Transmitter Patents (Class 375/135)
  • Patent number: 10651944
    Abstract: An optical transmitter of an optical data transmission system transmitting data through an optical fiber transmission path includes a main signal generator that converts first transmission data into a predetermined signal format to generate a first signal, a DCSK modulator that DCSK-modulates second transmission data to generate a second signal, a signal-multiplexer that performs time-division multiplexing of the first signal and the second signal, and an electro-optical converter that converts a multiplexed signal obtained by the time-division multiplexing of the signal-multiplexer from an electric signal into an optical signal, and outputs the optical signal to the optical fiber transmission path.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: May 12, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Kengo Horikoshi, Seiji Okamoto, Asuka Matsushita, Mitsuteru Yoshida, Fukutaro Hamaoka, Yoshiaki Yamada, Yoshiaki Kisaka
  • Patent number: 10623084
    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: June 25, 2018
    Date of Patent: April 14, 2020
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10613483
    Abstract: An integrated circuit device includes: an AFE circuit (analog front-end circuit) that receives a first signal and a second signal, carries out waveform shaping of the first signal and waveform shaping of the second signal, outputs the first signal whose waveform is shaped to a first signal line, and outputs the second signal whose waveform is shaped to a second signal line; and a time-to-digital converter that receives the first signal from the AFE circuit via the first signal line, receives the second signal from the AFE circuit via the second signal line, and converts a time difference between transition timings of the first signal and the second signal into a digital value. At least one of the first signal line and the second signal line has redundant wiring for isometric wiring.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: April 7, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Fumikazu Komatsu, Akio Tsutsumi
  • Patent number: 10608696
    Abstract: A method and apparatus for communicating with a machine type communication user equipment (MTC UE) in a wireless communication system is provided. A base station (BS) configures a radio frame for the MTC UE based on a duration of a frequency hopping subframe group (FH-SFG), and communicates with the MTC UE by using the configured radio frame.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: March 31, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Yunjung Yi, Joonkui Ahn, Hanbyul Seo, Suckchel Yang
  • Patent number: 10547347
    Abstract: Facilitating multi-slot frequency hopping can comprise generating configuration data associated with configuring a mobile device with a multi-slot operation, associated with slots of the mobile device, for sending uplink channel control data or traffic channel data. Additionally, facilitating multi-slot frequency hopping can comprise transmitting the configuration data to the mobile device, resulting in a multi-slot configuration of the mobile device, wherein the configuration data comprises hopping patterns to be used by the slots.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: January 28, 2020
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: SaiRamesh Nammi, Arunabha Ghosh
  • Patent number: 10542528
    Abstract: A method and apparatus provide a physical uplink channel in resource blocks. Scheduling information can be received. The scheduling information can be to transmit a first physical uplink channel within a slot. The slot can include a plurality of symbols. The slot can include the first physical uplink channel and a second physical uplink channel. The first physical uplink channel can be shorter in duration than the second physical uplink channel. One or more allocated resource blocks for the first physical uplink channel can be determined based on a sub-band group and one or more resource block groups within the sub-band group. The sub-band group can include one or more sub-bands. Each sub-band can include one or more resource block groups. Each resource block group can include one or more resource blocks. A resource block can include one or more contiguous resource elements in the frequency domain.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: January 21, 2020
    Assignee: Motorola Mobility LLC
    Inventors: Hyejung Jung, Ravikiran Nory, Vijay Nangia, Robert Love
  • Patent number: 10432254
    Abstract: A user terminal is disclosed including a receiver that receives a downlink signal that is transmitted in repetitions in narrow bands to which frequency hopping is applied, and a processor that specifies a pattern of the applied frequency hopping based on a starting index that indicates a first narrow band in the narrow bands and a frequency offset that is a shift in a frequency direction from the first narrow band. The processor causes the receiver to receive the downlink signal using the specified pattern. Each of the narrow bands is a part of a system band. The user terminal communicates using the narrow bands only. The downlink signal starts being allocated to the first narrow band.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: October 1, 2019
    Assignee: NTT DOCOMO, INC.
