Phase Shift Keying Patents (Class 375/308)
  • Patent number: 12120655
    Abstract: A user equipment (UE) may spatial time-division multiplex a plurality of sounding reference signal (SRS) ports, each of the plurality of SRS ports being associated with at least one of a set of orthogonal weights, the set of orthogonal weights corresponding to phase shifting, and transmit a plurality of SRSs via the plurality of spatially time-division multiplexed SRS ports simultaneously, each of the plurality of SRSs including at least two SRS repetition. The plurality of SRSs may be configured to form or present a quasi-co-location (QCL) receive (Rx) beam subspace. The UE may configure the plurality of SRSs to form the subspace as the QCL Rx beam subspace, and a base station may signal the UE to a specific Rx beam subspace such that it is aligned to the base station's beamforming direction, and achieve spatial multiplexing gain in the QCL Rx beam subspace.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: October 15, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Sayed Khairy Abdelghaffar, Jing Jiang, Joseph Patrick Burke, Tingfang Ji, Peter Gaal, Alexei Yurievitch Gorokhov
  • Patent number: 12089232
    Abstract: Examples described herein include systems and methods which include wireless devices and systems with examples of configuration modes for baseband units (BBU) and remote radio heads (RRH). For example, a computing system including a BBU and a RRH may receive a configuration mode selection including information indicative of a configuration mode for respective processing units of the BBU and the RRH. The computing system allocates the respective processing units to perform wireless processing stages associated with a wireless protocol. The BBU and/or the RRH may generate an output data stream based on the mixing of coefficient data with input data at the BBU and/or the RRH. Examples of systems and methods described herein may facilitate the processing of data for 5G wireless communications in a power-efficient and time-efficient manner.
    Type: Grant
    Filed: April 25, 2023
    Date of Patent: September 10, 2024
    Inventors: Fa-Long Luo, Jaime Cummins, Tamara Schmitz, Jeremy Chritz
  • Patent number: 12074671
    Abstract: There is provided mechanisms for polarization aligned transmission towards a receiver device. A method is performed by a mobile wireless device. The mobile wireless device comprises an antenna array. The method comprises obtaining, based on analysis of an image of the receiver device as captured by an image capturing unit, information of orientation of the receiver device. The orientation pertains to orientation of an antenna of the receiver device towards which a signal is to be transmitted. The method comprises transmitting the signal from the antenna array towards the receiver device using a wave. The wave has its polarization aligned, based on the orientation of the receiver device, with the antenna of the receiver device.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: August 27, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Ashkan Kalantari, Shousheng He
  • Patent number: 12048005
    Abstract: A network device (e.g., a user equipment (UE), a new radio NB (gNB), or other network component) can process or generate a dynamic indication that indicates a transmission bandwidth based on a wideband bandwidth. One or more downlink (DL) signals can be provided with the indication of the transmission bandwidth that enables a tuning of communications within the wideband bandwidth based on the indication for new radio (NR) communications in heterogeneous network domains ranging from Enhanced Mobile Broadband (eMBB) to massive Machine-Type Communications (mMTC) and Ultra-Reliable Low-Latency Communications (URLLC) or the like.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: July 23, 2024
    Assignee: Apple Inc.
    Inventors: Salvatore Talarico, Lopamudra Kundu, Jeongho Jeon, Dae Won Lee
  • Patent number: 12035151
    Abstract: Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: July 9, 2024
    Assignee: Constellation Designs, LLC
    Inventors: Maged F. Barsoum, Christopher R. Jones
  • Patent number: 12019950
    Abstract: A soft decision audio decoding system for preserving audio continuity in a digital wireless audio receiver is provided that deduces the likelihood of errors in a received digital signal, based on generated hard bits and soft bits. The soft bits may be utilized by a soft audio decoder to determine whether the digital signal should be decoded or muted. The soft bits may be generated based on the detected point and a detected noise power, or by using a soft-output Viterbi algorithm. The value of the soft bits may indicate confidence in the strength of the hard bit generation. The soft decision audio decoding system may infer errors and decode perceptually acceptable audio without requiring error detection, as in conventional systems, as well as have low latency and improved granularity.
    Type: Grant
    Filed: February 28, 2022
    Date of Patent: June 25, 2024
    Assignee: Shure Acquisition Holdings, Inc.
