Quadrature Amplitude Modulation Patents (Class 375/298)
  • Patent number: 10312950
    Abstract: Methods, systems, and apparatuses are disclosed for transmitting a plurality of bits to an access point (AP) and receiving constellation symbol from the AP. A constellation symbol may include a plurality of indications of bits. Each indication of the plurality of indications of bits may be associated with a respective wireless transmit/receive unit (WTRU) of a plurality of WTRUs. The plurality of indications of bits may include indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: June 4, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Fengjun Xi, Yuan Sheng Jin, Pengfei Xia, Oghenekome Oteri, Hanqing Lou, Nirav B. Shah, Robert L. Olesen
  • Patent number: 10312941
    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 based on a parity check matrix; an interleaver configured to interleave the LDPC codeword; and a modulator configured to map the interleaved LDPC codeword onto a modulation symbol, wherein the modulator is further configured to map a bit included in a predetermined bit group from among a plurality of bit groups constituting the LDPC codeword onto a predetermined bit of the modulation symbol.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: June 4, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Se-ho Myung, Hong-sil Jeong, Kyung-joong Kim
  • Patent number: 10305570
    Abstract: For example, a wireless station may be configured to modulate a plurality of data bit sequences into a plurality of constellation points in first and second spatial streams according to a DCM, a data bit sequence of the plurality of data bit sequences includes a sequence of a plurality of data bits, modulating the plurality of data bit sequences includes modulating the sequence of the plurality of data bits into a first constellation point in the first spatial stream and a second constellation point in the second spatial stream, the second constellation point is a complex conjugate of the first constellation point; and to transmit an OFDM transmission over a wireless communication channel in a frequency band above 45 GHz, the OFDM transmission based on the plurality of constellation points in the first and second spatial streams.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: May 28, 2019
    Assignee: INTEL CORPORATION
    Inventors: Artyom Lomayev, Alexander Maltsev, Michael Genossar, Carlos Cordeiro
  • Patent number: 10305718
    Abstract: Methods and apparatuses for processing a signal that is transmitted with a reduced peak to average power ratio are described. The processing includes applying (1650) a first type of symbol constellation extension projection to at least one symbol in the constellation if it is determined that a type of constellation is a non-square constellation, the first type of symbol constellation extension projection having an outward angular region from an original position for the at least one symbol in the constellation, the outward angular region defined by a value for an angle between a first boundary and a second boundary for the outward angular region.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: May 28, 2019
    Assignee: INTERDIGITAL CE PATENT HOLDINGS
    Inventors: Loic Fontaine, Anthony Pesin
  • Patent number: 10284229
    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: September 15, 2017
    Date of Patent: May 7, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung-Ik Park, Sun-Hyoung Kwon, Jae-Young Lee, Heung-Mook Kim, Nam-Ho Hur
  • Patent number: 10277436
    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: February 22, 2018
    Date of Patent: April 30, 2019
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Yutaka Murakami, Kiyotaka Kobayashi, Masayuki Orihashi, Akihiko Matsuoka
  • Patent number: 10271337
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention relates to method and apparatus for performing a decoding with low complexity in a wireless communication system. A decoding method of a terminal in a wireless communication system comprises determining a first characteristic value indicating a statistical characteristic of an interference signal based on a received signal of a base station, determining a second characteristic value indicating a statistical characteristic of an interference signal based on data received from the base station, and decoding the data according to a decoding scheme corresponding to a difference of the first characteristic value and the second characteristic value.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: April 23, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min Sagong, Woo-Myoung Park, Seok-Ki Ahn, Chi-Woo Lim, Sung-Nam Hong
  • Patent number: 10250426
    Abstract: A method for transmitting broadcast signals, the method includes encoding service data based on a code rate; mapping the encoded service data into constellations based on a modulation order; MIMO (Multi Input Multi Output) processing a pair of symbols of the mapped service data using MIMO precoding, wherein the MIMO precoding is based on at least one of phase-hopping matrix with a phase rotation angle and a rotation matrix with a rotation angle, wherein a value of the rotation angle depends on the modulation order and the code rate, and wherein when the modulation order is NUC 16 Quadrature Amplitude Modulation (QAM) and the code rate is one of 2/15, 3/15, 4/15, 5/15, the value of the rotation angle is zero (0) degrees; time-interleaving the MIMO processed service data; building signal frames including the time-interleaved service data; modulating data in the signal frames by an OFDM (Orthogonal Frequency Division Multiplex) scheme.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: April 2, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Jinyong Choi, Woosuk Ko, Sangchul Moon, Sungryong Hong
  • Patent number: 10237103