    Inventors: Kazuaki Takeda, Ruifeng Ma, Qin Mu, Liu Liu, Huiling Jiang
  • Patent number: 10389404
    Abstract: Aspects of methods and systems for PAPR reduction in a microwave backhaul outdoor unit are provided.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: August 20, 2019
    Assignee: MAXLINEAR, INC.
    Inventors: Stephane Laurent-Michel, Raghuraman Mariappan
  • Patent number: 10389369
    Abstract: An apparatus is comprised of a processor, a tuning voltage generator, a tuning circuit, an amplifier, and a voltage-controlled oscillator (VCO). The processor generates a tuning voltage command and a modulation command signal. The tuning voltage generator, coupled to the processor, receives the tuning voltage command and generates a baseline analog tuning signal based on the received tuning voltage command. The amplifier, coupled to the tuning voltage generator, receives the baseline analog tuning signal and the modulation signal, and generates a tuning signal based on the received baseline analog tuning signal and the received modulation command signal. The VCO, coupled to the amplifier, receives the tuning signal, generates a modulated radio frequency output signal based on the received tuning signal, and outputs the modulated radio frequency output signal, the modulated radio frequency output signal emulating a communication waveform.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: August 20, 2019
    Assignee: IXI TECHNOLOGY HOLDINGS, INC.
    Inventors: Daniel Hyman, Jeffrey Norris, Joe Truong, Michael Dekoker, Anthony Aquino
  • Patent number: 10362574
    Abstract: Disclosed techniques provide for different uplink resource allocation schemes in transmissions that use different shared radio frequency spectrum bands. In some cases, the different shared radio frequency spectrum bands may have different transmission characteristics or parameters, and associated resource allocation schemes may be selected to provide transmissions that are more likely to comply with the transmission characteristics or parameters associated with a particular band. In some cases, resource allocation types may be identified based on one band and mapped to identify uplink resources for an uplink transmission on a different shared radio frequency spectrum band.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: July 23, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Arumugam Chendamarai Kannan, Chirag Sureshbhai Patel, Tamer Kadous
  • Patent number: 10277322
    Abstract: Embodiments of the present disclosure may relate to a transmitter to transmit a radio frequency (RF) signal to a receiver via a dielectric waveguide where the transmitter includes a plurality of mixers to generate modulated RF signals and a combiner to combine the modulated RF signals. Embodiments may also include a receiver to receive, from a dielectric waveguide, a RF signal where the receiver includes a splitter to split the RF signal into a plurality of signal paths, a plurality of filters, and a plurality of demodulators. Embodiments may also include a dielectric waveguide communication apparatus that may include the transmitter and the receiver. Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: April 30, 2019
    Assignee: Intel Corporation
    Inventors: Georgios C. Dogiamis, Sasha N. Oster, Telesphor Kamgaing, Emanuel Cohen
  • Patent number: 10225841
    Abstract: A distributed antenna system is provided that frequency shifts the output of one or more microcells to a 60 GHz or higher frequency range for transmission to a set of distributed antennas. The cellular band outputs of these microcell base station devices are used to modulate a 60 GHz (or higher) carrier wave, yielding a group of subcarriers on the 60 GHz carrier wave. This group will then be transmitted in the air via analog microwave RF unit, after which it can be repeated or radiated to the surrounding area. The repeaters amplify the signal and resend it on the air again toward the next repeater. In places where a microcell is required, the 60 GHz signal is shifted in frequency back to its original frequency (e.g., the 1.9 GHz cellular band) and radiated locally to nearby mobile devices.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: March 5, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Farhad Barzegar, Donald J. Barnickel, Jr., George Blandino, Irwin Gerszberg, Paul Shala Henry, Thomas M. Willis, III
  • Patent number: 10193676
