Frequency Or Phase Modulation Patents (Class 455/42)
  • Patent number: 10212648
    Abstract: Systems and methodologies are described that facilitate efficient cell acquisition in a wireless communication system. In one aspect, a reference signal for use in cell acquisition can be constructed in a bandwidth-agnostic manner such that it contains a common central portion in a predetermined frequency band that is independent of a bandwidth utilized by an associated wireless communication system. The central portion can be constructed as a two-dimensional block in time and frequency that spans a default cell search bandwidth, a predetermined bandwidth specified by synchronization codes or other signals, or another suitable bandwidth. A reference signal can then be constructed form the central portion by tiling or expanding the central portion such that it spans the entire system bandwidth.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: February 19, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Juan Montojo, Byoung-Hoon Kim, Durga Prasad Malladi, Tao Luo
  • Patent number: 10114608
    Abstract: A multi-mode media system operable at a given time in one of a first or a second mode, selectively, the first mode comprising operation to access a media source co-housed with or connected to and operationally integrated with the media system and configured to stream media content to the multi-mode media system for playing by the media system, and the second mode comprising operation of the media system for controlling over a network a media source remote from the multi-mode media system for outputting media content on an output device separate from the multi-mode media system, the media system not being operable in both modes simultaneously nor operable exclusively only in a single one of such modes.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: October 30, 2018
    Assignee: Chestnut Hill Sound, Inc.
    Inventors: Steven Krampf, Evan B. Ross, Trung Quoc Phung
  • Patent number: 10020854
    Abstract: A device and method for signal separation in an orthogonal time frequency space communication system using MIMO antenna arrays. The communication device includes an antenna arrangement and a receiver. The receiver is configured to receive, from the antenna arrangement, a plurality of pilot signals associated with respective locations in a time-frequency plane wherein the plurality of pilot signals were transmitted from a corresponding plurality of transmit antenna elements. The receiver is further configured to receive signal energy transmitted by the plurality of transmit antenna elements and to measure, based upon the plurality of pilot signals, a plurality of two-dimensional time-frequency coupling channels between the plurality of transmit antenna elements and the antenna arrangement. The receiver is also operative to invert a representation of each of the plurality of two-dimensional time-frequency coupling channels to provide a plurality of inverted channel representations.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: July 10, 2018
    Inventors: Ronny Hadani, Shlomo Selim Rakib
  • Patent number: 9998308
    Abstract: The disclosure provides an electronic device, a method and computer-readable medium. The electronic device includes a circuitry. The circuitry is configured to receive a radio communication signal for another device. The circuitry is also configured to determine, based on the radio communication signal, one or more features that can reflect the difference between uplink transmission mode and downlink transmission mode. The circuitry is further configured to judge whether the radio communication signal is for uplink transmission or downlink transmission according to the feature(s).
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: June 12, 2018
    Assignees: Sony Corporation, Tsinghua University
    Inventors: Yu Rao, Wei Chen, Zhigang Cao, Xin Guo, Ryo Sawai, Ryota Kimura
  • Patent number: 9892319
    Abstract: A fingerprint detection apparatus and a fingerprint detection method employ a collection module and a processing module. The collection module is configured to collect fingerprint information and generate a fingerprint detection signal. The processing module is configured to process the fingerprint detection signal and generate fingerprint image data, and includes a frequency mixer. The frequency mixer is configured to perform quadrature mixing and low pass filtering on the fingerprint detection signal, and to convert an alternating current signal of the fingerprint detection signal into a direct current signal. Therefore, the bandwidth of the fingerprint detection signal can be decreased, noises in the fingerprint detection signal can be filtered out, the signal to noise ratio can be improved, the fingerprint detection sensitivity can be enhanced, and the anti-interference capacity can be increased, so that the adaptability of the fingerprint detecting apparatus to an application environment can be improved.
    Type: Grant
    Filed: October 11, 2014
    Date of Patent: February 13, 2018
    Assignee: SHENZHEN GOODIX TECHNOLOGY, LTD.
    Inventors: Rui Ran, Mengta Yang
  • Patent number: 9885751
    Abstract: A method for modifying the execution sequence of tests for testing an object on a test system. The tests include a group of tests that is a candidate for replacement. The method includes: while executing the tests according to the execution sequence and before executing the group of tests, modifying, in real time, the execution sequence including: executing a delay instead of the group of tests, wherein the delay is related to the group of tests.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: February 6, 2018
    Assignee: OPTIMAL PLUS LTD.