    Inventor: Robert Mamola
  • Patent number: 12010531
    Abstract: Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: June 11, 2024
    Assignee: Constellation Designs, LLC
    Inventors: Maged F. Barsoum, Christopher R. Jones
  • Patent number: 11991535
    Abstract: Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: May 21, 2024
    Assignee: Constellation Designs, LLC
    Inventors: Maged F. Barsoum, Christopher R. Jones
  • Patent number: 11963019
    Abstract: Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: April 16, 2024
    Assignee: Constellation Designs, LLC
    Inventors: Maged F. Barsoum, Christopher R. Jones
  • Patent number: 11943051
    Abstract: Aspects present herein relate to methods and devices for wireless communication including an apparatus, e.g., a UE and/or a base station. The apparatus may encode a plurality of bits associated with QAM, the plurality of bits corresponding to a circular buffer associated with at least one RV, the plurality of bits including a plurality of systematic bits. The apparatus may also transfer the plurality of bits from the circular buffer associated with the at least one RV to a first buffer and a second buffer. Additionally, the apparatus may map the plurality of bits from the first buffer and the second buffer to a plurality of modulation symbols.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: March 26, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Jun Ma, Xiaoxia Zhang, Morteza Soltani, Raviteja Patchava, Elyes Balti, Tao Luo, Iyab Issam Sakhnini, Zhifei Fan, Dung Ngoc Doan
  • Patent number: 11909573
    Abstract: Methods, systems, and devices for wireless communications are described. A device (e.g., a base station or a user equipment (UE)) may identify a sequence length corresponding to a number of resource blocks, and select a modulation scheme based on the sequence length. The device may select, from a set of sequences associated with the modulation scheme, a sequence having the sequence length. In some examples, the set of sequences may include at least one of a set of time domain phase shift keying computer-generated sequences or a set of frequency domain phase shift keying computer-generated sequences. The device may generate a reference signal for a data transmission based on the sequence and transmit the reference signal within the number of resource blocks.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: February 20, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Wei Yang, Yi Huang, Seyong Park, Gokul Sridharan, Peter Gaal, Alexandros Manolakos, Xiao Feng Wang, Tingfang Ji
  • Patent number: 11902062
    Abstract: An apparatus for transmitting a bit in addition to a plurality of payload data symbols of a communication protocol is provided. The apparatus comprises an input interface configured to receive information about a bit value of the bit. Further, the apparatus comprises a transmission circuit configured to, if the bit value is a first value, transmit the plurality of payload data symbols at predetermined positions in a data signal as pulses of variable pulse length. The respective pulse length of each of the pulses is selected based on the symbol value of the payload data symbol represented by the respective pulse. If the bit value is a second value, the transmission circuit is configured to transmit a pulse exhibiting a pulse length being longer than a maximum payload data symbol pulse length defined in the communication protocol at the predetermined position of the pulse for the d-th payload data symbol of the plurality of payload data symbols, d=k+i if k+i?z. d=([k+i] mod z) if k+i>z.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: February 13, 2024
    Assignee: Intel Corporation
    Inventors: Elan Banin, Rotem Banin, Ofir Degani, Eytan Mann
  • Patent number: 11864006
    Abstract: Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: January 2, 2024
    Assignee: Constellation Designs, LLC
    Inventors: Maged F. Barsoum, Christopher R. Jones
  • Patent number: 11722159
    Abstract: A radio frequency module includes: a first filter circuit disposed on a first path that connects an antenna terminal and a first input/output terminal, and having a passband that is a first frequency band; a second filter circuit disposed on a second path that connects the antenna terminal and a second input/output terminal, and having a passband that is a second frequency band higher than the first frequency band; and a band-elimination filter circuit disposed on the second path and having an attenuation band that is a partial band of a third frequency band that belongs to an unlicensed band ranging from 5 GHz or higher, and is higher than the second frequency band. The second filter circuit is an LC filter circuit that includes an inductor and a capacitor.
