子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | Method and Apparatus for Quadrature Signal Modulation | US15095787 | 2016-04-11 | US20170288935A1 | 2017-10-05 | Guido Montorsi; Sergio Benedetto; Yan Xin; Min Yan |
| Methods and apparatus for facilitating wireless communication using digital Quadrature Amplitude Modulation are disclosed. A mapping module electronic component of a wireless communication device utilizes a signal constellation for quadrature modulating a signal for transmission or quadrature demodulating a received signal. The signal constellation includes multiple constellation symbols and associated bit sequences. Specific signal constellations are disclosed. The signal constellations may be obtained through an optimization procedure which accounts for both phase noise and power amplifier nonlinearity. | ||||||
| 182 | Transmitter diversity technique for wireless communications | US14950332 | 2015-11-24 | US09749032B2 | 2017-08-29 | Siavash Alamouti; Vahid Tarokh |
| A simple block coding arrangement is created with symbols transmitted over a plurality of transmit channels, in connection with coding that comprises only simple arithmetic operations, such as negation and conjugation. The diversity created by the transmitter utilizes space diversity and either time or frequency diversity. Space diversity is effected by redundantly transmitting over a plurality of antennas, time diversity is effected by redundantly transmitting at different times, and frequency diversity is effected by redundantly transmitting at different frequencies: Illustratively, using two transmit antennas and a single receive antenna, one of the disclosed embodiments provides the same diversity gain as the maximal-ratio receiver combining (MRRC) scheme with one transmit antenna and two receive antennas. The principles of this invention are applicable to arrangements with more than two antennas, and an illustrative embodiment is disclosed using the same space block code with two transmit and two receive antennas. | ||||||
| 183 | SIGNAL SEPARATION IN AN ORTHOGONAL TIME FREQUENCY SPACE COMMUNICATION SYSTEM USING MIMO ANTENNA ARRAYS | US15374995 | 2016-12-09 | US20170222700A1 | 2017-08-03 | Ronny Hadani; Shlomo Selim Rakib |
| 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. | ||||||
| 184 | MODULAR ROBOT | US15487591 | 2017-04-14 | US20170215666A1 | 2017-08-03 | Chikyung Won; Scott Thomas Burnett; Stephen A. Hickey; Deepak Ramesh Kapoor; Zivthan A. Dubrovsky; Selma Svendsen; Robert Rizzari; Paul E. Sandin |
| A coverage robot including a chassis, multiple drive wheel assemblies disposed on the chassis, and a cleaning assembly carried by the chassis. Each drive wheel assembly including a drive wheel assembly housing, a wheel rotatably coupled to the housing, and a wheel drive motor carried by the drive wheel assembly housing and operable to drive the wheel. The cleaning assembly including a cleaning assembly housing, a cleaning head rotatably coupled to the cleaning assembly housing, and a cleaning drive motor carried by cleaning assembly housing and operable to drive the cleaning head. The wheel assemblies and the cleaning assembly are each separately and independently removable from respective receptacles of the chassis as complete units. | ||||||
| 185 | SYSTEM AND METHOD FOR TWO-DIMENSIONAL EQUALIZATION IN AN ORTHOGONAL TIME FREQUENCY SPACE COMMUNICATION SYSTEM | US15258970 | 2016-09-07 | US20170099122A1 | 2017-04-06 | Ronny Hadani; Shlomo Selim Rakib |
| A system and method for receiving communication signals that have been spread in two dimensions. The method includes receiving signals representative of data that has been two-dimensionally spread and transmitted over a communication channel. The method further includes processing the signals to determine equalization coefficients based upon a two-dimensional time-frequency impulse response of the communication channel. A two-dimensional signal equalization procedure is then performed using the equalization coefficients. | ||||||
| 186 | COMMUNICATION SYSTEM AND COMMUNICATION DEVICE | US15306364 | 2014-04-25 | US20170048056A1 | 2017-02-16 | Susumu KUSAKABE |
| Provided is a communication system in which one transmission path is shared by a plurality of communication devices, wherein the plurality of communication devices each includes a transmitter that repeatedly transmits one packet to the transmission path with a period of the communication device until a prescribed condition is satisfied, and a receiver that integrates a signal on the transmission path over a period of another communication device until a prescribed condition is satisfied. | ||||||
