Quadrature Amplitude Modulation Patents (Class 375/298)
  • Patent number: 11456820
    Abstract: In accordance with embodiments, methods for data communications are disclosed. A device obtains a forward error correction (FEC) encoded bit stream. The device maps the FEC encoded bit stream to produce a set of symbols according to a bit-to-symbol mapping rule. The bit-to-symbol mapping rule comprises a first mapper bit position associated with a first mapper error protection level and a second mapper bit position associated with a second mapper error protection level. The first mapper error protection level is greater than the second mapper error protection level. The device then transmits the set of symbols in the communications system.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: September 27, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zeina Mheich, Lei Wen, Pei Xiao, Amine Maaref
  • Patent number: 11424832
    Abstract: An apparatus comprising a control circuit providing a variable control signal, and a transmitter. The transmitter operable to provide a modulated optical signal including a plurality of optical subcarriers. One of the plurality of optical subcarriers carries a sequence of modulation symbols. The sequence of modulation symbols includes modulation symbols that are output with a variable transmission frequency in accordance with a transmission probability distribution that is variable based on the control signal.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: August 23, 2022
    Assignee: Infinera Corporation
    Inventors: Steven William Beacall, Sumudu Geethika Edirisinghe
  • Patent number: 11394476
    Abstract: A control circuit, comprising a processor, and a computer readable medium is described. The computer readable medium stores logic that causes the processor to analyze performance data of a link carrying data encoded in a first modulation format with a degradation prediction algorithm to determine a predicted level of degradation of the link. The processor provides first control signals to a transmitter block, and second control signals to a receiver block based upon the predicted level of degradation of the link over time. The first control signals cause the transmitter block to encode data to be transmitted over the link in a second modulation format. The second control signals cause the receiver block to decode data received from the link using the second modulation format. The first and second modulation formats conform to requirements of a same m-quadrature amplitude modulation protocol.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: July 19, 2022
    Assignee: Infinera Corporation
    Inventors: Steven William Beacall, Sumudu Geethika Edirisinghe
  • Patent number: 11394504
    Abstract: Embodiments of the present disclosure relate to methods and apparatuses for uplink transmission without an uplink grant. In example embodiments, a method implemented in a terminal device in a communication system is presented. According to this method, the terminal device determines a redundancy version (RV) pattern for a plurality of uplink transmissions. The RV pattern indicates a plurality of RV indices. At least one RV index in the respective plurality of RV indices is periodic in the RV pattern. The terminal device determines coded bits to be transmitted in the plurality of uplink transmissions based at least in part on the RV pattern. The terminal device transmits the coded bits to the network device in at least one transmission of the plurality of uplink transmissions without an uplink grant.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: July 19, 2022
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Jingyuan Sun, Yuantao Zhang, Zhuyan Zhao, Hong Zhou
  • Patent number: 11349698
    Abstract: The present disclosure relates to modulation methods. One example method includes performing distribution matching (DM) encoding on N1 first bits to obtain N2 first symbols, determining N4 to-be-phase-modulated symbols whose signal powers are equal to a preset signal power from the N2 first symbols, performing phase modulation on the N4 to-be-phase-modulated symbols based on N3 second bits to obtain N4 second symbols, performing binary labeling (BL) encoding on the N4 second symbols and N2-N4 first symbols to obtain N5 BL encoded output bits, performing forward error correction (FEC) encoding on the N5 BL encoded output bits to obtain N6 FEC redundant bits, and performing quadrature amplitude modulation (QAM) mapping based on the N6 FEC redundant bits and the N5 BL encoded output bits to obtain N2 target QAM signals.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: May 31, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yuanda Huang, Kexin Xiao, Bin Xia
  • Patent number: 11271595
    Abstract: The present technology relates to a data processing device and a data processing method, which are capable of securing excellent communication quality in data transmission using an LDPC code. In group-wise interleave, an LDPC code in which a code length N is 64800 bits and an encoding rate r is 7/15, 9/15, 11/15, or 13/15 is interleaved in units of bit groups of 360 bits. In group-wise deinterleave, a sequence of the LDPC code that has undergone the group-wise interleave is restored to an original sequence. For example, the present technology can be applied to a technique of performing data transmission using an LDPC code.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: March 8, 2022