    Type: Grant
    Filed: April 26, 2022
    Date of Patent: August 8, 2023
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Shinya Hitomi, Yuichi Tannan, Hirotsugu Mori
  • Patent number: 11575466
    Abstract: The invention discloses an error reconciliation method for a Learning With Errors (LWE) public key cryptography. The method includes an encoding algorithm and a decoding algorithm. The input of the encoding algorithm is a binary message vector u?{0,1}k with a length of k, the output is a q-ary vector z?Zqm with a length of m, where Zq={?q/2, . . . , q/2?1}; the input of the decoding algorithm is a q-ary vector w=z+e?Zqm containing errors with a length of m, and the output is a binary vector u?{0,1}k corresponding to z; the error reconciliation method for the LWE public key cryptography provided by the present invention combines a binary linear code with a Gray code to realize the error reconciliation scheme in LWE public key cryptography. The error reconciliation method can be used to solve the problem of error reconciliation in LWE public key cryptography. The scheme of the invention has good fault tolerance and can significantly improve the transmission rate of encrypted information.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: February 7, 2023
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Xiaoyun Wang, Anyu Wang, Yue Sun
  • Patent number: 11502877
    Abstract: A signal transmitting device includes an output control circuit and a transmitting circuit. The output control circuit generates a first encoded symbol, a second encoded symbol, a third encoded symbol, and a fourth encoded symbol and an inverted flag signal by inverting the logic levels of second bits of a first symbol, a second symbol, a third symbol, and a fourth symbol, and generates a first output control signal and a second output control signal based on the first to fourth encoded symbols, when the maximum transition is present among the first to fourth symbols. The transmitting circuit may transmit the inverted flag signal and a Tx (Transmit) signal generated based on the first and second output control signals.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: November 15, 2022
    Assignee: SK hynix Inc.
    Inventor: Hyun Bae Lee
  • Patent number: 11438205
    Abstract: Systems and methods for ultra-wideband Crest Factor Reduction (CFR) are provided. In some embodiments, a method performed by a wireless node for performing CFR includes performing a first CFR step on a plurality of input signals at a first sampling rate with joint peak detection and band-specific noise shaping; and performing a second CFR step on the resulting plurality of input signals at a second sampling rate with joint peak detection and joint noise shaping where the second sampling rate is higher than the first sampling rate. In this way, Peak-to-Average Power Ratio (PAPR) reduction may be increased while the computational complexity is reduced.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: September 6, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Rui Hou, Leonard Rexberg, Bo Göransson, Richard Hellberg, Mats Klingberg, Stefan Engström
  • Patent number: 11381437
    Abstract: Embodiments of the present disclosure relate to a communication system to generate a waveform by multiplexing multiple user data. The system comprises at least one transceiver, a multiplexer and a processor. The at least one transceiver configured to perform at least one of receiving a plurality of data from a transmitter, and transmitting a generated waveform to a destination. The multiplexer configured to multiplex a plurality of data associated with a plurality of users, to generate multiplexed data. The processor is configured to perform a rotation operation on the multiplexed data to produce a rotated data. Also, the processor is configured to transform the rotated data using Fourier transform to produce transformed data. Further, the processor is configured to map the transformed data using a predefined number of subcarriers to produce a mapped data sequence and thereafter, process the mapped data sequence to generate the waveform.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: July 5, 2022
    Inventor: Kiran Kumar Kuchi
  • Patent number: 11374684
    Abstract: A technique for radio transmitting data is described. As to a method aspect of the technique data to be transmitted to a receiver is represented by at least two partial modulation symbols. Each of the at least two partial modulation symbols is associated to a different layer of the radio transmission to the receiver. A modulation symbol is generated by combining the at least two partial modulation symbols at different power levels according to the associated layer. The modulation symbol is transmitted to the receiver.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: June 28, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Leif Wilhelmsson, Rocco Di Taranto, Miguel Lopez, Roland Smith
  • Patent number: 11283664
    Abstract: A reception device includes: a receiver that receives a multiplexed signal; a first demapper that demaps the multiplexed signal, with a second modulated symbol stream being included in the multiplexed signal as an undetermined signal component, to generate a first bit likelihood stream; a second demapper that demaps the multiplexed signal, with a first modulated symbol stream being included in the multiplexed signal as an undetermined signal component, to generate a second bit likelihood stream; a first decoder that performs error control decoding on the first bit likelihood stream; and a second decoder that performs error control decoding on the second bit likelihood stream. The multiplexed signal is a signal on which the first modulated symbol stream and the second modulated symbol stream are superposed, the second modulated symbol stream being subjected to conversion in accordance with the first modulated symbol stream in only a first direction.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: March 22, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 11283545
    Abstract: Embodiments of this application provide a modulation method and apparatus. The method includes: receiving a code word sequence, where each code word includes N bits, and the code word sequence includes at least a first code word; mapping the code word sequence into M sequences, where each sequence includes N/M bits from the first code word; mapping the M sequences into a symbol sequence, where each symbol is corresponding to M bits, the M bits are respectively from the M sequences, first bits corresponding to N/M first-type symbols are from the first code word, and second bits corresponding to N/M second-type symbols are from the first code word. Thus a signal-to-noise ratio requirement during higher order modulation lowered.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: March 22, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xi Yan, Huixiao Ma, Wai Kong Raymond Leung, Long Luo, Yan Cui
