Generalized Orthogonal Or Special Mathematical Techniques Patents (Class 370/203)
  • Patent number: 9794941
    Abstract: In a wireless communication base station device, a modulation unit carries out modulation processing for Dch data after coding to generate a Dch data symbol. A modulation unit carries out modulation processing for Lch data after coding to generate an Lch data symbol. An allocation unit allocates the Dch data symbol and Lch data symbol to each sub-carrier composing an OFDM symbol and outputs the allocated sub-carrier to a multiplex unit. In this case, the allocation unit allocates the Dch data symbol to a plurality of resource blocks where one Dch is arranged at an interval equal to integral multiples of the number of resource blocks composing a resource block group.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: October 17, 2017
    Assignee: Panasonic Corporation
    Inventors: Akihiko Nishio, Christian Wengerter, Hidetoshi Suzuki, Katsuhiko Hiramatsu
  • Patent number: 9794039
    Abstract: A method for transmitting a reference signal by a user equipment (UE) in a wireless communication system. The UE generates an uplink reference signal in a subframe comprising first, second, third, fourth, fifth, sixth and seventh orthogonal frequency division multiplexing (OFDM) symbols in time domain and a plurality of subcarriers in frequency domain. The UE transmits the uplink reference signal to a base station in the third, fourth and fifth OFDM symbols. The transmitted uplink reference signal is hopped in the frequency domain, based on a cell specific hopping parameter.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: October 17, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Jin Sam Kwak, Seung Hee Han, Min Seok Noh, Yeong Hyeon Kwon, Hyun Woo Lee, Dong Cheol Kim
  • Patent number: 9787446
    Abstract: A method (700) for processing resource blocks in a receiver may include receiving (701) a signal comprising transmissions from a plurality of radio cells, wherein received samples of the signal are arranged in a plurality of resource blocks (300); forming (702) a plurality of clusters ({xi,jN}) based on a similarity criterion with respect to the plurality of resource blocks (300); and assigning (703) each resource block of the plurality of resource blocks (300) to one cluster of the plurality of clusters ({xi,jN}).
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: October 10, 2017
    Assignee: Intel IP Corporation
    Inventors: Kilian Roth, Cecilia Carbonelli, Stefan Fechtel
  • Patent number: 9780846
    Abstract: Selective processing of one or more packets to be transmitted from a wireless communication device to another wireless communication device is effective to reduce the peak to average power ratio (PAPR) of the transmission. The one or more packets are transmitted via two or more sub-bands of an available transmission medium. The number of coefficients or factors within that sequence corresponds to the number of sub-bands via which the one or more packets are to be transmitted. Also, a phase ramp or time-domain cyclic shift may be added to one or more of the packets after having undergone multiplication by one of the coefficients or factors within the sequence.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: October 3, 2017
    Assignee: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE
    Inventors: Ron Porat, Jun Zheng
  • Patent number: 9781634
    Abstract: Embodiments of the invention include methods, articles, and apparatuses to provide information related to channels transmitted and received according to a wireless communications protocol. One embodiment of the invention provides a method comprising generating channel offset information corresponding to an extension channel within a channel of a wireless communications protocol, and transmitting the channel offset information as part of channel information to be transmitted to one or more remote devices communicating according to the wireless communications protocol. Other embodiments are also disclosed.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: October 3, 2017
    Assignee: INTEL CORPORATION
    Inventors: Solomon Trainin, Adrian Stephens
  • Patent number: 9780962
    Abstract: A method, system and computer program for transmitting at least two payloads in a downstream traffic phase of a time-division duplex (TDD) cycle with a single preamble from a headend followed by concatenated payloads without intervening preambles, whereby the payloads are ranked by increasing modulation profiles. The preamble, and concatenated and ordered set of payloads are then transmitted to two or more predetermined customer premise equipments (CPEs).
