Single Message Via Plural Carrier Wave Transmission Patents (Class 455/59)
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Patent number: 8520748Abstract: In a cellular system using an OFDM scheme, a transmitter multiplies subcarriers for channel estimation by codes and transmits them, the codes being such that a phase difference ? of the code multiplied with consecutive subcarriers for channel estimation is constant, and a code of every M consecutive subcarriers (M being 2 or an integer greater than 2) is mutually orthogonal with a code multiplied with same subcarriers of another transmitter.Type: GrantFiled: October 3, 2006Date of Patent: August 27, 2013Assignee: Sharp Kabushiki KaishaInventors: Yasuhiro Hamaguchi, Kimihiko Imamura, Shimpei To, Hideo Namba
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Patent number: 8515471Abstract: A method and system for sending the same data in multiple directions via directional transmission is disclosed. One embodiment of the invention allows for processing power to be saved by introducing a buffer in the physical (PHY) layer, after some baseband (BB) processing has been performed. In one embodiment of the invention the method comprises receiving data from a MAC layer, performing preliminary processing on data in the PHY layer, storing the preliminarily processed data in a buffer located in the PHY layer, performing secondary processing on the preliminarily processed data, transmitting the secondarily processed data in a first direction, via directional transmission, reading the preliminarily processed data from the buffer, performing secondary processing on the preliminarily processed data, and transmitting the secondarily processed data in a second, third, fourth and so-on direction.Type: GrantFiled: February 15, 2008Date of Patent: August 20, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Huai-Rong Shao, Chiu Ngo
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Patent number: 8503592Abstract: A communication system and method is disclosed that performs symbol boundary synchronization by generating a symbol alignment estimate from a partial signal correlation; and then refining the symbol alignment estimate via a carrier phase calculation. To generate the symbol alignment estimate, two methods are disclosed. After an estimate is determined, an embodiment provides for refining the symbol alignment estimate via a carrier phase calculation by determining a carrier phase of two adjacent carriers, determining a phase error as directly proportional to an offset from the start of a symbol, determining a phase difference contribution due to a communication channel and device hardware, and counter-rotating the determined carrier phase by an angle of a constellation point at a transmitter.Type: GrantFiled: February 6, 2012Date of Patent: August 6, 2013Assignee: Metonoia Technologies, Inc.Inventor: Jeffrey C. Strait
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Patent number: 8503283Abstract: Method, apparatus, and computer program product embodiments are disclosed to enable an access point in a wireless network to use Orthogonal Frequency-Division Multiple Access (OFDMA) reserve subcarriers of OFDM symbols for transmitting high priority voice data and video data to particular wireless devices, while the access point allocates the remaining available subcarriers for contention-based access by other wireless devices.Type: GrantFiled: June 12, 2008Date of Patent: August 6, 2013Assignee: Nokia CorporationInventors: Padam Lal Kafle, Prabodh Varshney, Kyeong Jin Kim
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Patent number: 8503373Abstract: Systems and methodologies are described that facilitate multiplexing of localized transmissions and distributed transmissions to reduce overhead transmission costs. According to various aspects, systems and/or methods are described that enable selection of an optimal transmission scheme in order to accommodate various traffic services, user abilities and channel properties.Type: GrantFiled: January 12, 2007Date of Patent: August 6, 2013Assignee: QUALCOMM IncorporatedInventors: Jelena M. Damnjanovic, Durga Prasad Malladi
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Patent number: 8483294Abstract: A method and apparatus for transmitting and receiving a common control channel in an Orthogonal Frequency Division Multiplexing (OFDM) mobile communication system. In the transmission apparatus, when a plurality of bursts are transmitted during a Transmission Time Interval (TTI) of the common control channel, an Inverse Fast Fourier Transform (IFFT) mapper generates bursts that are shifted in a frequency domain by applying a predetermined cyclic shift offset between the bursts, and maps the generated bursts in a resource block. A transmission unit transmits the bursts to a receiver. In the reception apparatus, a reception unit receives a burst, and a combining unit combines the received burst with a burst stored in a buffer. A decoder decodes each of the combined bursts, and upon a successful decoding, detects a TTI start timing of the common control channel from the successfully decoded burst.Type: GrantFiled: June 12, 2008Date of Patent: July 9, 2013Assignee: Samsung Electronics Co., LtdInventors: Joon-Young Cho, Ying-Yang Li, Jianzhong Zhang, Ju-Ho Lee, Hwan-Joon Kwon