    Assignee: Saturn Licensing LLC
    Inventors: Ryoji Ikegaya, Makiko Yamamoto, Yuji Shinohara
  • Patent number: 11265086
    Abstract: Systems and methods for constellation shaping using low rate loss bit-level distribution matchers include receiving blocks of input bits and, for each input block of a predetermined size, assigning a respective codeword of a predetermined output block size. The number of bits of a given bit value in the codeword is dependent on a predetermined target probability distribution. A one-to-one mapping exists between each possible combination of input bits and a codeword for input blocks containing the combination. Some codewords include a number of bits having the given bit value that is different than the predetermined target probability distribution, but an average number of bits having the given bit value in the available codewords meets the predetermined target probability distribution. The disclosed methods result in more available codewords and a lower rate loss than in bit-level distribution matchers with a constant modulus, while achieving similar shaping.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: March 1, 2022
    Assignee: Fujitsu Limited
    Inventors: Inwoong Kim, Olga I. Vassilieva, Paparao Palacharla, Tadashi Ikeuchi
  • Patent number: 11265017
    Abstract: A modulator and a modulation method using a non-uniform 16-symbol signal constellation are disclosed. The modulator includes a memory and a processor. The memory receives a codeword corresponding to a low-density parity check (LDPC) code having a code rate of 4/15. The processor maps the codeword to 16 symbols of the non-uniform 16-symbol signal constellation on a 4-bit basis.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: March 1, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung-Ik Park, Sun-Hyoung Kwon, Jae-Young Lee, Heung-Mook Kim, Nam-Ho Hur
  • Patent number: 11233545
    Abstract: The present application discloses a method for operating a wireless communication system. The method includes receiving a series of input data bits in a current timeslot by a transmitter and encoding the input data bits with a cross-Gray coding scheme to obtain coded information bits. Additionally, the method includes mapping the coded information bits to obtain respective multiple transmission symbols Xt for the current timeslot in a constellation diagram. Furthermore, the method includes converting the multiple transmission symbols Xt to generate a space-time matrix St of the current timeslot by incorporating spatial bits associated with orders of respective transmitting antennas based on a space-time matrix St-1 of a previous timeslot. Moreover, the method includes transmitting a respective one of elements in the space-time matrix St using a respective one transmitting antenna activated in the transmitter.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: January 25, 2022
    Assignees: CHONGQING BOE SMART ELECTRONICS SYSTEM CO., LTD., BOE Technology Group Co., Ltd.
    Inventors: Yunyan Xie, Lichun Chen, Bo Liu, Qiangeng Cheng, Han Wang
  • Patent number: 11218173
    Abstract: A transmitting apparatus is provided. The transmitting apparatus includes: an encoder configured to generate a low-density parity check (LDPC) codeword by LDPC encoding of input bits based on a parity check matrix including information word bits and parity bits, the LDPC codeword including a plurality of bit groups each including a plurality of bits; an interleaver configured to interleave the LDPC codeword; and a modulator configured to map the interleaved LDPC codeword onto a modulation symbol, wherein the interleaver is further configured to interleave the LDPC codeword such that a bit included in a predetermined bit group from among the plurality of bit groups constituting the LDPC codeword onto a predetermined bit of the modulation symbol.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: January 4, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyung-Joong Kim, Se-ho Myung, Hong-sil Jeong, Daniel Ansorregui Lobete, Belkacem Mouhouche
  • Patent number: 11212158
    Abstract: A coding and modulation apparatus and method are presented. The apparatus comprises an encoder that encodes input data into cell words, and a modulator that modulates said cell words into constellation values of a non-uniform constellation. The modulator is configured to use, based on the total number M of constellation points of the constellation, the signal-to-noise ratio SNR and the number n of the dimension of the constellation, an n-dimensional non-uniform constellation from a group of constellations, wherein each constellation point of an n-dimensional constellation diagram is defined by an n-tupel of constellation values, said n-tupel of constellation values defining parameter settings of a transmission parameter used by a transmission apparatus for transmitting a transmission stream obtained by conversion of said constellation values.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: December 28, 2021
    Assignee: SONY CORPORATION
    Inventors: Nabil Sven Loghin, Reem Abdel-Rahman, Felix Fellhauer
  • Patent number: 11190214
