-
公开(公告)号：US20230138923A1
公开(公告)日：2023-05-04
申请号：US17938627
申请日：2022-10-06
发明人： Shlomo Selim RAKIB , Ronny HADANI
摘要： 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.
-
2.发明申请公开(公告)号：US20210314111A1
公开(公告)日：2021-10-07
申请号：US17304053
申请日：2021-06-14
发明人： Ronny HADANI , Shlomo Selim RAKIB
摘要： 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：US20180227159A1
公开(公告)日：2018-08-09
申请号：US15740316
申请日：2016-06-27
发明人： Shlomo Selim RAKIB , Ronny HADANI
CPC分类号： H04L27/2639 , G06F17/147 , H04L1/06 , H04L5/0023 , H04L27/26 , H04L27/2646
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.
-
公开(公告)号：US20200322185A1
公开(公告)日：2020-10-08
申请号：US16303590
申请日：2017-05-19
发明人： Shachar KONS , Ronny HADANI , Michail TSATSANIS
摘要： In a transmitter apparatus, a known reference signal is superimposed on top of a data signal that is typically not known a priori to a receiver and the combined signal is transmitted. At a receiver, an iterative channel estimation and equalization technique is used to recover the reference signal and the unknown data signal. In the initial iteration, the known reference signal is recovered by treating the data signal as noise. Subsequent iterations are used to improve estimation of received reference signal and the unknown data signal.
-
公开(公告)号：US20200305010A1
公开(公告)日：2020-09-24
申请号：US16946119
申请日：2020-06-05
发明人： Ronny HADANI , Shlomo Selim RAKIB
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 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 data transmission methods as well.
-
公开(公告)号：US20240267276A1
公开(公告)日：2024-08-08
申请号：US18686659
申请日：2022-08-26
发明人： Shachar KONS , Shlomo Selim Rakib , Ronny HADANI
IPC分类号： H04L27/26
CPC分类号： H04L27/2639 , H04L27/261
摘要： Methods, systems and devices for wireless communication are described. One example method includes performing a first mapping in which information bits are mapped to transmission resources in a first portion of a two-dimensional delay-Doppler grid. Herein, the two-dimensional delay-Doppler grid comprises N Doppler elements and M delay elements, where N and M are positive integers. The method further includes performing a second mapping in which a reference signal is mapped to transmission resources in a second portion of the two-dimensional delay-Doppler grid, and generating a transmission waveform from a signal combination of an output of the first mapping and an output of the second mapping. The transmission waveform corresponds to an output of an orthogonal time frequency space (OTFS) waveform of the signal combination, and at least the output of the second mapping undergoes a time domain spreading.
-
公开(公告)号：US20240250859A1
公开(公告)日：2024-07-25
申请号：US18615169
申请日：2024-03-25
发明人： Ronny HADANI , Shlomo Selim RAKIB
CPC分类号： H04L27/2639 , H04B7/005 , H04L5/0005 , H04L5/0044 , H04L27/01 , H04L27/10 , H04L27/26532 , H04L27/2655 , H04L27/2697 , H04L5/0016 , H04L23/02 , H04L25/03834
摘要： 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：US20240015725A1
公开(公告)日：2024-01-11
申请号：US18004168
申请日：2021-06-15
发明人： Shlomo Selim RAKIB , Ronny HADANI , Shachar KONS
IPC分类号： H04W72/121 , H04W72/542 , H04L5/14 , H04B7/0456
CPC分类号： H04W72/121 , H04W72/542 , H04L5/14 , H04B7/0456
摘要： 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 wireless communication system includes a network station, and multiple user devices, wherein data transmissions over the same time and frequency resources are shared between multiple user devices, in downlink and/or uplink, using spatial user device separation that is dynamically computed by the network station, and where the network station derives spatial user device separation based on uplink channel measurements.
-
公开(公告)号：US20230412219A1
公开(公告)日：2023-12-21
申请号：US18456730
申请日：2023-08-28
发明人： Ronny HADANI , Shachar KONS
IPC分类号： H04B7/0456 , H04B7/024 , H04B7/0452 , H04W52/14
CPC分类号： H04B7/0456 , H04B7/024 , H04B7/0452 , H04W52/143
摘要： 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：US20220352933A1
公开(公告)日：2022-11-03
申请号：US17754206
申请日：2020-09-28
发明人： Shlomo Selim RAKIB , Ronny HADANI , Shachar KONS
IPC分类号： H04B7/0456 , H04B7/0408 , H04L5/00 , H04L5/14
摘要： 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.
-
-
-
-
-
-
-
-
-
搜索结果
24 条记录 (耗时 0.02 秒)