    Abstract: Aspects provide for selecting a precoder mode for a transmission, changing a cyclic prefix (CP) length based on the selected precoder mode, and transmitting a signal that includes the changed CP length. Changing the CP length may involve using the selected precoder mode to lookup a value by which to change a nominal CP length. After changing the CP length, information indicating the changed CP length may be transmitted to a receiver of the signal. Precoder mode selection may be based on feedback information that indicates whether a receiver requests a change to the CP length. Precoder mode selection may be based on a received reference signal that indicates a condition of a communication channel. The reference signal may be used to select the precoder mode that results in the smallest relative delay spread, the largest relative delay spread compression, the largest relative beamforming gain, and/or the largest relative throughout.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: March 19, 2019
    Assignee: QUALCOM Incorporated
    Inventors: Alexandros Manolakos, Tingfang Ji, June Namgoong, Joseph Binamira Soriaga
  • Patent number: 10230400
    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 4/15. 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: January 9, 2017
    Date of Patent: March 12, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung-Ik Park, Sun-Hyoung Kwon, Jae-Young Lee, Heung-Mook Kim, Nam-Ho Hur
  • Patent number: 10224964
    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 16200 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 16-symbol mapping.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: March 5, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung-Ik Park, Sun-Hyoung Kwon, Bo-Mi Lim, Jae-Young Lee, Heung-Mook Kim, Nam-Ho Hur
  • Patent number: 10212020
    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: January 15, 2016
    Date of Patent: February 19, 2019
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hyukjoon Kwon, Linbo Li, Jungwon Lee, Sandeep Krishnamurthy
  • Patent number: 10171204
    Abstract: Aspects of the disclosure provide a method for polar code puncturing. The method can include receiving a mother polar code including a sequence of coded bits, the sequence of coded bits having indices {0, . . . , N?1} and including at least a first block of coded bits having indices {0, . . . , i?1}, a second block of coded bits having indices {i, . . . , i+k?1}, a third block of coded bits having indices {i+k, . . . , i+k+k?1}, interleaving the second block of coded bits with the third block of coded bits to form a rearranged sequence of coded bits including the N coded bits, and extracting the last M coded bits from the rearranged sequence of coded bits to generate a punctured code having a length of M.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: January 1, 2019
    Assignee: MEDIATEK INC.
    Inventors: Wei-De Wu, Mao-Ching Chiu
  • Patent number: 10158451
    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 23, 2017
    Date of Patent: December 18, 2018
    Assignee: Intel Corporation
    Inventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
  • Patent number: 10142147
    Abstract: The present invention provides a method of transmitting broadcast signals, the method including, encoding service data, building at least one signal frame by mapping the encoded service data, modulating data in the built at least one signal frame by an Orthogonal Frequency Division Multiplexing, OFDM, scheme and transmitting the broadcast signals having the modulated data.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: November 27, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Sangchul Moon, Woosuk Ko, Sungryong Hong, Jinwoo Kim, Jongwoong Shin
  • Patent number: 10136418
    Abstract: A method for uplink (UL) wireless backhaul communication at a wireless backhaul remote unit in a radio access network comprising receiving a configuration for radio frames and a transmission schedule through a downlink (DL) physical layer broadcast channel, wherein the transmission schedule comprises a transmission allocation for the remote unit, generating a UL data frame, wherein generating the UL data frame comprises performing forward error correction (FEC) encoding on a data bit stream to generate a plurality of FEC codewords, wherein performing the FEC encoding comprises performing Reed Solomon (RS) encoding on the data bit stream to generate a plurality of RS codewords, performing byte interleaving on the RS codewords, and performing Turbo encoding on the byte interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from more than one RS codeword, and transmitting the UL data frame according to the transmission allocation.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: November 20, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: June Chul Roh, Pierre Bertrand, Srinath Hosur, Vijay Pothukuchi, Mohamed Farouk Mansour
  • Patent number: 10063303
    Abstract: An apparatus includes a switching circuit and a plurality of registers. The switching circuit may be configured to generate a plurality of control signals in response to an enable signal. One control signal at a time may be active while the enable signal is in a transfer state. The registers may be configured to (i) buffer a plurality of setting values received from a memory and (ii) present the setting values from a subset of the registers to a plurality of transceiver circuits while a corresponding control signal is active. The setting values may include a plurality of phase values and a plurality of gain values used in the transceiver circuits to steer a radio frequency beam. Each transceiver channel may update the setting values from the registers within a predetermined time after a corresponding control signal becomes active.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: August 28, 2018
    Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.