    Abstract: The present disclosure relates to a device for generating a polar code xN of length N and dimension K on the basis of a transformation matrix GN of size N×N, wherein the transformation matrix GN is based on a first matrix GN, of size Nr×N, and on a second matrix GNd of size Nd×Nd, wherein N=Nr·Nd, and wherein the polar code xN is given by xN=uN·GN, wherein uN=(u0, . . . uN-1) is a vector of size N, an element ui, i=0, . . . N?1, of the vector corresponding to an information bit if i?I, I being a set of K information bit indices, and ui=0, if i?F, F being a set of N?K frozen bit indices.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: November 30, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Valerio Bioglio, Ingmar Land, Jean-Claude Belfiore, Frederic Gabry
  • Patent number: 11171692
    Abstract: Provided are a method and apparatus for transmitting a feedback frame by performing multi input multi output (MIMO) beamforming procedure in a wireless local area network (WLAN) system. Specifically, a first station (STA) generates the feedback frame based on the MIMO beamforming procedure. The first STA transmits the feedback frame to a second STA. The feedback frame includes a feedback subcarrier for a predetermined frequency band. A first subcarrier transmitted first in the feedback subcarrier and a second subcarrier having subcarrier indices ?2 and 2 are statically transmitted. The first subcarrier is configured as a left edge subcarrier or right edge subcarrier of the predetermined frequency band. A subcarrier index of a third subcarrier included in the feedback subcarrier is determined based on a grouping value which is a subcarrier interval. The third subcarrier is a subcarrier excluding the first subcarrier and the second subcarrier from the feedback subcarrier.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: November 9, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Sunwoong Yun, Jinmin Kim, Sungjin Park, Jinsoo Choi
  • Patent number: 11133833
    Abstract: Techniques for generating a power tracking supply voltage for a circuit (e.g., a power amplifier) are disclosed. The circuit may process multiple transmit signals being sent simultaneously on multiple carriers at different frequencies. In one exemplary design, an apparatus includes a power tracker and a power supply generator. The power tracker determines a power tracking signal based on inphase (I) and quadrature (Q) components of a plurality of transmit signals being sent simultaneously. The power supply generator generates a power supply voltage based on the power tracking signal. The apparatus may further include a power amplifier (PA) that amplifies a modulated radio frequency (RF) signal based on the power supply voltage and provides an output RF signal.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: September 28, 2021
    Assignee: QUALCOMM Incorporated
    Inventor: Alexander Dorosenco
  • Patent number: 11128516
    Abstract: Disclosed are a method and an apparatus for a constellation design based on stepped hierarchical modulation. According to the present invention, there is provided an apparatus for a constellation design based on stepped hierarchical modulation comprising a processor and a memory connected to the processor, wherein the memory stores program instructions to be executed by the processor so as to generate an initial constellation including M (M is a natural number) signal points based on stepped ?-QAM, set a constellation parameter to control a degree of data protection, move signal points located in an m-th quadrant by a preset distance in a preset direction by applying the constellation parameter to the initial constellation, and map information bits encoded in the moved signal points.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: September 21, 2021
    Assignee: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventors: Dongweon Yoon, Seongjin Ahn
  • Patent number: 11115070
    Abstract: A method for receiving a radiofrequency signal in a system having an emitter, a satellite and at least one characterization receiver implementing a characterization phase of the satellite. The method includes: transmitting to the emitter, over a first transmission link, at least one transmission command of at least one reference signal, receiving the at least one reference signal, emitted by the emitter over a second transmission link via the satellite, termed the received signal, estimating at least one distortion generated by the satellite, from the at least one reference signal, delivering at least one piece of information on compensation of the distortions affecting the received signal, and transmitting to the emitter, over the first transmission link, the at least one piece of distortion compensation information.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: September 7, 2021
    Assignee: ENENSYS TEAMCAST
    Inventors: Olivier Rousset, Cyril Bernier
  • Patent number: 11075656
    Abstract: Disclosed in some examples are methods, systems, devices, and machine-readable mediums which optimize one or more metrics of a communication system by intentionally changing symbols in a bitstream after encoding by an error correction coder, but prior to transmission. The symbols may be changed to meet a communication metric optimization goal, such as decreasing a high PAPR, reducing an error rate, reducing an average power level (to save battery), or altering some other communication metric. The symbol that is intentionally changed is then detected by the receiver as an error and corrected by the receiver utilizing the error correction coding.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: July 27, 2021