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Patent number: 8472500Abstract: A method of demodulating at a receiver a plurality of symbols bk comprised in a e.g. UWB, received signal y(t), said receiver having knowledge of a time hopping sequence vector c of the transmitted signal, said method comprising the step of: generating a plurality of frequency-domain samples from the received signal y(t). It further comprises the steps of: from said plurality of frequency-domain samples and said time hopping sequence vector c, applying a coarse estimation stage (7) for identifying the beginning of a first complete symbol (formula A) in an acquisition interval; applying a stage for fine estimation (8) of the time delay (formula B) of each symbol bk, wherein k denotes the k-th symbol, by searching a relative maximum at which a signal energy distribution exceeds a certain threshold Pth; from said fine estimation of the time delay (formula B) of each symbol bk, demodulating (formula C) said symbols bk.Type: GrantFiled: September 26, 2008Date of Patent: June 25, 2013Assignee: Fundacio Privada Centre Tecnologic de Telecomunicacions de CatalunyaInventors: Montserrat Najar Marton, Monica Navarro Rodero
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Patent number: 8467462Abstract: To suppress effects produced on other terminals as much as possible, while obtaining the advantage of soft-combining. A multicarrier receiving apparatus that receives a packet comprised of at least a propagation path estimation symbol and a scrambled information symbol to demodulate, and has propagation path estimating sections 3-a and 3-b that respectively estimate propagation paths of radio signals transmitted from a plurality of transmission antennas, scramble multiplying sections 5-a and 5-b that respectively perform the same scrambling on propagation path estimation values output from the propagation path estimating sections 3-a and 3-b as scrambling provided in the information symbol on the transmission antennas sides, an adding section 3-c that adds scrambled propagation path estimation values, and a propagation path compensating section 7 that performs propagation path compensation of the information symbol included in the received packet using a signal output from the adding section 3-c.Type: GrantFiled: November 15, 2006Date of Patent: June 18, 2013Assignee: Sharp Kabushiki KaishaInventors: Yasuhiro Hamaguchi, Minoru Kubota, Shimpei To, Shoichi Shitara, Kimihiko Imamura
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Patent number: 8446973Abstract: A transmission apparatus includes a plurality of orthogonal frequency division multiplexing (OFDM) modulation signal generators, which generate a first OFDM modulation signal and a second OFDM modulation signal. The transmission apparatus also includes a transmitter that transmits the first OFDM modulation signal from a first antenna and the second OFDM modulation signal from a second antenna, in an identical frequency band.Type: GrantFiled: June 12, 2012Date of Patent: May 21, 2013Assignee: Panasonic CorporationInventors: Yutaka Murakami, Masayuki Orihashi, Akihiko Matsuoka
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Patent number: 8442134Abstract: Synchronization tracking in an orthogonal frequency division multiplexing (OFDM) receiver by obtaining a DFT output vector; determining a sample timing offset indication using reference symbols extracted from the DFT output vector; and adapting the OFDM symbol timing using said determined indication. To provide an improved post-DFT algorithm for estimating time tracking error in OFDM receivers the determining includes (a) estimating the channel transfer function at equidistant frequency positions using said reference symbols, for a first OFDM symbol; determining plural frequency correlations for said equidistant frequency positions for said OFDM symbol; (c) repeating steps (a) and (b) for subsequent OFDM symbols; (d) linearly combining said plural frequency correlations for said plural OFDM symbols obtained in steps (a) through (c), for obtaining said sampling clock offset indication wherein the linear combining uses nonzero weights only. An OFDM receiver circuit arrangement performing this method.Type: GrantFiled: January 12, 2009Date of Patent: May 14, 2013Assignee: NXP B.V.Inventor: Andreas Gerhard Bury
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Patent number: 8437326Abstract: A method, mobile electronic device and system for synchronizing hand-off of a voice media session between a WAN/cellular network and a WLAN network. When a hand-off occurs, the connection with both networks is temporarily maintained and the voice data on both connections compared to determine differences in the delays experienced over both connections. The timing of one or both voice streams is adjusted to synchronize the voice streams, and then the handoff is completed.Type: GrantFiled: September 14, 2012Date of Patent: May 7, 2013Assignee: Research In Motion LimitedInventor: Vytautas Robertas Kezys
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Patent number: 8422572Abstract: In a method and/or an OFDM device for SC-FDMA data transmission, a sequence of input data is transformed by means of a discrete transformation as transformed data signals of coded and modulated data signals on first frequency channels into a first frequency space over a first number of frequencies. The transformed data signals are mapped on second frequency channels in a second frequency space with a larger second number of frequencies. The transformed data signals on the second frequency channels are inverse-transformed using an inverse transformation. Data inversely transformed in such a way are provided for transmission. The transformed data signals are mapped into a frequency range of the second frequency channels in such a way that a constant component of the transformed data signals is mapped centrally within the frequency range.Type: GrantFiled: March 22, 2007Date of Patent: April 16, 2013Assignees: Nokia Siemens Networks GmbH & Co. KG, Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Andreas Forck, Holger Gaebler, Thomas Haustein, Thomas Hindelang, Volker Jungnickel, Wolfgang Zirwas