    Inventors: Eran Rousseau, Arie Peltz, Shaul Teplinsky
  • Patent number: 9806790
    Abstract: First and second receivers are used to receive respective first and second signals, to process said first and second signals and provide respective first and second measures thereof to respective first and second transmitters. The first and second transmitters are configured to launch the first and second measures, respectively, each comprising a desired component that has originated at a desired source, and an interference component that has originated at an interfering source. The first and/or second transmitters are configured to process and launch the respective first and second measures, properly conditioned, so that upon interception thereof by a receiving element the interference components thereof add destructively and substantially cancel (or at least partially cancel) each other, whereas the desired components avoid substantial cancellation owing to a phase relationship therebetween that differs relative to a phase relationship between the interference components.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: October 31, 2017
    Assignee: Odyssey Wireless, Inc.
    Inventor: Peter D. Karabinis
  • Patent number: 9559472
    Abstract: A desktop USB-charger related product has space to receive an AC power-wire, USB-charger wire, or another charging related wire(s). The USB-charger related product is arranged to be installed on a desk top at a hand-reachable distance from a user by attachment means so that there is no need for the user to bend body or knee in order to charge a device using the charger. The USB-charger related product has at least one USB-port that can supply a desired output-current in the range of from 1.0 A to 12 A and 3.5VDC to 8.5VDC by converting input AC power ranging from 110VAC to 250VAC. The USB-charger product may also incorporate at least one additional device such as an AC outlets, sensor, motion sensor, remote control, time display, LEDs, other lights, a power fail device, a smell device, an audio device, a video device, or other electric or electronic devices.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: January 31, 2017
    Inventor: Tseng-Lu Chien
  • Patent number: 9531324
    Abstract: A frequency synthesizing circuit comprising a first mixer configured to receive a first input signal at a first input thereof, a first filter configured to receive an output signal of the first mixer and remove undesired signal frequencies from the output signal of the first mixer, and a feedback loop. The feedback loop includes a second mixer having a first input connected to the output of the first filter and a second input for receiving a second input signal. The second mixer is configured to mix a signal received at the first input with the second input signal. The feedback loop further includes a third mixer having a first input connected to an output of the second mixer and a second input for receiving a third input signal. The third mixer is configured to mix a signal received at the first input with the third input signal.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: December 27, 2016
    Assignee: Lockheed Martin Corporation
    Inventors: Peter L. Delos, Francis X. McGroary, Edward F. Gross
  • Patent number: 9136982
    Abstract: A transmitter for transmitting information has a mapper for generating a plurality of mapped symbols, each mapped symbol having a first component and a second component, one of the first and second components being an in-phase component and the other of the first and second components being a quadrature component from a codeword; and a component interleaver for generating a plurality of interleaving units to be transmitted in a time sequence, the plurality of interleaving units consisting of at least three different interleaving units, wherein an interleaving unit has a plurality of pairs of first and second components, wherein the component interleaver is configured for assigning all first components and all second components of a codeword to the plurality of interleaving units in accordance with an interleaving rule, so that an I component of an mapped symbol and the Q component of the same mapped symbol are never assigned to one and the same interleaving unit, but to two different interleaving units.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: September 15, 2015
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Marco Breiling, Amaia A. Gomez, Holger Stadali
  • Patent number: 9071313
    Abstract: The present disclosure provides methods and apparatuses for demodulating discrete-time desired signals in a period-Td bandpass desired signal in the presence of interference that results from a period-T bandpass interference signal that has been nonlinear distorted. Estimation of the nonlinear-distorted interference and subsequent cancellation from a received signal, that includes the interference and desired signal, produces residual-interference signals. The demodulation of the residual-interference signals uses an equalization technique when Td is not equal to T. The estimation, cancellation, and demodulation are adapted for changing nonlinear distortion effects.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: June 30, 2015
    Inventor: Peter Monsen
  • Patent number: 9026048
    Abstract: A near field communications (NFC) device is disclosed that detects a presence of another NFC capable device within its magnetic field. The NFC device observes signal metrics of an observed detection signal at various intervals. The NFC device determines a statistical relationship based upon at least two first signal metrics from among the signal metrics to determine an estimate of at least one second signal metric from among the signal metrics. The NFC device compares a difference between the estimate of the signal metric of the at least one second signal metric and the at least one second signal metric. The NFC capable device makes a first determination that another NFC device is present within its magnetic field when the difference indicates that the at least one second signal metric is non-linearly related to the at least two first signal metrics.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: May 5, 2015
    Assignee: Broadcom Corporation
    Inventors: Philip Stewart Royston, Steven Deane Hall, Brima Ibrahim
  • Patent number: 9020422
    Abstract: A system includes a plurality of stations capable of communicating with each other. A station of the system may comprise multiple antenna subassemblies and a receiver coupled to the subassemblies. The station is operable to activate one or more of the subassemblies to determine a direction of a first incoming signal, and to then activate another one or more of the subassemblies to receive a second incoming signal from substantially the same direction. Alternatively, the station may comprise multiple antenna subassemblies and a receiver coupled to the subassemblies and operable to activate each of the subassemblies for a respective interval to service at least one respective transmitting station covered by the activated subassembly during the interval.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: April 28, 2015
    Assignee: STMicroelectronics, Inc.
