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1. 发明授权

US11606239B2 Non-coherent waveforms for wireless communication 有权
公开(公告)号：US11606239B2
公开(公告)日：2023-03-14
申请号：US17071576
申请日：2020-10-15
申请人： QUALCOMM Incorporated
发明人： Shay Landis , Assaf Touboul , Amit Bar-Or Tillinger , Gideon Shlomo Kutz , Michael Levitsky , Guy Wolf
IPC分类号： H04B7/0456 , H04L27/26 , H04L27/20 , H04L27/04 , H04L5/00 , H04W72/0446 , H04B7/06 , H04L1/00 , H04L27/233 , H03M7/30 , H04J13/00
摘要： In one aspect, performing, by a wireless communication device, a non-coherent encoding operation on first data to generate a first transmission, wherein the non-coherent encoding operation encodes data independent of channel state information (CSI); and transmitting, by the wireless communication device, the first transmission, wherein the first transmission is non-coherently encoded. In another aspect, receiving, by a wireless communication device, a first transmission, wherein the first transmission is non-coherently encoded independent of channel state information (CSI); and performing, by the wireless communication device, a non-coherent decoding operation on the first transmission to decode the first transmission. Other aspects and features are also claimed and described.

2. 发明申请

US20230072942A1 MATCHED FILTER BANK 有权
公开(公告)号：US20230072942A1
公开(公告)日：2023-03-09
申请号：US17988602
申请日：2022-11-16
申请人： Nordic Semiconductor ASA
发明人： Daniel RYAN , Wei LI
IPC分类号： H04L27/233 , H03H17/02 , H04L27/26
摘要： A radio receiver comprises a matched filter bank and a decision unit. The matched filter bank has a plurality of filter modules for generating correlation-strength data from a sampled radio signal, each filter module being configured to cross-correlate the sampled signal with data representing a respective filter sequence. The decision unit is configured to use the correlation-strength data to generate a sequence of decoded symbols from the sampled signal. The matched filter bank and/or decision unit are configured to determine the value of each symbol in the sequence in part based on the value of a respective earlier decoded symbol from the sequence of decoded symbols.

3. 发明申请

US20220417067A1 Phase Modulated Data Link for Low-Swing Wireline Applications 有权
公开(公告)号：US20220417067A1
公开(公告)日：2022-12-29
申请号：US17852922
申请日：2022-06-29
申请人： Rambus Inc.
发明人： Masum Hossain , Richelle L. Smith , Carl W. Werner
IPC分类号： H04L27/233 , H04L27/34 , H04L27/20
摘要： A communication system comprises a transmitter and a receiver that communicate differential phase modulated data over a wireline channel pair. The transmitter encodes data symbols by generating first and second data signals with differentially phase shifted signal transitions with respect to one another. The receiver receives the first data signal and the second data signal and samples the first data signal based on a signal transition timing of the second data signal to generate a first output data symbol. The receiver furthermore samples the second data signal based on signal transition timing of the first data signal to generate a second output data symbol.

4. 发明授权

US11516055B2 Error retro-propagation for a chain for the blind demodulation of a digital telecommunication signal 有权
公开(公告)号：US11516055B2
公开(公告)日：2022-11-29
申请号：US16957562
申请日：2018-12-21
申请人： Avantix
发明人： Thomas Courtat
IPC分类号： H04L27/233 , G06N3/04 , G06N3/063 , G06N3/08 , H04L25/03 , H04L27/00 , H04L27/38
摘要： The present invention concerns a real-time method for the blind demodulation of digital telecommunication signals, based on the observation of a sampled version of this signal. The method comprises the following steps: —acquisition, by a sampling, of a first plurality of signals in order to each constitute an input of a network of L processing blocks (G, F, H), also referred to here as “specialized neurons”, each neuron being simulated by the outputs of the preceding block, the first plurality of signals being input into the first block simulating a first neuron of the network in order to generate a plurality of outputs of the first block; each neuron F being simulated by the outputs of an upstream chain G and stimulating a downstream chain H; each set of samples passes through the same processing chain; —the outputs of the last blocks of the network ideally correspond to the demodulated symbols; —addition of a nonlinearity to each of the outputs of the last block of the network making it possible to calculate an error signal and propagation of this error in the reverse direction of the processing chain (“retropropagation”); —estimation, upon receipt of the error by each neuron (i), of a corrective term δθi and updating, in each block, of the value of the parameter θi according to θi+=δθi.

5. 发明授权

US11424975B2 Non-coherent waveforms for wireless communication 有权
公开(公告)号：US11424975B2
公开(公告)日：2022-08-23
申请号：US17071592
申请日：2020-10-15
申请人： QUALCOMM Incorporated
发明人： Shay Landis , Assaf Touboul , Amit Bar-Or Tillinger , Gideon Shlomo Kutz , Michael Levitsky , Guy Wolf
IPC分类号： H04J13/00 , H04L27/26 , H04L27/20 , H04L27/04 , H04L5/00 , H04W72/04 , H04B7/06 , H04L1/00 , H04L27/233 , H04B7/0456 , H03M7/30
摘要： In one aspect, performing, by a wireless communication device, a non-coherent encoding operation on first data to generate a first transmission, wherein the non-coherent encoding operation encodes data independent of channel state information (CSI); and transmitting, by the wireless communication device, the first transmission, wherein the first transmission is non-coherently encoded. In another aspect, receiving, by a wireless communication device, a first transmission, wherein the first transmission is non-coherently encoded independent of channel state information (CSI); and performing, by the wireless communication device, a non-coherent decoding operation on the first transmission to decode the first transmission. Other aspects and features are also claimed and described.

