Transmitters Patents (Class 375/295)
  • Patent number: 9893777
    Abstract: A method for operating a base station includes allocating at least one respective CSI-RS port to each of a plurality of user equipments (UEs), precoding the at least one respective CSI-RS port with a first respective precoding matrix for each of the plurality of UEs, transmitting the at least one respective CSI-RS port precoded with the first respective precoding matrix through a channel to each of the plurality of UEs, receiving an index of a second respective precoding matrix from each of the plurality of UEs, wherein the second respective precoding matrix is determined according to the at least respective one CSI-RS port precoded with the first precoding matrix as received through the channel by each of the plurality of UEs, and precoding respective transmission data with the first respective precoding matrix and the second respective precoding matrix to each of the plurality of UEs.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: February 13, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eko Onggosanusi, Jianzhong Zhang, Yang Li, Young-Han Nam, Boon Loong Ng
  • Patent number: 9887801
    Abstract: Methods and apparatus are provided to define sub-bands within a downlink (DL) system bandwidth or within an uplink (UL) system bandwidth, to configure sub-bands for DL signaling or for UL signaling, and to transmit or receive DL signaling or UL signaling with repetitions in the configured sub-bands.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: February 6, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Aris Papasakellariou
  • Patent number: 9888303
    Abstract: A method and related system for linearizing a photonic ADC sampling system of an ELINT receiver includes modulating optical pulse trains of varied pulse amplitudes based on a generated ramped-voltage calibration signal. The modulated pulse trains are demodulated into I/Q components to generate signal constellations. Equivoltage radials are defined by points of the signal constellations sharing a common calibration voltage and a common phase angle of the modulator. A lookup table is generated by mapping the signal constellations and equivoltage radials to a coordinate system to determine, for each coordinate bin, a corresponding pulse amplitude and phase angle. The generated lookup table may be used to correct nonlinear distortions in recovered output signals, preserving high-ENOB performance and increasing the dynamic range of the receiver.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: February 6, 2018
    Assignee: Rockwell Collins, Inc.
    Inventors: Kim S. Jepsen, Wenlu Chen, Raymond Zanoni, Mark A. Laliberte, Oliver S. King
  • Patent number: 9888448
    Abstract: A device may determine that a first antenna of a user equipment is transmitting at a maximum transmission power value, and may determine a received signal power value associated with a wireless signal transmitted via the first antenna of the user equipment. The device may compare a target signal power value and the received signal power value, and may determine that a switching threshold value is satisfied. The device may provide, to the user equipment, an instruction to transmit via a second antenna based on determining that the switching threshold value is satisfied.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: February 6, 2018
    Assignee: Verizon Patent and Licensing Inc.
    Inventor: Jignesh S. Panchal
  • Patent number: 9866287
    Abstract: A MIMO receiving system includes a MIMO antenna apparatus that receives a MIMO transmission signal including at least two MIMO transmission signal streams, wherein the MIMO transmission signal includes one or more MIMO transmission channels and wherein a MIMO transmission channel carrying one or more services includes two MIMO receive signal components covering a same frequency channel and being included in different transmission signal streams. A MIMO preprocessing apparatus preprocesses the MIMO transmission signal and outputs a multiplex signal. One or more receiving apparatus receive the multiplex signal from the output signal path to use a service contained in the single multiplex signal and output a service data stream.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: January 9, 2018
    Assignee: SONY CORPORATION
    Inventors: Lothar Stadelmeier, Nabil Sven Loghin, Jan Zoellner, Heimo Guth
  • Patent number: 9866247
    Abstract: A communications device including a receiver configured to receive a plurality of sub-units of an encoded transport block of data in a plurality of time-divided units within frequency resources of a wireless access interface allocated to the mobile terminal, each of the sub-units being received a repeated number of times within a repetition cycle; and circuitry configured to combine a same sub-unit received the repeated number of times to form a composite sub-unit to recover the transport block.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: January 9, 2018