    Inventors: Liwen Chu, George A. Vlantis
  • Patent number: 8982924
    Abstract: Various embodiments are directed to systems and methods for combining a plurality of codes. The plurality of codes may be binary codes having possible logical values of ?1 and +1 and may comprise an even number of codes. An output of the combining v0,k may be given by: v0=sgn(vi), where vi is the sum of the first plurality of codes at the first time. Embodiments for allocating different power levels among various codes are presented.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: March 17, 2015
    Assignee: The Aerospace Corporation
    Inventor: Rajendra Kumar
  • Patent number: 8965290
    Abstract: Methods and systems for transmitting a spectrally efficient signal. The method includes frequency modulating an input signal in a transmitter to generate a first frequency modulated (FM) signal and generating in the transmitter an amplitude modulated (AM) component based at least on the input signal. The method may then include generating a second FM signal based at least on the AM component and the first FM signal and sending the second FM signal to a receiver.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: February 24, 2015
    Assignee: General Electric Company
    Inventor: Richard Alan Place
  • Patent number: 8954008
    Abstract: A medical device communication system transmitter may include a resonator coupled to a local oscillator for stabilizing an operating frequency of the local oscillator. A control device of the transmitter receives an open-loop control signal, and the local oscillator and the control device are configured to generate a direct modulated radio frequency transmission signal in response to the open-loop control signal.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: February 10, 2015
    Assignee: Medtronic, Inc.
    Inventors: Yu Wang, George C. Rosar
  • Patent number: 8903012
    Abstract: A new coded continuous phase modulation (CPM) scheme is proposed to enhance physical layer performance of the current DVB-RCS standard for a satellite communication system. The proposed CPM scheme uses a phase pulse design and combination of modulation parameters to shape the power spectrum of CPM signal in order to improve resilience to adjacent channel interference (ACI). Additionally, it uses a low complexity binary convolutional codes and S-random bit interleaving. Phase response using the proposed CPM scheme is a weighted average of the conventional rectangular and raised-cosine responses and provides optimum response to minimize frame error rate for a given data rate.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: December 2, 2014
    Assignee: Hughes Network Systems, LLC
    Inventors: Rohit Seshadri, Mustafa Eroz, Lin-Nan Lee
  • Patent number: 8903319
    Abstract: A method, apparatus, and system for transmitting and controlling uplink diversity signals in a mobile communication device. While in a soft handoff situation, a mobile communications device may receive a phase feedback signal from a non-serving base station. The mobile device may calculate a modified phase parameter based on the phase feedback signal from the non-serving base station in order to minimize interference with the non-serving base station, for example, by calculating a modified value of a phase difference in a direction opposite to the direction desired by the non-serving base station. In some embodiments of the invention, the mobile device may determine whether to calculate the modified phase parameter in a direction opposite to the direction indicated by the phase feedback signal of the non-serving base station based on a comparison of power feedback signals received from the non-serving and serving base stations.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: December 2, 2014
    Assignee: Google Inc.