    Inventors: Samet Zihir, Tumay Kanar, Naveen Krishna Yanduru
  • Patent number: 10063289
    Abstract: A method for transmitting broadcast signals encodes service data corresponding to each of a plurality of physical paths and time interleaves the encoded service data by using each Time Interleaving (TI) block in an interleaving frame. In the time interleaving, each TI block includes a number of actual Forward Error Correction (FEC) blocks having the encoded service data, and further includes a number of virtual FEC blocks equal to a difference between the number of actual FEC blocks of each TI block and a maximum number of actual FEC blocks. The time interleaving is performed by acquiring a cell position by using a row index, a column index and a twisting parameter, and when the acquired cell position is corresponding to a virtual cell in the number of virtual FEC blocks, the acquired cell position is skipped during a reading operation of the time interleaving.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: August 28, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jongseob Baek, Woosuk Ko, Sungryong Hong
  • Patent number: 10020913
    Abstract: Disclosed in an embodiment of the present invention are a polar code encoding method and device, the method comprising: utilizing a common information bit set to represent each of m polar code blocks, the polar codes in each polar code block having the same code length and different code rates, and m being greater than or equal to 2; according to the common information bit set corresponding to the polar code block, acquiring an information bit set corresponding to each polar code in the polar code block; and according to the information bit set corresponding to each polar code in the polar code block, conducting polar code encoding on information to be encoded, thus reducing polar code representation overhead, and solving the problem in the prior art of excessively high polar code representation overhead.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: July 10, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Hui Shen, Bin Li, Jun Chen
  • Patent number: 9998319
    Abstract: Disclosed are a method for transferring control information, a transmitting device and a receiving device, the method includes that: a transmitting end orderly selects an element yn or two elements y2m?1, y2m, from a sequence Y to be modulated corresponding to control information B newly added, then it selects pairing elements x2p?1, x2p from a sequence X to be modulated corresponding to related control information A, and groups yn or y2m?1, y2m and the x2p?1, x2p into an element group (x2p?1, x2p, yn) or (x2p?1, x2p, y2m?1, y2m) and maps (x2p?1, x2p, yn) or (x2p?1, x2p, y2m?1, y2m) as specified constellation points of a specified constellation diagram, and takes the constellation points as modulation symbols; it takes each two elements in the elements of the sequence X which are not used for pairing as an element group to perform QPSK modulation, modulating into QPSK modulation symbols; and it maps the constellation points and the QPSK modulation symbols to part of or all resources occupied by a correspondin
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: June 12, 2018
    Assignee: ZTE Corporation
    Inventors: Shuqiang Xia, Jing Shi, Jin Xu, Jun Xu, Peng Hao, Chunli Liang, Bo Dai
  • Patent number: 9992656
    Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. The method for transmitting broadcast signals includes encoding data of PLPs (Physical Layer Pips); building at least one signal frame by mapping the encoded data of the PLPs; and modulating data in the built signal frame by OFDM (Orthogonal Frequency Division Multiplexing) method and transmitting the broadcast signals having the modulated data.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: June 5, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Woochan Kim, Sungryong Hong, Woosuk Ko, Jaeho Hwang, Byounggill Kim, Jaehyung Kim
  • Patent number: 9979584
    Abstract: The present disclosure provides a transmission method comprising splitting a block of bits to be transmitted into a number of groups each consisting of k+2q bits, wherein k and q are natural numbers and each of the groups includes a subgroup consisting of k bits and two subgroups each consisting of q bits and performing 2q-ary QAM modulation on the subgroups of q bits from the groups of k+2q bits to obtain QAM symbols, respectively. The QAM symbols are processed so that two QAM symbols obtained from the two subgroups of q bits in each of the groups of k+2q bits are mapped onto at least two antennas as consecutive processed symbols. Through the use of 2k-ary FSK modulation, a frequency tone to which the two consecutive processed symbols are allocated is selected according to the subgroup of k bits from each of the groups of k+2q bits before transmission.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: May 22, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Jianfeng Wang
  • Patent number: 9967060