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Patent number: 8412125Abstract: An apparatus for enabling a base station to transmit radio frequency signals with a transmit diversity technique comprises a first antenna implemented in the base station; and a second antenna implemented in the base station, and placed apart from the first antenna by a predetermined distance. The first antenna utilizes a first frequency band of a predetermined frequency spectrum for transmitting signals, and the second antenna utilizes a second frequency band of the predetermined frequency spectrum for transmitting signals. The first and second frequency bands do not overlap.Type: GrantFiled: October 3, 2007Date of Patent: April 2, 2013Assignee: Cisco Technology, Inc.Inventor: Richard L. Smith
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Patent number: 8412129Abstract: A system, apparatus, method and article to manage diversity for a wireless multicarrier communication system are described. An apparatus may include a diversity agent to couple to a transmitter, the diversity agent to convert a determined number of input bits into symbols, interleave the symbols across multiple spatial streams, and map the symbols to tones for each spatial stream. Other embodiments are described and claimed.Type: GrantFiled: November 11, 2011Date of Patent: April 2, 2013Assignee: Intel CorporationInventors: Nageen Himayat, Sumeet Sandhu
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Patent number: 8406339Abstract: A data processing apparatus maps input symbols to be communicated onto a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined number of data symbols for mapping onto the OFDM sub-carrier signals. The interleaver memory reads-out the data symbols on to the OFDM sub-carriers to effect the mapping, the read-out being in a different order than the read-in, the order being determined from a set of addresses, with the effect that the data symbols are interleaved on to the sub-carrier signals. The set of addresses are generated from an address generator which comprises a linear feedback shift register and a permutation circuit.Type: GrantFiled: February 2, 2012Date of Patent: March 26, 2013Assignee: Sony CorporationInventors: Matthew Paul Athol Taylor, Samuel Asanbeng Atungsiri, John Nicholas Wilson
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Patent number: 8396104Abstract: A data processing apparatus maps input symbols to be communicated onto a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined number of data symbols for mapping onto the OFDM sub-carrier signals. The interleaver memory reads-out the data symbols on to the OFDM sub-carriers to effect the mapping, the read-out being in a different order than the read-in, the order being determined from a set of addresses, with the effect that the data symbols are interleaved on to the sub-carrier signals. The set of addresses are generated from an address generator which comprises a linear feedback shift register and a permutation circuit. The linear feedback shift register has eleven register stages with a generator polynomial for the linear feedback shift register of R?i[10]=R?i?1[0]?R?i?1[2], and the permutation code forms, with an additional bit, a twelve bit address.Type: GrantFiled: February 16, 2012Date of Patent: March 12, 2013Assignee: Sony CorporationInventors: Matthew Paul Athol Taylor, Samuel Asanbeng Atungsiri, John Nicholas Wilson
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Patent number: 8391227Abstract: A communication system and method for single-point transmission and reception and coordinated multi-point transmission and reception are provided. The system and method include determining information associated with a channel status of a target terminal. The system and method also include selecting, with respect to the target terminal, one of single-point transmission and reception and coordinated multi-point transmission and reception based on the information associated with the channel status of the target terminal.Type: GrantFiled: April 13, 2010Date of Patent: March 5, 2013Assignees: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and TechnologyInventors: Hyun Ho Choi, Dan Keun Sung, Seon Yeob Baek, Byoung Hoon Jung, Kab Seok Ko, Ji Young Cha
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Patent number: 8374260Abstract: A method and a customer's wireless communication device are provided that perform uplink transmit diversity in a switched antenna OFDM communication system. A switching of antennas used by the customer's wireless communication device to transmit an uplink signal is restricted to switching time periods that comprise one or more of a transition gap immediately preceding a transmission of a channel quality-related uplink signal and a time period subsequent to the occurrence of the transition gap but prior to the transmission of the channel quality-related uplink signal, which channel quality-related uplink signal may be used by a serving radio access network to update a channel response and antenna array weights associated with the customer's wireless communication device. The customer's wireless communication device then switches antennas used for uplink transmissions only during the switching time periods.Type: GrantFiled: June 22, 2009Date of Patent: February 12, 2013Assignee: Motorola Mobility LLCInventors: Matthew S. Schirmacher, Frederick W. Vook, Wei Wu