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: October 3, 2017
    Assignee: ENTROPIC COMMUNICATIONS, LLC
    Inventors: Chi-ping Nee, Michail Tsatsanis, David Barr
  • Patent number: 9772368
    Abstract: A technique detects an abnormal signal in a compound sampled signal recorded in the time domain. The technique involves dividing the sampled signal recorded in the time domain into sample segments; transforming each of the sample segments from the time domain into the frequency domain to determine transformed segments, each transformed segment having frequency points, each frequency point having an amplitude associated with a certain frequency; for a frequency point in a given transformed segment, determining a ratio by dividing the amplitude of the frequency point by a value indicative of an average of the amplitudes of the frequency points at the same frequency across transformed segments; repeating the determination of a ratio for frequency points in each transformed segment to determine ratios for each transformed segment; repeating the determination of ratios for transformed segments; and using the ratios to detect the abnormal signal in the compound sampled signal.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: September 26, 2017
    Assignee: Bosch Automotive Service Solutions Inc.
    Inventors: Moray Kidd, Zhanqun Shi
  • Patent number: 9768940
    Abstract: The present invention relates to a method of transmitting and receiving a signal in a wireless communication system. In particular, in a time division multi-cell cooperative communication system, a base station may receive a reference signal, estimate a channel of each user terminal based on the reference signal, and determine a transmission and reception filter based on estimated channel information. The base station and a cooperative base station that cooperates with the base station may mutually exchange the reference signal and average signal power information on a terminal and determine the transmission and reception filter based on exchanged information.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: September 19, 2017
    Assignees: LG ELECTRONICS INC., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Hyunsoo Ko, Kyungjun Choi, Kwangsoon Kim, Jaehoon Chung, Jinmin Kim
  • Patent number: 9768849
    Abstract: The present invention relates to a wireless communication system and, more specifically, to a method and an apparatus for reporting channel status information (CSI). Particularly, the method by which a terminal in the wireless communication system reports the CSI, comprises the steps of: receiving a reference signal from a base station; and reporting, to the base station, the CSI generated by using the reference signal, wherein the CSI includes channel information for a plurality of antenna ports mapped according to a first parameter, and the first parameter is a value related to vertical domain antenna ports indicated through upper layer signaling.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: September 19, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyunsoo Ko, Jinmin Kim, Jaehoon Chung
  • Patent number: 9763232
    Abstract: The present invention relates to a method for feeding back, by a terminal, channel status information (CSI) in a wireless communication system. In detail, the method includes the steps of feeding back a subband channel quality indication (CQI) and a subband precoding matrix index (PMI), wherein a first subband size for the subband CQI and a second subband size for the subband PMI are set differently.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: September 12, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Youngtae Kim, Jonghyun Park, Kijun Kim, Hyungtae Kim
  • Patent number: 9762263
    Abstract: The present invention relates to a method of transmitting and a method of receiving signals an corresponding apparatus. One aspect of the present invention relates to an efficient L1 signaling method for an efficient transmitter and an efficient receiver using the efficient L1 signaling method for an efficient cable broadcasting.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: September 12, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Woo Suk Ko, Sang Chul Moon
  • Patent number: 9755878
    Abstract: A broadcast signal transmitter is disclosed. A broadcast signal transmitter according to an embodiment of the present invention comprises an input formatting module performing baseband formatting and outputting at least one Physical Layer Pipe (PLP) data; a BICM module error-correction processing the PLP data; a framing & interleaving module interleaving the PLP data and generating a signal frame; and a waveform generating module inserting a preamble into the signal frame and generating a broadcast signal by performing OFDM modulation.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: September 5, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Jongseob Baek, Woosuk Ko, Sungryong Hong
  • Patent number: 9755879
    Abstract: Methods and apparatuses for Orthogonal Frequency-Division Multiplexing (OFDM) communication of non-OFDM radio signals are disclosed. The non-OFDM radio signals are force-modulated into OFDM signals. In one example, a non-OFDM signal is received and is processed into an OFDM signal to produce a created OFDM signal. An actual OFDM signal is also received and is processed together with the created OFDM signal.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: September 5, 2017