    Abstract: A transmission method and an FBMC transmitter to transmit at least a first and a second block of symbols (X0, X1), each symbols block including a temporal sequence of L vectors with predetermined size N. It uses a first and a second FBMC modulation channel, each FBMC modulation channel being associated with an antenna. During a first use of the channel, the vectors of the first block and the vectors of the second block are input to the first and to the second FBMC modulation channels respectively, in the order of the temporal sequence. During a second use of the channel, the vectors of the first and second blocks are multiplied by a factor jL 1 respectively and ?(jL 1) input to the second and to the first FBMC modulation channels respectively, in the inverse order of the temporal sequence.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: May 8, 2018
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Jean-Baptiste Dore
  • Patent number: 9941976
    Abstract: A high data rate, high sensitivity, low power optical link using low-bandwidth components and low-bandwidth E/O drivers and receivers and method of building same. The method is based on the idea of making the optical part of the link look like a bandwidth limited lossy electrical channel, so that the powerful equalization methods used in the wireline electrical links can be applied to recover the transmitted data in a situation with low bandwidth and/or high loss and strong inter-symbol interference. Linear and non-linear optical channel components, E/O drivers and receivers can benefit from the apparatus and the methods of the invention.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: April 10, 2018
    Assignee: Elenion Technologies, LLC
    Inventors: Alexander Rylyakov, Richard Younce, Ran Ding, Peter D. Magill, Hao Li, Michael J. Hochberg
  • Patent number: 9876512
    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 2/15. 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 16-symbol mapping.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: January 23, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung-Ik Park, Sun-Hyoung Kwon, Jae-Young Lee, Heung-Mook Kim, Nam-Ho Hur
  • Patent number: 9854412
    Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals, the apparatus comprises an encoder to encode service data, a mapper to map the encoded service data into constellations, a MIMO (Multi Input Multi Output) processor to process a pair of symbols of the mapped service data based on a rotation matrix with a rotation angle, a frame builder to build signal frames including the MIMO processed service data, a modulator to modulate data in the signal frames by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter to transmit the broadcast signals having the modulated data.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: December 26, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Jinyong Choi, Woosuk Ko, Sangchul Moon, Sungryong Hong
  • Patent number: 9832052
    Abstract: A modulation scheme for use in a digital mobile radio communications system. The modulation scheme uses a four slot time-division multiple access scheme with 12.5 kHz channels. Each 12.5 kHz channel contains plural sub-carriers and each sub-carrier is modulated with a modulation scheme that encodes at least 4 bits per symbol. The modulation scheme can be used in a standalone mobile radio communications system, or in a hybrid mobile radio communications system that also uses standard TETRA modulation schemes.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: November 28, 2017
    Assignee: SEPURA PLC
    Inventors: Peter Stephens, Paul Nodar
  • Patent number: 9819530
    Abstract: Methods and systems for communication with an optimized constellation include coding an input data stream to a symbol stream according to an optimized constellation that has a non-Gray bit mapping and that has neighboring points having more than one bit difference farther apart than neighboring points having one bit difference. The symbol stream is modulated onto a transmission signal and subsequently demodulated at a receiver to produce a received symbol stream. The received symbol stream is decoded to a bitstream according to an optimized constellation that has a non-Gray bit mapping and that has neighboring points having more than one bit difference farther apart than neighboring points having one bit difference.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: November 14, 2017
    Assignee: NEC Corporation
    Inventors: Fatih Yaman, Shaoliang Zhang, Eduardo Mateo Rodriquez, Yoshihisa Inada, Takaaki Ogata, Takanori Inoue
  • Patent number: 9813080
    Abstract: A method to decode low-density parity check (LDPC) encoded data using a parity check matrix having a plurality of layers, includes receiving a plurality of values at a decoder. Each value of the plurality of values represents one of a plurality of bits of an LDPC codeword encoded using the parity check matrix. The LDPC codeword is decoded using layered scheduling. A functional adjustment is applied to an approximation of belief propagation used during the decoding. At least one layer specific functional adjustment is used to provide an estimate of the codeword. An apparatus to decode low-density parity check (LDPC) encoded data using a parity check matrix having a plurality of layers includes a decoder. The decoder includes circuitry to decode, layer by layer, the LDPC encoded data utilizing functional adjustments and an algorithmic approximation to belief propagation to provide an estimate of the LDPC codeword.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: November 7, 2017
    Assignee: MICROSEMI SOLUTIONS (U.S.), INC.