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Amer Aref Hassan, Roy D. Kuntz
  • Patent number: 11075713
    Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: July 27, 2021
    Assignee: Intel Corporation
    Inventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
  • Patent number: 11063609
    Abstract: One coding scheme is selected from a plurality of coding schemes, an information sequence is encoded by using the selected coding scheme, and an obtained encoded sequence is modulated to obtain a modulated signal. The obtained modulated signal is subjected to a phase change and is transmitted. The plurality of coding schemes include at least a first coding scheme and a second coding scheme. The first coding scheme is a coding scheme with a first coding rate for forming a generated first codeword as a first encoded sequence by using a first parity check matrix. The second coding scheme is a coding scheme with a second coding rate obtained after puncturing processing, for generating a second encoded sequence by performing the puncturing processing on a generated second codeword by using a second parity check matrix different from the first parity check matrix. The number of bits of the first encoded sequence is equal to the number of bits of the second encoded sequence.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: July 13, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 11038633
    Abstract: Provided is a radio communication device which can make Acknowledgement (ACK) reception quality and Negative Acknowledgement (NACK) reception quality to be equal to each other. The device includes: a scrambling unit (214) which multiplies a response signal after modulated, by a scrambling code “1” or “e?j(?/2)” so as to rotate a constellation for each of response signals on a cyclic shift axis; a spread unit (215) which performs a primary spread of the response signal by using a Zero Auto Correlation (ZAC) sequence set by a control unit (209); and a spread unit (218) which performs a secondary spread of the response signal after subjected to the primary spread, by using a block-wise spread code sequence set by the control unit (209).
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: June 15, 2021
    Assignee: Panasonic Corporation
    Inventors: Seigo Nakao, Daichi Imamura
  • Patent number: 10996075
    Abstract: Microelectromechanical systems (MEMS) gyroscopes and related measurement and calibration techniques are described. Various embodiments facilitate phase estimation of an ideal phase for a demodulator mixer associated with an exemplary MEMS gyroscope using quadrature tuning, which can improve offset performance over life time for exemplary MEMS gyroscopes. Exemplary embodiments can comprise adjusting a quadrature component of an exemplary MEMS gyroscope sense signal, measuring a change in offset of the exemplary MEMS gyroscope at an output of a demodulator mixer associated with the exemplary MEMS gyroscope, estimating a phase error between the quadrature component and a demodulation phase angle of the demodulator mixer based on the change in the offset, and periodically adjusting the demodulation phase angle of the demodulator mixer based on the phase error.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: May 4, 2021
    Assignee: INVENSENSE, INC.
    Inventors: Sriraman Dakshinamurthy, Doruk Senkal, Ali Shirvani, Ronak Chetan Desai, Carlo Pinna
  • Patent number: 10999002
    Abstract: A method of determining a modulation and coding scheme includes: acquiring UCI transmitted by UE, the UCI including at least a CQI index; determining whether the CQI index belongs to a CQI compression index representing at least two modulation and coding schemes; when the CQI index belongs to the CQI compression index, determining a modulation and coding scheme represented by the CQI compression index according to preset CQI compression index indication information; and determining modulation and coding configuration information for the UE according to the modulation and coding scheme, and transmitting the modulation and coding configuration information to the UE. By adopting the method of determining the modulation and coding scheme, a higher-order modulation and coding scheme may be configured for the UE based on a relevant CQI index to reduce calculation amount during analyzing the modulation and coding scheme.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: May 4, 2021
    Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
    Inventors: Juejia Zhou, Yajun Zhu, Ming Zhang
  • Patent number: 10979081
    Abstract: Apparatus and methods are provided for polar code sub-block interleaving and bit selection. In one novel aspect, middle-part interlaced sub-block interleaving is provided for polar code interleaving. In one embodiment, the middle part of the polar code is interlaced and generates the interleaved polar code. In another embodiment, the lower part and the upper part are also sub-block interleaved with the middle-part interlaced method. In another novel, rate-dependent unified bit selection is provided. The bit selection is categorized into three operation categories of repetition, puncturing and the shortening. Each category follows unified bit selection rule with different categories differ only in the access scheme. In one embodiment, the circular buffer is used for bit selection.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: April 13, 2021
    Assignee: MediaTek INC.
