公开(公告)号：US20180083689A1

公开(公告)日：2018-03-22

申请号：US15566802

申请日：2016-04-20

申请人： NEC Corporation

发明人： Naoki OSHIMA ,  Ikuma ANDO

IPC分类号： H04B7/08 ,  H04L7/00

CPC分类号： H04B7/082 ,  H04B7/0828 ,  H04B7/10 ,  H04L7/0087

摘要： When a radio frequency (RF) unit is provided with a delay line or a switch, as the number of arrays (the number of antennas) increases, the parasitic capacitance of the antennas increases and the insertion loss of the switch increases. In addition, the insertion loss may further increase at high frequencies expected to be used in the future. An array antenna apparatus of the present invention is provided with: a plurality of antennas that receive signals; a plurality of down-converters that are connected respectively to the plurality of antennas and that down-convert the received signals; and a switch that selects at least one signal from among the plurality of down-converted signals, and transmits the at least one signal to an A/D converter.

公开(公告)号：US20170280293A1

公开(公告)日：2017-09-28

申请号：US15472881

申请日：2017-03-29

申请人： Corning Optical Communications Wireless Ltd

发明人： Parwiz Shekalim

IPC分类号： H04W4/02 ,  H04W4/06 ,  H04B10/2575 ,  H04W8/00

CPC分类号： H04W4/023 ,  H04B7/024 ,  H04B7/0828 ,  H04B7/15507 ,  H04B10/25753 ,  H04W4/025 ,  H04W4/06 ,  H04W8/005 ,  H04W8/26 ,  H04W16/02 ,  H04W16/26 ,  H04W64/003 ,  H04W88/085

摘要： Embodiments of the disclosure relate to identifying remote units in a wireless distribution system (WDS) based on assigned unique temporal delay patterns. The WDS includes a plurality of remote units configured to communicate communications signals in signal paths. Each of the signal paths is assigned a unique temporal delay pattern. The communications signals are digitally delayed by respective delay elements based on the plurality of unique temporal delay patterns to provide delayed communications signals. A remote unit identification system analyzes a delayed communications signal to determine a respective temporal delay pattern associated within the delayed communication signal. By uniquely identifying a remote unit from which a delayed communication signal is communicated, it is possible to determine the locations client devices in the WDS, thus enabling a variety of location-based services and optimizations in the WDS.

公开(公告)号：US07539275B2

公开(公告)日：2009-05-26

申请号：US11379486

申请日：2006-04-20

申请人： Gary A. Ray

发明人： Gary A. Ray

IPC分类号： H04B1/10 ,  H04B17/02

CPC分类号： H04L1/02 ,  H04B7/0817 ,  H04B7/0828 ,  H04B7/0874

摘要： A specially constructed analog processing block ahead of the traditional ADC within a typical RF front-end involving an antenna, filter, LNA, and AGC is provided. This analog block includes a structured matrix of controllable analog delay elements together with analog summers. The analog block can be used to form spectral estimates, narrow band filters, DS-SS detection, and more. The structured matrix can be programmed in order to implement SIGINT applications involving detection and characterization of communication signals.

摘要翻译： 提供了一个特定的模拟处理模块，位于传统ADC之前的典型RF前端，包括天线，滤波器，LNA和AGC。 该模拟块包括可控模拟延迟元件以及模拟加法器的结构化矩阵。 模拟块可用于形成频谱估计，窄带滤波器，DS-SS检测等。 可以对结构化矩阵进行编程，以实现涉及通信信号的检测和表征的SIGINT应用。

公开(公告)号：US06459725B1

公开(公告)日：2002-10-01

申请号：US09126694

申请日：1998-07-31

申请人： Kenneth R. Baker ,  Richard Dean

发明人： Kenneth R. Baker ,  Richard Dean

IPC分类号： H03K1100

CPC分类号： H04B7/155 ,  H04B7/0613 ,  H04B7/0822 ,  H04B7/0828 ,  H04B7/2606

摘要： The invention includes methods and systems for use in a wireless communications system, such as a CDMA mobile communications system. A communications device transmits a wireless signal. A repeater system receives a first version of the wireless signal using a first receiver system and receives a second version of the wireless signal using a second receiver system. The repeater system switches between the first version of the wireless signal and the second version of the wireless signal to generate a third version of the wireless signal. The repeater system transmits the third version of the wireless signal and a base station system receives the third version of the wireless signal. In some embodiments of the invention, the wireless signals are Code Division Multiple Access (CDMA) signals. In some embodiments of the invention, the switching occurs at a rate of 4 MHz.

