Patents Examined by David S Huang
-
Patent number: 11297579Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may filter a group of uplink reference signals so that filtering delays of the group of uplink reference signals are consistent based at least in part on a filtering constraint for the group of uplink reference signals; and transmit the group of uplink reference signals. Numerous other aspects are provided.Type: GrantFiled: January 20, 2020Date of Patent: April 5, 2022Assignee: QUALCOMM IncorporatedInventors: Sony Akkarakaran, Wei Yang, Alexandros Manolakos
-
Patent number: 11283569Abstract: This application provides a data transmission method, a network device, and a terminal device. The method includes: generating, by the network device, first information, where a value of a bit included in the first information is used to indicate a demodulation reference symbol (DMRS) port combination in a second set, each DMRS port combination in the second set belongs to a first set, the first set includes a plurality of DMRS port combinations, the DMRS port combination includes at least one DMRS port, and a quantity of DMRS port combinations included in the second set is less than a quantity of DMRS port combinations included in the first set; and sending, by the network device, the first information to the terminal device. According to embodiments of this application, signaling overheads can be reduced.Type: GrantFiled: February 11, 2020Date of Patent: March 22, 2022Assignee: Huawei Technologies Co., Ltd.Inventors: Ruiqi Zhang, Jianqin Liu
-
Patent number: 11283666Abstract: A wireless communications system includes a stochastic pre-distortion actuator configured to receive a carrier-modulated signal and convert the carrier-modulated signal into an output signal. The system includes one or more antennas configured to receive the output signal and transmit the output signal, one or more power amplifiers electrically coupled between the pre-distortion actuator and the one or more antennas and a receiver configured to receive the output signal over-the-air and generate feedback based on the output signal. The pre-distortion actuator is configured to generate the output signal by applying a correction to the carrier-modulated signal that cancels out nonlinearities associated with the one or more antennas and/or the one or more power amplifiers. The pre-distortion actuator is configured based on the feedback.Type: GrantFiled: February 25, 2021Date of Patent: March 22, 2022Assignee: Space Exploration Technologies Corp.Inventors: Martin S. McCormick, Feipeng Wang
-
Patent number: 11283492Abstract: According to the present invention, a transmitting station apparatus includes: a plurality of modulation units that modulates a plurality of streams into which transmission data is divided to generate a plurality of first data signals; a training signal generation unit that generates a known training signal; a linear equalization unit that linearly equalizes the plurality of first data signals using a tap coefficient for removing inter-antenna interference and inter-symbol interference and outputs second data signals on which transmission beam forming and equalization are simultaneously performed; and a plurality of transmitting station communication units that transmit the training signal or the second data signals to a receiving station apparatus and receive the tap coefficient from the receiving station apparatus, and a receiving station apparatus includes: a coefficient estimation unit that estimates a channel impulse response from the training signal and calculates the tap coefficient based on the channeType: GrantFiled: October 18, 2019Date of Patent: March 22, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Keita Kuriyama, Hayato Fukuzono, Masafumi Yoshioka, Tsutomu Tatsuta
-
Patent number: 11271696Abstract: There is provided mechanisms for performing beam management. A method is performed by a radio transceiver device. The method comprises transmitting a reference signal in a transmission beam as part of the beam 5 management. The reference signal in the transmission beam occupies time/frequency resources that extend over a frequency interval. The transmission beam has a frequency-dependent polarization over the frequency interval.Type: GrantFiled: October 10, 2017Date of Patent: March 8, 2022Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Andreas Nilsson, Fredrik Athley, Sven Petersson
-