    Inventors: Rino Micheloni, Alessia Marelli, Peter Z. Onufryk, Christopher I. W. Norrie
  • Patent number: 9806924
    Abstract: A wireless transmitter processing chain includes digital radio frequency mixing circuitry to generate, in digital form, a representation of a transmit signal including multiple communication channels. From the digital representation, a wideband digital to analog converter creates the analog transmit signal that includes the communication channels. Individual mixers and filters follow, with mixing frequencies tuned to place the communication channels at the desired frequency centers.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: October 31, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Franciscus Maria Leonardus Van der Goes, David Christopher Garrett, Jan Mulder
  • Patent number: 9800444
    Abstract: The present invention provides a method of transmitting broadcast signals, the method including, encoding service data, building at least one signal frame by mapping the encoded service data, modulating data in the built at least one signal frame by an Orthogonal Frequency Division Multiplexing, OFDM, scheme and transmitting the broadcast signals having the modulated data.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: October 24, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Sangchul Moon, Woosuk Ko, Sungryong Hong, Jinwoo Kim, Jongwoong Shin
  • Patent number: 9787328
    Abstract: The present invention provides a method of transmitting broadcast signals. The method includes, formatting, by an input formatting block, input streams into plural PLPs (Physical Layer Pipes); encoding, by an encoder, data in the plural PLPs; processing, by a framing and interleaving block, the encoded data in the plural PLPs to output at least one signal frame; and waveform modulating, by a waveform generation block, data in the at least one signal frame and transmitting, by the waveform generation block, broadcast signals having the waveform modulated data.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: October 10, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Jongseob Baek, Seoyoung Back, Woosuk Ko, Sungryong Hong
  • Patent number: 9780809
    Abstract: A non-volatile memory system may include a tracking module that tracks logic values of bits to be stored in memory elements identified as unreliable. A record of the logic values may be generated. During decoding of the data, a log likelihood ratio module may use the record to assign log likelihood ratio values for the decoding.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: October 3, 2017
    Assignee: SanDisk Technologies LLC
    Inventors: Daniel Tuers, Abhijeet Manohar, Sujeeth Joseph
  • Patent number: 9727419
    Abstract: An apparatus for processing data includes a storage medium operable to store encoded data, and a read channel circuit with a low density parity check encoder operable to encode data to generate the encoded data, and a low density parity check decoder operable to decode the encoded data retrieved from the storage medium. The read channel circuit is operable to perform a column rotation on the encoded data prior to storage and after retrieval before decoding.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: August 8, 2017
    Assignee: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
    Inventors: Xuebin Wu, Yang Han, Shaohua Yang
  • Patent number: 9729174
    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 based on a parity check matrix; an interleaver configured to interleave the LDPC codeword; and a modulator configured to map the interleaved LDPC codeword onto a modulation symbol, wherein the modulator is further configured to map a bit included in a predetermined bit group from among a plurality of bit groups constituting the LDPC codeword onto a predetermined bit of the modulation symbol.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: August 8, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Se-ho Myung, Hong-sil Jeong, Kyung-joong Kim
  • Patent number: 9722838
    Abstract: An apparatus for transmitting a broadcast signal includes an input formatting module configured to de-multiplex an input stream into at least one Data Pipe (DP); a BICM module configured to perform error correction processing on data of the at least one DP; a signal frame building module configured to map the data of the DP to symbols within a signal frame; and an OFDM generation module configured to generate a transmission broadcast signal by inserting a preamble into the signal frame and performing OFDM modulation. The OFDM generation module includes a pilot signal insertion module configured to insert a pilot signal including Continual Pilots (CP) and Scattered Pilots (SP) into the transmission broadcast signal, and the CPs are inserted into every symbol of the signal frame, and location and number of the CPs are determined based on a Fast Fourier Transform (FFT) size.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: August 1, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Chulkyu Mun, Jongseob Baek, Byounggill Kim, Jaehyung Kim, Woosuk Ko, Sungryong Hong