    Inventors: Wei-De Wu, Chia-Wei Tai
  • Patent number: 10944517
    Abstract: For communication utilizing polar codes, a hybrid automatic repeat request algorithm utilizing incremental redundancy (HARQ-IR) may provide increased throughput by including new data, not based on an original transmission, in a HARQ retransmission. The number of retransmitted bits and new information bits in each HARQ retransmission may be controlled in order to manage a tradeoff between increased throughput and a decreased block error rate (BLER).
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: March 9, 2021
    Assignee: Qualcomm Incorporated
    Inventors: Jian Li, Changlong Xu, Jilei Hou, Neng Wang, Chao Wei
  • Patent number: 10903947
    Abstract: A data alignment method capable of preventing degradation in demodulation performance due to variation in signal qualities when a data signal to which a Turbo code is applied is transmitted simultaneously from a plurality of cells. The method divides signal components to be used for data alignment into resources common to all the cells and resources dependent on the cells and transmits encoded and rate-matched data with the first half thereof aligned to the resources common to all the cells and the second half thereof aligned to the resources dependent on the cells.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: January 26, 2021
    Assignee: Sun Patent Trust
    Inventors: Masayuki Hoshino, Seigo Nakao, Daichi Imamura
  • Patent number: 10897323
    Abstract: According to some embodiments, a method for use in a wireless transmitter of encoding a transport block comprises, upon determining a code rate for transmitting a transport block is less than or equal to R_threshold (R_threshold is between 1/5 and 1/3), selecting new radio (NR) low-density parity-check (LDPC) base graph 2 for encoding the transport block. The method further comprises encoding the transport block using the selected base graph and transmitting the encoded transport block to a wireless receiver.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: January 19, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Sara Sandberg, Mattias Andersson, Yufei Blankenship, Amirpasha Shirazinia
  • Patent number: 10887777
    Abstract: A method and device for data transmission in a wireless communication network are disclosed. The method includes that: a data regularity of data in a transmitted data packet is acquired; a subsequent sending manner and corresponding receiving manner for the data having the data regularity are determined; and the data having the data regularity is sent according to the determined sending manner.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: January 5, 2021
    Inventors: Qian Dai, Shuqiang Xia
  • Patent number: 10873488
    Abstract: Wireless communications systems and methods related to intra-packet rate adaptation are provided. A first wireless communication device communicates, with a second wireless communication device, an intra-packet modulation coding scheme (MCS) switching configuration. The first wireless communication device receives, from the second wireless communication device, a communication signal including a first data packet based on the intra-packet MCS switching configuration. The first data packet includes at least a first portion encoded by a first MCS and a second portion encoded by a second MCS different from the first MCS.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: December 22, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Tuhin Subhra Chakraborty, Rajat Sapra, Karthik Muralidhar, Hari Krishna Boddapati, Swaroop Venkatesh, Ashutosh Deepak Gore
  • Patent number: 10855510
    Abstract: Apparatuses, systems, and methods are described concerning a new type of superposition multiplexing transmission constellation (super-constellation): the Gray-mapped Non-uniform-capable Constellation (GNC). Apparatuses, systems, and methods for generating GNC super-constellations are described, as well as apparatuses, systems, and methods for receiving, demapping, and decoding transmissions using GNC super-constellations. Apparatuses, systems, and methods for selecting a type of superposition multiplexing transmission constellation based on various conditions are also described.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: December 1, 2020
    Inventors: Hyukjoon Kwon, Linbo Li, Jungwon Lee, Sandeep Krishnamurthy
  • Patent number: 10848267
    Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: November 24, 2020
    Assignee: Intel Corporation
    Inventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
  • Patent number: 10834633