| 187 | MULTI-STAGE SENSING/CONTROL/IDENTIFICATION DEVICE HAVING PROTECTED COMMUNICATION AND REMOTE POWER | US15255364 | 2016-09-02 | US20160373837A1 | 2016-12-22 | Kurt J. Sobanski; Joseph V. Mantese; Brian L. McCabe; Joseph Zacchio |
| Sensing/control/identification devices for machines are provided. The devices include a first stage having a rectification and power conditioning module configured to receive electromagnetic (EM) transmissions via waveguide confinement and convert said EM transmissions to electrical power, a communication interface module configured to receive power from the rectification and conditioning module and at least one of receive or transmit EM transmissions/communications via waveguide confinement, and a control module configured to receive EM transmission data from the communication interface for processing and/or preparing EM communications for transmission. The devices further include a second stage having a tunable control module configured to process and convert instructions or commands from the control module of the first stage into analog or digital signals and generate and transmit an output signal. At least one connection is between the first stage and the second stage to enable communication between the first and second stages. | ||||||
| 188 | ELECTROMAGNETIC COMMUNICATION THROUGH COMPONENTS OF A MACHINE | US15255192 | 2016-09-02 | US20160373836A1 | 2016-12-22 | Kurt J. Sobanski; Joseph V. Mantese |
| A system of a machine includes a network of a plurality of sensing/control/identification devices distributed throughout the machine. Each of the sensing/control/identification devices is associated with at least one sub-system component of the machine and operable to communicate through a plurality of electromagnetic signals. Shielding surrounding at least one of the sensing/control/identification devices to contain the electromagnetic signals proximate to the at least one sub-system component. A communication path is integrally formed in/on a component of the machine to route a portion of the electromagnetic signals through the component. A remote processing unit is operable to communicate with the network of the sensing/control/identification devices through the electromagnetic signals. | ||||||
| 189 | ENABLING HIDDEN NODE PROTECTION PROCEDURE | US14866753 | 2015-09-25 | US20160359572A1 | 2016-12-08 | Yan ZHOU; Gwendolyn Denise BARRIAC; Simone MERLIN; George CHERIAN |
| In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a first device. The first device determines a transmission link condition for transmitting at least one frame to a second device, the transmission link condition affecting interference received by the second device from a hidden node when the second device is receiving the at least one frame. The first device also determines whether the transmission link condition satisfies a predetermined criterion. The first device further enables a hidden node protection procedure when the transmission link condition satisfy the predetermined criterion, the hidden node protection procedure reserving a medium used for transmitting the at least one frame to protect reception at the second device from the interference caused by the hidden node. The first device yet further transmits the at least one frame to the second device. | ||||||
| 190 | METHOD AND APPARATUS FOR TRANSMITTING DATA SIGNAL BY USING MASSIVE MIMO IN A WIRELESS ACCESS SYSTEM | US15113989 | 2015-03-03 | US20160344455A1 | 2016-11-24 | Sanggook KIM; Wookbong LEE |
| The present invention relates to a wireless access system, and more particularly, to a method and apparatus for transmitting data signal by using a massive Multi Input Multi Output (MIMO). In one aspect of the present invention, a method for transmitting data signals by using a massive Multi Input Multi Output (MIMO), the method is performed by a transmitter and comprises steps of inputting input bits of data signals to a channel encoder; outputting from the channel encoder a first coded bit set including one or more coded bits and second coded bit sets including one or more coded bits; transmitting first data signals of the first coded bit set by applying a first MIMO mode; and transmitting second data signals of the second coded bit sets by applying a second MIMO mode. | ||||||