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Patent number: 8374269Abstract: A data processing apparatus is arranged to map input data symbols to be communicated onto a predetermined number of sub-carrier signals of Orthogonal Frequency Division Multiplexed OFDM symbols. The predetermined number of sub-carrier signals is determined in accordance with one of a plurality of operating modes and the input data symbols are divided into first sets of input data symbols and second sets of input data symbols. The data processing apparatus comprises an interleaver operable to perform an odd interleaving process which interleaves the first sets of input data symbols on to the sub-carrier signals of first OFDM symbols and an even interleaving process which interleaves the second sets of input data symbols on to the sub-carrier signals of second OFDM symbols.Type: GrantFiled: January 6, 2012Date of Patent: February 12, 2013Assignee: Sony CorporationInventors: Matthew Paul Athol Taylor, Samuel Asangbeng Atungsiri, John Nicholas Wilson
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Patent number: 8369434Abstract: A data processing apparatus maps input symbols to be communicated onto a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined number of data symbols for mapping onto the OFDM sub-carrier signals. The interleaver memory reads-out the data symbols on to the OFDM sub-carriers to effect the mapping, the read-out being in a different order than the read-in, the order being determined from a set of addresses, with the effect that the data symbols are interleaved on to the sub-carrier signals. The set of addresses are generated from an address generator which comprises a linear feedback shift register and a permutation circuit.Type: GrantFiled: November 21, 2011Date of Patent: February 5, 2013Assignee: Sony CorporationInventors: Matthew Paul Athol Taylor, Samuel Asanbeng Atungsiri, John Nicholas Wilson
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Patent number: 8369430Abstract: The present invention relates to a method for detecting a signal, a device for detecting a signal, and a receiving device.Type: GrantFiled: April 23, 2010Date of Patent: February 5, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Seungjae Bahng, Junghyun Kim, Hoon Lee, Youn Ok Park
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Patent number: 8364200Abstract: A system and method providing concurrent multimode communication through multimode signal multiplexing. Various aspects of the present invention may comprise, during a first time period, transmitting a first portion of a first communication in a first communication mode in a serial wireless transmission stream. During a second time period after the first time period, a first portion of a second communication may be transmitted in a second communication mode in the serial wireless transmission stream. Also, during a third time period after the second time period, a second portion of the first communication may be transmitted in the first communication mode in the serial wireless transmission stream. In an exemplary scenario, prior to communicating various communications, transmission time may be allocated between the first and second communication modes. In another exemplary scenario, transmission may be switched between a plurality of communication modes in response to detected communication conditions.Type: GrantFiled: April 20, 2012Date of Patent: January 29, 2013Assignee: Broadcom CorporationInventors: Ahmadreza Rofougaran, Arya Behzad
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Patent number: 8358614Abstract: A method and an apparatus for uplink transmission using multiple uplink carriers are disclosed. A wireless transmit/receive unit (WTRU) selects a dedicated channel medium access control (MAC-d) flow with highest priority data to be transmitted and performs uplink carrier selection and enhanced dedicated channel (E-DCH) transport format combination (E-TFC) restriction and selection to select a carrier among a plurality of carriers and select an E-TFC based on a maximum supported payload, a remaining scheduled grant payload of the selected carrier and a remaining non-scheduled grant payload. The WTRU then generates a medium access control (MAC) protocol data unit (PDU) for E-DCH transmission via the selected carrier based on the selected E-TFC.Type: GrantFiled: October 31, 2009Date of Patent: January 22, 2013Assignee: InterDigital Patent Holdings, Inc.Inventors: Diana Pani, Paul Marinier, Christopher R. Cave, Benoit Pelletier, Fengjun Xi
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Patent number: 8355455Abstract: Channel estimates respectively associated with OFDM pilot symbols are used to estimate additional parameters such as change in channel phase over time, change in channel phase over frequency, and frequency selectivity.Type: GrantFiled: April 28, 2009Date of Patent: January 15, 2013Assignee: QUALCOMM IncorporatedInventors: Mohammad M. Mansour, Sundeep Rangan, Siddharth Ray, Vincent Loncke, Pramod K. A. Rao, Joshua L. Koslov
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Patent number: 8355674Abstract: A radio transmission method and a radio transmitter device for radio transmission of an audio signal from an audio device to a radio receiver wherein an audio signal is received from the audio device, and an RF signal is transmitted simultaneously which is modulated with the audio signal on each of a set of at least two different RF channels. Within each of the transmitted RF signals, information identifying at least the other RF channels in the set of RF channels is included.Type: GrantFiled: March 7, 2008Date of Patent: January 15, 2013Assignee: ST-Ericsson SAInventor: Marc Borremans