    Assignee: SONY CORPORATION
    Inventors: Shin Horng Wong, Martin Warwick Beale
  • Patent number: 9860573
    Abstract: Provided are a method and apparatus for receiving and providing data. The method of receiving data includes: receiving first information including information about a first interval of a plurality of media data generated by encoding content in different qualities; acquiring renewal time information indicating a point of time for a first file to be renewed by using the first information; and receiving second information comprising information about a second interval of the plurality of media data based on the renewal time information.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: January 2, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: O-hoon Kwon, Ho-jin Ha, Guanhua Zhang, Hyung-tak Choi, Sun-bal Kim, Ji-eun Keum, Sung-bin Im
  • Patent number: 9860837
    Abstract: An operating mode change method of a wireless local area network (WLAN) system according to an exemplary embodiment includes transmitting, by a station (STA) to an access point (AP), an operating mode change request frame comprising at least one of information on a change of a traffic indication map (TIM) mode, a request for a change of a power save parameter, and information on a change of a service type of the STA, receiving, from the AP, an operating mode change response frame comprising at least one of a TIM mode allowed by the AP, a reallocated association identification (AID), and information on a changed power save parameter, and performing at least one of the change of the TIM mode and the change of the power save parameter based on the information included in the operating mode change response frame.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: January 2, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jae Seung Lee, Hyoung Jin Kwon, Min Ho Cheong, Hee Jung Yu, Sok Kyu Lee
  • Patent number: 9860030
    Abstract: Methods and apparatus are provided for transmitting from a base station and for receiving from a low cost user equipment (UE) system information and for the low cost UE to determine subframes to receive repetitions of a transmission from the base station or to transmit repetitions of a transmission to the base station.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: January 2, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Aris Papasakellariou
  • Patent number: 9853600
    Abstract: A method includes determining one or more characteristics of a system that uses a power amplifier. The method also includes determining, based on the one or more determined characteristics, a switching speed and a supply voltage for the power amplifier. The method further includes modulating a power supply of the power amplifier according to the determined switching speed and supply voltage.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: December 26, 2017
    Assignee: RAYTHEON COMPANY
    Inventor: Uma S. Jha
  • Patent number: 9847899
    Abstract: A method for transmitting broadcast signals including encoding service data, mapping the encoded service data, and time interleaving the mapped service data. The time interleaving including block interleaving the mapped service data by writing cells of the mapped service data in a memory and reading the cells in the memory and spreading out the block interleaved service data over at least one signal frame. At least one Forward Error Correction (FEC) Block is included in at least one time interleaving (TI) Block for interleaving, and a number of FEC Blocks varies between TI Blocks. A virtual FEC Block is included ahead of the at least one FEC Block and virtual cells belonging to the virtual FEC Block are skipped during the reading. The method further includes modulating the time interleaved service data by an Orthogonal Frequency Division Multiplex (OFDM) scheme, and transmitting the broadcast signals carrying the modulated service data.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: December 19, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Jongseob Baek, Woosuk Ko, Seoyoung Back, Sungryong Hong
  • Patent number: 9847112
    Abstract: An apparatus includes a transmitter and a controller. The transmitter may be configured to transmit data stored in a memory. The controller may be configured to (i) train one or more transmit parameters of the transmitter to synchronize transmission of the data with a clock signal while in a first mode, (ii) save the transmit parameters in response to a command received while the transmitter is in the first mode, and (iii) configure the transmitter to transmit the data while in a second mode using the transmit parameters as learned while in the first mode.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: December 19, 2017
    Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.