    Abstract: A pilot allocation method for a multi-antenna system and a pilot allocation apparatus are provided. The method comprises: determining the number of pilots to be allocated and the number of training cycles at least according to the number of users in each cell, and determining a pilot allocation scheme of the each cell according to the number of pilots to be allocated and the number of training cycles. The determining a pilot allocation scheme of the each cell can comprise determining pilots allocated for users in the l-th cell used during each training cycle, and during each training cycle, allocating pilots of at least the k-th user of the l-th cell to different users in other cells of the system. By allocating pilots allocated to a desired user to different users during each training cycle, pilot contamination can be randomized during several different continuous training cycles, thereby providing a basis for the later accurate channel estimation.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: January 29, 2019
    Assignee: BEIJING ZHIGU RUI TUO TECH CO., LTD
    Inventors: Zhilin Chen, Chenyang Yang, Weicai Huang
  • Patent number: 10187111
    Abstract: The present disclosure relates to a communication scheme and system which fuse a 5G communication system for supporting a higher data transfer rate than a 4G system with IoT technology, and a system thereof. The present disclosure may be applied to smart services such as smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security and safety services, etc., based on 5G communication technologies and IoT related technologies.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: January 22, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Peng Xue, Nam-Jeong Lee, Cheol Jeong, Hyun-Seok Ryu, Sung Ho Chae
  • Patent number: 10148401
    Abstract: It is possible to provide a radio communication terminal device and a radio transmission method which can improve reception performance of a CQI and a reference signal. A phase table storage unit stores a phase table which correlates the amount of cyclic shift to complex coefficients {w1, w2} to be multiplied on the reference signal. A complex coefficient multiplication unit reads out a complex coefficient corresponding to the amount of cyclic shift indicated by resource allocation information, from the phase table storage unit and multiplies the read-out complex coefficient on the reference signal so as to change the phase relationship between the reference signals in a slot.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: December 4, 2018
    Assignee: Sun Patent Trust
    Inventors: Tomofumi Takata, Daichi Imamura, Seigo Nakao, Sadaki Futagi, Takashi Iwai, Yoshihiko Ogawa
  • Patent number: 10136435
    Abstract: A method for decoding an orthogonal frequency division multiplex (OFDM) data unit transmitted via an OFDM communication channel is described. A first OFDM symbol of the OFDM data unit is received at a communication device via a first sub-channel of the OFDM communication channel. A candidate OFDM symbol is detected by the communication device on a second sub-channel of the OFDM communication channel. A bandwidth of the OFDM communication channel is detected by the communication device based on the detected candidate OFDM symbol. At least one OFDM symbol of the OFDM data unit is decoded by the communication device based on the detected bandwidth.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: November 20, 2018
    Assignee: Marvell International Ltd.
    Inventors: Xiayu Zheng, Bo Yu, Hongyuan Zhang
  • Patent number: 10123309
    Abstract: An example apparatus for discovery and acquisition of a control channel using guard bands is provided and includes a processor; and a memory in communication with the memory. The processor configured is to determine that a whitespace map is unavailable for communication between a first device and a second device; determine that a guard band is to be used for a control channel between the first device and the second device; send a first message to the second device including an indication to the second device that the second device is use a guard band to maintain communication with the first device; and send a second message to the second device including control channel tuning information associated with the guard band.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: November 6, 2018
    Assignee: Cisco Technology, Inc.
    Inventors: Shwetang Sureshkumar Acharya, Raghavendra Kankanhalli Sudheendra, Nalini Sankaranarayanan, Rajaguru Veluchamy, Srinath Gundavelli
  • Patent number: 10070418
    Abstract: The present disclosure includes systems and techniques relating to wireless devices. A described technique includes determining wireless resource allocations (e.g., spatial wireless channel allocations, downlink slot assignments, uplink slot assignments, and frequency sub-band assignments that correspond respectively to frequency sub-bands of a frequency band) in a time domain, a spatial wireless channel domain, and a frequency domain to coordinate communications with wireless devices. The technique further includes generating and transmitting information in one or more frames that directs wireless communications based on the wireless resource allocations.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: September 4, 2018
    Assignee: Marvell World Trade Ltd.