  • Patent number: 11108460
    Abstract: Systems, algorithms and methods for reclaiming unused portions of a satellite broadcast service's bandwidth for new services, utilizing higher performance coding techniques to yield better throughput, are presented. These systems, algorithms and methods achieve the reclaimed bandwidth in a way that is invisible to a legacy receiver, and that does not interfere with its reception of a legacy signal. In one embodiment, new data may be transmitted within a legacy transmission frame, for example within its cluster structure, using the same modulation and synchronization as used for the legacy data. The new data may be inserted into a channel or other subdivision at a head end. In another embodiment, one or more clusters or subdivisions with only new data may be transmitted, using the same modulation and synchronization as the legacy data clusters, but now employing a higher performing FEC and data interleaving structure on those clusters which contain only new data to yield an increase in available throughput.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: August 31, 2021
    Assignee: Sirius XM Radio Inc.
    Inventors: Edward Schell, Carl Scarpa, John Goslin
  • Patent number: 11108419
    Abstract: A transmitter may be configured to generate a reference signal having a non-constant envelope for nonlinearity estimation by a receiver. The transmitter may transmit the reference signal. A receiver may be configured to receive, from the transmitter, the reference signal having the non-constant envelope. The receiver may estimate at least one nonlinearity characteristic based on the reference signal having the non-constant envelope. The receiver may transmit feedback based on the at least one nonlinearity characteristic and/or perform at least one digital post distortion (DPoD) operation based on the at least one nonlinearity characteristic.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: August 31, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Ariel Yaakov Sagi, Igor Gutman
  • Patent number: 11032116
    Abstract: Provided are wireless communication methods and devices. In one embodiment, a wireless communication method performed by a wireless communication device comprises: transmitting a data packet repeatedly in multiple subframes including at least one normal subframe and at least one special subframe to another wireless communication device, wherein the available resources in the special subframe are different from that in the normal subframe, the data packet includes multiple modulated symbols which are divided into multiple modulated-symbol sets, in each subframe, each OFDM symbol is mapped by one of the modulated-symbol sets, and in every subframe, the modulated symbols in the same modulated-symbol set are mapped onto REs in one OFDM symbol in a fixed order. In another embodiment, multiple repetitions of the data packet are transmitted in each subframe, and in each special subframe, different repetitions are mapped onto REs with cyclic shift.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: June 8, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Chi Gao, Li Wang, Lilei Wang, Hidetoshi Suzuki, Masayuki Hoshino
  • Patent number: 10999835
    Abstract: Examples described herein include systems and methods which include wireless devices and systems with examples of configuration modes for baseband units (BBU) and remote radio heads (RRH). For example, a computing system including a BBU and a RRH may receive a configuration mode selection including information indicative of a configuration mode for respective processing units of the BBU and the RRH. The computing system allocates the respective processing units to perform wireless processing stages associated with a wireless protocol. The BBU and/or the RRH may generate an output data stream based on the mixing of coefficient data with input data at the BBU and/or the RRH. Examples of systems and methods described herein may facilitate the processing of data for 5G wireless communications in a power-efficient and time-efficient manner.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: May 4, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Fa-Long Luo, Jaime Cummins, Tamara Schmitz, Jeremy Chritz
  • Patent number: 10921355
    Abstract: A method for detecting a plurality of useful signals in a total signal. The useful signals correspond to radiofrequency signals emitted by different terminals in a multiplexing frequency band. A plurality of spectrograms calculated that have a compensated linear frequency drift and are respectively associated with different linear frequency drift values. For each analysis frequency and each spectrogram, time envelope filtering of the values is performed at the different times for analyzing the spectrogram at the analysis frequency using a filter representing a reference time envelope of the useful signals. A useful signal is detected at an analysis time and at an analysis frequency in response to a verification of a predefined detection criterion by the value from a spectrogram resulting from filtering at the analysis time and at the analysis frequency.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: February 16, 2021
    Assignee: AIRBUS DEFENCE AND SPACE SAS
    Inventors: Mathieu Picard, Mehdi Anteur
  • Patent number: 10911191
    Abstract: Accordingly, the invention provides a method and apparatus for managing communication operations in an Orthogonal Frequency Division Multiplexing (OFDM) system. Further the method includes generating, by a first OFDM apparatus (100), a signal comprising data and at least one of a Reference Signal (RS) and a message, the signal is generated by repeating the at least one of the RS and the message over a set of OFDM symbols using a resource mapper, performing an Inverse Fourier Transform operation (IFFT) according to a numerology of a first OFDM apparatus, adding a Cyclic Prefix (CP) to the data, and adding a block CP to the at least one of the repeated RS and the message. Further, the method includes transmitting, by the first OFDM apparatus (100), the signal to a second OFDM apparatus (200).
