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公开(公告)号：WO2018195548A1
公开(公告)日：2018-10-25
申请号：PCT/US2018/028926
申请日：2018-04-23
Applicant: COHERE TECHNOLOGIES
Inventor： MOLISCH, Andreas , HADANI, Ronny , FANFELLE, Robert
Abstract: Methods, devices and systems for communication techniques that use the quasi-static properties of wireless channels are described. One example method to improve communication performance includes receiving a set of pilots over a transmission channel between the wireless communication apparatus and a far-end communication apparatus, the transmission channel comprising a first portion that is time-invariant and a second portion that is time-variant, processing the received set of pilots to generate an estimate of the first portion, processing the received set of pilots to generate an estimate of the second portion, and performing a communication based on a channel state information that is a weighted combination of a first term based on the estimate of the first portion and a second term based on the estimate of the second portion.
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公开(公告)号：WO2017100666A1
公开(公告)日：2017-06-15
申请号：PCT/US2016/065961
申请日：2016-12-09
Applicant: COHERE TECHNOLOGIES
Inventor： HADANI, Ronny , RAKIB, Shlomo, Selim , MONK, Anton , TSATSANIS, Michail , HEBRON, Yoav
CPC classification number: H04L27/2697 , H04L5/0048 , H04L27/2613 , H04L27/2639
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.
Abstract translation: 无线通信方法包括：生成导频信号，该导频信号使用具有时间维度上的第一线性相位和频率维度上的第二线性相位的复指数信号来表示; 以及使用在诸如长期演进（LTE）网络之类的传统传输网络中指定用于导频信号传输的传输资源，通过无线通信信道传输导频信号。
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公开(公告)号：WO2018064587A1
公开(公告)日：2018-04-05
申请号：PCT/US2017/054517
申请日：2017-09-29
Applicant: COHERE TECHNOLOGIES
Inventor： IBARS CASAS, Christian , KONS, Shachar , HADANI, Ronny
CPC classification number: H03M13/251 , H03M13/09 , H03M13/255 , H03M13/256 , H03M13/258 , H03M13/27 , H03M13/29 , H03M13/6362 , H03M13/6516
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.
Abstract translation: 用于从发送器发送无线信号的无线通信方法包括将传输块的比特分成多个码块，其中每个码块对应于多级调制方案的比特级 用于传输，并且其中每个码块的大小与用于编码码块的对应编码率成反比。
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公开(公告)号：WO2018031952A1
公开(公告)日：2018-02-15
申请号：PCT/US2017/046634
申请日：2017-08-11
Applicant: COHERE TECHNOLOGIES
Inventor： KONS, Shachar , HADANI, Ronny , IBARS CASAS, Christian
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.
Abstract translation: 用于从发射机发射无线信号的无线通信方法包括接收用于发射的信息比特，将信息比特分段为段的流，将相应的前向纠错（FEC）码和交织器应用于 分段流中的每一个和组合交织的输出以产生符号流，处理符号流以产生波形，并且通过通信介质发送波形。
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5.发明申请ITERATIVE CHANNEL ESTIMATION AND EQUALIZATION WITH SUPERIMPOSED REFERENCE SIGNALS 审中-公开重叠参考信号的迭代信道估计和均衡
公开(公告)号：WO2017201467A1
公开(公告)日：2017-11-23
申请号：PCT/US2017/033632
申请日：2017-05-19
Applicant: COHERE TECHNOLOGIES
Inventor： KONS, Shachar , HADANI, Ronny , TSATSANIS, Michail
CPC classification number: H04L23/02 , H04L1/0047 , H04L5/0048 , H04L25/0204 , H04L25/0236 , H04L25/03012 , H04L25/03891 , H04L27/01 , H04L27/18 , H04L27/34 , H04L27/345 , H04L27/36
Abstract: 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.
Abstract translation: 在发射机装置中，已知的参考信号被叠加在数据信号之上，该数据信号通常在接收机之前是未知的，并且组合信号被发送。 在接收机处，使用迭代信道估计和均衡技术来恢复参考信号和未知数据信号。 在最初的迭代中，通过将数据信号视为噪声来恢复已知的参考信号。 后续的迭代被用于改善对接收到的参考信号和未知数据信号的估计。
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Patent Agency Ranking6.发明申请CHANNEL ACQUISITION USING ORTHOGONAL TIME FREQUENCY SPACE MODULATED PILOT SIGNAL 审中-公开使用正交时间空间调制的导频信号进行信道采集
公开(公告)号：WO2017173160A1
公开(公告)日：2017-10-05
申请号：PCT/US2017/025166
申请日：2017-03-30
Applicant: COHERE TECHNOLOGIES
Inventor： HEBRON, Yoav , RAKIB, Shlomo, Selim , HADANI, Ronny , TSATSANIS, Michail , AMBROSE, Clayton , DELFELD, Jim , FANFELLE, Robert
Abstract: Techniques for performing channel estimation in an orthogonal time, frequency and space (OTFS) communication system include receiving a wireless signal comprising a data signal portion and a pilot signal portion in which the pilot signal portion includes multiple pilot signals multiplexed together in the OTFS domain, performing two-dimensional channel estimation in a time-frequency domain based on a minimum mean square error (MMSE) optimization criterion, and recovering information bits using a channel estimate obtained from the two-dimensional channel estimation.