6. 发明申请

US20220014404A1 Phase Modulated Data Link for Low-Swing Wireline Applications 有权
公开(公告)号：US20220014404A1
公开(公告)日：2022-01-13
申请号：US17363557
申请日：2021-06-30
申请人： Rambus Inc.
发明人： Masum Hossain , Richelle L. Smith , Carl W. Werner
IPC分类号： H04L27/233 , H04L27/34 , H04L27/20
摘要： A communication system comprises a transmitter and a receiver that communicate differential phase modulated data over a wireline channel pair. The transmitter encodes data symbols by generating first and second data signals with differentially phase shifted signal transitions with respect to one another. The receiver receives the first data signal and the second data signal and samples the first data signal based on a signal transition timing of the second data signal to generate a first output data symbol. The receiver furthermore samples the second data signal based on signal transition timing of the first data signal to generate a second output data symbol.

7. 发明授权

US11075669B2 M-ary differential chaos shift keying method based on chaotic shape-forming filter 有权
公开(公告)号：US11075669B2
公开(公告)日：2021-07-27
申请号：US16658186
申请日：2019-10-21
申请人： Xi'an Univeristy of Technology
发明人： Haipeng Ren , Chao Bai , Jie Li
IPC分类号： H04B1/709 , H04B1/7093 , G06F17/16 , H04L27/00 , H04L27/20 , H04L27/233
摘要： The present disclosure discloses an M-ary DCSK method based on chaotic shape-forming filtering. The method includes the following steps: at S1, parameters of a communication system are set; at S2, HP information and LP information to be sent in each time slot are prepared; at S3, the information to be sent is modulated; at S4, a chaotic carrier is generated through a chaotic shape-forming filter; at S5, a transmitted signal is prepared; at S6, down-carrier frequency and matched filter is performed to a received signal; at S7, the sampling of a maximum SNR point is performed to an output signal of a matched filter; at S8, the decision of high priority information bits is resumed; and at S9, the decision of low priority information bits is resumed.

8. 发明申请

US20210176103A1 METHOD FOR DEMODULATING DIGITAL SIGNALS USING MULTIPLE DIGITAL DEMODULATORS 有权
公开(公告)号：US20210176103A1
公开(公告)日：2021-06-10
申请号：US17254696
申请日：2019-06-21
申请人： SAFRAN DATA SYSTEMS , CENTRE NATIONAL D'ETUDES SPATIALES
发明人： Alain THOMAS , Jean-Marc LEVEAU , Stanislas AUGARDE , Emmanuel BOUISSON , Adrien GAY
IPC分类号： H04L27/233 , H04L7/06 , H04B1/00
摘要： Method for processing a sequence of digital signal samples comprising a first sub-sequence and a second sub-sequence, said method comprising: forming (106) a first block of samples comprising the first sub-sequence and a second block of samples comprising header samples followed by the second sub-sequence; demodulating (108) the first block of samples through a digital demodulator to produce a first block of symbols, and the second block of digital signal samples through a second digital demodulator to produce a second block of symbols, the second demodulator implementing a carrier synchronisation or symbol rate synchronisation starting with the header samples (E6-E9), which comprise samples in a number adapted in such a way that the synchronisation is effective before the second demodulator demodulates the second sub-sequence; and reconstructing (114) a sequence of symbols by concatenating the first symbol block with the second symbol block.

9. 发明授权

US10998926B2 Method for compensating gain flatness of transceiver 有权
公开(公告)号：US10998926B2
公开(公告)日：2021-05-04
申请号：US16891049
申请日：2020-06-02
申请人： SUNWAVE COMMUNICATIONS CO., LTD.
发明人： Qingsong Chen , Xin Wang , Wenquan Wu , Ailin Ren
IPC分类号： H04B1/12 , H04B1/40 , H04L25/03 , H04B1/00 , H04L27/233
摘要： The present disclosure provides a method for compensating gain flatness of a transceiver including: a method for compensating gain flatness of a receiver, which compensates gain flatness of a receiving channel by using a complex-coefficient FIR filter in digital domain; and a method for compensating gain flatness of a transmitter, which compensates gain flatness of a transmitting channel by using a complex-coefficient FIR filter in digital domain. The method according to the present disclosure can balance compensation accuracy and calculation amount flexibly, and can focus on compensating the gain flatness at an edge of a frequency band, obtaining good performance with less calculation amount.

10. 发明授权

US10955547B2 Combined radar and communications system using common signal waveform 有权
公开(公告)号：US10955547B2
公开(公告)日：2021-03-23
申请号：US15988112
申请日：2018-05-24
申请人： The Boeing Company
发明人： Gary A. Ray
IPC分类号： G01S13/90 , G01S7/00 , G01S7/282 , G01S7/285 , G01S13/24 , G01S13/58 , H03D3/00 , H04L27/233 , H04L27/38
摘要： A system having a set of common hardware and common signal processing together with a common waveform family that can be used to achieve both efficient radar and efficient communications functions. The system includes a common radar/communications transmitter having a transmission antenna and a combined radar and communications receiver having a common reception antenna. The common radar/communications transmitter is configured to transmit combined radar/communications waveform-modulated signals comprising symbols, each symbol consisting of an up chirp and a down chirp. The combined radar and communications receiver includes a baseband radar signal processing module configured to estimate range and range rate of a radar object from the received symbols and a baseband communications signal processing module configured to detect slopes and initial phases of the up and down chirps of each received symbol.

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