    Inventor: Shwetal Arvind Patel
  • Patent number: 9844046
    Abstract: The present invention aims at allowing a demodulation reference signal (DMRS) pattern suitable for a terminal to be selected from among a plurality of DMRS patterns including Legacy DMRS and Reduced DMRS. Disclosed is a terminal including: reception section (21) that receives uplink control information; control section (23) that determines a specific mapping pattern from among a plurality of mapping patterns for an uplink DMRS on the basis of the control information; and DMRS generating section (24) that generates a DMRS according to the specific mapping pattern.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: December 12, 2017
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Lilei Wang, Kazuki Takeda, Ayako Horiuchi, Alexander Golitschek Edler Von Elbwart, Masayuki Hoshino, Yoshihiko Ogawa
  • Patent number: 9843401
    Abstract: A system and process that incorporates teachings of the subject disclosure may include, for example, an interference monitor configured to detect occurrences of unintended signals within a communications link. A communications link may carry a down-converted format of a satellite signal from an earth terminal to an integrated receiver and decoder for further network distribution. Depending upon the nature of any such detected unintended signals, the communications link can be “swapped out” for a redundant communications link carrying a down-converted format of the same satellite signal obtained by way of a redundant earth terminal. Other embodiments are disclosed.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: December 12, 2017
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Douglas Medina, Ronald Jones, Michael Peck
  • Patent number: 9832046
    Abstract: Transmission of baseband and carrier-modulated vector codewords, using a plurality of encoders, each encoder configured to receive information bits and to generate a set of baseband-encoded symbols representing a vector codeword; one or more modulation circuits, each modulation circuit configured to operate on a corresponding set of baseband-encoded symbols, and using a respective unique carrier frequency, to generate a set of carrier-modulated encoded symbols; and, a summation circuit configured to generate a set of wire-specific outputs, each wire-specific output representing a sum of respective symbols of the carrier-modulated encoded symbols and at least one set of baseband-encoded symbols.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: November 28, 2017
    Assignee: KANDOU LABS, S.A.
    Inventors: Ali Hormati, Armin Tajalli, Amin Shokrollahi
  • Patent number: 9831961
    Abstract: An adaptive envelope tracking calibration module executes a routine to calibrate a radio frequency (RF) transmitter in a communication device comprising an envelope tracking system. The routine includes receiving a selection of a calibration target power that is greater than a desired output power of the RF transmitter and determining an output power estimate for the power amplifier as a supply voltage for the power amplifier varies according to an output of the envelope tracking system. The routine further includes adaptively adjusting the calibration target power when the output power estimate is not greater than the calibration target power.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: November 28, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Pratik Kalpesh Patel, Jay Praful Desai
  • Patent number: 9831972
    Abstract: A method for establishing synchronization between a master clock and a slave clock. A transmitter near the master clock transmits a pulse sequence onto an electrical cable that extends between the transmitter and a receiver near the slave clock. Each pulse of the pulse sequence is either a null pulse (i.e., a zero pulse) or a pulse of exponential kind, depending a corresponding bit in a bit sequence. Each pulse of exponential kind has a leading edge pf exponential shape corresponding to the exponential coefficient ?. The bit sequence represents the sum of (a) a current timestamp of the master clock and (b) an adjustment value that represents the one-way time of-flight of the exponentially shaped leading edge through the cable. The receiver recovers the bit sequence from the pulse sequence, and loads the bit sequence into the slave clock, to establish synchronization.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: November 28, 2017
    Assignee: Board of Regents, The University of Texas System
    Inventor: Robert H. Flake
  • Patent number: 9825793
    Abstract: Methods and systems are provided that enable an OFDM transmitter to be used for transmitting conventional OFDM or a form of transformed OFDM. A technique is provided for transforming a coded and modulated sequence of samples prior to an IFFT that enables the transformed sequence of samples to be transmitted using conventional OFDM or transformed OFDM. The selection of a transform function for transforming the coded and modulated sequence of samples may be based on optimizing the transform function for particular operating conditions between the transmitter and receiver. In some embodiments of the invention OFDM and time transformed OFDM are multiplexed in time and/or frequency in a transmission frame. In some embodiments of the invention a pilot pattern is provided in which the pilot are sent using OFDM and data is sent using OFDM and/or transformed OFDM.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: November 21, 2017
    Assignee: Apple Inc.
    Inventors: Jianglei Ma, Wen Tong, Ming Jia, Hua Xu, Peiying Zhu, Hang Zhang
  • Patent number: 9819366
    Abstract: A wireless communication device including: a mixer configured to generate two mixed signal in a lower frequency band than a frequency of a local signal and two mixed signals in a higher frequency band than the frequency of the local signal by mixing the local signal with two intermediate frequency signals, and a filter configured to pass one of the two mixed signal in the lower frequency band and one of the two mixed signal in the higher frequency band.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: November 14, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Kazuaki Ando, Tokuro Kubo
  • Patent number: 9806837
    Abstract: An orthogonal frequency division multiplexing (OFDM) transmitter that includes an encoder, an interleaver, a symbol processor; and a transmission module; wherein the encoder is configured to encode a superframe to provide an encoded superframe; wherein the encoded superframe comprises a sequence of encoded frames; wherein the interleaver is configured to allocate multiple frequency sub-bands to each encoded frame of the encoded superframe by assigning adjacent frequency sub-bands to successive symbols of each encoded frame; wherein the symbol processor is configured to generate, for each encoded frame and according to the assignment of the multiple frequency sub-bands, an intermediate set of symbols; and wherein the transmission module is configured to transmit simultaneously, for each encoded frame, OFDM symbols that represents the intermediate set of symbols.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: October 31, 2017
    Assignee: Technion Research & Development Foundation Ltd.