Abstract translation: 用于在正交时间，频率和空间（OTFS）通信系统中执行信道估计的技术包括接收包括数据信号部分和导频信号部分的无线信号，其中导频信号部分包括多个导频 在OTFS域中复用在一起的信号，基于最小均方误差（MMSE）优化准则在时间 - 频率域中执行二维信道估计，并且使用从二维信道估计获得的信道估计来恢复信息比特。
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7.发明申请ORTHOGONAL TIME FREQUENCY SPACE MODULATION OVER A PLURALITY OF NARROW BAND SUBCARRIERS 审中-公开正交时间频率空间调制在大量的窄带分支
公开(公告)号：WO2017011455A1
公开(公告)日：2017-01-19
申请号：PCT/US2016/041894
申请日：2016-07-12
Applicant: COHERE TECHNOLOGIES , SHLOMO, Selim Rakib , HADANI, Ronny
Inventor： SHLOMO, Selim Rakib , HADANI, Ronny
CPC classification number: H04J11/0026 , H04J11/00 , H04J2011/0003 , H04L23/02 , H04L27/2639 , H04L27/2697
Abstract: An Orthogonal Time Frequency Space Modulation (OTFS) modulation scheme that maps data symbols, along with optional pilot symbols, using a symplectic-like transformation such as a 2D Fourier transform and optional scrambling operation, into a complex wave aggregate and be backward compatible with legacy OFDM systems, is described. This wave aggregate may be processed for transmission by selecting portions of the aggregate according to various time and frequency intervals. The output from this process can be used to modulate transmitted waveforms according to various time intervals over a plurality of narrow-band subcarriers, often by using mutually orthogonal subcarrier "tones" or carrier frequencies. The entire wave aggregate may be transmitted over various time intervals. At the receiver, an inverse of this process can be used to both characterize the data channel and to correct the received signals for channel distortions, thus receiving a clear form of the original data symbols.
Abstract translation: 正交时空调制（OTFS）调制方案将数据符号连同可选的导频符号一起使用像二维傅立叶变换和可选加扰操作这样的类似像的变换一起复制到复数波聚合中，并与传统的向后兼容 OFDM系统。 可以通过根据各种时间和频率间隔选择聚合的部分来处理该波聚合。 该过程的输出可以用于经常通过使用相互正交的子载波“音调”或载波频率根据多个窄带子载波上的各种时间间隔调制发射的波形。 整个波聚合可以在不同的时间间隔内传输。 在接收机处，该过程的逆可以用于表征数据信道并且校正接收到的信道的信道失真，从而接收原始数据符号的清楚形式。
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公开(公告)号：WO2016209848A1
公开(公告)日：2016-12-29
申请号：PCT/US2016/038584
申请日：2016-06-21
Applicant: COHERE TECHNOLOGIES, INC.
Inventor： RAKIB, Shlomo Selim , HADANI, Ronny
IPC: H04L27/26
CPC classification number: H04L5/026 , H04L5/0021 , H04L25/03012 , H04L25/03159 , H04L25/03343 , H04L27/2627 , H04L27/2649
Abstract: 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 NxM 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.
Abstract translation: 一种用于正交时空间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阵列编码成调制符号的二维阵列。 然后使用M个频率子带内包含的M个相互正交的波形来发送调制符号的二维阵列。
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公开(公告)号：WO2016014598A1
公开(公告)日：2016-01-28
申请号：PCT/US2015/041420
申请日：2015-07-21
Applicant: COHERE TECHNOLOGIES, INC.
Inventor： HADANI, Ronny , RAKIB, Shlomo Selim
IPC: H03H7/30
CPC classification number: H04B7/10 , H04B7/0413 , H04L5/0048 , H04L25/0202 , H04L25/0204 , H04L25/0222 , H04L25/03159 , H04L27/2608 , H04L27/2613 , H04L27/2634 , H04L27/2639 , H04L27/2646 , H04L27/2649
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.
Abstract translation: 光纤，电缆和无线数据通道通常受到反射器和其他缺陷的损害，产生具有回波的通道状态和数据波形中的频率偏移。 这里，给出了使用OTFS导频符号波形突发自动产生信道状态的详细2D模型的方法。 然后可以使用该2D通道状态来优化数据传输。 对于无线数据信道，可以通过在该过程中使用极化和多个天线来产生更加详细的信道状态的2D模型。 一旦二维渠道状态已知，系统通过使用渠道缺陷来提高数据传输速率，将不完美的数据通道从责任转移到优势。 这些方法可以用于改进多种类型媒体中的传统数据传输模式，并且对于使用非传统OTFS数据传输方法产生新类型的鲁棒和大容量无线通信特别有用。
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10.发明申请
公开(公告)号：WO2016014596A1
公开(公告)日：2016-01-28
申请号：PCT/US2015/041417
申请日：2015-07-21
Applicant: COHERE TECHNOLOGIES, INC
Inventor： RAKIB, Shlomo Selim , HADANI, Ronny
IPC: H03H7/30
CPC classification number: H04B7/10 , H04B7/0413 , H04L5/0048 , H04L25/0202 , H04L25/0204 , H04L25/0222 , H04L25/03159 , H04L27/2608 , H04L27/2613 , H04L27/2634 , H04L27/2639 , H04L27/2646 , H04L27/2649
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 where other methods would likely degrade.
Abstract translation: 自动使用各种方法的组合的计算机化无线发射机/接收机系统，包括通过称重或调制一系列时移和频移波形突发，导频符号方法，错误检测方法，MIMO方法等方法来传输数据符号，以自动 确定数据通道的结构，并自动补偿由数据通道的各种结构方面引起的信号失真，以及通道结构的变化。 通常，数据信道是各种无线发射机，接收机和信号反射器正在移动的二维或三维空间。 本发明的调制方法检测各种反射器和其它通道损伤的位置和速度。 误差检测方案，调制方法的变化和MIMO技术进一步检测和补偿损伤。 本发明可以自动优化其操作参数，并且在其他方法可能劣化的环境中产生确定性的非衰落信号。
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