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Patent number: 8351367Abstract: A user device on a wireless network includes a receiver, a noise detector and a noise determiner. The receiver receives downlink data communications from a base station that indicates an allocation of time/frequency resource blocks at least to user devices that are communicating with the base station. The noise detector measures noise in a time/frequency resource block, comprising plural time/frequency bins, that is not allocated to one of the user devices. The noise determiner determines a level of interfering noise based on noise in the resource block that is not allocated to one of the user devices.Type: GrantFiled: March 30, 2009Date of Patent: January 8, 2013Assignee: Marvell World Trade Ltd.Inventors: Daniel Yellin, Adoram Erell, Ronen Mayrench, Ezer Melzer
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Patent number: 8351528Abstract: A data processing apparatus maps input symbols to be communicated onto a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined number of data symbols for mapping onto the OFDM sub-carrier signals. The interleaver memory reads-out the data symbols on to the OFDM sub-carriers to effect the mapping, the read-out being in a different order than the read-in, the order being determined from a set of addresses, with the effect that the data symbols are interleaved on to the sub-carrier signals. The set of addresses are generated from an address generator which comprises a linear feedback shift register and a permutation circuit.Type: GrantFiled: February 1, 2012Date of Patent: January 8, 2013Assignee: Sony CorporationInventors: Matthew Paul Athol Taylor, Samuel Asanbeng Atungsiri, John Nicholas Wilson
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Patent number: 8351541Abstract: A data processing apparatus communicates data bits on a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processing apparatus comprises a parity interleaver operable to perform parity interleaving on Low Density Parity Check (LDPC) encoded data bits obtained by performing LDPC encoding according to a parity check matrix of an LDPC code including a parity matrix corresponding to parity bits of the LDPC code, the parity matrix having a stepwise structure, so that a parity bit of the LDPC encoded data bits is interleaved to a different parity bit position. A mapping unit maps the parity interleaved bits onto data symbols corresponding to modulation symbols of a modulation scheme of the OFDM sub-carrier signals.Type: GrantFiled: January 27, 2012Date of Patent: January 8, 2013Assignee: Sony CorporationInventors: Mathew Paul Athol Taylor, Samuel Asanbeng Atungsiri, Takashi Yokokawa, Makiko Yamamoto
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Patent number: 8351404Abstract: A method and apparatus for increasing user capacity in a multi-user communication system. The method comprises transmitting a signal multiple times in the communication system with a predetermined delay between each retransmission. A receiver receives the signals and makes multiple delayed copies of the signal which are then summed. A second signal is then transmitted multiple times in the communication system with a different delay time between each retransmission than the first signal, and then received by a receiver which makes multiple delayed copies of this second signal which are then summed and decoded. This process is then used on subsequent signals in the communication system.Type: GrantFiled: September 25, 2009Date of Patent: January 8, 2013Inventor: Nigel Iain Stuart Macrae
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Patent number: 8345716Abstract: An antenna array includes pairs of antenna elements, each responsive to mutually orthogonal first and second polarizations for producing streams of analog signals. The number of transceivers is halved by time-division multiplexing the analog signals onto a single path and transceiving the stream in that path. The transceived analog signals are digitized, to produce streams of digital samples, alternate ones of which represent the first and second polarizations. Alternate samples of the stream of digitized signals represent the analog received first and second polarizations. Simple processing identifies the polarization of the received signals, and can be used for weather evaluation or for polarimetric identification.Type: GrantFiled: June 26, 2007Date of Patent: January 1, 2013Assignee: Lockheed Martin CorporationInventor: Timothy Ehret
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Patent number: 8340139Abstract: In wireless systems, method and system for weight determination in a single channel (SC) multiple-input multiple-output (MIMO) system for WCDMA/HSDPA are provided. Models of signals received in multiple receive antennas may be determined in a single weight baseband generator (SWBBG) from propagation channel estimates and noise statistics. The models may be utilized to determine combined signal and noise components. The combined signal and noise components may be utilized to determine a plurality of signal-to-noise ratio (SNR) or signal-to-interference-and-noise ratio (SINR) values for various phase and/or amplitude factors. The SINR may be utilized when either single or multiple interfering signals are present. A highest of the SINR or SNR values may be selected to determine a channel weight to apply to the additional receive antennas.Type: GrantFiled: June 30, 2005Date of Patent: December 25, 2012Assignee: Broadcom CorporationInventors: Mark Kent, Vinko Erceg, Uri M. Landau, Pieter G. W. van Rooyen