    Inventors: Sherwin J. Wang, Kenneth Kludt, Phil F. Chen, Haim Harel
  • Patent number: 8890658
    Abstract: An RFID system using an M pulse amplitude modulation (M-PAM) or M quadrature amplitude modulation (M-QAM) scheme using a plurality of load-modulators, a plurality of antennas, and a communication method thereof are provided. The RFID system includes: an RFID tag; and a reader device communicating with the RFID device, wherein the RFID tag includes: N load-modulators an N antennas communicating with the reader device in any one scheme of M-pulse amplitude modulation (M-PAM) and M-quadrature amplitude modulation (M-QAM) in which modulation of an M level is performed and operated corresponding to the M level.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: November 18, 2014
    Assignees: Electronics and Telecommunications Research Institute, Seoul National University of Technology Center for Industry Collaboration
    Inventors: Ji Hoon Bae, Chan Won Park, Hyung Chul Park, Jong Suk Chae, Cheol Sig Pyo
  • Patent number: 8892052
    Abstract: In various embodiments, a method for determining whether a signal includes a wanted signal may be provided. The method may include determining a frequency at which the signal has a signal energy above a first pre-defined signal energy threshold and determining whether the signal includes a wanted signal, based on whether the signal has a signal energy above a second pre-defined signal energy threshold in a pre-defined frequency range in a frequency neighborhood of the determined frequency.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: November 18, 2014
    Assignee: Agency for Science, Technology and Research
    Inventors: Yonghong Zeng, Ser Wah Oh, Tran Phuoc Cuong Le, Weiqiang Zhang
  • Patent number: 8879995
    Abstract: A remote device powering module, system and method for providing RF power to an electronic device located in a bounded area. The remote device powering module comprises a phased array antenna and is connected to a source to convert the power to an electric signal and to apply a phase reference to the electrical signal. The electrical signal is shifted with a shifting module and phased array antenna that comprises a plurality of radiating elements generates and transmits RF power via RF waves using the phase reference and the shifted phase. The RF power is then converted by the receiver to direct-voltage to be provided to the electronic device.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: November 4, 2014
    Assignee: Viconics Electronics Inc.
    Inventors: Louis Viglione, Dino Mason, Paolo Primiani
  • Publication number: 20140308899
    Abstract: A multi-standards transceiver includes: a first synthesizer arranged to generate a first oscillating signal; a second synthesizer arranged to generate a second oscillating signal; a first transceiver; a second transceiver; and a multiplexer coupled to the first synthesizer and the second synthesizer; wherein when the multi-standards transceiver operates under a first frequency mode, the first transceiver is arranged to use the first oscillating signal to modulate a first analog signal and the multiplexer is arranged to output the second oscillating signal to the second transceiver so that the second transceiver uses the second oscillating signal to modulate a second analog signal.
    Type: Application
    Filed: December 24, 2013
    Publication date: October 16, 2014
    Applicant: MEDIATEK INC.
    Inventors: Tsung-Ming Chen, Chia-Hsin Wu, Albert Chia-Wen Jerng, George Chien
  • Patent number: 8862063
    Abstract: Methods and devices for phase shifting an RF signal for a base station antenna are provided. The device includes a transmission line that has a stationary ground plane coupled to the top of a substrate and a signal line on the bottom of the substrate. The signal line has an input port and an output port. The input port receives the RF signal with a certain phase and travels across the bottom of the substrate to the output port. The RF signal has a different phase at the output port because defected ground structures etched on the stationary ground plane shift the phase of the RF signal. In addition, the device includes a movable ground plane that may cover a portion of the defected ground structures, the substrate, and the stationary ground plane such that the moveable ground plane further adjusts the phase of the RF signal.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: October 14, 2014
    Assignee: Thiagarajar College of Engineering
    Inventors: V. Abhaikumar, S. Raju, S. Deepak Ram Prasath, R. Senthilkumar, P. Vasikaran
  • Patent number: 8818282
    Abstract: An integrated circuit is described. The integrated circuit includes a global positioning system core that generates a GPS clock signal using an inductor-capacitor voltage controlled oscillator. The integrated circuit also includes a transceiver core configured to use the GPS clock signal. The transceiver core may not include a voltage controlled oscillator.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: August 26, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Beomsup Kim, Tzu-Wang Pan, Young Gon Kim
  • Patent number: 8811914
    Abstract: A method and apparatus for processing a terahertz frequency electromagnetic beam are disclosed. For example, the method receives the terahertz frequency electromagnetic beam via a metamaterial having a plurality of addressable magnetic elements, where a resonant frequency of each of the plurality of addressable magnetic elements is capable of being programmably changed via an adjustment, and activates selectively a subset of the plurality of addressable magnetic elements to manipulate the terahertz frequency electromagnetic beam.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: August 19, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: David Michael Britz, Robert Raymond Miller, II
  • Patent number: 8775660
    Abstract: Systems, methods, and equipment for use in the management of network topology and bandwidth for computing networks are provided. In an illustrative implementation of a device acting as a patch panel is provided. The patch panel works on both the physical wire and on the frequencies of the wire to route data to appropriate destination points. For example, both ADSL and telephony could be bridged among copper wires, using several independent busses. Home Phone Network Alliance Association (HPNA) standardized data could either be bridged among wires, or connected to an internal switching device, that would store and forward the native Ethernet packets used by HomePNA in a way similar to that done by Ethernet switches today. Additionally, an Ethernet uplink could attach the HPNA ports to a larger network or to a DSL Modem, and HPNA/ADSL could be removed from wires that might have privacy concerns or otherwise need filters to perform properly.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: July 8, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Thomas Anschutz, Randy Zimler
  • Patent number: 8774317
    Abstract: A system and method for a radio controlled clock receiver adapted to extract timing and time information from a phase modulated signal. The official time signal is broadcast from a central location using a modified modulation scheme, which adds phase modulation over the legacy amplitude modulation, such as the legacy WWVB pulse width modulated (PWM)/amplitude shift keying (ASK) modulation, thereby allowing for improved performance. The information modulated onto the phase contains a known synchronization sequence having good autocorrelation properties, error-correcting coding for the time information and notifications of daylight-saving-time (DST) transitions that are provided months in advance. The modulation scheme is based on a form of phase modulation, such as binary-phase-shift-keying (BPSK) or phase reversal keying (PRK).