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: February 2, 2021
    Assignees: CENTRE OF EXCELLENCE IN WIRELESS TECHNOLOGY, INDIAN INSTITUTE OF TECHNOLOGY AMDRAS
    Inventors: Abhijeet Abhimanyu Masal, Priyanka Dey, Sunil Kaimalettu, Dhivagar Baskaran, Paka Venkata Sriharsha, Jeniston Deviraj Klutto Milleth, Bhaskar Ramamurthi
  • Patent number: 10873441
    Abstract: The present invention relates to a method for synchronizing digital data sent in series by a transmitter to a receiver, and to a device allowing such a method to be implemented. The invention aims to provide a method for synchronizing serial digital data without using a FIFO memory. The invented is based on the use of a single clock, in particular that of the receiver.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: December 22, 2020
    Assignee: TELEDYNE E2V SEMICONDUCTORS SAS
    Inventors: Quentin Beraud-Sudreau, Jérôme Ligozat
  • Patent number: 10862512
    Abstract: A storage device may include a decoder configured to connect bits to a content node based on content-aware decoding process. The content-aware decoding process may be dynamic and determine connection structures of bits and content nodes based on patterns in data. In some cases, the decoder may connect non-adjacent bits to a content node based on a content-aware decoding process. In other cases, the decoder may connect a first number of bits to a first content node and a second number of bits to a second content node. In such cases, the first number of bits and the second number of bits are a different number.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: December 8, 2020
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Dudy David Avraham, Eran Sharon, Omer Fainzilber, Ran Zamir, Stella Achtenberg
  • Patent number: 10708794
    Abstract: Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: July 7, 2020
    Assignee: Constellation Designs, LLC
    Inventors: Maged F. Barsoum, Christopher R. Jones
  • Patent number: 10701570
    Abstract: Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: June 30, 2020
    Assignee: Constellation Designs, LLC
    Inventors: Maged F. Barsoum, Christopher R. Jones
  • Patent number: 10693429
    Abstract: Methods and systems for phased array tapering include setting a gain at a phase-invariant variable gain amplifier in each of a set of front-ends of a phased array transceiver, to perform tapering of beam pattern side lobes. Setting the gain includes setting a first gain at a first stage of the phase-invariant variable gain amplifier and setting a second gain at a second stage of the phase-invariant variable gain amplifier. A dependency of a phase shift of the first stage on the gain of the first stage is equal to and opposite a dependency of a phase shift of the second stage on the gain of the second stage.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: June 23, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: John F. Bulzacchelli, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Patent number: 10687225
    Abstract: According to certain embodiments, a method for providing interference characterization data by a network node includes providing telecommunications services for a first wireless device located associated with the network node. The network node identifies characteristic data associated with at least one characteristic of an interfering signal associated with a second wireless device. The characteristic data associated with the interfering signal associated with the second wireless device is transmitted to the first wireless device. The at least one characteristic may identify at least one power characteristic associated with the interfering signal.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: June 16, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (PUBL)
    Inventors: George Jöngren, Bo Lincoln, Stefania Sesia
  • Patent number: 10659268
    Abstract: Provided are wireless communication methods and devices. In one embodiment, a wireless communication method performed by a wireless communication device comprises: transmitting a data packet repeatedly in multiple subframes including at least one normal subframe and at least one special subframe to another wireless communication device, wherein the available resources in the special subframe are different from that in the normal subframe, the data packet includes multiple modulated symbols which are divided into multiple modulated-symbol sets, in each subframe, each OFDM symbol is mapped by one of the modulated-symbol sets, and in every subframe, the modulated symbols in the same modulated-symbol set are mapped onto REs in one OFDM symbol in a fixed order. In another embodiment, multiple repetitions of the data packet are transmitted in each subframe, and in each special subframe, different repetitions are mapped onto REs with cyclic shift.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: May 19, 2020
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Chi Gao, Li Wang, Lilei Wang, Hidetoshi Suzuki, Masayuki Hoshino
  • Patent number: 10630349
    Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may divide a data stream into multiple data sub-streams. The wireless device may map the data sub-streams to a set of layers of a multi-layer modulated stream. The wireless device may encode, rate match, modulate, spread and scramble the set of layers before combining them into a combined data stream. The number of layers in the set of layers may be configurable. The wireless device may apply scrambling sequences to the layers. An additional phase rotation or power scaling factor may be applied to each layer. The layers may then be synchronized and combined into a combined data stream. A set of combined data streams may be mapped to multiple-input, multiple-output (MIMO) layers. The wireless device may precode the MIMO layers, map the MIMO layers to tones, and transmit the combined data streams.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: April 21, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Seyong Park, Joseph Binamira Soriaga, Jay Kumar Sundararajan, Tingfang Ji, Naga Bhushan