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Amer A. Hassan, Christian Huitema
  • Patent number: 9755873
    Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder for encoding service data, a mapper for mapping the encoded service data into a plurality of OFDM (Orthogonal Frequency Division Multiplex) symbols to build at least one signal frame, a frequency interleaver for frequency interleaving data in the at least one signal frame by using a different interleaving-seed which is used for every OFDM symbol pair comprised of two sequential OFDM symbols, a modulator for modulating the frequency interleaved data by an OFDM scheme and a transmitter for transmitting the broadcast signals having the modulated data, wherein the different interleaving-seed is generated based on a cyclic shifting value and wherein an interleaving seed is variable based on an FFT size of the modulating.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: September 5, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Jongseob Baek, Jongwoong Shin, Jaehyung Kim, Woosuk Ko, Sungryong Hong
  • Patent number: 9749105
    Abstract: The present invention relates to methods and apparatus in a RBS and a UE for reference signal (RS) measurements in an OFDM system, that enable having a configurable RS transmission bandwidth which is smaller than the system bandwidth. This allows for better interference coordination of RS, which in turn improves the UE RS measurements used for different services such as positioning. The RBS retrieves the RS transmission bandwidth, determines a RS measurement bandwidth based on this RS transmission bandwidth, and transmits the determined bandwidth to the UE. The UE receives the RS measurement bandwidth and measures the RS in a bandwidth determined based on the received measurement bandwidth and the UE capability.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: August 29, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Iana Siomina, Dirk Gerstenberger, Daniel Larsson
  • Patent number: 9750053
    Abstract: Methods and apparatus for random access in multicarrier wireless communications are disclosed. Methods and apparatus are provided for physical random access channel (PRACH) resource signaling, PRACH resource handling, preamble and PRACH resource selection, random access response (RAR) reception, preamble retransmission, and transmission and reception of subsequent messages. A method for maintaining an allowed multicarrier uplink (UL) random access channel (RACH) configuration set by adding an UL carrier to the allowed RACH configuration set provided that a triggering event occurs and performing a random access (RA) procedure using the allowed RACH configuration set. A method for sending data in multicarrier wireless communications by determining a set of available UL carriers and selecting an UL carrier from the set of available UL carriers.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: August 29, 2017
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Ghyslain Pelletier, Stephen E. Terry, Paul Marinier, Guodong Zhang, Peter S. Wang, Jin Wang, Shankar Somasundaram, Jean-Louis Gauvreau, Charles A. Dennean, Erdem Bala, Afshin Haghighat
  • Patent number: 9743273
    Abstract: Systems and methods for implementing a medium access group assignment of stations (STAs) are disclosed. An access point (AP) device may be configured to allocate a chosen beacon interval to a medium access group (MAG). Further, the AP device may assign STAs to different MAGs. After assignment to a particular MAG, the STAs that are associated to the particular MAG may use the configured beacon interval during transmission and reception of messages.
    Type: Grant
    Filed: October 1, 2011
    Date of Patent: August 22, 2017
    Assignee: Intel Corporation
    Inventors: Michelle X. Gong, Adrian P. Stephens
  • Patent number: 9743389
    Abstract: Disclosed are a method and a corresponding apparatus relating to wireless telecommunication systems and more particularly to efficient resource allocation schemes supporting transmission of multiple periodic channel state information (CSI) reports on the physical uplink control channel (PUCCH) during the same subframe while maintaining single carrier properties of the transmitted signal. The method includes determining that at least two reports to be transmitted on an uplink resource collide with respect to the uplink resource, applying at least one resource selection policy to the at least two reports and selecting a resource to be used for transmitting a plurality of the at least two reports.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: August 22, 2017
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Esa Tapani Tiirola, Timo Erkki Lunttila, Kari Juhani Hooli, Kari Pekka Pajukoski
  • Patent number: 9742606
    Abstract: Pilot, preamble and midamble patterns are provided that are particularly suited for four transmit antenna OFDM systems. Pilots are inserted in a scattered manner for each of the four antennas, either uncoded, space-time coded in pairs, space-time frequency coded in pairs, or space-time-frequency coded.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: August 22, 2017
    Assignee: APPLE INC.