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: July 8, 2014
    Assignee: Everset Technologies, Inc.
    Inventor: Oren E. Eliezer
  • Publication number: 20140154991
    Abstract: A low noise detection system is disclosed in which a modulator located in a transmitter or a receiver is configured to convert a voltage data signal to a frequency signal, to modulate a baseband signal with the voltage data, and to output the modulated data signal. The receiver further includes a log detection amplifier configured to receive the modulated data signal and to regeneratively demodulate the modulated data signal to extract the data in an amplified analog data signal while not significantly amplifying any noise in the modulated data signal. The receiver further includes a digital conversion circuit for converting the amplified analog signal into a digital data signal.
    Type: Application
    Filed: December 3, 2013
    Publication date: June 5, 2014
    Inventors: Forrest Brown, Patrick Rada
  • Patent number: 8743862
    Abstract: In a wireless 802.15.4 communication system (300), a high-speed data frame structure (340) is provided which uses the 802.15.4 SHR structure that is spread modulated to obtain the synchronization benefits of the 802.15.4 protocol, but which uses a modified data frame structure for the payload portion without using spreading to thereby improve its transmission efficiency. The transmission efficiency can be further increased by increasing the size of the data payload (and correspondingly, the frame length size).
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: June 3, 2014
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Clinton C Powell, Kuor-Hsin Chang, Bing Xu
  • Patent number: 8730877
    Abstract: In a single-carrier frequency division multiple access (SC-FDMA) system that utilizes interleaved FDMA (IFDMA) or localized FDMA, multiple transmitters may transmit their pilots using time division multiplexing (TDM), code division multiplexing (CDM), interleaved frequency division multiplexing (IFDM), or localized frequency division multiplexing (LFDM). The pilots from these transmitters are then orthogonal to one another. A receiver performs the complementary demultiplexing for the pilots sent by the transmitters. The receiver may derive a channel estimate for each transmitter using an MMSE technique or a least-squares technique. The receiver may receive overlapping data transmissions sent on the same time-frequency block by the multiple transmitters and may perform receiver spatial processing with spatial filter matrices to separate these data transmissions.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: May 20, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Ravi Palanki, Aamod Khandekar, Arak Sutivong
  • Patent number: 8718018
    Abstract: A user equipment (UE) is provided which reduces uplink signaling overhead in the process of reporting inter-frequency measurement results over a RACH. For measurement reporting, the UE receives an SIB including a cell information list for non-used frequency cells and a threshold from an RNC, compares signal strengths of signals received from the non-used frequency cells with the threshold, and acquires at least one inter-frequency cell ID indicating at least one non-used frequency cell having signal strength exceeding the threshold from the cell information list. The at least one inter-frequency cell ID is included in a RACH message as measurement result information for the at least one non-used frequency cell, and transmitted to the RNC. The RNC determines that the cell corresponding to the inter-frequency cell ID has signal strength exceeding the threshold.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: May 6, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyeong-In Jeong, Gert Jan Van Lieshout, Himke Van Dervelde, No-Jun Kwak
  • Patent number: 8711956
    Abstract: A communications system may include a first communications device that may include a transmitter and a modulator cooperating therewith to modulate a coded waveform using a constant phase modulation (CPM) to generate a non-linear CPM waveform, and generate a linear representation of the non-linear CPM waveform, the linear representation including a plurality of pulses. The transmitter and a modulator may further cooperate to remove at least some of the plurality of pulses to define a modified linear representation of the non-linear CPM waveform, and transmit the modified linear representation of the non-linear CPM waveform. The communications system may further include a second communications device that may include a receiver and a single pulse-matched filter linear demodulator cooperating therewith to demodulate the modified linear representation of the non-linear CPM waveform transmitted from the first communications device.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: April 29, 2014
    Assignee: Harris Corporation
    Inventor: Michael A. Wadsworth
  • Patent number: 8706030
    Abstract: A radio frequency communication device has data transmission means and data receiving means. The data transmission means comprise load modulating means being adapted to receive a radio frequency carrier signal emitted by another RF communication device and to modulate the RF carrier signal by means of load modulation in accordance with data to be sent. The data receiving means comprise a RF frequency carrier signal generator being adapted to emit a radio frequency carrier signal and load demodulating means being connected to an emission path of the radio frequency carrier signal and demodulating the radio frequency carrier signal when it has been load modulated by another RF communication device.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: April 22, 2014
    Assignee: NXP B.V.