    Inventors: Moshe Nazarathy, Amitay Bar, Aviv Shalom, Igor Tselniker
  • Patent number: 9806877
    Abstract: Disclosed are a calibration method and a calibration circuit. The calibration method and the calibration circuit effectively calibrate the mismatches between the first signal path and the second signal path of a transmitter by calibrating a plurality of tap coefficients of the FIR filter configured in the second signal path and optimizing the tap coefficients. The calibration and optimization for the tap coefficients of the FIR filter is according to differences between the electrical characteristics the DAC convertor and the LPF in the first signal path and differences between the DAC convertor and the LPF in the second signal path. These differences are obtained when the data transmission has not yet started by the transmitter (that is, when the transmitter is working in a training mode).
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: October 31, 2017
    Assignee: ALI CORPORATION
    Inventor: Yue-Yong Chen
  • Patent number: 9806861
    Abstract: The present invention relates to method of transmitting and receiving signals and a corresponding apparatus. One aspect of the present invention relates to a method of receiving a signal, which includes an L1 signaling region where the L1 signaling has an adaptive L1 block structure for increased spectrum efficiency in a channel bonding environment.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: October 31, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Woo Suk Ko, Sang Chul Moon
  • Patent number: 9806793
    Abstract: Disclosed is a relay method including: receiving, as input, respective reception signals by two receive antennas, the reception signals each including a reception signal resulting from multiplexing respective transmission signals transmitted by two transmission antennas in a first frequency band; performing frequency conversion on the reception signal received by one of the receive antennas so as to obtain a signal of a third frequency band; and performing frequency multiplexing on the signal having the third frequency band and the reception signal received by the other of the receive antennas.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: October 31, 2017
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 9807036
    Abstract: A method of communication between an Ethernet Media Access Controller (MAC) and a physical interface (PHY) is disclosed. The method includes establishing communication between the MAC and the PHY via a first serial link in accordance with a Serializer Deserializer (SERDES) protocol. In a data transfer mode, data is transferred along the first serial link. Idle frames are transferred within an idle time gap along the link in an idle mode. The PHY is managed by encoding Management Data Input/Output (MDIO) information in one or more MDIO frames, and transferring the one or more MDIO frames within the idle time gap along the first serial link.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: October 31, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Hongchun Yu, Honglu Chen, Chi Huang, Wenjun Zhang
  • Patent number: 9800260
    Abstract: An apparatus comprises a delta-sigma analog-to-digital converter (ADC) and baseband processing circuitry. The delta-sigma ADC includes a plurality of integrator stages connected in series, including a first integrator stage operatively coupled to an input of the delta-sigma ADC; a main quantizer circuit including a main ADC circuit and a main digital-to-analog converter (DAC) circuit, wherein an input to the main ADC circuit is operatively coupled to the plurality of integrator stages; and a first feedback circuit path operatively coupled from an output of the first integrator stage to the input of the delta-sigma ADC, wherein the first feedback circuit path is configured to subtract an output voltage of the first integrator stage from the input of the delta-sigma ADC. The baseband circuitry is configured to activate the first feedback circuit path when detecting that the input voltage increases to cause distortion in the delta-sigma ADC.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: October 24, 2017
    Assignee: Analog Devices Global
    Inventor: Debopam Banerjee
  • Patent number: 9787336
    Abstract: Embodiments of a mobile communication device and method for digital pre-distortion (DPD) are disclosed herein. The mobile communication device may scale a sequence of input samples by per-sample scale factors to generate a sequence of output samples for input to a power amplifier (PA), the input samples scaled to compensate for distortion of the PA. The mobile communication device may generate the scale factors based on per-sample inner products between a common weight vector and a per-sample distortion compensation vectors. The mobile communication device may generate the distortion compensation vectors based on vector outputs of predetermined distortion compensation functions. The mobile communication device may update the common weight vector based on a distortion error sequence between the sequence of output samples and a sequence of feedback samples.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: October 10, 2017
    Assignee: Intel IP Corporation
    Inventor: Armando Cova
  • Patent number: 9781012
    Abstract: The behavior of multiple users with access to a multi-tenant resource can be monitored and compliance enforced by monitoring state information for each user. The state information can be captured across a level of a network environment, such that any activity across that layer can be monitored and the data aggregated to give a global view of user behavior. If user behavior is determined to fall outside an acceptable range of behavior, any of a number of remedial actions can be taken, which can include notifying the user, billing the user for the inappropriate behavior, or modifying that behavior outside of the control of the user.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: October 3, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Eric Jason Brandwine, Swaminathan Sivasubramanian, Bradley Eugene Marshall, Tate Andrew Certain
