公开(公告)号：US11496179B1

公开(公告)日：2022-11-08

申请号：US17380762

申请日：2021-07-20

申请人： Rockwell Collins, Inc.

发明人： Carlos J. Chavez

IPC分类号： H04B1/04 ,  H04B1/68 ,  H04L27/12 ,  H04B1/707

摘要： A receiver system for demodulating a high-entropy continuous phase modulation (HE-CPM) signal is disclosed. A plurality of complex multipliers is configured to receive the synchronized HE-CPM signal. Each of the complex multipliers removes a phase associated with a respective one of a plurality of inter-symbol interference (ISI) hypotheses and generates a respective one of a plurality of complex multiplier outputs. Each ISI hypothesis includes a previous chip hypothesis corresponding to a binary value for a previous chip, and a next chip hypothesis corresponding to a binary value for a next chip. A summer is configured to combine real parts of the plurality of complex multiplier outputs to generate a soft decision for a current chip of the HE-CPM signal.

公开(公告)号：US09820085B1

公开(公告)日：2017-11-14

申请号：US15200662

申请日：2016-07-01

申请人： QUALCOMM Incorporated

发明人： Mahesh Devdatta Telang ,  Rakesh Maramreddy ,  Madhusudan Kinthada Venkata ,  Bhavik Shah

IPC分类号： H04B7/00 ,  H04W4/00 ,  H04W76/02 ,  H04W8/00 ,  H04B1/68 ,  H04W88/02

CPC分类号： H04W4/80 ,  H04W8/005 ,  H04W8/20 ,  H04W12/04 ,  H04W76/14 ,  H04W88/02

摘要： The present disclosure provides techniques for assigning virtual international mobile subscriber identity (VIMSI) to the peripheral device associated with the user equipment (UE) based in part on the mobile device identification (ID) of the UE itself. As such, peripheral devices that are configured with dual radios (e.g., short range communication chips and cellular radio) do not require a separate subscriber information module (SIM) chip to establish cellular connectivity independent of the UE. Moreover, because the peripheral device is allocated a VIMSI based on the mobile ID of the UE, the peripheral devices also achieve an advantage of maintaining the same phone number as the UE.

公开(公告)号：US09407317B2

公开(公告)日：2016-08-02

申请号：US13856419

申请日：2013-04-03

申请人： UMM AL-QURA UNIVERSITY

发明人： Mohamed Khalaf-Allah

IPC分类号： H04B1/68 ,  G01S5/02 ,  H04B1/69

CPC分类号： H04B1/69 ,  G01S5/021 ,  G01S5/0215

摘要： The differential ultra-wideband indoor positioning method provides differential positioning to increase the accuracy of ultra-wideband (UWB) based indoor position estimation. Knowledge about common errors can be learned by employment of a reference source, where the difference between its known and estimated position (differential operation in solution domain), or the difference between the known and measured ranges (differential operation in measurement domain), provides invaluable information to be utilized in reducing errors in estimating the position of the target source. Differential operation accuracy reaches far beyond the accuracy of the non-differential setting.

摘要翻译： 差分超宽带室内定位方法提供差分定位，以提高基于超宽带（UWB）的室内位置估计的精度。 通过使用参考源（其中已知和估计位置之间的差异（溶液域中的差分运算）或已知和测量范围之间的差异（测量域中的差分运算））之间的差异提供了宝贵的价值，可以了解常见错误的知识 用于在估计目标源的位置时减少误差的信息。 差分运算精度远远超出了非差分设定的精度。

公开(公告)号：US20160191110A1

公开(公告)日：2016-06-30

申请号：US14795135

申请日：2015-07-09

申请人： TEXAN INSTRUMENTS INCORPORATED

发明人： LIRAN BRECHER ,  SHAI EREZ

IPC分类号： H04B1/68 ,  H04B1/04 ,  H04B17/13

CPC分类号： H04L27/2623 ,  H04B17/13 ,  H04L27/2614 ,  H04L27/3411

摘要： A method includes processing an input sequence of samples of an orthogonal frequency division multiplexing signal (OFDM) to reduce aeak to average power ratio (PAPR) of the OFDM signal with given constraints of an error vector magnitude (EVM) parameter and a spectral mask parameter for the OFDM signal during a first processing iteration. The method includes performing at least one other iteration of the first processing iteration on a subsequent time domain sequence generated in the first processing iteration to reduce the PAPR of the OFDM signal below a system target PAPR threshold and below threshold limits for the EVM parameter and the spectral mask parameter.