    Inventors: Harald Witschnig, Erich Merlin, Alexander Maier
  • Patent number: 8705496
    Abstract: A method and apparatus for controlling transmission and reception of dedicated pilots according to an MCS level in a wireless communication system are provided, in which an MCS level is determined for a data channel, the amount of resources for sending dedicated pilots is determined in inverse proportion to the MCS level, a pilot channel signal including basic pilots mapped to resources allocated to a pilot channel, a control channel signal including control information mapped to resources allocated to a control channel, and a data channel signal including the dedicated pilots mapped to the determined amount of resources being part of resources allocated to the data channel and data mapped to the remaining of the resources allocated to the data channel are generated, and the pilot channel signal, the control channel signal, and the data channel signal are multiplexed and sent in the mapped resources.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: April 22, 2014
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Yun-Ok Cho, Hwan-Joon Kwon, Jin-Kyu Han, Yu-Chul Kim
  • Patent number: 8699945
    Abstract: The invention relates to the establishment of a radio link using at least two spatial modes (in other words at least horizontal and vertical or right and left circular modes) by means of corresponding antennae or a line link using at least three conductors and the use of at least one transmission oscillator and no oscillator on the reception side, wherein the transmitter has amplitude and/or phase and/or frequency modulation and the at least two different polarized modes are received by means of at least two antennae and processed by one or more multipliers, mixers, phase comparators, frequency comparators, or power detectors.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: April 15, 2014
    Assignee: Fachhochschule Aachen
    Inventor: Holger Heuermann
  • Patent number: 8688045
    Abstract: Exemplary embodiments include a frequency modulation (FM) transmitter and a non-FM receiver, which may be implemented on the same IC chip. The FM transmitter may include a digital FM modulator, a lowpass filter, an amplifier, and an LC tank circuit. The digital FM modulator may receive a digital input signal, perform FM modulation with the digital input signal, and provide a digital FM signal. The lowpass filter may filter the digital FM signal and provide a filtered FM signal. The amplifier may amplify the filtered FM signal and provide an output FM signal. The LC tank circuit may filter the output FM signal. The digital FM modulator may perform FM modulation by changing a variable divider ratio of a multi-modulus divider within a PLL. A delta-sigma modulator may receive the digital input signal and generate a modulator output signal used to obtain the variable divider ratio.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: April 1, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: I-Hsiang Lin, Tzu-wang Pan, Yi Zeng
  • Patent number: 8670720
    Abstract: Methods and devices for phase shifting an RF signal for a base station antenna are provided. The device includes a transmission line that has a stationary ground plane coupled to the top of a substrate and a signal line on the bottom of the substrate. The signal line has an input port and an output port. The input port receives the RF signal with a certain phase and travels across the bottom of the substrate to the output port. The RF signal has a different phase at the output port because defected ground structures etched on the stationary ground plane shift the phase of the RF signal. In addition, the device includes a movable ground plane that may cover a portion of the defected ground structures, the substrate, and the stationary ground plane such that the moveable ground plane further adjusts the phase of the RF signal.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: March 11, 2014
    Assignee: Thiagarajar College of Engineering
    Inventors: Varadhan Abhaikumar, Seenivasan Raju, Subburaj Ramprasath Deepak Ram, Rajagopal Senthilkumar, Prabhakaran Vasikaran
  • Patent number: 8655396
    Abstract: A method for a wireless communication includes receiving or storing a peak to average (PAR) back off value; and applying the PAR back off value to determine the transmission power and rate for SIMO and MIMO transmissions. In one aspect, the PAR back off value is at least partially based on modulation type. In another aspect, the PAR back off value is more for higher order QAM than for QPSK. The power allocation algorithm for different UL MIMO schemes is described as follows. For MIMO without antenna permutation (e.g. per antenna rate control), different PAR back off values are considered for different data streams. For MIMO with antenna permutation or other unitary transformation such as virtual antenna mapping or precoding, the PAR back off are determined based on combined channel. The transmission data rate depends on power and also the receiver algorithms such as a MMSE receiver or MMSE-SIC receiver.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: February 18, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Durga Prasad Malladi, Hao Xu
  • Patent number: 8644765
    Abstract: In one or more aspects data packets are iteratively transmitted to a receiver using predefined spatial mapping matrices, channel estimates are received from the receiver responsive to the iteratively transmitted data packets, and one of the predefined spatial mapping matrices is selected for transmitting additional data packets to the receiver based on the received channel estimates.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: February 4, 2014
    Assignee: Marvell World Trade Ltd.