    Inventors: Jianglei Ma, Ming Jia, Wen Tong, Peiying Zhu, Claude Royer
  • Patent number: 9736829
    Abstract: Methods, apparatuses, systems, and devices are described for wireless communication. In one method, at least a first carrier may be monitored for an indication of a clear channel assessment (CCA) for a second carrier in a shared spectrum, and communication may take place using the second carrier based on the indication. In another method, a CCA may be performed for a second carrier second carrier of a shared spectrum, and an indication of the CCA for the second carrier may be transmitted on a first carrier.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: August 15, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Wanshi Chen, Hao Xu, Peter Gaal, Tao Luo, Srinivas Yerramalli, Tingfang Ji, Aleksandar Damnjanovic, Yongbin Wei, Naga Bhushan, Durga Prasad Malladi
  • Patent number: 9735889
    Abstract: Described are, among other things, a method and a receiver for receiving a management data signal in an optical transmission system where a traffic data signal is transmitted as a NRZ modulated signal. The traffic data signal has a management data signal superimposed thereon as a pulse width modulation of the symbols of the NRZ modulated signal. The NRZ modulated signal is received with the data signal superimposed thereon and the traffic data signal is recovered. The recovered traffic data signal in anti-phase is added to the received signal. The management data signal is detected from the added signals.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: August 15, 2017
    Assignee: TRANSMODE SYSTEMS AB
    Inventor: Gunnar Forsberg
  • Patent number: 9735938
    Abstract: In a radio communication system, transmission of CAZAC sequences as the pilot signal sequences by using code division multiplexing as at least one of user multiplexing schemes, is done by dividing a system band as a frequency band usable in the system into frequency blocks B1 and B2 having bandwidths W1 and W2, generating the pilot signals of the frequency blocks B1 and B2 with a single carrier, using the pilot signal sequences having sequence lengths L1 and L2 corresponding to frequency blocks B1 and B2 respectively; and, transmitting the generated pilot signals as the pilot signals corresponding individual users, with multicarriers using an arbitrary number of frequency blocks among the plural frequency blocks.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: August 15, 2017
    Assignee: NEC CORPORATION
    Inventors: Takamichi Inoue, Yoshikazu Kakura
  • Patent number: 9729218
    Abstract: A method and apparatus for transmitting a signal in a wireless communication system are provided. The method includes: generating R spatial streams each of which is generated on the basis of an information stream and a reference signal; generating N transmit streams on the basis of the R spatial streams and a precoding matrix (where R<N); mapping the N transmit streams to at least one resource block; and generating N signals from the N transmit streams mapped to the at least one resource block, and the transmitting the N signals to a user equipment through respective antennas.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: August 8, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Moon Il Lee, Wook Bong Lee, Ja Ho Koo, Hyun Soo Ko, Jae Hoon Chung, Bin Chul Ihm
  • Patent number: 9729356
    Abstract: A user equipment device operating in a cellular communications system includes a neighbor cell searcher configured to receive a first reference signal transmitted from a base station of a first cell of the cellular communications system and determine first channel information associated with the first cell, and receive a second reference signal transmitted from a base station of a second cell of the cellular communications system and determine second channel information associated with the second cell. A channel estimator is configured to generate correlations between times and frequencies associated with reception of the first reference signal and the second reference signal, and generate a channel estimate corresponding to the first reference signal based on the first channel information, the second channel information, and the correlations.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: August 8, 2017
    Assignee: Marvell International Ltd.
    Inventors: Kobby Pick, Daniel Yellin, Yona Perets, Adoram Erell
  • Patent number: 9720096
    Abstract: A method for improving tracking of a data transmission signal emitted to a receiver of a satellite navigation system in addition to navigation signals emitted by satellites to a satellite positioning receiver, comprises: transmission to the receiver, during a improvement period, by an improvement signal emitted in coherence with the data transmission signal, of data Ni or other data Nai to predict the data, the data transmitted to the receiver by the data transmission signal during a transmission period starting after the improvement period, reception, by the receiver, of the data Ni or other data Nai which are transmitted by the improvement signal, generating symbols to modulate the data transmission signal during the transmission period by the data Ni received or other data Nai received, tracking the data transmission signal while removing the effect of modulation of the data transmission signal by the symbols generated.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: August 1, 2017
    Assignee: Thales
    Inventors: Jean-Louis Damidaux, RĂ©gine Damidaux
  • Patent number: 9722821
    Abstract: A precoding method, a precoding apparatus, a Frequency Domain Equalization (FDE) method, and an FDE apparatus are provided in the embodiments of the present invention. The precoding method includes: performing offset modulation for a transmitting signal vector; calculating a precoding matrix according to the offset-modulated transmitting signal vector and a receiver decision signal vector, where the precoding matrix is used for performing precoding for the transmitting signal vector; and performing precoding for the transmitting signal vector according to the precoding matrix. Linear precoding is performed by using the offset-modulated signal on the transmitter, and therefore, the interference caused by multiple antennas and multipath propagation is reduced, the system BER is reduced, and the complexity of implementation is low.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: August 1, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Gong Zhang, Xun Yang, Pei Xiao, Zihuai Lin
  • Patent number: 9712342
    Abstract: A method of transmitting a frame is provided by a device in a WLAN. The device sets as additional data subcarriers some of subcarriers which are not set as data subcarriers in at least part of fields included in a frame of a legacy frame format, and allocates information to the additional data subcarriers.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: July 18, 2017
    Assignee: NEWRACOM, INC.