    Inventors: Yong Liu, Raja Banerjea, Hongyuan Zhang, Harish Ramamurthy
  • Patent number: 10044432
    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: June 8, 2017
    Date of Patent: August 7, 2018
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10009158
    Abstract: Provided are resource mapping and receiving methods and devices and signalling notification and acquisition methods and devices. The resource mapping method includes that: an evolved NodeB (eNB) maps a Channel State Information Reference Signal (CSI-RS) onto multiple resource elements in a manner of frequency division multiplexing and/or time division multiplexing and/or code division multiplexing; and/or the eNB maps an Interference Measure Resource (IMR) onto multiple resource elements in a manner of frequency division multiplexing and/or time division multiplexing. By the technical solution, the effects of improving measurement performance of a system, ensuring more accurate adaptive transmission and improving spectral efficiency of the system are further achieved.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: June 26, 2018
    Assignee: ZTE CORPORATION
    Inventors: Senbao Guo, Yunfeng Sun, Bo Dai, Junfeng Zhang
  • Patent number: 9985701
    Abstract: Techniques are disclosed relating to signaling and frame structure for massive MIMO communication systems. In some embodiments, an apparatus is configured to receive an uplink pilot symbol from a mobile device over a first channel and receive uplink data from the mobile device over the first channel, where the uplink data is included in one or more orthogonal frequency division multiplexing (OFDM) symbols at a symbol rate. In these embodiments, the apparatus is configured to, determine channel information based on the pilot symbol, precode downlink data based on the channel information, and transmit the precoded downlink data to the mobile device. In these embodiments, a transition interval between receiving the uplink pilot symbol and beginning to transmit the precoded downlink data corresponds to less than five OFDM symbols at the symbol rate. This may facilitate reciprocity-based precoding for fast-moving mobile devices, in some embodiments.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: May 29, 2018
    Assignee: NATIONAL INSTRUMENTS CORPORATION
    Inventors: Ian C. Wong, Karl F. Nieman, Nikhil U. Kundargi
  • Patent number: 9960849
    Abstract: Embodiments of the present disclosure may relate to a transmitter to transmit a radio frequency (RF) signal to a receiver via a dielectric waveguide where the transmitter includes a plurality of mixers to generate modulated RF signals and a combiner to combine the modulated RF signals. Embodiments may also include a receiver to receive, from a dielectric waveguide, a RF signal where the receiver includes a splitter to split the RF signal into a plurality of signal paths, a plurality of filters, and a plurality of demodulators. Embodiments may also include a dielectric waveguide communication apparatus that may include the transmitter and the receiver. Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: May 1, 2018
    Assignee: Intel Corporation
    Inventors: Georgios C. Dogiamis, Sasha N. Oster, Telesphor Kamgaing, Emanuel Cohen
  • Patent number: 9875646
    Abstract: An approach for supervision of an audio path within an audio system that conserves power while operating in battery mode by temporarily turning off pre-determined audio components of the audio system when not performing supervision tasks and no audio is present on the audio path.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: January 23, 2018
    Assignee: Siemens Schweiz AG
    Inventors: Harald Schermann, Leonid Ayzenshtat
  • Patent number: 9793964
    Abstract: Some demonstrative embodiments include apparatus, system and method of communicating a Multiple-Input-Multiple-Output (MIMO) transmission with Golay Sequence Set (GSS). For example, an apparatus may include logic and circuitry configured to cause a wireless station to generate a Golay Sequence Set (GSS) including a plurality of complementary Golay sequence pairs based on a plurality of weight vectors, the plurality of weight vectors including one or more weight vectors corresponding to one or more respective stream numbers, which are equal to or greater than 9; and transmit a Multiple-Input-Multiple-Output (MIMO) transmission over a plurality of spatial streams, the MIMO transmission including at least one field transmitted over a spatial stream having a stream number equal to or greater than 9, the field is based on a complementary Golay sequence pair of the plurality of complementary Golay sequence pairs, which is based on a weight vector corresponding to the stream number.