摘要翻译： 本发明包括用于诸如CDMA移动通信系统的无线通信系统中的方法和系统。 通信设备发送无线信号。 中继器系统使用第一接收机系统接收第一版本的无线信号，并使用第二接收机系统接收无线信号的第二版本。 中继器系统在无线信号的第一版本和无线信号的第二版本之间切换以产生无线信号的第三版本。 中继器系统发送无线信号的第三版本，并且基站系统接收无线信号的第三版本。 在本发明的一些实施例中，无线信号是码分多址（CDMA）信号。 在本发明的一些实施例中，切换以4MHz的速率发生。

公开(公告)号：US5905767A

公开(公告)日：1999-05-18

申请号：US742136

申请日：1996-10-31

申请人： Akinori Fujimura

发明人： Akinori Fujimura

IPC分类号： H04B7/08 ,  H04L1/02 ,  H04L1/06 ,  H04L7/00 ,  H04L7/033 ,  H04L7/04 ,  H04L7/10 ,  H04L27/22

CPC分类号： H04B7/0894 ,  H04B7/0817 ,  H04B7/0848 ,  H04L1/06 ,  H04L27/22 ,  H04L7/0334 ,  H04B7/0828 ,  H04L7/04

摘要： The timing recovery apparatus and the diversity communication apparatus using the same realizes a high-speed timing phase pull-in characteristic and a low-jitter characteristic at the time of power-on sequence, recovery from line disconnection and the like. The apparatuses also prevent the bit error rate characteristic and synchronization characteristic from being deteriorated by signal delay time difference. A received PSK signal is X-times oversampled. From received phase data sequences Y.sub.i obtained by the X-times oversampling, a data sequence including j symbol frequency components not affected by carrier frequency deviation is extracted by signal processing including simple adding and subtracting operations. The data sequence including j symbol frequency components is synthesized to provide two data sequences including symbol frequency components having a good S/N ratio with .pi./4 phase difference in radian and not affected by carrier frequency deviation. Further, a data sequence including two symbol frequency components is used for timing regeneration.

公开(公告)号：US5787122A

公开(公告)日：1998-07-28

申请号：US640059

申请日：1996-04-30

申请人： Mitsuhiro Suzuki

发明人： Mitsuhiro Suzuki

IPC分类号： H04B7/02 ,  H04B1/06 ,  H04B7/06 ,  H04B7/08

CPC分类号： H04B7/0894 ,  H04B7/0606 ,  H04B7/0671 ,  H04B7/0822 ,  H04B7/0828

摘要： A simplified transmission-system and reception-system including a radio transmitter and radio receiver. A radio transmitter includes an encoding portion (22) for generating an encoded bit signal from transmission bit data, an interleave means (23) for interleaving an encoded output over a plurality of burst signals, a modulator (24) for modulating interleaved burst signals, and an antenna switcher (26) for switching modulated signals for each of the burst signals, and transmitting a switched modulated signal from a plurality of antennas (27a) (27n). A radio receiver includes a switch (72) for sequentially selecting reception signals received at a plurality of antennas (71a) (71m) for each of the burst signals, a demodulator (74) for demodulating a received signal of a selected antenna, a deinterleave portion (75) for deinterleaving a demodulated signal over a plurality of burst signals, and a decoding means (76) for generating an output signal for estimating transmission information by synthesizing signals dispersed into a plurality of symbols.

摘要翻译： 包括无线电发射机和无线电接收机的简化的传输系统和接收系统。 无线电发射机包括用于从传输比特数据生成编码比特信号的编码部分（22），用于在多个突发信号上交织编码输出的交织装置（23），用于调制交错突发信号的调制器（24） 以及用于切换每个突发信号的调制信号并从多个天线（27a）（27n）传送切换的调制信号的天线切换器（26）。 一种无线电接收机包括用于顺序选择针对每个突发信号的多个天线（71a）（71m）接收的接收信号的开关（72），用于解调所选天线的接收信号的解调器（74），解交织 用于通过多个突发信号解交织解调信号的部分（75）和用于通过合成分散到多个符号中的信号来产生用于估计传输信息的输出信号的解码装置（76）。

公开(公告)号：US20230396297A1

公开(公告)日：2023-12-07

申请号：US18235692

申请日：2023-08-18

申请人： Mitsubishi Electric Corporation

发明人： Kazuaki ISHIOKA

IPC分类号： H04B7/06 ,  H04B7/08

CPC分类号： H04B7/0617 ,  H04B7/0828

摘要： A base station as a wireless communication device that performs multicarrier transmission with a plurality of terminals includes: a plurality of on-chip array antennas that transmits a constant envelope modulated signal; and a control device that controls directions and bandwidths of beams of the plurality of on-chip array antennas and allocates the on-chip array antennas that transmit and receive signals to and from the terminals.