摘要翻译： 一种方法包括处理正交频分多路复用信号（OFDM）的输入序列的输入序列，以减少具有误差向量幅度（EVM）参数和频谱掩模参数的给定约束的OFDM信号的平均功率比（PAPR） 用于在第一次处理迭代期间的OFDM信号。 该方法包括对在第一处理迭代中生成的后续时域序列执行第一处理迭代的至少一个其它迭代，以将OFDM信号的PAPR降低到系统目标PAPR阈值以下并且低于EVM参数的阈值限度，并且 光谱掩模参数。

公开(公告)号：US09166653B2

公开(公告)日：2015-10-20

申请号：US14134584

申请日：2013-12-19

申请人： Chetan Verma

发明人： Chetan Verma

IPC分类号： H04B7/00 ,  H04B5/00 ,  G06F3/0488 ,  H04B1/68

CPC分类号： H04B5/0031 ,  G06F1/1694 ,  G06F1/1698 ,  G06F1/3215 ,  G06F1/3228 ,  G06F3/017 ,  Y02D70/00 ,  Y02D70/144 ,  Y02D70/166 ,  Y02D70/26 ,  Y02D70/42

摘要： This disclosure describes systems, methods, and computer-readable media related to near field communication (NFC) sensors with power sleep mode. In some embodiments, one or more motions of a user device may be detected. The one or more motions may be analyzed to identify a pre-defined motion of a user device. A wireless sensor of the user device may be enabled in response to the identified pre-defined motion. A wireless sensor-enabled device may be determined to be within a pre-determined distance. Data may be exchanged with the wireless sensor-enabled device. The wireless sensor may be disabled upon completion of the data exchange.

摘要翻译： 本公开描述了与具有功率睡眠模式的近场通信（NFC）传感器相关的系统，方法和计算机可读介质。 在一些实施例中，可以检测用户设备的一个或多个运动。 可以分析一个或多个运动以识别用户设备的预定义运动。 可以响应于所识别的预定义运动来启用用户设备的无线传感器。 可以将无线传感器启用的设备确定为在预定距离内。 可以与启用无线传感器的设备交换数据。 完成数据交换后，无线传感器可能被禁用。

公开(公告)号：US20140295773A1

公开(公告)日：2014-10-02

申请号：US14243163

申请日：2014-04-02

申请人： AIRBUS OPERATIONS GMBH

发明人： Georg BÖCK ,  Alexander KRAVETS ,  Heiko TRUSCH

IPC分类号： H04W52/02 ,  H04B1/68

CPC分类号： H04W52/0235 ,  H03C1/60 ,  H04B1/68 ,  H04B10/5165 ,  H04W52/0229 ,  Y02D70/40

摘要： The present disclosure pertains to a transmitter for waking up electronic systems with a first signal generator which is designed to generate a carrier signal with a first frequency, a second signal generator which is designed to generate an informational signal with a second frequency, a single-sideband modulator which is designed to modulate the information signal by the carrier signal, and a transmission device which is designed to emit the generated carrier signal and the modulated information signal. The present disclosure also pertains to a receiver, an aircraft and spacecraft and a method.

摘要翻译： 本公开涉及一种用于利用被设计为产生具有第一频率的载波信号的第一信号发生器唤醒电子系统的发射机，被设计为产生具有第二频率的信息信号的第二信号发生器， 边带调制器，其被设计成通过载波信号来调制信息信号;以及发送装置，被设计为发射所生成的载波信号和调制信息信号。 本公开还涉及一种接收机，飞机和航天器以及一种方法。

公开(公告)号：US08344818B1

公开(公告)日：2013-01-01

申请号：US11818813

申请日：2007-06-15

申请人： Doron Gamliel

发明人： Doron Gamliel

IPC分类号： H03C1/60 ,  H04B1/68

CPC分类号： H03L7/185 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/165 ,  H03L2207/10

摘要： A single sideband mixer is constructed with digital logic elements such as T-type flip-flops and inverters and with FETs, and the resulting mixer circuit simultaneously improves control over the frequency resolution, noise floor and operating frequency range. The use of this group of elements also allows the mixer circuit to be easily realized in an integrated circuit.