Patent number: 11258640Abstract: An apparatus for a mobile communication device adapted for digital pre-distortion that includes a memory and a processor operatively coupled to the memory of the processor. The processor receives a first input signal and also receives a first output signal from a power amplifier that is based on the first input signal. The processor additionally varies compression applied to a second input signal based on the first output signal of the power amplifier, generates a distortion compensation vector for the second input signal based on the first output signal of the power amplifier, and also varies an input excitation signal supplied to the power amplifier based on the first output signal of the power amplifier.Type: GrantFiled: March 30, 2018Date of Patent: February 22, 2022Assignee: Intel CorporationInventors: Armando Cova, Christoph Hepp, Gunther Kraut, Andreas Langer
-
Patent number: 11251832Abstract: Nyquist folding receivers (NYFRs) are disclosed that use three or more non-modulated sampling clock signals with different frequencies to produce multiple projections in a sampled output. Using these three or more different sampling clock signals, multiple Nyquist zones are aliased together while still allowing signals from different Nyquist zones to be separated and identified in later processing based upon the sampling provided by the different sampling clock signals. NYFR sampling receivers are also disclosed that simultaneously produce multiple separate and different parallel channels from an input signal, with each different channel having a different sampling clock sampling rate from the other channels so as to generate a respective folding pattern that is different from the folding pattern generated by the respective RF sampling rate of each of the other simultaneous and parallel channels.Type: GrantFiled: February 26, 2021Date of Patent: February 15, 2022Assignee: L-3 Communications Integrated Systems L.P.Inventors: Gerald L. Fudge, Ryan Lange, Calvin A. Coffey, Frank A. Boyle, Cameron Johnson, Christopher A. Fox
-
Patent number: 11218345Abstract: A method and apparatus for processing a signal to generate equalizer codes, which are used to control equalization of the signal, that comprises processing the signal to identify the eyes of the signal, and for each eye, calculating an eye height and calculating a noise value. For each eye, squaring the eye height to generate an eye height product and dividing the eye height product by the noise value to generate a Q2 value. Using the calculated Q2 values optimizing, through adaptation, the equalizer codes. Calculating the noise values may include calculating an ISI value for each band of the signal and then calculating the eye height for each eye as the difference between the adjacent upper average value and the adjacent lower average value. Then, for each eye, calculating a noise value by summing the ISI value for the band above the eye and the band below the eye.Type: GrantFiled: September 18, 2020Date of Patent: January 4, 2022Assignee: MACOM Technology Solutions Holdings, Inc.Inventors: George L. Barrier, IV, Fernando Gonzalez
-
Patent number: 11211960Abstract: Decision feedback equalization (DFE) is used to help reduce inter-symbol interference (ISI) from a data signal received via a band-limited (or otherwise non-ideal) channel. A first PAM-4 DFE architecture has low latency from the output of the samplers to the application of the first DFE tap feedback to the input signal. This is accomplished by not decoding the sampler outputs in order to generate the feedback signal for the first DFE tap. Rather, weighted versions of the raw sampler outputs are applied directly to the input signal without further analog or digital processing. Additional PAM-4 DFE architectures use the current symbol in addition to previous symbol(s) to determine the DFE feedback signal. Another architecture transmits PAM-4 signaling using non-uniform pre-emphasis. The non-uniform pre-emphasis allows a speculative DFE receiver to resolve the transmitted PAM-4 signals with fewer comparators/samplers.Type: GrantFiled: December 8, 2020Date of Patent: December 28, 2021Assignee: Rambus Inc.Inventors: Masum Hossain, Nhat Nguyen, Yikui Jen Dong, Arash Zargaran-Yazd, Wendemagegnehu Beyene
-
Patent number: 11206158Abstract: According to one embodiment, a communication device includes a control circuit. The control circuit determines an output waveform of the data to be received from an external device. The control circuit stores information relating to the output waveform into a nonvolatile memory in response to determining of the output waveform of the data from among N (N is a natural number of three or more) types of output waveforms. The control circuit determines an output waveform of the data from among M or less types of output waveforms in the N types of output waveforms (M<N) (M is a natural number of N?2 or more) based on the information stored in the nonvolatile memory, when the information is stored in the nonvolatile memory.Type: GrantFiled: August 28, 2019Date of Patent: December 21, 2021Assignee: TOSHIBA MEMORY CORPORATIONInventor: Kiyohito Sato