  • Patent number: 10523410
    Abstract: A signal demodulation apparatus and method for a closed communication system are provided. An analog voltage comparator is configured to convert a modulated signal and output the digital signal. The modulated signal is a 2ASK, 2FSK or 2PSK modulated signal. A sampling decider is configured to sample the digital signal to obtain a sampled digital signal. The sampling decider includes a high-frequency clock sampling circuit and a feature extracting and deciding circuit. The high-frequency clock sampling circuit is configured to sample the digital signal and to sample at least two points for a high level of any pulse of the digital signal. The feature extracting and deciding circuit is configured to extract a feature of the sampled digital signal to obtain an extracted feature of the sampled digital signal, and compare the extracted feature with features of known digital modulated signals to acquire a value represented by the digital signal.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: December 31, 2019
    Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventor: Guangyao Wang
  • Patent number: 10404163
    Abstract: A reference voltage generating apparatus, includes a digital data generating circuit configured to convert an input first reference voltage to digital control data and store the digital control data; and a converting circuit configured to generate a second reference voltage corresponding to the first reference voltage using the stored digital control data.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: September 3, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seungchul Jung, Sang Joon Kim
  • Patent number: 10397036
    Abstract: Provided are wireless communication methods and devices, in one embodiment, a wireless communication method performed by a wireless communication device comprises: transmitting a data packet repeatedly in multiple subframes including at least one normal subframe and at least one special subframe to another wireless communication device, wherein the available resources in the special subframe are different from that in the normal subframe, the data packet includes multiple modulated symbols which are divided into multiple modulated-symbol sets, in each subframe, each OFDM symbol is mapped by one of the modulated-symbol sets, and in every subframe, the modulated symbols in the same modulated-symbol set are mapped onto REs in one OFDM symbol in a fixed order. In another embodiment, multiple repetitions of the data packet are transmitted in each subframe, and in each special subframe, different repetitions are mapped onto REs with cyclic shift.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: August 27, 2019
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Chi Gao, Li Wang, Lilei Wang, Hidetoshi Suzuki, Masayuki Hoshino
  • Patent number: 10389386
    Abstract: A data processing apparatus, a data processing method, and a program are disclosed. They improve communication performance by performing bit interleaving suitable for a modulation method that is a non-uniform constellation. One example of a data processing apparatus includes a mapping unit configured to generate a second bit sequence by mapping a first bit sequence to any symbol on a complex plane corresponding to a NUC modulation method, an inter-symbol interleaving unit configured to generate a third bit sequence by performing inter-symbol interleaving to the second bit sequence, an intra-symbol interleaving unit configured to generate a fourth bit sequence by performing intra-symbol interleaving for shifting M bits as a whole of the third bit sequence per a same number of M bits as the bit number M representing the symbol, and a modulation unit configured to wirelessly transmit the fourth bit sequence according to the NUC modulation method.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: August 20, 2019
    Assignee: Sony Corporation
    Inventor: Makiko Yamamoto
  • Patent number: 10352997
    Abstract: A clock jitter measurement circuit includes: an internal signal generator configured to generate a single pulse signal and an internal clock signal which are both synchronized with an input clock signal received by the clock jitter measurement circuit, a plurality of edge delay cells serially connected to each other and configured to generate a plurality of edge detection signals respectively corresponding to a plurality of delay edges obtained by delaying an edge of the internal clock signal, a plurality of latch circuits configured to latch the single pulse signal in synchronization with the plurality of edge detection signals and output a plurality of sample signals, and a count sub-circuit configured to count a number of activated sample signals of the plurality of sample signals and output a count value based on the counted number of activated sample signals.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: July 16, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kang-Yeop Choo, Hyun-Ik Kim, Won-Seok Kim, Jung-Ho Kim, Ji-Hyun Kim, Tae-Ik Kim
  • Patent number: 10333762