    Inventors: Hongyuan Zhang, Rohit U Nabar
  • Patent number: 8639462
    Abstract: A method of estimating the time of flight of a burst signal includes: receiving the burst signal; determining the slope of the phase characteristic of the Fourier transform of the received burst signal; and estimating the time-of-flight of the burst signal from the slope of the phase characteristic of the Fourier transform of the received burst signal.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: January 28, 2014
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventor: Osvaldo Buccafusca
  • Patent number: 8633796
    Abstract: There is provided an information processing system that includes an information processing terminal equipped with an IC chip capable of non-contact communication with a reader/writer, a data provider device that stores a first data record for creating service data, and a control information processing device that creates the service data and transmits the service data to the information processing terminal. The information processing terminal includes a terminal communication portion that acquires the first data record from the data provider device and transmits the first data record to the control information processing device. The control information processing device includes a control communication portion that receives the first data record, a control storage portion that stores a second data record for creating the service data, and a data creation portion that creates the service data based on the first data record and the second data record.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: January 21, 2014
    Assignee: FeliCa Networks, Inc.
    Inventors: Naoto Tobita, Shigeki Wakasa, Makoto Daicho, Hiroaki Yamada
  • Patent number: 8630265
    Abstract: A method and apparatus for reconfiguring a wireless transmit/receive unit (WTRU) are directed to receiving an active set update message indicating that a mode of operation allowing a certain modulation scheme is enabled or disabled and performing at least one of: performing a MAC reset procedure, updating a set of reference enhanced transport format combination indicators (E-TFCIs) and associated power offsets, determining actions related to E-DPCCH boosting, modifying information related to an enhanced dedicated channel (E-DCH), and modifying an index that indicates an E-DCH transport block size table. The update message includes at least one modified information element (IE).
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: January 14, 2014
    Assignee: Interdigital Patent Holdings, Inc.
    Inventors: Paul Marinier, Benoit Pelletier, Diana Pani
  • Patent number: 8611820
    Abstract: Techniques for designing a communications unit including a signal separation module for energy harvesting. In an exemplary aspect, the signal separation module includes first and second quadrature hybrids coupled by band-pass filters (BPF's). Incoming signals within the pass-band of the BPF's are directed through the quadrature hybrids and through the BPF's, and emerge as a desired pass-band signal to be processed by an RX processing module. Incoming signals lying outside the pass-band of the BPF's are reflected from the BPF's back to the first quadrature hybrid, and output as a non-pass-band signal to be processed by an energy harvesting module. In a further exemplary aspect, the signal separation module resides in a detachable module coupleable to a wireless communications device, and a signal transmitted by the wireless communications device is coupled to the signal separation module for energy harvesting.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: December 17, 2013
    Assignee: QUALCOMM Incorporated
    Inventor: Robert P. Gilmore
  • Publication number: 20130324048
    Abstract: A vehicle communication system for communicating with a person who is within a vehicle includes a device for hearing audible noises that emanate within the vehicle at locations external to the vehicle without making physical contact with the vehicle. Communication from the person in the vehicle to a person external to the vehicle is performed by aiming a light beam from the vehicle and receiving reflections of the light beam. The light beam is modulated by vibration of the vehicle caused the audible noises from within the vehicle. The received light beam is then processed to reproduce the audible noises so that the audible noises can be heard from a location outside of the vehicle, even when the vehicle is sealed (windows closed, etc.).