  • Patent number: 9780920
    Abstract: The present disclosure relates to an apparatus and method supportive of distributed turbo coding based on relay network utilizing a noisy network coding scheme. For this, included is a relay node operating as a component encoder to relay a signal from a source node to a next node in a distributed turbo coding scheme. The relay node quantizes the signal transmitted from the source node and then interleaves the quantized signal using a predetermined pattern to distinguish the signal transmitted from the source node from a signal to be output from an opposing node, so that the signal transmitted from the source node is relayed to the next node based on a noisy network coding scheme.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: October 3, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung Hoon Lim, Won-Jong Noh, Jong-Bu Lim, Sang-Seok Yun, Sung-Ho Chae, Jeong-Seok Ha
  • Patent number: 9780850
    Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. A precoding matrix is generated for multi-antenna transmission based on precoding matrix indicator (PMI) feedback, wherein the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first codebook and a second codebook. In one embodiment, the first codebook comprises at least a first precoding matrix constructed with a first group of adjacent Discrete-Fourier-Transform (DFT) vectors. In another embodiment, the first codebook comprises at least a second precoding matrix constructed with a second group of uniformly distributed non-adjacent DFT vectors.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: October 3, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Eko Onggosanusi, Runhua Chen, Ralf Bendlin
  • Patent number: 9780975
    Abstract: A Faster-Than-Nyquist (FTN) signal transmission apparatus and method thereof. The signal transmission apparatus includes a pilot interference estimator and compensator configured to estimate interference on pilot symbols by a Faster-Than-Nyquist (FTN) signal generated by FTN modulating a sequence of data symbols, and generate a compensated pilot symbol sequence to cancel the estimated interference; a pilot FTN modulator configured to generate an FTN pilot signal in which inter-pilot symbol interference does not occur, by performing FTN pulse-shaping on the compensated pilot symbol sequence; and a transmitter configured to transmit an FTN data signal and the FTN pilot signal.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: October 3, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang Woon Kwak, Joung Il Yun, Myung Sun Baek, Young Su Kim, Hyoung Soo Lim, Nam Ho Hur
  • Patent number: 9781560
    Abstract: Methods, systems, and devices are described for wireless communication. An example method includes receiving, by a first wireless communication device having a plurality of antennas disposed at a localized position, a plurality of fine timing management (FTM) messages from a second wireless communication device. The example method includes transmitting, by the first wireless communication device, a plurality of FTM responses to the second wireless communication device. Each of the plurality of FTM responses may be transmitted using a different antenna of the first wireless communication device. The example method also includes estimating a range between the first wireless communication device and the second wireless communication device based at least in part on the plurality of FTM messages.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: October 3, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Beomsup Kim, Ning Zhang, Xiaoxin Zhang
  • Patent number: 9774481
    Abstract: Systems and methods for using travelling pilots for channel estimation are described herein. In one aspect, wireless communications apparatus is described that comprises a processor configured to divide a plurality of tones on which pilot signals are to be transmitted among a plurality of symbols, wherein each symbol includes less than all of the plurality of tones and the plurality of symbols includes at least a subset of the plurality of tones. The wireless communication apparatus further comprises a transmitter configured to transmit, during a given symbol, pilot signals on the tones included in the given symbol, wherein the tones over which the pilot signals are transmitted are changed from symbol to symbol.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: September 26, 2017
    Assignee: QUALCOMM, Incorporated
    Inventors: Lin Yang, Didier Johannes Richard Van Nee, Hemanth Sampath, Sameer Vermani, Tao Tian
  • Patent number: 9768996
    Abstract: One or more first padding bits are added to information bits to be included in a data portion of a data unit such that the information bits, after being encoded, fill one or more OFDM symbols up to a boundary within a last OFDM symbol. The information bits and the first padding bits are encoded to generate coded bits. After encoding, coded bits corresponding to the last OFDM symbol are padded, or constellation points generated based on the coded bits corresponding to the last OFDM symbol are padded, such that the padded coded bits or the padded constellation points occupy a remaining portion of the last OFDM symbol after the boundary. The last OFDM symbol of the data portion is generated to include the coded information bits corresponding to the last OFDM symbol, the first padding bits and second padding bits or padding constellation points added after encoding.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: September 19, 2017
    Assignee: Marvell World Trade Ltd.