    Abstract: There is provided a transmitter configured to transmit a symbol in a constellation, the symbol corresponding to data to be transmitted, the transmitter including a memory in which key information for generating pseudo random numbers are stored, and a processor coupled to the memory and configured to generate a pseudo random number every the symbol, select data patterns every data areas in which information of types of a data pattern are arranged, based on the pseudo random number, so that a distance between the data patterns to be selected is more than a predetermined value on a plane on which the data areas are continuously arranged every a horizontal axis and a vertical axis of the constellation, and determine the symbol to be transmitted, based on the selected data patterns according to a position of a data pattern corresponding to the data to be transmitted in the constellation.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: June 25, 2019
    Assignee: FUJITSU LIMITED
    Inventor: Setsuo Yoshida
  • Patent number: 10277263
    Abstract: A radio receiver, configured to use an impulse UWB, includes: a reception antenna which receives the impulse UWB, a reception unit which amplifies the received impulse UWB and detects an envelope of the impulse UWB, maximum-peak and minimum-peak detection units which detect a maximum value and minimum value of the envelope, respectively, a comparator which acquires signal data from the envelope with an initial threshold value, a baseband unit which measures an error rate of the signal data, an MPU which calculates a correction value based on the error rate, and an arithmetic unit which calculates a corrected threshold value based on the maximum, minimum and correction values. The arithmetic unit transmits the corrected threshold value to the comparator. The comparator acquires the signal data from the envelope based on the corrected threshold value transmitted from the arithmetic unit.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: April 30, 2019
    Assignees: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY, GIT JAPAN INCORPORATED
    Inventors: Huan-Bang Li, Ryu Miura, Hisashi Nishikawa, Atsushi Osada
  • Patent number: 10277359
    Abstract: A method and apparatus for receiving feedback information of a transmitter in a mobile communication system are provided. The method includes determining a parameter related to a first user signal; transmitting the first user signal based on the parameter related to the first user signal to a receiver; and receiving feedback information associated with the first user signal and an interference signal based on the first user signal.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: April 30, 2019
    Assignees: Samsung Electronics Co., Ltd, Dongguk University Industry-Academic Cooperation Foundation
    Inventors: Jongsoo Choi, Byoung Jo Choi, Seung Hoon Hwang, Eun Sun Hwang
  • Patent number: 10212680
    Abstract: Embodiments provide synchronization signal sending and receiving methods, apparatuses, and devices. The synchronization signal sending apparatus of the embodiments includes a synchronization signal generation module, configured to generate a synchronization signal according to one or more sequences, where a length or lengths of the one or more sequences are determined according to a length of the synchronization signal. The apparatus also includes a baseband signal obtaining module, configured to obtain a baseband signal according to the synchronization signal generated by the synchronization signal generation module. Additionally, the apparatus includes a first sending module, configured to send, after performing radio frequency conversion, out the baseband signal obtained by the baseband signal obtaining module.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: February 19, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Chao Li
  • Patent number: 10205612
    Abstract: The present invention describes a method and system for simultaneous transmission of data to coherent and non-coherent receivers. The method at the transmitter includes retrieving a base ternary sequence having a pre-defined length, obtaining one or more ternary sequences corresponding to data to be transmitted and transmitting the obtained one or more ternary sequences by the transmitter. The method steps at the receiver includes receiving one or more ternary sequences corresponding to the data transmitted, demodulating each of the received ternary sequences by correlating with all cyclic shifts of the base ternary sequence by the receiver if the receiver is a coherent receiver, demodulating each of the received ternary sequences by correlating with all cyclic shifts of the absolute of the base ternary sequence by the receiver if the receiver is a non-coherent receiver and detecting the transmitted data based on the cyclic shifts corresponding to maximum correlation values.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: February 12, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sujit Jos, Chandrashekhar Thejaswi Ps, Kiran Bynam, Young Jun Hong, Chang Soon Park, Manoj Choudhary
  • Patent number: 10142067
    Abstract: A physical layer (PHY) data unit is received via an orthogonal frequency division multiplexing (OFDM) communication channel. The PHY data unit includes (i) a first set of one or more short OFDM symbols generated using a normal tone spacing and (ii) a second set of one or more long OFDM symbols generated using a reduced tone spacing, (iii) an OFDM symbol indicator indicative of a number of OFDM symbols in at least one of (a) the first set of OFDM symbols and (b) the second set of OFDM symbols; Based at least in part on the OFDM symbol indicator, (i) a number of short OFDM symbols in the set of one or more short OFDM symbols and (ii) a number of long OFDM symbols in the set of one or more long OFDM symbols are determined.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: November 27, 2018
    Assignee: Marvell World Trade Ltd.