公开(公告)号：US20230291459A1

公开(公告)日：2023-09-14

申请号：US18319250

申请日：2023-05-17

申请人： Apple Inc.

发明人： Yushu Zhang ,  Dawei Zhang ,  Haitong Sun ,  Wei Zeng ,  Hong He ,  Yuchul Kim ,  Chunhai Yao ,  Haijing Hu

IPC分类号： H04B7/08 ,  H04L5/00 ,  H04W72/23

CPC分类号： H04B7/0828 ,  H04L5/0048 ,  H04W72/23

摘要： Apparatuses, systems, and methods for performing downlink signal reception with antenna panel switching in a wireless communication system. A cellular base station may receive an indication of an antenna panel activation delay from a wireless device. The cellular base station may select a scheduling offset for a transmission to the wireless device based at least in part on the antenna panel activation delay. The scheduling offset may be selected to be at least the length of the antenna panel activation delay if it is expected that the wireless device may perform antenna panel activation to receive the transmission. The cellular base station may schedule the transmission to the wireless device using the selected scheduling offset, and may perform the transmission to the wireless device at the selected scheduling offset after scheduling the transmission to the wireless device.

公开(公告)号：US20180115340A1

公开(公告)日：2018-04-26

申请号：US15443665

申请日：2017-02-27

申请人： SK hynix Inc.

发明人： Dae Han KWON

IPC分类号： H04B1/401 ,  H04B7/08 ,  H04B17/364 ,  H03K3/356 ,  H04L25/03

CPC分类号： H04B1/401 ,  H03F3/245 ,  H03F3/45183 ,  H03F3/45475 ,  H03F2200/405 ,  H03K3/356034 ,  H03K2005/00013 ,  H03K2005/00156 ,  H04B7/0828 ,  H04B17/364 ,  H04L25/03343

摘要： A receiving device may include a buffer, a summer circuit, a first delay cell, and a second delay cell. The buffer may receive an external signal. The summer circuit may sum an output of the buffer, a first feedback signal, and a second feedback signal. The first delay cell may generate the first feedback signal by delaying an output of the summer circuit. The second delay cell may generate the second feedback signal by delaying the first feedback signal. The delay amounts of the first and second delay cells may be set based on a delay control voltage.

公开(公告)号：US20070047659A1

公开(公告)日：2007-03-01

申请号：US11216200

申请日：2005-08-31

申请人： Milivoje Aleksic

发明人： Milivoje Aleksic

IPC分类号： H04N11/02

CPC分类号： H04B7/12 ,  H04B7/0619 ,  H04B7/0828 ,  H04B7/0837 ,  H04B7/084 ,  H04N19/40

摘要： A method and apparatus for communicating compressed video information includes storing video information compressed based on a first compression method, such as a method with a high compression ratio, and transcoding the compressed video information to produce corresponding recompressed video information that is based on a second compression method, with a lower compression ratio such as standard JPEG compression or other suitable compression. The method and apparatus, if desired, may include sending the recompressed video information for a destination apparatus which may then suitably decompress the video information using a standard decompression technique. For example, storing the compressed image in a high compressed format, for example, in a piecewise basis may be done online while the camera, for example, is in use so that the image is properly captured and then, transcoding the compressed image to a different level of compression while the camera is offline.

摘要翻译： 用于传送压缩视频信息的方法和装置包括存储基于诸如具有高压缩比的方法的第一压缩方法压缩的视频信息，以及对压缩视频信息进行代码转换以产生基于第二压缩的对应的再压缩视频信息 方法，具有较低的压缩比，例如标准JPEG压缩或其他合适的压缩。 如果需要，该方法和装置可以包括发送用于目的地装置的再压缩视频信息，然后可以使用标准解压缩技术来适当地解压缩视频信息。 例如，例如在压缩格式中，例如分段存储压缩图像可以在例如摄像机正在使用中进行在线，以使图像被适当地捕获，然后将压缩图像转码为 相机脱机时，不同的压缩级别。