-
Patent number: 11197184Abstract: A method by which a user device comprising a plurality of RF modules and a plurality of antenna modules transmits and receives a signal in a wireless communication system, according to the present invention, includes the steps of: during a measurement interval for the measurement of the quality of a neighbor cell, using the first antenna module, among a plurality of antenna modules, to communicate with a serving cell, and using the second antenna module, among the plurality of antenna modules, to measure the quality of one or more neighbor cells; and reporting the measurement result to the base station of the serving cell.Type: GrantFiled: August 10, 2018Date of Patent: December 7, 2021Assignee: LG ELECTRONICS INC.Inventors: Sukhyon Yoon, Hyunsoo Ko, Kijun Kim, Eunsun Kim
-
Patent number: 11190225Abstract: The application discloses a transmitter with self-interference calibration ability, including: a signal generation unit for generating a signal; a CORDIC for generating an amplitude modulation signal and a phase modulation signal according to the signal; phase processing unit, for generating a frequency signal according to the phase modulation signal; a DPLL, including: a DCO, self-interference calibration unit, for generating phase compensation according to the signal, a phase difference and a reference clock; and a DCO control generation unit; and an output unit, for generating an output signal according to the amplitude modulation signal and a DCO output signal.Type: GrantFiled: September 30, 2020Date of Patent: November 30, 2021Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventor: Chih-Chieh Wang
-
Patent number: 11190256Abstract: There is provided mechanisms for configuring beamforming settings. A method is performed by a wireless radio transceiver device configured to communicate in directional beams. The method comprises obtaining a performance indication requiring configuration of the beamforming settings of the wireless radio transceiver device. The method comprises selecting a similarity measure objective based on what kind of performance indication was obtained. The method comprises determining, based on the similarity measure objective and results from a similarity measure procedure applied to pairs of received signals, an order in which to evaluate the directional beams when configuring the beamforming settings.Type: GrantFiled: November 25, 2019Date of Patent: November 30, 2021Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Andreas Nilsson, Fredrik Athley, Sven Petersson
-
Patent number: 11184262Abstract: A beam measurement processing method and a beam measurement processing device are provided. The beam measurement processing method for a network side device includes: when Beam Pair Link (BPL) quality is measured in a first mode, determining a first completion time at which a beam sweeping for all reception beams has been completed by a User Equipment (UE) corresponding to a current transmission beam, and transmitting a next transmission beam after the first completion time; and/or when the BPL quality is measured in a second mode, determining a second completion time at which a beam sweeping for all transmission beams has been completed by a network side device corresponding to a current reception beam, and performing a next beam sweeping for all the transmission beams after the second completion time.Type: GrantFiled: June 12, 2018Date of Patent: November 23, 2021Assignee: VIVO MOBILE COMMUNICATION CO., LTD.Inventors: Yu Yang, Yang Song
-
Patent number: 11184209Abstract: A signal processing method in a digital-domain includes: adding a random number sequence signal into a time-domain input signal to generate a time-domain processed input signal; performing a Fourier transform operation upon the time-domain processed input signal to generate a frequency-domain processed input signal; performing an equalizer operation upon the frequency-domain processed input signal to generate a frequency-domain output signal according to coefficients of the equalizer operation; performing an inverse Fourier transform operation upon the frequency-domain output signal to generate a time-domain output signal; generating a decision output signal and generating a time-domain error signal according to the time-domain output signal; and determining the coefficients according to the time-domain error signal and the frequency-domain processed input signal.Type: GrantFiled: May 10, 2021Date of Patent: November 23, 2021Assignee: Realtek Semiconductor Corp.Inventors: Yun-Chih Tsai, Liang-Wei Huang