    Inventors: Hongyuan Zhang, Xiayu Zheng, Rui Cao, Mingguang Xu, Sudhir Srinivasa, Jie Huang
  • Patent number: 9769692
    Abstract: A wireless transmit/receive unit (WTRU) and a dynamic spectrum management (DSM) engine are described. The WTRU includes a transceiver, a radio frequency (RF) spectrum sensing unit and a processing unit. The transceiver transmits over a wireless link. The RF spectrum sensing unit measures information indicative of usage of a spectrum by other devices. The processing unit detects a change in performance of the wireless link, controls the transceiver to transmit a notification to a DSM engine indicating that the change in the performance of the wireless link was detected on a condition that the processing unit detects the change in performance of the wireless link, and receives a sensing task request for the WTRU to measure the information indicative of the usage of the spectrum by other devices based on the notification transmitted to the DSM engine indicating that the change in the performance of the wireless link was detected.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: September 19, 2017
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Martino M. Freda, Alpaslan Demir, Athmane Touag, Phillip L. Leithead, Amith V. Chincholi, Jean-Louis Gauvreau
  • Patent number: 9763123
    Abstract: Methods and apparatus are disclosed for determining reliability of wireless carriers. An example method includes extracting channel information from messages transmitted to mobile devices at a plurality of locations to determine a quantity of available channels, segregating the extracted channel information into a first group corresponding to channels of a first carrier and a second group corresponding to channels of a second carrier, and determining, with a processor, a relative reliability between the first carrier and the second carrier based on a respective quantity of channels in the first group and the second group.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: September 12, 2017
    Assignee: The Nielsen Company (US), LLC
    Inventor: Dominic H. Ngai
  • Patent number: 9756610
    Abstract: Disclosed are a broadcast signal transmitting apparatus, a broadcast signal receiving apparatus, and a broadcast signal transceiving method in the broadcast signal transmitting and receiving apparatuses.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: September 5, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Hotaek Hong, Sangchul Moon, Woosuk Ko
  • Patent number: 9755708
    Abstract: A user equipment device has a control information decoder configured to receive and decode an uplink scheduling grant. A transmit module is configured to receive a rank indicator (RI) extracted by the decoder and adapt a transmission rank in response to the RI. At least two transmit antennas are configured to transmit according to the RI.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: September 5, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Eko N. Onggosanusi, Tarik Muharemovic, Anand G. Dabak, Runhua Chen
  • Patent number: 9749023
    Abstract: Methods and apparatus adapted to address asymmetric conditions in a multi-antenna system. In one embodiment, the multi-antenna system comprises a wireless (e.g., 3G cellular) multiple-input, multiple-output (MIMO) system, and the methods and apparatus efficiently utilize transmitter and receiver resources based at least in part on a detected asymmetric condition. If an asymmetric condition is detected by the transmitter on any given data stream, the transmitter can decide to utilize only a subset of the available resources for that stream. Accordingly, the signal processing resources for that data stream are adapted to mirror the reduction in resources that are necessary for transmission. The transmitter signals the receiver that it will only be using a subset of the resources available, and the receiver adapts its operation according to the signaling data it receives. The multi-antenna system can therefore reduce power consumption as well as increasing spectral efficiency on the network.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: August 29, 2017
    Assignee: APPLE INC.
