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1. 发明申请

US20190165821A1 SYSTEMS AND METHODS FOR OUT-OF-BAND INTERFERENCE MITIGATION 审中-公开
公开(公告)号：US20190165821A1
公开(公告)日：2019-05-30
申请号：US16262045
申请日：2019-01-30
申请人： Kumu Networks, Inc.
发明人： Jung-Il Choi , Mayank Jain
IPC分类号： H04B1/04 , H04B1/10
CPC分类号： H04B1/0475 , H04B1/10 , H04B1/1027 , H04B1/1036 , H04B1/109 , H04B2001/0491 , H04B2001/1045 , H04B2001/1072
摘要： A system for interference mitigation including a transmit coupler that samples the RF transmit signal to create a sampled RF transmit signal; a transmit analog canceller that transforms the RF transmit signal to an RF interference cancellation signal, according to a first configuration state; a first receive coupler that combines the RF interference cancellation signal and the RF receive signal to generate a composite RF receive signal; a sampling analog interference filtering system that, in order to remove interference in the transmit band, filters the sampled RF transmit signal to generate a cleaned transmit signal; a first frequency downconverter that converts the transmit signal to a BB transmit signal; a second frequency downconverter that converts the composite RF receive signal to a composite BB receive signal; and an analog-to-digital converter that converts the transmit signal to a digital transmit signal.

2. 发明申请

US20190044556A1 CIRCUIT ARRANGEMENT AND METHOD FOR GENERATING A RADIO-FREQUENCY, ANALOGUE TRANSMISSION SIGNAL USING REDUCED INTERFERENCE SIGNALS 审中-公开
公开(公告)号：US20190044556A1
公开(公告)日：2019-02-07
申请号：US16073918
申请日：2017-02-03
申请人： RHEINISCH-WESTFÄLISCHE TECHNISCHE HOCHSCHULE AACHEN
发明人： Oner Hanay
IPC分类号： H04B1/04 , H04L27/26
CPC分类号： H04B1/0475 , H04B2001/0491 , H04L27/02 , H04L27/18 , H04L27/2626 , H04L27/2628 , H04L27/34
摘要： A circuit arrangement for generating a high-frequency, analog transmission signal, in particular a high-frequency, analog single-carrier transmission signal. The circuit arrangement has a synthesis apparatus for generating the high-frequency, analog transmission signal on the basis of a discrete frequency spectrum of a digital modulated, baseband signal. A transmission device for transmitting a high-frequency, analog transmission signal. The transmission device having an antenna for transmitting the transmission signal, and a synthesis apparatus for generating the high-frequency, analog transmission signal, on a basis of a discrete frequency spectrum of a digital, modulated baseband signal. A method for transmitting a high-frequency, analog transmission signal, which is a high-frequency, analog single-carrier transmission signal. The method includes providing a discrete frequency spectrum of a modulated, digital baseband signal; generating the high-frequency, analog transmission signal on the basis of the discrete frequency spectrum; and transmitting the high-frequency, analog transmission signal by means of an antenna.

3. 发明申请

US20180262221A1 LOCAL OSCILLATOR FEEDTHROUGH SIGNAL CORRECTION APPARATUS AND METHOD, AND MICROPROCESSOR CONTROL UNIT 审中-公开
公开(公告)号：US20180262221A1
公开(公告)日：2018-09-13
申请号：US15976655
申请日：2018-05-10
申请人： Huawei Technologies Co., Ltd.
发明人： Tengteng JI , Junpeng WANG , Bin DING , Haiming FAN
IPC分类号： H04B1/04
CPC分类号： H04B1/04 , H03D7/165 , H03D2200/009 , H03F3/19 , H03F3/245 , H04B1/0475 , H04B17/13 , H04B2001/0491 , H04L25/061 , H04L27/0014 , H04L27/364 , H04L2027/0016 , H04L2027/0018 , H04L2027/0053
摘要： The present disclosure discloses a local oscillator feedthrough signal correction apparatus, including a microprocessor control unit, a first digital-to-analog converter, a second digital-to-analog converter, a mixer, a local oscillator, a signal output line, a signal splitter, and a detector tube. The signal splitter is disposed in the signal output line, and the first digital-to-analog converter and the second digital-to-analog converter are configured to provide the mixer with quadrature direct current components VI and VQ used for local oscillator feedthrough signal correction. The mixer outputs a local oscillator feedthrough signal to the signal output line. The signal splitter obtains the local oscillator feedthrough signal by means of splitting, and the detector tube detects the local oscillator feedthrough signal. When a detection value of the local oscillator feedthrough signal exceeds a preset target value, the microprocessor control unit adjusts output values of the VI and the VQ to reduce local oscillator feedthrough.