    Abstract: This application relates to the field of communications technologies, and discloses a transport block generation method and apparatus. The method includes: determining a TBS based on an MCS of a receiving device, a resource characteristic of an RB allocated to the receiving device, and a quantity of symbols, where the quantity of symbols is a quantity of symbols included in each RB, and each RB includes a same quantity of symbols; and generating a TB based on a TBS. TBS is determined based on the MCS of the receiving device, a quantity of RBs allocated to the receiving device, and the quantity of symbols included in the RB, and the TB is generated based on the determined TBS. The quantity of symbols included in the RB is considered in determining the TBS. Therefore, the determined TBS may vary with the quantity of symbols included in the RB.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: November 10, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Shibin Ge, Xiaoyan Bi, Dageng Chen
  • Patent number: 10813111
    Abstract: Devices, systems, and methods for scheduling resources in a wireless network are configured to perform operations including identifying one or more resources that are available for low-priority transmissions from an internet-of-things (IoT) device, determining that the available resources are non-contiguous, rescheduling scheduled resources until the available resources are contiguous, and scheduling the low-priority transmissions using the available resources.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: October 20, 2020
    Assignee: Sprint Spectrum L.P.
    Inventors: Nagi A Mansour, Kevin Hart, Aneesha Sridhar, Tzuo-Shuo Li
  • Patent number: 10778254
    Abstract: A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 64800 and a code rate of 3/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for 64-symbol mapping.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: September 15, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung-Ik Park, Sun-Hyoung Kwon, Jae-Young Lee, Heung-Mook Kim, Nam-Ho Hur
  • Patent number: 10749725
    Abstract: Apparatuses, systems, and methods are described concerning a new type of superposition multiplexing transmission constellation (super-constellation): the Gray-mapped Non-uniform-capable Constellation (GNC). Apparatuses, systems, and methods for generating GNC super-constellations are described, as well as apparatuses, systems, and methods for receiving, demapping, and decoding transmissions using GNC super-constellations. Apparatuses, systems, and methods for selecting a type of superposition multiplexing transmission constellation based on various conditions are also described.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: August 18, 2020
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hyukjoon Kwon, Linbo Li, Jungwon Lee, Sandeep Krishnamurthy
  • Patent number: 10707903
    Abstract: The present technology relates to a data processing device and a data processing method, which are capable of securing excellent communication quality in data transmission using an LDPC code. In group-wise interleave, an LDPC code in which a code length N is 64800 bits and an encoding rate r is 7/15, 9/15, 11/15, or 13/15 is interleaved in units of bit groups of 360 bits. In group-wise deinterleave, a sequence of the LDPC code that has undergone the group-wise interleave is restored to an original sequence. For example, the present technology can be applied to a technique of performing data transmission using an LDPC code.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: July 7, 2020
    Assignee: Saturn Licensing LLC
    Inventors: Ryoji Ikegaya, Makiko Yamamoto, Yuji Shinohara
  • Patent number: 10700705
    Abstract: Embodiments of this application disclose encoding and decoding methods and apparatus related to the communications. One of the methods includes: obtaining, based on polar code rate matching, a subchannel corresponding to a punctured bit or a shortened bit; determine subchannels corresponding to an information bit and a check frozen bit that are different from the subchannel corresponding to the punctured bit or the shortened bit; determining that a subchannel corresponding to a frozen bit that is different from the subchannels corresponding to the information bit and the check frozen bit and the subchannel corresponding to the punctured bit or the shortened bit; performing, according to the subchannels corresponding to the information bit and the check frozen bit and the subchannel corresponding to the frozen bit, parity check encoding and polar encoding based on the information bit to obtain encoded information; and sending the encoded information.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: June 30, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yue Zhou, Rong Li, Hejia Luo, Huazi Zhang, Ying Chen
  • Patent number: 10700803
    Abstract: A method for data transmission by a device in a communication system includes modulating a first data stream using a codebook to produce a second data stream, wherein the codebook is in correspondence with a multi-dimensional modulation map that includes a number of distinct projections per complex dimension that is smaller than a number of modulation points of the multi-dimensional modulation map, and transmitting the second data stream over allocated resources in the communication system.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: June 30, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Mahmoud Taherzadeh Boroujeni, Alireza Bayesteh, Hosein Nikopour, Mohammadhadi Baligh