    Type: Grant
    Filed: December 26, 2016
    Date of Patent: October 17, 2017
    Assignee: INTEL CORPORATION
    Inventors: Artyom Lomayev, Iaroslav P. Gagiev, Alexander Maltsev, Michael Genossar, Carlos Cordeiro
  • Patent number: 9781706
    Abstract: A wireless transmit/receive unit includes at least one processor that receives a high speed physical downlink shared channel, and in response, transmits at least one random access channel preamble followed by ACK/NACK and channel quality indicator (CQI) information. The at least one random access channel preamble is selected from a set of random access preambles reserved for the ACK/NACK and CQI information.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: October 3, 2017
    Assignee: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Guodong Zhang, Christopher R. Cave, Guang Lu, Paul Marinier, Arty Chandra, Sudheer A. Grandhi
  • Patent number: 9717094
    Abstract: A method includes scheduling at least one resource for a Device-to-Device (D2D) transmission control channel (DCCH) carrying a D2D control information (D2DCI) message, transmitting, by a first UE, the DCCH on the at least one DCCH resource to at least one second UE, scheduling at least one resource for a D2D data channel (DDCH), and transmitting, by the first UE, the DDCH on the at least one DDCH resource to the at least one second UE. A UE includes one or multiple antenna, and a processing circuitry configured to schedule at least one resource for a DCCH, transmit the DCCH on the at least one DCCH resource, to at least one second UE through the one or more multiple antenna, schedule at least one resource for a DDCH, and transmit the DDCH on the at least one DDCH resource, to the at least one second UE.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: July 25, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Thomas David Novlan, Young-Han Nam, Boon Loong Ng
  • Patent number: 9654312
    Abstract: The present invention relates to a frequency region equalization method and an apparatus therefor in a cellular environment on the basis of a QAM-FBMC system. A method for receiving a signal by a receiver according to one embodiment of the present invention may include: performing channel estimation; comparing a minimum channel gain with a predetermined first threshold value; and performing layered detection when the minimum channel gain is smaller than the first threshold value. According to one embodiment of the present invention, a gain can be acquired in terms of a BER even while a structure of a symbol level equalizer is maintained.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: May 16, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dongkyu Sim, Chungyong Lee, Taeyoung Kim
  • Patent number: 9609633
    Abstract: The present invention relates to a data transmitting method using a bandwidth request channel and a user terminal and a base station conducting the same. The present invention provides a communication method by a user terminal which transmits data to a base station via a bandwidth request channel, including: generating a preamble for bandwidth request; determining whether a message for the bandwidth request is generated; generating a first signal value to be operated with the preamble when it is determined that the message is generated and generating a second signal value to be operated with the preamble when it is determined that the message is not generated; operating the preamble with the generated first signal value or second signal value; and transmitting a signal including the operated preamble to the base station, thereby reducing overhead occurring when the bandwidth request information is demodulated.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: March 28, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyeong Sook Park, Jun Woo Kim, Youn Ok Park
  • Patent number: 9531390
    Abstract: An integrated circuit includes first and second data channel circuits and first and second inductor-capacitor (LC) tank oscillator circuits. The first data channel circuit generates a first data signal in response to a first clock signal. The second data channel circuit generates a second data signal in response to a second clock signal. The frequencies of the first and second clock signals are substantially the same. The first LC tank oscillator circuit generates a first periodic signal. The first clock signal is generated in response to the first periodic signal. The second LC tank oscillator circuit generates a second periodic signal. The second clock signal is generated in response to the second periodic signal. The first and second LC tank oscillator circuits generate non-overlapping frequency ranges for the first and second periodic signals.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: December 27, 2016
    Assignee: Altera Corporation
    Inventors: Dong-Myung Choi, David Mendel
  • Patent number: 9525515
    Abstract: A broadcast signal receiver is disclosed. A broadcast signal receiver according to an embodiment of the present invention comprises a constellation mapper for symbol-demapping by using the signaling information as LLR values; a bit deinterleaver for bit multiplexing and block deinterleaving of the signaling information; an FEC decoder for FEC decoding the signaling information; and a descrambler for descrambling the signaling information.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: December 20, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Jongwoong Shin, Jinwoo Kim, Woosuk Ko, Sungryong Hong
  • Patent number: 9525759
    Abstract: In a wireless communication system wherein communication devices exchange information utilizing data units that conform to a first format, wherein the first format includes a short training field (STF) spread with a first spread code, a physical layer (PHY) data unit that conforms to a second format and is for transmitting PHY control information is generated. Generating the PHY data unit includes generating a first portion of the PHY data unit to indicate the PHY data unit conforms to the second format, wherein the first portion of the PHY data unit includes an STF spread with a second spread code different than the first spread code. A second portion of the PHY data unit is generated according to the second format, wherein the second portion of the PHY data unit omits header fields specified by the first format.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: December 20, 2016
    Assignee: Marvell World Trade Ltd.