| 191 | Semiconductor device, receiver, transmitter, transceiver and communication system | US14332657 | 2014-07-16 | US09496916B2 | 2016-11-15 | Masao Nakadaira |
| A semiconductor device, includes a clock and data recovery unit to which a receive signal is inputted and which extracts, based on an operation clock signal, a clock signal and a data signal from the receive signal, a frequency error adjusting unit which generates a frequency error signal indicating a frequency error between the clock signal extracted from the receive signal and the operation clock signal, an operation clock generation unit which controls, based on the frequency error signal, a frequency of the operation clock signal, and a Spread Spectrum Clock Generator (SSCG) unit which varies the frequency of the operation clock signal by the SSCG unit based on the frequency error signal. | ||||||
| 192 | Method and apparatus for wireless communication using an acoustic signal | US14469417 | 2014-08-26 | US09338002B2 | 2016-05-10 | Hee-Won Jung; Seung-Gun Park; Jun-Ho Ko; Sang-Mook Lee; Gi-Sang Lee; Sergey Zhidkov |
| Systems, apparatuses, and methods for securing wireless communication using an acoustic signal are described. In one method involving a first and second device, the second device generates, when connecting to the first device, connection initiation information including key information for secure communication, converts the connection initiation information to an acoustic signal, and transmits the acoustic signal to the first device through an acoustic communication channel. Then the second device monitors a radio wireless channel, which is secured using the key information for secure communication, to determine whether a valid response is received from the first device and, upon receipt of the valid response, discontinues transmission of the acoustic signal and begins communicating with the first device securely on the radio wireless channel. | ||||||
| 193 | Opportunistic active interference cancellation using RX diversity antenna | US14152586 | 2014-01-10 | US09306654B2 | 2016-04-05 | Insoo Hwang; Bongyong Song; Samir Salib Soliman |
| A method of performing interference cancellation (IC) in a wireless communication device having a receiver comprising at least a primary receiver chain and a diversity receiver chain includes determining an interference level of a transmitted signal on the receiver; determining whether the interference level is within a predetermined range; selecting a first mode of operation if the interference level is within a predetermined range; and selecting a second mode of operation if the interference level is not within the predetermined range. The first mode includes receiving, at the primary receiver chain, a first signal corresponding to the transmitted signal; receiving, at the diversity receiver chain, a second signal corresponding to the transmitted signal for providing to an IC circuit; generating, at the IC circuit, an output signal based on the second signal; and generating a cancellation signal based on the output signal and the first signal. | ||||||
| 194 | TRANSMITTER DIVERSITY TECHNIQUE FOR WIRELESS COMMUNICATIONS | US14950332 | 2015-11-24 | US20160080066A1 | 2016-03-17 | Siavash Alamouti; Vahid Tarokh |
| A simple block coding arrangement is created with symbols transmitted over a plurality of transmit channels, in connection with coding that comprises only simple arithmetic operations, such as negation and conjugation. The diversity created by the transmitter utilizes space diversity and either time or frequency diversity. Space diversity is effected by redundantly transmitting over a plurality of antennas, time diversity is effected by redundantly transmitting at different times, and frequency diversity is effected by redundantly transmitting at different frequencies: Illustratively, using two transmit antennas and a single receive antenna, one of the disclosed embodiments provides the same diversity gain as the maximal-ratio receiver combining (MRRC) scheme with one transmit antenna and two receive antennas. The principles of this invention are applicable to arrangements with more than two antennas, and an illustrative embodiment is disclosed using the same space block code with two transmit and two receive antennas. | ||||||
| 195 | Power amplification device and transmitter | US14626712 | 2015-02-19 | US09240812B2 | 2016-01-19 | Masahiro Kumagawa; Akinori Daimo; Hisashi Adachi |