    Inventor: Hyung-Nam Choi
  • Patent number: 9742612
    Abstract: Embodiments of the present invention relate to the field of communications, and provide a method and a device for transmitting data by using a multidimensional constellation diagram, which can further improve bit error rate-signal to noise ratio performance by means of a multidimensional constellation diagram. The method is: First, bit data is mapped, by using an n-dimensional constellation diagram, into a column vector including n real numbers, then the n real numbers included in the column vector are modulated by using a resource element and sent, and after demodulating the n real numbers from a received signal, a receiving device finds, in the n-dimensional constellation diagram, a constellation point with coordinate values having a closest Euclidean distance to a point with coordinates being the n real numbers, and finally maps the coordinate values of the constellation point back into the bit data.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 22, 2017
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Qizhi Zhang
  • Patent number: 9742832
    Abstract: Disclosed is a transmission apparatus or the like that is able to transmit information efficiently. The transmission apparatus, on the basis of history information which includes a service identifier and a message identifier associated therewith, transmits a difference between a third message having a large similarity ratio to a second message included in a specific service and the second message, and a message identifier identifying the second message via a communication network.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: August 22, 2017
    Assignee: NEC CORPORATION
    Inventor: Kyohei Ando
  • Patent number: 9735942
    Abstract: Aspects of the present disclosure provide techniques and apparatus for physical broadcast channel (PBCH) coverage enhancements, for example, for machine type communications (MTC). In aspects, the PBCH coverage enhancements may be applied by non-MTC devices. A method for wireless communications typically performed by a base station (BS) is provided. The method generally includes determining a set of resources for a new physical broadcast channel (PBCH) with enhanced coverage relative to a legacy PBCH and communicating to at least one user equipment (UE) based on the determined set of resources for the new PBCH. In aspects, the new PBCH may be transmitted on a subframe allocated for communicating with MTC devices (MTC subframe).
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: August 15, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Hao Xu, Wanshi Chen, Peter Gaal, Tingfang Ji
  • Patent number: 9734010
    Abstract: A method for encoding an input data block for storage in q-level cells of solid-state memory includes producing a preliminary block from the input data block by modulation encoding at least part of the input block into a first group of qary symbols via a first drift-tolerant encoding scheme, the preliminary block comprising the first group of qary symbols and any remainder of the input block not encoded via the first encoding scheme; generating parity data for the preliminary block via an error-correction encoding scheme; modulation encoding the parity data and any remainder of the input block into a second group of qary symbols via a second drift-tolerant encoding scheme; and supplying the qary symbols of the first and second groups for storage in respective q-level memory cells.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: August 15, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Thomas Mittelholzer, Nikolaos Papandreou, Charalampos Pozidis
  • Patent number: 9729375
    Abstract: A method and an apparatus for receiving broadcast signals thereof are disclosed. The method for receiving broadcast signals, the method comprises receiving the broadcast signals, demodulating the received broadcast signals by an OFDM (Orthogonal Frequency Division Multiplex) scheme, parsing a signal frame from the demodulated broadcast signals, MIMO (Multiple-Input and Multiple-Output) decoding service data in the parsed signal frame, decoding signaling data in the parsed signal frame and decoding the MIMO decoded service data.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: August 8, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Jinyong Choi, Woosuk Ko, Sangchul Moon, Sungryong Hong
  • Patent number: 9729291
    Abstract: Embodiments of the present invention relate to the technical field of communications, and provide a method and device for transmitting a reference signal. The method for transmitting a reference signal comprises: a base station determining an antenna port of a reference signal corresponding to a broadcast channel; the base station determining a complex valued modulation symbol of the reference signal according to a first parameter of the reference signal, wherein the first parameter of the reference signal is determined by the number of resource blocks occupied by the broadcast channel; and the base station transmitting the determined complex valued modulation symbol of the reference signal to a user terminal on the determined antenna port of the reference signal. The present invention can be used in an LTE wireless communication system.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: August 8, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhenfei Tang, Yuanjie Li