    Inventors: Heejung Yu, Minho Cheong, Hyoung Jin Kwon
  • Patent number: 9712303
    Abstract: A reference signal transmission scheme is presented. A first user equipment (UE) receives first information identifying which uplink subframe of a plurality of subframes is enabled to transmit an uplink reference signal, and receives second information identifying a sequence used for the uplink reference signal from a base station. The first information is used to identify a different uplink subframe to a first UE group including the first UE and a second UE group other than the first UE group. The second information is determined to assign different orthogonal sequences to each of UEs of the first UE group. The first UE transmits the uplink reference signal to the base station at the uplink subframe identified by the first information using the sequence identified by the second information.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: July 18, 2017
    Assignee: LG Electronics Inc.
    Inventors: Kilbom Lee, Jiwon Kang, Hyunsoo Ko, Jaehoon Chung
  • Patent number: 9712188
    Abstract: In one embodiment, a method includes reading packets of data from M parallel data tracks of a magnetic tape to obtain a plurality of (D+P)-symbol codewords which are logically arranged in nM encoded blocks, each packet including a row of an encoded block, where each encoded block includes an array having rows and columns of code symbols, wherein symbols of each of the (D+P)-symbol codewords are distributed over corresponding rows of the nM encoded blocks, decoding sub-blocks from rows and columns of a plurality of product codewords from the nM encoded blocks, each product codeword including a logical array of code symbols having the rows which include respective row codewords and the columns which include respective column codewords, where each sub-block includes a logical array having rows and columns of data symbols, combining the sub-blocks to form a block of data, and outputting the block of data.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: July 18, 2017
    Assignee: International Business Machines Corporation
    Inventors: Roy D. Cideciyan, Simeon Furrer, Robert A. Hutchins, Mark A. Lantz
  • Patent number: 9705534
    Abstract: An electronic device is provided, which includes an antenna; and a communication processor configured to transmit and receive a first signal corresponding to a first frequency band through the antenna, and to perform one of transmitting and receiving a second signal corresponding to a second frequency band through the antenna.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: July 11, 2017
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Min Ho Kim, Sung Min Lee, Jong Pil Lee, Sung Chul Park
  • Patent number: 9686042
    Abstract: Disclosed is a method of transmitting, by a transmission device, broadcast signals in a frequency-shared terrestrial broadcast system. The method includes generating the broadcast signals including pilot signals arranged at a physical layer frame based on a group identification (ID) defined according to a broadcast service, and transmitting the generated broadcast signals to a reception device, wherein the positions of the pilot signals arranged at the physical layer frame are different by group IDs.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: June 20, 2017
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Ik Park, Sun Hyoung Kwon, Heung Mook Kim, Nam Ho Hur, Jeong Chang Kim, Jae Hyun Seo, Ho Min Eum
  • Patent number: 9681312
    Abstract: An implementation manner of the present invention provides a reference signal sequence configuration method. The method includes: selecting, by a network device and from candidate IDs, an ID used for generating a reference signal initialization sequence for a terminal, where the candidate IDs include at least two IDs, and the selected ID does not include a scrambling ID; and generating a reference signal initialization sequence for the terminal according to the selected ID. An implementation manner of the present invention further provides a network device. In the reference signal sequence configuration method and the network device, a reference signal initialization sequence is generated according to the selected ID, thereby providing a manner of generating a reference signal initialization sequence different from the manner in the prior art.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: June 13, 2017
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Kunpeng Liu, Liang Xia, Yuan Xia
  • Patent number: 9680678
    Abstract: Methods and apparatuses for communicating in a wireless network include methods and systems for producing a discovery signal for use in cellular context using unlicensed spectrum having contiguous resource elements in the time domain.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: June 13, 2017
    Assignee: INTEL IP CORPORATION
    Inventors: Shafi Bashar, Seunghee Han, Huaning Niu, Christian Ibars Casas, Jong-Kae Fwu
  • Patent number: 9673946
    Abstract: This document discusses, among other things, apparatus and methods for transmit beamforming sounding. An example method for communicating over a wireless network having multiple sub-carrier frequencies can include assigning a first pilot signal to a first sub-carrier frequency for transmission with a first symbol, transmitting the first symbol from a first wireless device, receiving the first symbol at a second wireless device, determining channel time and phase offset using the first pilot signal, and estimating transmit beamforming channel state information using the first pilot signal.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: June 6, 2017