| A power amplification device includes: a first power-amplifier array including a plurality of first switching elements that constitute a class-D power amplifier for a higher bits; a second power-amplifier array including a plurality of second switching elements that constitute a class-D power amplifier for a lower bits; and a capacitor array including a plurality of capacitance elements. The second switching elements have a larger on-resistance than the first switching elements. The first power-amplifier array is arranged between the second power-amplifier array and the capacitor array. | ||||||
| 196 | Apparatus and Method For Digital Beam-Forming With Low-Resolution Quantization | US14382057 | 2014-08-28 | US20150365151A1 | 2015-12-17 | Ulf GUSTAVSSON |
| An antenna arrangement configured for digital beam-forming of a transmit signal comprising; a number N>1 of digital to analog converters, DACs, each of the N DACs being arranged to receive one respective digital transmit signal component, and to convert and output an analog transmit signal component, each of the N DACs having a respective resolution below a resolution required to fulfill a regulatory radio requirement in an interchangeable antenna arrangement arranged for transmission by a single antenna element connected to a single DAC; and N antenna elements, each of the N antenna elements being configured to receive one respective analog transmit signal component and to transmit the analog transmit signal component as part of the digitally beam-formed transmit signal. | ||||||
| 197 | Randomization using an XOR scrambler in multicarrier communications | US14308934 | 2014-06-19 | US09191039B2 | 2015-11-17 | Marcos C. Tzannes; Arnon Friedmann |
| A multicarrier transceiver can have a plurality of carriers and convert a bit stream into a plurality of parallel words for QAM on the plurality of carriers, a length of one of the plurality of parallel words for QAM on the plurality of carriers, a length of one of the plurality of parallel words corresponding to a number of bits modulated on an associated carrier of the plurality of carriers for the one of the plurality of parallel words, the transceiver further including an XOR scrambler that scrambles the plurality of parallel words, a QAM encoder tha maps all or part of each scrambled word to a QAM constellation point to generate a plurality of QAM constellation points, and a transmitter that transmits the plurality of QAM constellation points using the plurality of carriers. | ||||||
| 198 | POWER AMPLIFICATION DEVICE AND TRANSMITTER | US14626712 | 2015-02-19 | US20150244324A1 | 2015-08-27 | MASAHIRO KUMAGAWA; AKINORI DAIMO; HISASHI ADACHI |
| A power amplification device includes: a first power-amplifier array including a plurality of first switching elements that constitute a class-D power amplifier for a higher bits; a second power-amplifier array including a plurality of second switching elements that constitute a class-D power amplifier for a lower bits; and a capacitor array including a plurality of capacitance elements. The second switching elements have a larger on-resistance than the first switching elements. The first power-amplifier array is arranged between the second power-amplifier array and the capacitor array. | ||||||
| 199 | Transmitter System With Reconfigurable Amplifiers | US14422625 | 2013-10-17 | US20150229282A1 | 2015-08-13 | Bernhard Kaehs; Sebastian Stempfl |
| An amplifier includes a coupler, a main amplifier, and an auxiliary amplifier. The main amplifier and the auxiliary amplifier are supplied with signals derived from at least one input signal and amplify these. The coupler combines output signals of the main amplifier and of the auxiliary amplifier. The main amplifier and/or the auxiliary amplifier comprises an operating point adjustable during operation. | ||||||
| 200 | Method and apparatus for synchronization | US13778925 | 2013-02-27 | US09106233B1 | 2015-08-11 | Eitan Rosen |
| Aspects of the disclosure provide a circuit that includes a clock synchronization circuit. The clock synchronization circuit is configured to determine a sub-cycle offset between a first clock signal and a second clock signal, and select rising/failing edges of the first clock signal and the second clock signal based on the sub-cycle offset for enabling communication between a first clock domain that is operative in response to the first clock signal and a second clock domain that is operative in response to the second clock signal. | ||||||
QQ群二维码
意见反馈
意见反馈