  • Patent number: 9729370
    Abstract: The present invention provides a method for transmitting and receiving data in a single carrier frequency division multiple access system to which a precoding matrix is applied, and to a transmitting/receiving apparatus for same. The method for transmitting data comprises the steps of: applying selected mapping algorithm (SLM) sequences of an SLM sequence subset corresponding to a precoding matrix, to respective data; selecting the SLM sequence in which each of the applied data has the smallest peak to average power ratio (PAPR) value; and transmitting the index of the selected SLM sequence and data to which the selected SLM sequence is applied.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: August 8, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jinxia Cheng, Sang Boh Yun, Sung Soo Hwang, Seung Hee Han, Sunghwan Kim
  • Patent number: 9730196
    Abstract: Systems and methods presented herein provide for an LTE wireless communication system operating in an RF band with a conflicting wireless system. The LTE system includes a first eNodeB operable to transmit downlink communications to UEs in the RF band and to receive uplink communications from the UEs in the RF band. The first eNodeB is also operable to transmit an LTE control channel across a portion of the RF band, to time divide the LTE control channel into a plurality of subchannels, and to occupy a first of the subchannels. A second eNodeB is operable to detect the LTE control channel and to occupy a second of the subchannels proximate in time to the first subchannel of the first eNodeB.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: August 8, 2017
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Belal Hamzeh, Jennifer Andreoli-Fang
  • Patent number: 9722841
    Abstract: Disclosed are techniques for channel-based coding for wireless communications. A transmitter includes circuitry and multiple antennas. The circuitry selects a subset of the antennas, determines a respective channel response for each of the antennas in the subset, generates a respective coded system for each of the antennas in the subset, and transmits the coded symbols using the antennas in the subset.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: August 1, 2017
    Assignee: UNIVERSITY OF SOUTH FLORIDA
    Inventors: Ertugrul Guvenkaya, Huseyin Arslan
  • Patent number: 9722722
    Abstract: A data transceiver module, data transmission system incorporating same and methods related thereto, which include optical transmitters configured to receive an information bearing signal and generate an optical signal having a wavelength different from wavelengths generated by others of the plurality of optical transmitters; optical receivers configured to receive an optical signal having a wavelength matching one of the plurality of optical transmitters and convert it to an information bearing electrical signal; and a four level pulse-amplitude-modulator (PAM4) chip generating a pulse-amplitude-modulated information bearing signal input to at least one optical transmitter of the plurality of optical transmitters and receiving the information bearing from at least one optical receiver of the plurality of optical receivers and converting it to an information signal using pulse amplitude demodulation. Alternative embodiments include coherent-detection-based optical coherent receiver and coherent transmitter.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: August 1, 2017
    Assignee: NEOPHOTONICS CORPORATION
    Inventor: Winston I. Way
  • Patent number: 9722591
    Abstract: A phase adjustment device includes: a detection signal generator configured to generate a pair of first and second detection signals for detecting a phase difference between two signals whose phases have been adjusted by two phase adjusters, respectively, a maximum sensitivity phase difference of one of the first and second detection signals being not overlap with that of the other, and detection sensitivity of the phase difference becoming maximum at the maximum sensitivity phase difference; a detection signal selector configured to select one of the first and second detection signals whose predetermined range around the maximum sensitivity phase difference covers a preset phase difference; and a phase controller configured to control an amount of phase-adjusting by at least one of the two phase adjusters based on a difference between the phase difference detected within the predetermined range using the selected detection signal and the preset phase difference.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: August 1, 2017
    Assignee: FUJITSU LIMITED
    Inventor: Toshihiro Shimura
  • Patent number: 9722816
    Abstract: There is provided a method for processing a set of input symbols. The method is performed by a transmitter. The method comprises acquiring a set of input symbols. The method comprises generating a set of precoded symbols from the set of input symbols by subjecting the set of input symbols to a coding vector. The method comprises generating a transmission signal comprising a sequence of pulse forms from the set of precoded symbols by pulse shaping the set of precoded symbols. The coding vector is based on a model vector modelling intersymbol interference experienced by the pulse forms.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: August 1, 2017
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventor: Martin Sjödin