS). Data transmissions to/from different devices share transmission resources using—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.

6. 发明授权

US11362872B2 Receiver-side processing of orthogonal time frequency space modulated signals 有权
公开(公告)号：US11362872B2
公开(公告)日：2022-06-14
申请号：US16946375
申请日：2020-06-18
申请人： Cohere Technologies, Inc.
发明人： Ronny Hadani , Shlomo Selim Rakib , Anthony Ekpenyong , Clayton Ambrose , Shachar Kons
IPC分类号： H04L27/26 , H04L5/00 , H04L1/00 , H04B7/0413
摘要： 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.

7. 发明申请

US20220086694A1 DISTRIBUTED COOPERATIVE OPERATION OF WIRELESS CELLS BASED ON SPARSE CHANNEL REPRESENTATIONS 有权
公开(公告)号：US20220086694A1
公开(公告)日：2022-03-17
申请号：US17309950
申请日：2019-12-31
申请人： Cohere Technologies, Inc.
发明人： Shachar Kons , Shlomo Selim Rakib , Ronny Hadani
IPC分类号： H04W28/16 , H04W72/04 , H04W72/08 , H04W16/24
摘要： 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.

8. 发明申请

US20220085928A1 IMPLEMENTATION OF ORTHOGONAL TIME FREQUENCY SPACE MODULATION FOR WIRELESS COMMUNICATIONS 有权
公开(公告)号：US20220085928A1
公开(公告)日：2022-03-17
申请号：US17456024
申请日：2021-11-22
申请人： Cohere Technologies, Inc.
发明人： Seshadri Sathyanarayan , Shlomo Selim Rakib
IPC分类号： H04L5/00 , H04B1/3827 , H04L27/00 , H04L27/20 , H04L27/26
摘要： Device, methods and systems for implementing aspects of orthogonal time frequency space (OTFS) modulation in wireless systems are described. In an aspect, the device may include a surface of an object for receiving an electromagnetic signal. The surface may be structured to perform a non-electrical function for the object. The surface may generate an electrical signal from an electromagnetic signal. The electromagnetic signal may be received from a transmitter. The transmitter may map digital data to a digital amplitude modulation constellation in a time-frequency space. The digital amplitude modulation constellation may be mapped to a delay-Doppler domain and the transmitter may transmit to the surface according to an orthogonal time frequency space modulation signal scheme. The apparatus may further include a demodulator to demodulate the electrical signal to determine digital data.

9. 发明申请

US20210351880A1 MULTIPLE ACCESS USING ORTHOGONAL TIME FREQUENCY SPACE MODULATION 有权
公开(公告)号：US20210351880A1
公开(公告)日：2021-11-11
申请号：US17443004
申请日：2021-07-19
申请人： Cohere Technologies, Inc.
发明人： Ronny Hadani , Anton Monk , Shlomo Selim Rakib , Michail Tsatsanis
IPC分类号： H04L5/00 , H04L27/26 , H04L1/00
摘要： An Orthogonal Time Frequency Space Modulation (OTFS) modulation scheme achieving multiple access by multiplexing multiple signals at the transmitter-side performs allocation of transmission resources to a first signal and a second signal, combining and converting to a transmission format via OTFS modulation and transmitting the signal over a communication channel. At the receiver, multiplexed signals are recovered using orthogonality property of the basis functions used for the multiplexing at the transmitter.

10. 发明授权

US10404514B2 Orthogonal time frequency space communication system compatible with OFDM 有权
公开(公告)号：US10404514B2
公开(公告)日：2019-09-03
申请号：US15740316
申请日：2016-06-27
申请人： Cohere Technologies, Inc.
发明人： Shlomo Selim Rakib , Ronny Hadani
IPC分类号： H04L27/26 , H04L1/06 , G06F17/14 , H04L5/00
摘要： A system and method for orthogonal time frequency space communication and waveform generation. The method includes receiving a plurality of information symbols and encoding an N×M array containing the plurality of information symbols into a two-dimensional array of modulation symbols by spreading each of the plurality of information symbols with respect to both time and frequency. The two-dimensional array of modulation symbols is then transmitted using M mutually orthogonal waveforms included within M frequency sub-bands.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式