    Inventors: Hongyuan Zhang, Songping Wu, Hui-Ling Lou, Rohit U. Nabar
  • Patent number: 9331762
    Abstract: A wireless communication system is disclosed. The wireless communication system performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N and M are integers larger than or equal to 2 and N>M).
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: May 3, 2016
    Assignee: Sony Corporation
    Inventor: Tomoya Yamaura
  • Patent number: 9329914
    Abstract: A method for all-to-all message exchange between program tasks including N>1 hierarchy levels ln, n=1 to N, in which a first level l1 includes a plurality of group tasks and each higher level l(n>1) includes at least one group of level l(n?1) groups to which that task belongs in respective hierarchy levels of the network topology; sending a message via the interconnection network to a respective destination task whose hierarchical identifier is determined; and using the hierarchical identifier to send the program task and the network topology, such that the resulting exchange pattern for the all-to-all message exchange exploits a hierarchical distance in the network topology in a desired manner.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: May 3, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Cyriel J Minkenberg, Bogdan Prisacari, German Rodriguez Herrera
  • Patent number: 9325062
    Abstract: A communication system is provided, including an antenna, a matching network coupled to the antenna, a controller configured to host an algorithm for controlling the matching network, and a look-up table coupled to the controller. The look-up table includes characterization data according to frequency bands and conditions. The controller is configured to refer to the look-up table to determine optimum impedance for a frequency band selected under a condition detected during a time interval, and adjust the matching network to provide the optimum impedance. Part or all of the sections related to the tunable matching scheme can be integrated on a chip.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: April 26, 2016
    Assignee: ETHERTRONICS, INC.
    Inventors: Olivier Pajona, Laurent Desclos
  • Patent number: 9325370
    Abstract: A method of emission of a frequency synchronization signal comprises a first step of determining at least two first emission frequencies respectively associated with at least two first intervals separated temporally by a first duration. The first temporal intervals are of identical duration. The first durations are identical for identical first frequencies and the first durations are different for different first frequencies. The method also comprises a second step of emitting at least one synchronization signal in the first temporal intervals and by using the first frequency, the signal emitted in the first intervals being identical.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: April 26, 2016
    Assignee: Thales
    Inventors: Marc Touret, Thierry Menigand, Marc Coutolleau
  • Patent number: 9191170
    Abstract: In the present invention, disclosed are a method for transceiving a reference signal in a wireless access system supporting device-to-device communication, and apparatus for same. More particularly, comprised are the steps of: a first device transmitting the reference signal for aligning device-to-device synchronization with a second device; and the first device performing device-to-device communication with the second device performing device-to-device synchronization with the second device after obtaining synchronization with the second device, wherein the reference signal is mapped on a predetermined symbol inside a resource that is allocated for device-to-device communication with the second device.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: November 17, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jiwoong Jang, Hyunsoo Ko, Hangyu Cho
  • Patent number: 9137810
    Abstract: The disclosure is related to transmitting configuration information of interference measurement resources (IMRs) and measuring interference in a downlink CoMP environment.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: September 15, 2015
    Assignee: KT CORPORATION
    Inventor: Seung Hyun Kang
  • Patent number: 9055534
    Abstract: Disclosed is a method for determining transmission power for transmitting uplink signals between terminals in a wireless communication system that supports terminal-to-terminal communication, and an apparatus therefor. A method in which a first terminal determines transmission power for transmitting an uplink signal to a second terminal in a wireless communication system that supports terminal-to-terminal communication comprises the following steps: estimating a channel state based on a second terminal-specific signal received from the second terminal; transmitting the estimated channel information to a base station; receiving a message, including information on a transmission power control factor, from the base station or from the second terminal; and determining transmission power for transmitting an uplink signal to the second terminal based on the received message.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: June 9, 2015
    Assignee: LG Electronics Inc.