    Inventors: Rui Cao, Xiayu Zheng, Hongyuan Zhang
  • Patent number: 10141917
    Abstract: Various techniques are provided to efficiently implement user designs in programmable logic devices (PLDs). In one example, a programmable logic device (PLD) includes a plurality of programmable logic blocks (PLBs) and at least first and second logic cells within at least one of the PLBs, where each logic cell includes a lookup table (LUT) and associated mode logic configured to receive a LUT output signal from the LUT. The associated mode logic is configured to use a single physical signal output to provide a logic cell output signal corresponding to a selected logic function operational mode, ripple arithmetic operational mode, or extended logic function operational mode for each logic cell.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: November 27, 2018
    Assignee: Lattice Semiconductor Corporation
    Inventors: Brad Sharpe-Geisler, Senani Gunaratna, Ting Yew
  • Patent number: 10056929
    Abstract: An antenna subsystem receives an analog desired signal, noise, and interference via a communication channel. The desired signal includes modulated encoded digital information. A local oscillator (LO) modulation subsystem generates a modulated LO. The LO modulation subsystem generates a modulated LO to maximize the symbol signal-to-noise ratio of the decoded digital information based on a plurality of: the desired signal, the interference and the noise expected in the communication channel, the characteristics of the converter, and the ability of the DSP to remove the Modulated LO from the converted signal. A mixer mixes the received signal and the modulated LO. A converter converts the mixed signal from analog to digital. A digital signal processor (DSP) removes the modulated LO and desired signal modulation, and decodes the desired signal encoded digital information.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: August 21, 2018
    Assignee: GOOGLE LLC
    Inventors: Mark Rich, Paul Kolodzy
  • Patent number: 10051687
    Abstract: The present document relates to a wireless communication system and, more particularly, to a method for transmitting a frame in a high-density wireless LAN system, and a station device for performing the method. To this end, a station for transmitting a frame is comprised of a radio frame for a second type station comprising a frame portion for a first type station and a frame portion for the second type station, wherein the frame portion for the first type station comprises a first OFDM symbol for transmitting a signaling field (L-SIG) for the first type station, and the frame portion for the second type station comprises one or more second OFDM symbols for transmitting a signaling field (HE-SIG) for the second type station. Additionally, the radio frame for the second type station further comprises one or more third OFDM symbols for transmitting the L-SIG and the HE-SIG repeatedly.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: August 14, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Dongguk Lim, Wookbong Lee, Jinyoung Chun, Jinsoo Choi, Hangyu Cho, Eunsung Park
  • Patent number: 10044476
    Abstract: A first set of orthogonal frequency domain multiplexing (OFDM) symbols for a first portion of a PHY data unit and a second set of OFDM symbols for a second portion of the PHY data unit are generated. OFDM symbols of the first set are generated with a first OFDM tone spacing. At least some OFDM symbols of the second set are generated with a second tone spacing different from the first tone spacing. A value for a length indicator indicative of a duration of the PHY data unit is determined based on the first tone spacing and the second tone spacing. The first portion of the PHY data unit is generated to include (i) the first set of OFDM symbols and (ii) the length indicator set to the determined value. The second portion of the PHY data unit is generated to include the second set of OFDM symbols.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: August 7, 2018
    Assignee: Marvell World Trade Ltd.
    Inventors: Rui Cao, Xiayu Zheng, Hongyuan Zhang