  • Patent number: 10680873
    Abstract: A transmitting apparatus is disclosed. The transmitting apparatus includes an encoder to perform channel encoding with respect to bits and generate a codeword, an interleaver to interleave the codeword, and a modulator to map the interleaved codeword onto a non-uniform constellation according to a modulation scheme, and the constellation may include constellation points defined based on various tables according to the modulation scheme.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: June 9, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Belkacem Mouhouche, Daniel Ansorregui Lobete, Hong-sil Jeong
  • Patent number: 10673563
    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: September 13, 2018
    Date of Patent: June 2, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xi Yan, Huixiao Ma, Wai Kong Raymond Leung, Long Luo, Yan Cui
  • Patent number: 10659080
    Abstract: The present technology relates to a data processing device and a data processing method capable of securing excellent communication quality in data transmission using an LDPC code. In group-wise interleave, an LDPC code having a code length N of 64800 bits and a coding rate r of 9/15, 11/15, or 13/15 is interleaved in units of bit groups of 360 bits. In group-wise deinterleave, a sequence of LDPC codes after the group-wise interleave is returned to an original sequence. The present technology, for example, can be applied to a case where data transmission using an LDPC code or the like is performed.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: May 19, 2020
    Assignee: Saturn Licensing LLC
    Inventors: Ryoji Ikegaya, Makiko Yamamoto, Yuji Shinohara
  • Patent number: 10601544
    Abstract: Aspects of the disclosure provide an apparatus that includes transmitting circuit and processing circuit. The transmitting circuitry is configured to transmit wireless signals. The processing circuitry is configured to encode a set of information bits with a code that is configured for incremental redundancy to generate a code word that includes the information bits and parity bits, buffer the code word in a circular buffer, determine a start position in the circular buffer based on a redundancy version that is selected from a plurality of redundancy versions based on a scenario evaluation of a previous transmission associated with the set of information bits, and transmit, via the transmitting circuitry, a selected portion of the code word from the start position.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: March 24, 2020
    Assignee: MEDIATEK INC.
    Inventors: Chong-You Lee, Cheng-Yi Hsu, Maoching Chiu, Timothy Perrin Fisher-Jeffes, Ju-Ya Chen, Yen Shuo Chang, Wei Jen Chen
  • Patent number: 10567994
    Abstract: Embodiments of the application provide a method for transmitting data in a wireless communication network. A device of the network receives a bit sequence of K information bits. The device polar codes the bit sequence to obtain a first encoded sequence, wherein a length of the first encoded sequence is N, and N is greater than or equal to K. The device block interleaves the first encoded sequence to obtain an interleaved bit sequence. The device determines a transmission code rate R. When the transmission code rate R is less than the code rate threshold, the device outputs a second bit sequence. The length of the second bit sequence is M, M is smaller than N. The second bit sequence is punctured from the interleaved bit sequence by removing (N?M) bits from beginning of the interleaved bit sequence.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: February 18, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Gongzheng Zhang, Yourui HuangFu, Lingchen Huang, Ying Chen, Yunfei Qiao, Rong Li
  • Patent number: 10554271
    Abstract: A transmission apparatus that (i) generates a Quadrature Phase Shift Keying (QPSK) modulation signal s1(t) by applying a QPSK modulation scheme to a first data sequence, (ii) generates a 16-Quadrature Amplitude Modulation (QAM) modulation signal s2(t) by applying a 16-QAM modulation scheme to a second data sequence, (iii) generates a transmission signal z1(t) and a second transmission signal z2(t) by applying a phase hopping process, a precoding process, and a power adjust process to the QPSK modulation signal s1(t) and the 16-QAM modulation signal s2(t), wherein an average transmission power of the 16-QAM modulation signal s2(t) being the same as an average transmission power of the QPSK modulation signal s1(t), and (iv) transmits the transmission signal z1(t) from a first antenna at a first time and a first frequency and the second transmission signal z2(t) from a second antenna at the first time and the first frequency.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: February 4, 2020