4. 发明授权

US09960940B2 Frequency shaping and adaptive rounding for O-QPSK and MSK transmission in polar coordinates 有权
公开(公告)号：US09960940B2
公开(公告)日：2018-05-01
申请号：US15255659
申请日：2016-09-02
申请人： QUALCOMM Incorporated
发明人： Koorosh Akhavan , Eunmo Kang , Rajapaksa Senaratne
IPC分类号： H04L27/20 , H04B1/04 , H04L25/03 , H04B1/00 , H04L27/12
CPC分类号： H04L27/20 , H04B1/0017 , H04B1/0475 , H04B2001/0491 , H04L25/03828 , H04L25/03834 , H04L25/03853 , H04L25/03859 , H04L27/122
摘要： Systems and methods are directed to phase modulation of polar coordinates in a transmitter of wireless signals, to achieve high transmit power levels while meeting spectral mask and EVM requirements. An input signal is mapped to a sequence of modulation frequency (e.g., O-QPSK to MSK) to generate a mapped signal. A digital frequency shaping filter is applied to the mapped signal to generate a shaped signal. An adaptive rounding algorithm is applied to the shaped signal to generate a reduced bit-width signal. A digital frequency synthesizer is applied to the reduced bit-width signal to generate an analog waveform for transmission.

5. 发明申请

US20170272230A1 POINT-TO-MULTIPOINT MICROWAVE COMMUNICATION 审中-公开
公开(公告)号：US20170272230A1
公开(公告)日：2017-09-21
申请号：US15338044
申请日：2016-10-28
申请人： Skyriver Communications, Inc.
发明人： Saeed Sarikhani Khorami
IPC分类号： H04L5/22 , H04B1/18 , H04L5/08 , H04B1/04 , H04B1/525
CPC分类号： H04L5/22 , H04B1/0458 , H04B1/18 , H04B1/40 , H04B1/525 , H04B2001/0491 , H04L5/08 , H04W4/00 , H04W84/12 , H04W88/085
摘要： A microwave communication system may include subscriber stations in communication with a base station. The stations may include time duplex circuitry normally found in wireless local area networks (WLANs). Signals normally routed through antennas associated with such circuitry instead are routed through circuitry to perform frequency conversion to and from microwave communications frequencies, for communications over microwave links between the subscriber stations and the base station. In some embodiments the wireless circuitry is configured for multiple input multiple output (MIMO) operation with one antenna port dedicated for transmission of data and one antenna port dedicated to reception of data.

6. 发明授权

US09768733B2 Multiple input single output device with vector signal and bias signal inputs 有权
公开(公告)号：US09768733B2
公开(公告)日：2017-09-19
申请号：US14267999
申请日：2014-05-02
申请人： ParkerVision, Inc.
发明人： David F. Sorrells , Gregory S. Rawlins , Michael W. Rawlins
IPC分类号： H04B1/04 , H03F1/02 , H03C5/00 , H03F1/32 , H03F3/21 , H03F3/24 , H04L27/36 , H03F3/45 , H03G3/30 , H03F3/193 , H04L27/20
CPC分类号： H03F1/0233 , H03C5/00 , H03F1/02 , H03F1/0205 , H03F1/0294 , H03F1/32 , H03F1/3205 , H03F1/3223 , H03F3/193 , H03F3/211 , H03F3/24 , H03F3/245 , H03F3/45071 , H03F2200/336 , H03F2200/387 , H03F2200/451 , H03F2201/3215 , H03G3/3042 , H04B1/04 , H04B1/0475 , H04B1/0483 , H04B2001/045 , H04B2001/0491 , H04L27/20 , H04L27/36 , H04L27/362
摘要： Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.

7. 发明申请

US20170237453A1 MODULATED SIGNAL GENERATING DEVICE AND WIRELESS DEVICE 审中-公开
公开(公告)号：US20170237453A1
公开(公告)日：2017-08-17
申请号：US15391324
申请日：2016-12-27
申请人： Kabushiki Kaisha Toshiba
发明人： Yoshimasa EGASHIRA , Keiichi YAMAGUCHI
IPC分类号： H04B1/04 , H03F3/21 , H03F1/32 , H03F3/19
CPC分类号： H04B1/04 , H03F1/32 , H03F3/19 , H03F3/211 , H03F3/2175 , H03F3/24 , H03F3/245 , H03F3/72 , H03F2200/111 , H03F2200/171 , H03F2200/451 , H03F2203/21106 , H03F2203/21142 , H03F2203/7209 , H03M1/12 , H04B1/0475 , H04B2001/0408 , H04B2001/0491
摘要： A modulated signal generating device for modulating includes a first amplifier that generates a first amplified signal based on a first control signal; a second amplifier that has a smaller amplification factor as compared to the first amplifier and that generates a second amplified signal based on a second control signal; a combiner that combines the first amplified signal and the second amplified signal and generates a modulated signal; a first control unit that generates the first control signal based on a first component signal included in a input signal; a first filter that eliminates the harmonic component included in a first difference signal, which represents the difference between the input signal and the first component signal, and generates a first filtered signal; and a second control unit that generates the second control signal based on a second component signal included in the first filtered signal.