    Type: Application
    Filed: August 9, 2013
    Publication date: December 5, 2013
    Inventor: Eddie B. Lofton
  • Patent number: 8600419
    Abstract: Methods, apparatuses, controllers, systems, and terminals can, in certain embodiments, determine a number and properties of potential interferers in a plurality of available radio channels. The properties of the potential interferers can include modulation methods used by the potential interferers. A network element responsible for channel allocation can perform channel allocation for a terminal and select a modulation method for the allocated channel on the basis of the determination.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: December 3, 2013
    Assignee: Core Wireless Licensing S.A.R.L.
    Inventors: Jari Hulkkonen, Olli Piirainen
  • Patent number: 8598992
    Abstract: A RFID transponder includes a resonant circuit for providing a clock signal at a predetermined clock frequency, a self-calibration stage for calibrating the resonant circuit's current clock frequency towards the predetermined clock frequency. The self-calibration stage is adapted to compare a first clock frequency of the resonant circuit determined during an interrogation period, during which the resonant circuit is excited by an external RF signal, with a second clock frequency determined during a frequency maintenance period, during which the resonant circuit is excited internally through an oscillation maintenance circuit of the RFID transponder and to calibrate the resonant circuit towards the predetermined clock frequency based on the comparison result.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: December 3, 2013
    Assignee: Texas Instruments Deutschland GmbH
    Inventor: Bernd Hertwig
  • Publication number: 20130288607
    Abstract: The present invention provides a radio frequency front-end module, and a radio access network device and a control method thereof. The radio frequency front-end module includes a phase-shifting and attenuating unit, a radio frequency unit, and an antenna, where the radio frequency unit is respectively connected to the phase-shifting and attenuating unit and the antenna; the phase-shifting and attenuating unit is configured to receive a control signal and a radio frequency signal sent by a radio access network device and perform phase-shifting processing, or attenuating processing, or phase-shifting and attenuating processing on the radio frequency signal according to the control signal. The technical solution according to the embodiments of the present invention can be used to implement an operation mode of an intelligent antenna having multiple antennas cooperating with each other.
    Type: Application
    Filed: April 11, 2013
    Publication date: October 31, 2013
    Applicant: Huawei Technogies Co., Ltd.
    Inventor: Huawei Technogies Co., Ltd.
  • Patent number: 8532575
    Abstract: An application for a two-way communication system for communicating with a person who is within a second vehicle includes a short-range radio transmitter within a first vehicle to transmit audio to a radio within the second vehicle. Communication from the person in the second vehicle to a person in the first vehicle is performed by aiming a light beam from the first vehicle at the second vehicle and receiving reflections of the light beam at the first vehicle. The light beam is modulated by vibration of the second vehicle caused by the person speaking in the second vehicle. The received light beam is then processed to reproduce the sound of the person's voice.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: September 10, 2013
    Inventor: Eddie B. Lofton
  • Publication number: 20130231057
    Abstract: There is provided a stationary analog FM-receiver for receiving analog wirelessly transmitted FM-audio signals from at least one mobile unit. The frequency has a frequency demodulator (FDM) for demodulating the received FM-audio signals. The FM-receiver further has a link quality unit (LQE) for determining a link quality for the wireless transmission of the FM-audio signals. The link quality unit (LQE) has a high-pass filter (HP) with a limit frequency for high-pass filtration of an output signal of the frequency demodulator (FDM) and a power determining unit (SE, LBE) for determining the power of the output signal of the high-pass filter (HP). The limit frequency of the high-pass filter (HP) lies in the region of between 20 kHz and 80 kHz, in particular in the region of between 50 kHz and 80 kHz.
    Type: Application
    Filed: January 29, 2013
    Publication date: September 5, 2013
    Applicant: Sennheiser electronics GmbH & Co. KG
    Inventors: Sebastian GEORGI, Carsten Bischoff
  • Patent number: 8527003
    Abstract: A system and apparatus including a wireless network architecture that provides broadband data network coverage over an expandable geographic area. A media access control layer is also provided that facilitates access to the broadband wireless network. A high-frequency wireless modem enables high data rate access to the wireless network in a spectrally-efficient manner using SSB modulation. A wideband millimeter-wave antenna includes a cosecant-squared reflector enabling signal propagation between network elements thereby enabling seamless wireless communications. A millimeter-wave polarizer, and a septum polarizer each convert between linear and circular polarization. A cross-shaped horn antenna adapted for circularly polarized signals can also be used in combination with the septum polarizer. A combined horn antenna is fed using a microstrip patch antenna.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: September 3, 2013
    Assignee: Newlans, Inc.
    Inventors: Dev V. Gupta, Kenneth Wood, Abbie Mathew