-
Patent number: 11159951Abstract: A first radio node, Node1, in a wireless communication network transmits a signal to a second radio node, Node2, under a constraint of spectrum flatness—meaning a maximum variation of power of the transmitted signal, within a transmission bandwidth. Spectrum flatness configurations may be determined by a network node and transmitted to Node1. Alternatively, Node1 may determine a spectrum flatness configuration and transmit it to a network node. In either case, Node1 adapts one or more coefficients of a transmission filter such that a transmission to Node2 will be in accordance with the obtained spectrum flatness configuration, and then transmits a signal to Node2 using the transmission filter with the adapted coefficients.Type: GrantFiled: March 19, 2019Date of Patent: October 26, 2021Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Muhammad Kazmi, Eric Nordström, Esther Sienkiewicz, Christian Bergljung, Imadur Rahman
-
Patent number: 11152978Abstract: A communication device includes a processing circuit, the processing circuit being configured as: mapping a first information bit part used for a receiving end to a corresponding channel based on a pre-set mapping rule so as to execute spatial modulation with respect to the first information bit part of the receiving end; allocating a transmission power to the receiving end; and controlling the transmission power allocated through a mapped channel to transmit a second information bit part used for the receiving end. In the case of the first information bit parts used for multiple receiving ends being the same, the channels mapped for multiple receiving ends are the same. The multi-user spatial modulation performs spatial modulation for multiple receiving ends at the same time through a multiplexing channel of the transmitting end, improving the additional modulation order and the data transmission rate which can be obtained by each receiving end.Type: GrantFiled: June 24, 2020Date of Patent: October 19, 2021Assignee: SONY CORPORATIONInventors: Xudong Zhu, Zhaocheng Wang, Jianfei Cao
-
Patent number: 11153131Abstract: Increase the effective data rate of high-speed data communication. It has a memory unit, a reception signal line, and a transmission signal line capable of communicating with an external device via a control circuit and an equalizer, controllers for controlling transmission and reception of signals to and from the external device, and a correction coefficient associated with an identification information and the identification information of the external device. The control circuit sets the correction coefficient associated with the identification information to the equalizer.Type: GrantFiled: April 21, 2020Date of Patent: October 19, 2021Assignee: RENESAS ELECTRONICS CORPORATIONInventor: Kouji Ueta
-
Patent number: 11152943Abstract: A dual-edge aware clock divider configured to generate an output clock based on the input clock and a ratio of an integer M over an integer N is disclosed herein. The frequency of the output clock is based on a frequency of the input clock multiplied by the ratio (M/N), wherein M may be set to a range up to N. The output clock includes M pulses within a sequence time window having a length of N periods of the input clock. The output clock includes one or more rising edges that are substantially time aligned with one or more rising edges and one or more falling edges of the input clock, respectively. The dual-edge aware clock divider is configured to generate the output clock based on inverted and non-inverted portions of the input clock. A hybrid clock divider including the dual-edge and single-edge aware techniques is provided.Type: GrantFiled: May 26, 2020Date of Patent: October 19, 2021Assignee: QUALCOMM INCORPORATEDInventors: Kevin Bowles, Vijay Kiran Kalyanam, Sindhuja Sundararajan
-
Patent number: 11121901Abstract: The invention relates to a method for transmitting a group of Q symbols (A0; . . . ; AQ?1) in a DFTsOFDM radio signal, said radio signal being provided by applying a M size DFT and a N-size IDFT to a block of symbols X=(X0, . . . XM?1), said method comprising: —determining Q positions ni in the block of symbols, such as (I); —transmitting the Q symbols through the radio signal, such as for each i, samples of the symbol ai in the radio signal are equal to a result of the application of a DFTsOFDM scheme to a block of M symbols with values of symbols Xni+mL, being ej2?k(ni+mL)/MAi with k integer such as 0?k<K, with m integer such as 0?m<K.Type: GrantFiled: June 24, 2019Date of Patent: September 14, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Cristina Ciochina