    Inventors: Dongcheol Kim, Hangyu Cho, Kyujin Park, Jiwoong Jang
  • Publication number: 20150139047
    Abstract: An entire radio transceiver can be easily integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly modulated VCO is used for both up-conversion during transmission, and down-conversion during reception. Bond-wires are used as resonators in the oscillator tank for the VCO. A TDD scheme is used in the air interface to eliminate cross-talk or leakage. A Gaussian-shaped binary FSK modulation scheme is used to provide a number of other implementation advantages.
    Type: Application
    Filed: December 22, 2014
    Publication date: May 21, 2015
    Inventors: Karl Håkan Torbjörn GÄRDENFORS, Sven MATTISSON, Jacobus Cornelis HAARTSEN
  • Patent number: 9036684
    Abstract: Compressive sampling is used to generate pilot symbols to be transmitted over an array of antennas in a MIMO wireless communications device. A pilot symbol is transmitted over the array of antennas according to a spatially randomized antenna transmission function that randomly changes across the array of antennas. The randomized antenna transmission function may randomly select/deselect antennas and/or randomly change amplitude and/or phase of the pilot symbol transmission. Channel estimates can be constructed at a receiver based on the spatially randomized pilot symbols that were transmitted.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: May 19, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Dennis Hui, Kumar Balachandran, Jung-Fu Cheng, Jiann-Ching Guey
  • Publication number: 20150131703
    Abstract: A method and apparatus for processing a signal is present. Information is carried in a frequency hopping signal. The frequency hopping signal is sent to a gateway in a communications network through a satellite. The frequency hopping signal is unprocessed by the satellite to identify the information in the frequency hopping signal.
    Type: Application
    Filed: February 8, 2013
    Publication date: May 14, 2015
    Applicant: The Boeing Company
    Inventor: The Boeing Company
  • Patent number: 9020056
    Abstract: Method for transmitting and receiving signals over at least one channel between at least one transmitter and at least one receiver, the channel comprising at least one group of sub-channels, the group comprising at least one sub-channel, including the procedures of estimating at least one line characteristic of the channel and selecting a transmission scheme for each group of the at least one group of sub-channels according to the estimated line characteristic, wherein the transmission scheme is selected between a single spatial stream transmission scheme and a multiple spatial stream transmission scheme.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: April 28, 2015
    Assignee: SIGMA Designs Israel S.D.I. Ltd.
    Inventors: Ilan Reuven, Rami Verbin
  • Patent number: 9020008
    Abstract: In one embodiment, each device in a frequency hopping communication network independently determines its own local unicast listening schedule, and discovers a neighbor unicast listening schedule for each of its neighbors. The devices also synchronize to a common broadcast schedule for the network that simultaneously overlays a configured portion of all unicast listening schedules in the network. Accordingly, the device operate in a receive mode according to their local unicast listening schedule and the common broadcast schedule during the overlaid configured portion, and in a transmit mode according to each neighbor unicast listening schedule and the common broadcast schedule during the overlaid configured portion depending upon a destination of transmitted traffic.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: April 28, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Jonathan W. Hui, Wei Hong, Lik Chuen Alec Woo
  • Patent number: 9014233
    Abstract: A method includes generating multiple copies of a signal that comprises a plurality of time division multiple access frames. The multiple copies of the signal includes a first copy and one or more other copies of the signal. Each of the one or more other copies of the signal having a respective fixed delay and a respective phase relative to the first copy of the signal. The method also includes transmitting the multiple copies of the signal using hopping carrier frequencies. The hopping carrier frequencies associated with a consecutive pair of the plurality of time division multiple access frames are separated by an odd multiple of a separation value representing a frequency separation between two adjacent carrier signals. The respective fixed delay is proportional to the separation value for each of the one or more other copies of the signal.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: April 21, 2015
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: Arunabha Ghosh
  • Patent number: 9014234
    Abstract: A communication system comprises: a communication apparatus that is configured to transmit communication data, which includes a plurality of known synchronization symbols subjected to spread modulation with a spread code; and a communication apparatus that is configured to perform, when receiving the communication data, processing for detecting a synchronization timing, based on a correlation value between the received communication data and a reference signal. The communication apparatus comprises: a disturbing wave detection part configured to detect a period of a disturbing wave; a communication control part configured to set a transmission period of the synchronization symbol to be integer multiple of the period of the disturbing wave; and a transmission unit configured to transmit the communication data in which the transmission period of the synchronization symbol has been set by the communication control part.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: April 21, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Teruhito Takeda, Mitsuru Tanabe
  • Publication number: 20150103870
    Abstract: A synchronization signal transmitting apparatus generates a plurality of different primary synchronization signals that are transmitted in an ultra frame unit within one super ultra frame and generates one secondary synchronization signal that is transmitted in a frame unit within one super ultra frame.