    Assignee: Intel Corporation
    Inventors: Thomas J. Kenney, Eldad Perahia, Shahrnaz Azizi
  • Patent number: 9674317
    Abstract: A first preamble portion of a physical layer (PHY) data unit is generated according to a first clock rate, wherein the first preamble portion is formatted according to a first PHY mode of a wireless communication protocol when the PHY data unit is to be transmitted according to the first PHY mode, and the first preamble portion is formatted according to a second PHY mode of the wireless communication protocol when the PHY data unit is to be transmitted according to the second PHY mode. An OFDM portion of the PHY data unit is generated, wherein the OFDM portion follows the first preamble portion, includes a second preamble portion having one or more long training fields, is clocked at the first clock rate when the PHY data unit is to be transmitted according to a first PHY mode, and is clocked at a second clock rate different than the first clock rate when the PHY data unit is to be transmitted according to a second PHY mode.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: June 6, 2017
    Assignee: Marvell World Trade Ltd.
    Inventor: Hongyuan Zhang
  • Patent number: 9668148
    Abstract: Fiber, cable, and wireless data channels are typically impaired by reflectors and other imperfections, producing a channel state with echoes and frequency shifts in data waveforms. Here, methods of using OTFS pilot symbol waveform bursts to automatically produce a detailed 2D model of the channel state are presented. This 2D channel state can then be used to optimize data transmission. For wireless data channels, an even more detailed 2D model of channel state can be produced by using polarization and multiple antennas in the process. Once 2D channel states are known, the system turns imperfect data channels from a liability to an advantage by using channel imperfections to boost data transmission rates. The methods can be used to improve legacy data transmission modes in multiple types of media, and are particularly useful for producing new types of robust and high capacity wireless communications using non-legacy OTFS data transmission methods.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: May 30, 2017
    Assignee: Cohere Technologies, Inc.
    Inventors: Ronny Hadani, Shlomo Selim Rakib
  • Patent number: 9667458
    Abstract: A device may demodulate a set of OFDM data-pilot symbols and select a subset of based at least in part on the position of each data pilot on a constellation map (e.g., how close the data pilot symbol is to an actual constellation point). The device may then perform a data-pilot-based phase estimation based at least in part on the selected subset. The device may also reduce the number of data pilots by partitioning a set of subcarriers into groups and selecting a representative subcarrier from each group. The phase estimation may then be based on the data pilots received on the selected subcarriers. In some cases, the device may also generate a smooth phase signal based on a linear regression algorithm including a phase averaging and a phase offset estimation and perform the phase estimation using the smooth phase signal.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: May 30, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Georg Frank, Nicola Varanese
  • Patent number: 9660693
    Abstract: A spatio-temporal signal monitoring system includes a sampler configured to receive a radio frequency signal and obtain first compressive sensing measurements of said received signal at a first resolution level, and a signal detector configured to identify at least one signal of interest based on said first compressive sensing measurements and perform second compressive sensing measurements on said at least one signal of interest at a second resolution level, said second resolution level being higher than said first resolution level. The received signal may be analyzed as an array or image having two or more dimensions, based on frequency and on at least one other parameter, such as angle-of arrival, and may be analyzed at a higher level of resolution at the frequencies and angles corresponding to a signal of interest (SOI). Estimates of the frequency and/or the at least one other parameter may be generated by the system.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: May 23, 2017
    Assignee: HRL Laboratories, LLC
    Inventors: Kang-Yu Ni, Shankar R. Rao
  • Patent number: 9661650
    Abstract: Systems and methodologies are described that facilitate allocation of uplink acknowledgement (ACK) resources for a wireless communication system. Various aspects described herein facilitate explicit creation and transmission of a bundled assignment of downlink communication resources and uplink resources for ACK transmission, thereby facilitating overhead-efficient ACK allocation for users that can communicate pursuant to a persistent resource assignment without requiring scheduling information from an associated control channel. Additionally, indexing schemes for uplink ACK resources are provided herein to facilitate ACK allocation for systems in which both scheduled and persistent users can communicate at a common transmission time interval (TTI).