  • Patent number: 9699012
    Abstract: An apparatus for transmitting a broadcast signal includes an input formatting module configured to de-multiplex an input stream into at least one Data Pipe (DP); a BICM module configured to perform error correction processing on data of the at least one DP; a signal frame building module configured to map the data of the DP to symbols within a signal frame; and an OFDM generation module configured to generate a transmission broadcast signal by inserting a preamble into the signal frame and performing OFDM modulation. The OFDM generation module includes a pilot signal insertion module configured to insert a pilot signal including Continual Pilots (CP) and Scattered Pilots (SP) into the transmission broadcast signal, and the CPs are inserted into every symbol of the signal frame, and location and number of the CPs are determined based on a Fast Fourier Transform (FFT) size.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: July 4, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Chulkyu Mun, Jongseob Baek, Byounggill Kim, Jaehyung Kim, Woosuk Ko, Sungryong Hong
  • Patent number: 9692491
    Abstract: An apparatus for transmitting broadcast signals includes an encoder to encode service data corresponding to each of a plurality of physical paths; a time interleaver to time interleave the encoded service data in each physical path by a TI (Time Interleaving) block, where at least one virtual FEC block is ahead of FEC blocks in at least one TI block; a frame builder to build at least one signal frame including the time interleaved DP data; a modulator to modulate data in the built at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme; and a transmitter to transmit the broadcast signals having the modulated data.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: June 27, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Jongseob Baek, Woosuk Ko, Sungryong Hong
  • Patent number: 9680614
    Abstract: In described embodiments, a physical downlink control channel of a device operating in accordance with a 3GPP LTE standard is processed to provide interleaving, modulation and multi-layer mapping and pre-coding. A Resource Element Group interleaver applies interleaving to an input signal representing an input bitstream, and a modulator modulates the input signal. After interleaving and modulating the signal, a multi-layer mapper and pre-coder layer-maps and pre-codes the interleaved and modulated input signal into a plurality of different layers.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: June 13, 2017
    Assignee: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
    Inventors: Ido Gazit, Eran Goldstein, Shai Kalfon
  • Patent number: 9667373
    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 19, 2015
    Date of Patent: May 30, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Se-ho Myung, Belkacem Mouhouche, Daniel Ansorregui Lobete, Kyung-joong Kim, Hong-sil Jeong
  • Patent number: 9621191
    Abstract: In group-wise interleaving, interleaving of an LDPC code having a code length N of 64800 bits and an encoding rate r of 5/15 is performed in a unit of a bit group of 360 bits. In group-wise deinterleaving, an arrangement of the LDPC code that has undergone group-wise interleaving is returned to an original arrangement. The technology can be applied to a case of transmitting data using the LDPC code. The data processing device and data processing method can ensure excellent communication quality in data transmission using an LDPC code.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: April 11, 2017
    Assignee: SONY CORPORATION
    Inventors: Ryoji Ikegaya, Makiko Yamamoto, Yuji Shinohara
  • Patent number: 9614549
    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: April 15, 2016
    Date of Patent: April 4, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyung-Joong Kim, Se-ho Myung, Hong-sil Jeong, Daniel Ansorregui Lobete, Belkacem Mouhouche
  • Patent number: 9608786
    Abstract: A method of transmitting a sounding reference signal includes generating a physical uplink control channel (PUCCH) carrying uplink control information on a subframe, the subframe comprising a plurality of SC-FDMA (single carrier-frequency division multiple access) symbols, wherein the uplink control information is punctured on one SC-FDMA symbol in the subframe, and transmitting simultaneously the uplink control information on the PUCCH and a sounding reference signal on the punctured SC-FDMA symbol. The uplink control information and the sounding reference signal can be simultaneously transmitted without affecting a single carrier characteristic.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: March 28, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Hak Seong Kim, Bong Hoe Kim, Young Woo Yun, Ki Jun Kim, Dong Wook Roh, Dae Won Lee, Suk Hyon Yoon, Joon Kui Ahn, Dong Youn Seo