    Type: Application
    Filed: October 14, 2014
    Publication date: April 16, 2015
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyung Jin KIM, Seokki KIM, Soojung JUNG, Seungkwon CHO, Sung Cheol CHANG, DongSeung KWON
  • Patent number: 9008150
    Abstract: An interference signal avoiding device of a frequency hopping spread system and a method thereof are disclosed. A method of transmitting/receiving an interference signal avoiding signal according to the present invention includes: determining a frequency hopping channel set and a parameter of an interference signal detector in consideration of characteristics of an interference signal; detecting whether there is an interference signal with respect to frequency hopping candidate channels that are to be used for the next frequency hopping by using the determined interference signal detector; transmitting a signal through a channel that is determined by the interference signal detector that there is no interference signal among the frequency hopping candidate channels; and searching a channel through which the signal is transmitted from the frequency hopping candidate channels in order to receive the transmitted signal.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: April 14, 2015
    Assignee: SNU R&DB Foundation
    Inventors: Yong-Hwan Lee, Seung-Hwan Lee, Jin-Seok Han
  • Patent number: 9008151
    Abstract: Provided is a transmission method that converts an encoded block of data into first complex symbols each including a real component and an imaginary component, one or which is designated as a first component and the other as a second component; writes the first components and the second components of the first complex symbols respectively column by column into a first interleaver matrix and a second interleaver matrix having NR rows; applies a cyclic shift to each column of the second interleaver matrix in accordance with a predetermined shift pattern; and reads the first components from the first interleaver matrix and the second components from the cyclically shifted second interleaver matrix row by row. NR is a multiple of NRF greater than NRF (NRF being an integer greater than one), and the shift pattern for the cyclic shift includes only integers that are not a multiple of NRF.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: April 14, 2015
    Assignee: Panasonic Corporation
    Inventor: Mihail Petrov
  • Patent number: 8994567
    Abstract: A digital-to-analog conversion circuit operates by selectively discharging members of a plurality of capacitors. Charging of the capacitors occurs during a reset period while digital-to-analog conversion occurs as the capacitors are discharged. Those capacitors that are discharged are selected from the plurality of capacitors based on a digital input. The analog output includes the charge discharged from the capacitors. The capacitors are optionally divided into separate capacitor banks.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: March 31, 2015
    Assignee: Broadcom Europe Limited
    Inventors: Jonathan Ephraim David Hurwitz, Steven Collins
  • Patent number: 8989233
    Abstract: Methods and apparatuses are provided for transmitting and receiving data in a wireless communication system. Hopping information including at least a number of sub-bands is received. Resource allocation information is received. A resource for transmitting the data is determined based on the resource allocation information and the hopping information. The data is transmitted using the determined resource. The resource for transmitting the data is determined according to at least one of applying a change of a resource allocation within inter sub-bands and applying a change of the resource allocation within an intra sub-band. A sub-band includes at least one sub-channel, and one sub-channel includes a plurality of sub-carriers.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: March 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-Chon Yu, Hwan-Joon Kwon, Dong-Hee Kim, Yeon-Ju Lim