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: May 23, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Juan Montojo, Durga Prasad Malladi, Xiaoxia Zhang
  • Patent number: 9660770
    Abstract: A data communication framing scheme of a bit stream that is divided among a plurality of discrete physical frames, each physical frame is of a definite number of symbols in duration, each symbol is associated with at least one sub-carrier in a plurality of sub-carriers, the physical frame is partitioned in time into at least an uplink zone and a downlink zone, the data framing scheme comprising a logical frame having a logical frame start position that is offset by a rational number of said symbols from a reference symbol, said reference symbol is selected from said definite number of symbols, wherein said logical frame extends in time to coincide with at least part of the duration of said physical frame and at least part of the duration of another physical frame in said plurality of discrete physical frames.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: May 23, 2017
    Assignee: Sckipio Technologies S.I Ltd
    Inventors: Guy Reina, Rami Verbin, Ron Sterenson
  • Patent number: 9660779
    Abstract: The present invention relates to the technical field of radio communications, and specifically relates to a method, device, and system for transmitting a reference signal, for use in solving the problem in the prior art that vertical-dimension channel estimation cannot be supported and thus 3D beamforming is not supported.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: May 23, 2017
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Meifang Jing, Xin Su, Rakesh Tamrakar, Qiubin Gao
  • Patent number: 9654313
    Abstract: Embodiments relate to apparatus for wireless interference mitigation within a first User Equipment (UE). The apparatus comprises at least one channel estimator for estimating a first channel transfer function associated with a first received signal designated for the first UE, and for estimating a second channel transfer function associated with a second received, interference, signal. A symbol estimator is responsive to the at least one channel estimator to process at least the first received signal to produce a symbol estimation. A demodulator, which is responsive to the channel estimator, demodulates the symbol estimation to an output representing a received data unit corresponding to the symbol estimation. The demodulator has a processing unit arranged to demodulate the symbol estimation using the first channel transfer function, the second channel transfer function and a respective modulation scheme for at least the first received signal.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: May 16, 2017
    Assignee: INTEL CORPORATION
    Inventors: Alexei Davydov, Seunghee Han, Gregory Morozov, Alexander Maltsev, Vadim Sergeyev
  • Patent number: 9654187
    Abstract: A User Equipment in a wireless communication network includes a multiplicity of antennas, from which a subset of antennas is selected using a selection scheme synchronized to the network. A set of sub-carriers is selected from a plurality of sub-carriers using a selection scheme synchronized to the network. The UE receives a plurality of known reference symbols over the selected set of sub-carriers and through the selected subset of antennas. A frequency response for each selected sub-carrier is estimated over only the selected subset of antennas. The results are quantized and transmitted to the network on an uplink control channel.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: May 16, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Dennis Hui, Jung-Fu Cheng, Kambiz Zangi, Leonid Krasny
  • Patent number: 9654273
    Abstract: A method of transmitting control signals in a wireless communication system includes multiplexing a first control signal with a second control signal in a slot, the slot comprising a plurality of orthogonal frequency division multiplexing (OFDM) symbols in time domain, the plurality of OFDM symbols being divided into a plurality of data OFDM symbols and a plurality of reference signal (RS) OFDM symbols, wherein the first control signal is mapped to the plurality of data OFDM symbols after the first control signal is spread by a base sequence in the frequency domain, the RS is mapped to the plurality of RS OFDM symbols, the second control signal is mapped to at least one of the plurality of RS OFDM symbols, and transmitting the first control signal and the second control signal in the slot.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: May 16, 2017
    Assignee: LG Electronics Inc.