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Patent number: 8335528Abstract: A system for electronic messaging, comprising a first device adapted to send and receive electronic messages using a short message service protocol of a wireless communications network and a plurality of second devices adapted to send and receive electronic messages using a short message service protocol of a wireless communications network, wherein the first device assembles an electronic message to send to a plurality of second devices at least in part by inserting a destination address into a user data header information element of the electronic message for each of said plurality of said second devices to which the electronic message is to be sent, is disclosed.Type: GrantFiled: December 20, 2010Date of Patent: December 18, 2012Assignee: Communication Enhancement Products, Inc.Inventor: Mark Ryan
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Patent number: 8331863Abstract: An embodiment for wirelessly communicating a signal includes a transmitter combining a plurality of phase shifted input data signals with a plurality of synchronization/pilot sequences to produce a plurality of combined signals, performing frequency domain-to-time domain transformations of the combined signals to produce a plurality of candidate signals, determining peak-to-average ratios for at least some of the plurality of candidate signals, identifying a selected signal from the plurality of candidate signals based on the peak-to-average ratios, and transmitting the selected signal over a wireless communication channel.Type: GrantFiled: January 26, 2012Date of Patent: December 11, 2012Assignee: General Dynamics C4 Systems, Inc.Inventors: John Eric Kleider, Robert John Baxley
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Patent number: 8320484Abstract: A data processor maps input symbols to be communicated onto a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined number of data symbols for mapping onto the OFDM sub-carrier signals. The interleaver memory reads-out the data symbols on to the OFDM sub-carriers to effect the mapping, the read-out being in a different order than the read-in, the order being determined from a set of addresses, with the effect that the data symbols are interleaved on to the sub-carrier signals. The set of addresses are generated from an address generator which comprises a linear feedback shift register and a permutation circuit.Type: GrantFiled: December 30, 2011Date of Patent: November 27, 2012Assignee: Sony CorporationInventors: Matthew Paul Athol Taylor, Samuel Asanbeng Atungsiri, John Nicholas Wilson
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Patent number: 8306137Abstract: A data processing apparatus maps input symbols to be communicated onto a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined number of data symbols for mapping onto the OFDM sub-carrier signals. The interleaver memory reads-out the data symbols on to the OFDM sub-carriers to effect the mapping, the read-out being in a different order than the read-in, the order being determined from a set of addresses, with the effect that the data symbols are interleaved on to the sub-carrier signals. The set of addresses are generated from an address generator which comprises a linear feedback shift register and a permutation circuit.Type: GrantFiled: October 24, 2008Date of Patent: November 6, 2012Assignee: Sony CorporationInventors: Samuel Asanbeng Atungsiri, Matthew Paul Athol Taylor, John Nicholas Wilson
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Patent number: 8290127Abstract: A system and method are disclosed for broadcasting Voice over Internet Protocol (VoIP) messages. A method incorporating teachings of the present disclosure may include receiving an indication that a message should be delivered to a plurality of recipients. In response, contact information for the plurality of recipients may be identified, and an outbound packetized call to each of the recipients may be launched. In practice, the packetized call may be in a VoIP form or some other appropriate packetized form. If a call is answered, the call may be connected to a multicast server capable of playing the to-be-delivered message.Type: GrantFiled: February 6, 2004Date of Patent: October 16, 2012Assignee: AT&T Intellectual I, L.P.Inventors: Douglas F. Reynolds, Jeffrey L. Brandt, Aaron Bangor, Marc A. Sullivan
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Patent number: 8270600Abstract: A disclosed base station randomizes downlink physical channels in OFDM radio access by scrambling codes suitable for the respective physical channels. The base station includes a base-station-specific scrambling code generating unit configured to generate a base-station-specific scrambling code for randomizing downlink physical channels; a sector-specific orthogonal sequence generating unit configured to generate a sector-specific orthogonal sequence; and a multiplication control unit configured to determine, for each of the physical channels, whether to multiply the base-station-specific scrambling code by the sector-specific orthogonal sequence based on whether each of the physical channels requires soft combining.Type: GrantFiled: October 1, 2007Date of Patent: September 18, 2012Assignee: NTT DoCoMo, Inc.Inventors: Yoshihisa Kishiyama, Kenichi Higuchi, Mamoru Sawahashi
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Patent number: 8265177Abstract: A system and method for generating a number of candidate beamforming vectors for transmission of high definition video data over a wireless medium is disclosed. In one embodiment the system comprises a memory configured to store a plurality of candidate beamforming vectors and a processor for executing software configured to i) determine the number (N) of transmitter antennas and the number (Q) of candidate beamforming vectors to be constructed, ii) provide a discrete Fourier transform (DFT) matrix comprising Q rows and Q columns, iii) select N rows of the DFT matrix, and iv) generate an abridged matrix using the selected N rows, wherein each column of the abridged matrix is configured to be used as a candidate beamforming vector for transmission of a high definition video data signal.Type: GrantFiled: September 28, 2007Date of Patent: September 11, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Pengfei Xia, Chiu Ngo