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10547479
    Abstract: Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)? obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: January 28, 2020
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Yutaka Murakami, Kiyotaka Kobayashi, Masayuki Orihashi, Akihiko Matsuoka
  • Patent number: 10541853
    Abstract: A transmitting apparatus is disclosed. The transmitting apparatus includes an encoder to perform channel encoding with respect to bits and generate a codeword, an interleaver to interleave the codeword, and a modulator to map the interleaved codeword onto a non-uniform constellation according to a modulation scheme, and the constellation may include constellation points defined based on various tables according to the modulation scheme.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: January 21, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Se-ho Myung, Belkacem Mouhouche, Daniel Ansorregui Lobete, Kyung-joong Kim, Hong-sil Jeong
  • Patent number: 10536173
    Abstract: A transmitting apparatus is disclosed. The transmitting apparatus includes an encoder to perform channel encoding with respect to bits and generate a codeword, an interleaver to interleave the codeword, and a modulator to map the interleaved codeword onto a non-uniform constellation according to a modulation scheme, and the constellation may include constellation points defined based on various tables according to the modulation scheme.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: January 14, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Se-ho Myung, Belkacem Mouhouche, Daniel Ansorregui Lobete, Kyung-joong Kim, Hong-sil Jeong
  • Patent number: 10483653
    Abstract: An apparatus includes a switching circuit and a plurality of registers. The switching circuit may be configured to generate a sequence of pulses in a plurality of control signals in response to a plurality of cycles of an enable signal. The registers may be hardwired as a plurality of subsets. Each of the subsets of the registers may be configured to (a) buffer a plurality of setting values received from a memory and (b) present the setting values from the registers to a plurality of transceiver circuits while a corresponding one of the control signals is in an active state. The transceiver circuits may be updated with the setting values from the registers within a predetermined time.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: November 19, 2019
    Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.
    Inventors: Samet Zihir, Tumay Kanar, Naveen Krishna Yanduru
  • Patent number: 10476720
    Abstract: A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: November 12, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10461974
    Abstract: This application provides a multichannel-based signal transmission method and apparatus. The method includes: combining N groups of lower-order modulation symbols into N groups of higher-order modulation symbols, where an ith higher-order modulation symbol in each group of higher-order modulation symbols is obtained by combining ith lower-order modulation symbols in all the N groups of lower-order modulation symbols, each group of lower-order modulation symbols includes M lower-order modulation symbols, i=1, 2, . . . , M, N is a positive integer greater than 1, and M is a positive integer greater than 1; determining N to-be-sent signals based on the N groups of higher-order modulation symbols; and sending a kth to-be-sent signal in the N to-be-sent signals by using a kth channel in N channels, where k=1, 2, . . . , N.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: October 29, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Tao Wu, Teyan Chen
  • Patent number: 10440606
    Abstract: Embodiments of the application provide a method for transmitting data in a wireless communication network. A device of the network receives a bit sequence of K information bits. The device polar codes the bit sequence to obtain a first encoded sequence, wherein a length of the first encoded sequence is N, and N is greater than or equal to K. The device block interleaves the first encoded sequence to obtain an interleaved bit sequence. The device determines a transmission code rate R. When the transmission code rate R is less than the code rate threshold, the device outputs a second bit sequence. The length of the second bit sequence is M, M is smaller than N. The second bit sequence is punctured from the interleaved bit sequence by removing (N?M) bits from beginning of the interleaved bit sequence.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: October 8, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Gongzheng Zhang, Yourui HuangFu, Lingchen Huang, Ying Chen, Yunfei Qiao, Rong Li