    Inventors: Jin Sam Kwak, Seung Hee Han, Min Seok Noh, Yeong Hyeon Kwon, Hyun Woo Lee, Dong Cheol Kim
  • Patent number: 9648558
    Abstract: A network for facilitating wireless radio communication. The network includes a first access area, wherein the access area includes one or more transmission/receive points. At least one transmission/receive point includes a base station that supports wireless communication between a network and user equipment (UE), such as, a mobile device. The network includes a dedicated connection signature (DCS) that is assigned to a UE. The DCS provides for and is used by the UE to maintain active, unified access to the wireless network. More particularly, the DCS provides for active, contention free, and fast access for the UE to the network through transmission/receive points within the first access area, which is of significance to present and future UE centric virtual radio access networks having high densities of mobile and non-mobile users and with high populations of different types of traffic patterns and applications.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: May 9, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Liqing Zhang, Jianglei Ma, Kelvin Au, Zhihang Yi
  • Patent number: 9641213
    Abstract: Provided is a transceiver.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: May 2, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jung Hoon Oh, Heon Kook Kwon
  • Patent number: 9641377
    Abstract: Systems and methods for adjusting timing in a communication system, such as an OFDM system are described. In one implementation an error signal is generated to adjust the timing of a variable rate interpolator so as to adjust FFT timing. The error signal may be based on detection of significant peaks in an estimate of the impulse response of the channel, with the peak locations being tracked over subsequent symbols and the system timing adjusted in response to changes in the peaks.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: May 2, 2017
    Assignee: Maxlinear, Inc.
    Inventors: Seung-Chul Hong, Anand Anandakumar, Curtis Ling
  • Patent number: 9642143
    Abstract: In a wireless communication base station device, a modulation unit carries out modulation processing for Dch data after coding to generate a Dch data symbol. A modulation unit carries out modulation processing for Lch data after coding to generate an Lch data symbol. An allocation unit allocates the Dch data symbol and Lch data symbol to each sub-carrier composing an OFDM symbol and outputs the allocated sub-carrier to a multiplex unit. In this case, the allocation unit allocates the Dch data symbol to a plurality of resource blocks where one Dch is arranged at an interval equal to integral multiples of the number of resource blocks composing a resource block group.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: May 2, 2017
    Assignee: Panasonic Corporation
    Inventors: Akihiko Nishio, Christian Wengerter, Hidetoshi Suzuki, Katsuhiko Hiramatsu
  • Patent number: 9635529
    Abstract: In some examples, data to be transmitted by a transmit node to at least one receive node may be compressed according to one or more sets of compression parameters. One or more estimated peak to average power ratios (PAPRs) to transmit one or more resulting versions of compressed data may be calculated based on precoder data associated with the at least one receive node. A version of the compressed data that has an estimated PAPR that is less than a PAPR threshold value may be sent to the transmit node to transmit to the at least one receive node. Alternately, a version of the compressed data that has an estimated PAPR that is a lowest estimated PAPR relative to at least some other estimated PAPRs corresponding to other versions of the compressed data may be sent to the transmit node to transmit to the at least one receive node.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: April 25, 2017
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventors: Ezekiel Kruglick, Kevin S. Fine
  • Patent number: 9628231
    Abstract: An OFDM transmitter spreads original data symbols with a complex-valued spreading matrix derived from a discrete Fourier transform. Spread data symbols are mapped to OFDM subcarriers. Spreading and mapping are configured to produce a transmitted spread-OFDM signal with a low peak-to-average power ratio (PAPR) and orthogonal code spaces. In MIMO systems, the complex-valued spreading matrix can comprise a MIMO precoding matrix, and the code spaces can comprise MIMO subspaces. In Cooperative-MIMO, a combination of low code-space cross correlation and low PAPR can be achieved.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: April 18, 2017
    Assignee: Genghiscomm Holdings, LLC
    Inventor: Steve Shattil