  • Patent number: 9602139
    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 16200 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 16-symbol mapping.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: March 21, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung-Ik Park, Sun-Hyoung Kwon, Bo-Mi Lim, Jae-Young Lee, Heung-Mook Kim, Nam-Ho Hur
  • Patent number: 9577680
    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 4/15. 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: February 19, 2015
    Date of Patent: February 21, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung-Ik Park, Sun-Hyoung Kwon, Jae-Young Lee, Heung-Mook Kim, Nam-Ho Hur
  • Patent number: 9577736
    Abstract: Wireless communication systems employ Multiple Input Multiple Output (MIMO) transmission and reception schemes to increase performance and the data rate of the system. A new approach for an SM-MIMO decoder that operates on the received symbols in parallel is presented. The new approach performs two different QR decompositions of the estimated channel matrix and produces two triangular matrices; one is right triangular and the other is left triangular. The modified systems of equations are processed in parallel. After each M-algorithm process has processed half of the total number of stages, total search space for the globally optimal transmitted symbol vector is reduced significantly. Finally, cumulative distance metrics are computed for the symbol sequences in the reduced search space and a global minimum is determined for the estimated transmitted symbol vector. This approach offers faster processing of the SM-MIMO signals and reduced distance metric computations and search operations.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: February 21, 2017
    Assignee: MBIT WIRELESS, INC.
    Inventors: Bhaskar Patel, Arumugam Govindswamy
  • Patent number: 9565048
    Abstract: Methods, systems, and devices are described for wired communication. In one aspect, a method includes selecting a gain scalar based at least in part on a constellation point distance associated with a constellation mapper for a line and a tone. The method also includes applying the gain scalar to a tone data output signal of a vector processor.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: February 7, 2017
    Assignee: Ikanos Communications, Inc.
    Inventors: Shailendra Kumar Singh, Amitkumar Mahadevan, Laurent Francis Alloin
  • Patent number: 9521019
    Abstract: A method for transmitting control information by transmitting a reference signal from a first transceiver to a second transceiver, in response to the reception of the reference signal, determining at the second transceiver a plurality of control channel elements based upon the received reference signal, jointly encoding the plurality of control channel elements at the second transceiver to generate a control signal, and transmitting the control signal from the second transceiver to the first transceiver.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: December 13, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Farooq Khan, Zhouyue Pi
  • Patent number: 9509379
    Abstract: A method for generating a codebook includes applying a unitary rotation to a baseline multidimensional constellation to produce a multidimensional mother constellation, wherein the unitary rotation is selected to optimize a distance function of the multidimensional mother constellation, and applying a set of operations to the multidimensional mother constellation to produce a set of constellation points. The method also includes storing the set of constellation points as the codebook of the plurality of codebooks.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: November 29, 2016
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Mahmoud Taherzadeh Boroujeni, Hosein Nikopour, Alireza Bayesteh, Mohammadhadi Baligh
  • Patent number: 9503167
    Abstract: The present invention provides a method of transmitting broadcast signals. The method includes, formatting input streams into Data Pipe, DP, data; Low-Density Parity-Check, LDPC, encoding the DP data according to a code rate; bit interleaving the LDPC encoded DP data; mapping the bit interleaved DP data onto constellations according to one of QAM (Quadrature Amplitude Modulation), NUQ (Non-Uniform QAM) or NUC (Non-Uniform Constellation); Multi-Input Multi-Output, MIMO, encoding the mapped DP data by using a MIMO encoding matrix having a MIMO encoding parameter; building at least one signal frame by mapping the MIMO encoded DP data; and modulating data in the built signal frame by an Orthogonal Frequency Division Multiplexing, OFDM, method and transmitting the broadcast signals having the modulated data.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: November 22, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Jinyong Choi, Byounggill Kim, Woochan Kim, Jaehyung Kim, Woosuk Ko, Sungryong Hong, Chulkyu Mun, Jaeho Hwang, Jongseob Baek, Kookyeon Kwak, Sangchul Moon