摘要翻译： 单个边带混频器由诸如T型触发器和反相器以及FET之类的数字逻辑元件构成，所产生的混频器电路同时改善了对频率分辨率，本底噪声和工作频率范围的控制。 使用这一组元件也允许在集成电路中容易地实现混频器电路。

公开(公告)号：US20100035550A1

公开(公告)日：2010-02-11

申请号：US12449078

申请日：2007-06-20

申请人： Wen Gao ,  Hou-Shin Chen

发明人： Wen Gao ,  Hou-Shin Chen

IPC分类号： H04B17/00 ,  H04B1/68

CPC分类号： H04L7/042 ,  H04L7/06 ,  H04N5/50 ,  H04N21/4383

摘要： A Wireless Regional Area Network (WRAN) receiver comprises a transceiver for communicating with a wireless network over one of a number of channels, and an Advanced Television Systems Committee (ATSC) signal detector for use in forming a supported channel list comprising those ones of the number of channels upon which an ATSC signal was not detected. The ATSC signal detector comprises a matched filter that matches to at least a modulated version of an ATSC field sync signal for detecting the presence of an incumbent ATSC broadcast signal.

摘要翻译： 无线区域网络（WRAN）接收机包括用于通过多个信道之一与无线网络进行通信的收发机，以及用于形成支持的频道列表的高级电视系统委员会（ATSC）信号检测器，其包括 没有检测到ATSC信号的通道数。 ATSC信号检测器包括与ATSC场同步信号的至少调制版本匹配的匹配滤波器，用于检测在线ATSC广播信号的存在。

公开(公告)号：US07558549B2

公开(公告)日：2009-07-07

申请号：US10884646

申请日：2004-07-02

申请人： Hoang Huy Nhu

发明人： Hoang Huy Nhu

IPC分类号： H04B1/68

CPC分类号： H04B1/1661

摘要： Aspects of the method and system for rejecting single sided leakage into an amplitude modulated channel may comprise an AM demodulator for demodulating a received composite broadcast signal's control channel to generate an amplitude modulated (AM) component. A PM demodulator may demodulate a received composite broadcast signal's control channel to generate a phase modulated (PM) component. At least one subtractor may subtract an AM leakage component and a PM leakage component contributed by the single sided leakage in the received composite broadcast signal's control channel. The system may comprise at least one of each of AM and PM bandpass filters and envelope detectors that filter and detect envelopes of the AM and PM components at 982.5 Hz and 922.5 Hz.

摘要翻译： 用于拒绝单边泄漏到幅度调制信道中的方法和系统的方面可以包括用于解调接收的复合广播信号的控制信道以产生调幅（AM）分量的AM解调器。 PM解调器可以解调所接收的复合广播信号的控制信道以产生相位调制（PM）分量。 至少一个减法器可以在接收到的复合广播信号的控制信道中减去由单侧泄漏贡献的AM泄漏分量和PM泄漏分量。 该系统可以包括AM和PM带通滤波器和包络检测器中的至少一个，其在982.5Hz和922.5Hz处对AM和PM分量的包络进行滤波和检测。

公开(公告)号：US20090017780A1

公开(公告)日：2009-01-15

申请号：US12212456

申请日：2008-09-17

申请人： Mark Dale ,  William H. Thesling

发明人： Mark Dale ,  William H. Thesling

IPC分类号： H04B1/68

CPC分类号： H04B1/68 ,  H03B21/02

摘要： In a communication device, the LO leakage and opposite side band signals are measured at an output signal. Input processing signals to a modulator are adjusted in response to the measured values to minimize the LO leakage and maximize side band suppression.

摘要翻译： 在通信装置中，在输出信号处测量LO泄漏和相对的边带信号。 响应于测量值调整到调制器的输入处理信号以最小化LO泄漏并最大化边带抑制。