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Patent number: 8259829Abstract: Method and device for estimating the time-of-arrival of a received signal y(t), said method comprising the step of: generating a plurality of frequency-domain samples from the received signal y(t); estimating a correlation matrix (Formula I) from said plurality of frequency-domain samples; from said correlation matrix (Formula I), calculating a signal energy distribution with respect to different propagation delays; finding a delay value (Formula II) at which said signal energy distribution exceeds a certain threshold Pth, said delay value representing the time-of-arrival estimation.Type: GrantFiled: September 20, 2006Date of Patent: September 4, 2012Assignee: Fundacio Privada Centre Techologic de Telecomunicacions de CatalunyaInventors: Mónica Navarro Rodero, Montserrat Nájar Martón, Christian Ibars Casas
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Patent number: 8254978Abstract: Methods and systems or broadcasting the fast power control message in wireless communications systems are provided. In certain embodiments, the methods and systems can include receiving Carrier to Interference-plus-Noise Ratio (CINR) values from multiple mobile stations, determining a power adjustment value for each mobile station based on the CINR values, grouping the mobile stations based at least on the CINR values, and transmitting a fast power control message for each group with a different number of repetitions.Type: GrantFiled: April 2, 2009Date of Patent: August 28, 2012Assignee: Qualcomm IncorporatedInventors: Tom Chin, Guangming Carl Shi, Kuo-Chun Lee
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Patent number: 8254839Abstract: A signal transmitting device of the present invention includes a plurality of drums and a sound module. Each drum has a pickup and a wireless signal transceiver, and the sound module includes several wireless signal receivers, each of which corresponds to one of the drums. While the drum is beaten upon, the pickup sends a signal to the wireless signal transceiver, and the signal is then transmitted to the corresponding wireless signal receiver wirelessly. Thereby, the complex wiring process can be significantly simplified or even totally resolved.Type: GrantFiled: July 30, 2009Date of Patent: August 28, 2012Inventor: Chao-Ying Hsien
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Patent number: 8244290Abstract: Methods and computer-readable mediums for processing push-to-talk voice messages are provided. According to one method, a first mobile station receives a push-to-talk voice message from a second mobile station, determines that a data object is attached to the push-to-talk voice message, determines a type of the data object, and stores the data object in a PTT attachment queue of the first mobile station, based upon the determined type of the data object, which may be a picture, video data, audio data, e-mail, document, contact, or the like.Type: GrantFiled: April 29, 2009Date of Patent: August 14, 2012Assignee: Nextel Communications, Inc.Inventors: Mike Gailloux, John Everson, Kenneth W. Samson, Jeffrey Dillon
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Patent number: 8228950Abstract: A method for detecting and/or estimating a ranging signal in a wireless communications network, wherein the ranging signal comprises a plurality of tiles. The method includes (i) for two or more of the plurality of tiles, carrying out a plurality of mathematical correlations for one or more of the plurality of tiles but less than all of the plurality of tiles products between subcarriers, wherein at least one of the plurality of products is carried out between non-adjacent subcarriers associated with one of the two or more of the plurality of tiles; (ii) summing the results of the correlations products, thereby obtaining mathematical correlations that make up summed results; and (iii) based on the summed results, detecting a code characterizing the ranging signal and/or estimating the timing offset of the ranging signal.Type: GrantFiled: September 18, 2006Date of Patent: July 24, 2012Assignee: Alvarion Ltd.Inventors: Dan Stopler, Tal Kaitz, Yaniv Bar
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Patent number: 8223863Abstract: The present invention relates to the area of wireless communication, and especially to a method and an arrangement for transmission output power control in a cellular telecommunications network. An improved transmission output power control is achieved by adapting a pre-defined power mask to a signal transmission characteristic of the signal transmission and applying the adapted power mask to a sub-frame or an OFDM symbol. The present invention could be implemented in a network node such as an eNodeB or in a user equipment.Type: GrantFiled: December 18, 2008Date of Patent: July 17, 2012Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Christian Bergljung, Ming Chen, Muhammad Kazmi, Olav Queseth
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Patent number: 8224299Abstract: A data transmission system for minimizing the number of errors during Tx/Rx times of mobile service data under mobile environments, and a data processing method for the same are disclosed. The system additionally codes the mobile service data, and transmits the resultant coded mobile service data. As a result, the mobile service data has a strong resistance to noise and channel variation, and can quickly cope with the rapid channel variation.Type: GrantFiled: April 14, 2008Date of Patent: July 17, 2012Assignee: LG Electronics Inc.Inventors: Jin Woo Kim, In Hwan Choi, Kook Yeon Kwak, Jong Moon Kim, Won Gyu Song, Hyoung Gon Lee, Byoung Gill Kim, Eun Hyung Cho