8. 发明授权

US09705571B2 Method and apparatus for use with a radio distributed antenna system 有权
公开(公告)号：US09705571B2
公开(公告)日：2017-07-11
申请号：US15179396
申请日：2016-06-10
申请人： AT&T INTELLECTUAL PROPERTY I, LP
发明人： Irwin Gerszberg , Paul Shala Henry , Robert Bennett , Farhad Barzegar , Donald J Barnickel , Thomas M. Willis, III
IPC分类号： H04W72/04 , H04B7/022 , H04B1/04 , H04L5/00 , H04W84/04
CPC分类号： H04B7/022 , H04B1/04 , H04B3/54 , H04B2001/0491 , H04L5/003 , H04L5/0048 , H04W72/0453 , H04W84/042
摘要： Aspects of the subject disclosure may include, for example, receiving, by a network element of a distributed antenna system, a reference signal and a first modulated signal at a first carrier frequency, the first modulated signal including first communications data provided by a base station and directed to a mobile communication device. The element converts the first modulated signal at the first carrier frequency to the first modulated signal in a first spectral segment based on an analog signal processing of the first modulated signal and utilizing the reference signal to reduce distortion during the converting. The network element wirelessly transmits the first modulated signal at the first spectral segment to the mobile communication device. Other embodiments are disclosed.

9. 发明申请

US20160308579A1 EQUALIZATION PROCESSING CIRCUIT, DIGITAL RECEIVER, SIGNAL TRANSMITTING/RECEIVING SYSTEM, EQUALIZATION PROCESSING METHOD, AND DIGITAL RECEIVING METHOD 审中-公开
标题翻译：均衡处理电路，数字接收机，信号发送/接收系统，均衡处理方法和数字接收方法
公开(公告)号：US20160308579A1
公开(公告)日：2016-10-20
申请号：US15101995
申请日：2014-11-19
申请人： NEC CORPORATION
发明人： Junichi ABE
IPC分类号： H04B3/06 , H04B1/04
CPC分类号： H04B3/06 , H04B1/0475 , H04B10/2507 , H04B10/616 , H04B2001/0491
摘要： It is made possible to compensate for a waveform distortion having semi-fixed characteristics and a waveform distortion varying at high speed with a high degree of accuracy.An equalization processing circuit according to an exemplary aspect of the present invention includes frequency domain equalization means for performing a frequency domain equalization on a digital signal using an inputted frequency domain equalization coefficient; time domain equalization means for performing a time domain equalization on a digital signal using an inputted time domain equalization coefficient; waveform distortion detection means for detecting a dynamic waveform distortion and a quasi-static waveform distortion of an equalized digital signal on which the equalization to be performed; frequency domain equalization coefficient control means for calculating a frequency domain equalization coefficient based on a quasi-static waveform distortion; and time domain equalization coefficient control means for calculating a time domain equalization coefficient based on a dynamic waveform distortion.
摘要翻译：根据本发明的示例性方面的均衡处理电路包括频域均衡装置，用于使用输入的频域均衡系数对数字信号进行频域均衡; 时域均衡装置，用于使用输入的时域均衡系数对数字信号执行时域均衡; 波形失真检测装置，用于检测要执行均衡的均衡数字信号的动态波形失真和准静态波形失真; 频域均衡系数控制装置，用于基于准静态波形失真来计算频域均衡系数; 以及用于基于动态波形失真来计算时域均衡系数的时域均衡系数控制装置。

10. 发明申请

US20160277049A1 TRANSMITTER FOR CARRIER AGGREGATION 审中-公开
标题翻译：发射机用于携带者聚集
公开(公告)号：US20160277049A1
公开(公告)日：2016-09-22
申请号：US15074881
申请日：2016-03-18
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Dong Woo KANG , Cheon Soo KIM , Jang Hong CHOI
IPC分类号： H04B1/04 , H04W72/04
CPC分类号： H04B1/0483 , H04B1/0053 , H04B2001/0491
摘要： Provided is a transmitter. The transmitter includes a signal combiner configured to amplify a first differential radio frequency (RF) signal modulated to be transmitted through a first frequency band and a second differential RF signal modulated to be transmitted through a second frequency band non-adjacent to the first frequency band and summate the amplified first differential RF signal and the amplified second differential RF signal in a current mode to generate an RF signal and a power amplifier configured to amplify the generated RF signal.
摘要翻译：提供一个发射机。发射机包括信号组合器，其被配置为放大被调制为经由第一频带传输的第一差分射频（RF）信号和被调制以通过与第一频带不相邻的第二频带传输的第二差分RF信号并且在当前模式下将放大的第一差分RF信号和放大的第二差分RF信号相加以产生RF信号，以及配置成放大所产生的RF信号的功率放大器。

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