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Patent number: 8213870Abstract: Systems and methods for transmitting packets to a receiver. In an implementation, the method includes storing, in a memory, a plurality of predefined spatial mapping matrices for use in a transmission of one or more packets to a receiver; sequentially transmitting one or more packets to the receiver, in which each of the sequential transmissions of one or more packets comprises using a different one of the plurality of predefined spatial mapping matrices stored in the memory; and selecting one of the plurality of predefined spatial mapping matrices stored in the memory for use in a subsequent transmission of one or more packets to the receiver, in which the selection of the one of the plurality of predefined spatial mapping matrices for use in the subsequent transmission is based on a quality of reception of the one or more data packets transmitted in each of the sequential transmissions.Type: GrantFiled: October 15, 2008Date of Patent: July 3, 2012Assignee: Marvell World Trade Ltd.Inventors: Hongyuan Zhang, Rohit U. Nabar
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Patent number: 8208525Abstract: A data processing apparatus maps input symbols to be communicated onto a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined number of data symbols for mapping onto the OFDM sub-carrier signals. The interleaver memory reads-out the data symbols on to the OFDM sub-carriers to effect the mapping, the read-out being in a different order than the read-in, the order being determined from a set of addresses, with the effect that the data symbols are interleaved on to the sub-carrier signals. The set of addresses are generated from an address generator which comprises a linear feedback shift register and a permutation circuit.Type: GrantFiled: October 24, 2008Date of Patent: June 26, 2012Assignee: Sony CorporationInventors: Matthew Paul Athol Taylor, Samuel Asanbeng Atungsiri, John Nicholas Wilson
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Patent number: 8208524Abstract: A data processing apparatus maps input symbols to be communicated onto a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined number of data symbols for mapping onto the OFDM sub-carrier signals. The interleaver memory reads-out the data symbols on to the OFDM sub-carriers to effect the mapping, the read-out being in a different order than the read-in, the order being determined from a set of addresses, with the effect that the data symbols are interleaved on to the sub-carrier signals. The set of addresses are generated from an address generator which comprises a linear feedback shift register and a permutation circuit. The linear feedback shift register has eleven register stages with a generator polynomial for the linear feedback shift register of R?i[10]=R?i-1[0]?R?i-1[2], and the permutation code forms, with an additional bit, a twelve bit address.Type: GrantFiled: October 23, 2008Date of Patent: June 26, 2012Assignee: Sony CorporationInventors: Matthew Paul Athol Taylor, Samuel Asanbeng Atungsiri, John Nicholas Wilson
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Patent number: 8208567Abstract: An apparatus and method for reducing a Peak-to-Average Power Ratio (PAPR) are provided. The apparatus includes a gain processor for multiplying time signals in paths by gains set for respective paths, a delay processor for delaying gain-multiplied signals in second to last paths except for a first path by time delays set for respective second to last paths, a summer for summing the gain-multiplied signal for the first path received from the gain processor and the delayed signals received from the delay processor, a PAPR processor for measuring a PAPR of the summed signal received from the summer, for comparing the measured PAPR with a target PAPR, and for requesting one or more changes of at least one of the gain and time delay of each path, and a gain delay controller for changing the at least one of the gain and the time delay of each path according to the request received from the PAPR processor and for controlling the gain processor and the delay processor according to the change.Type: GrantFiled: October 16, 2008Date of Patent: June 26, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Hae-Dong Yeon, In-Hyoung Kim, Jin-Woo Roh, Sung-Soo Kim, Bong-Gee Song, Jong-Han Lim
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Patent number: 8199846Abstract: A multi-user multiple-input multiple-output (MU-MIMO) downlink beamforming system (200) is provided to enable transmit beamforming vectors to be efficiently provided to a subset of user equipment devices (201.i), where spatial separation or zero-forcing transmit beamformers (wi) are computed at the base station (210) and used to generate precoded reference signals (216). The precoded reference signals (216) are fed forward to the user equipment devices (201.i) which apply one or more hypothesis tests (207.i, 208.i) to the precoded reference signals to extract the precoding matrix (W), including the specific transmit beamforming vector (WUE) designed for the user equipment, and this extracted information is used to generate receive beamformers (vi).Type: GrantFiled: October 4, 2010Date of Patent: June 12, 2012Assignee: Apple Inc.Inventors: Jayesh H. Kotecha, Jayakrishnan C. Mundarath