公开(公告)号：US09960939B1

公开(公告)日：2018-05-01

申请号：US15590833

申请日：2017-05-09

Applicant: Beken Corporation

Inventor： Yiming Huang ,  Weifeng Wang

IPC: H04L7/033 ,  H04L27/12 ,  H04L27/20 ,  H04B1/04

CPC classification number: H04L27/12 ,  H04B2001/0408 ,  H04L7/0331 ,  H04L27/2017

Abstract: Embodiments discloses a transmitter for transmitting a Bluetooth packet in an enhanced data rate format. The Bluetooth packet includes a GFSK modulated segment, a Guard segment and a DPSK modulated segment. The transmitter comprises a first multiplexer configured to select a phase signal from a Guard phase signal, a received GFSK phase signal and a received DPSK phase signal based on time; a second multiplexer configured to select a amplitude signal from a Guard amplitude signal, a received GFSK amplitude signal and a received DPSK amplitude signal based on time, a phase to frequency converter communicatively coupled to the first multiplexer and configured to convert the selected phase signal into converted frequency signal. The transmitter further comprises a phase lock loop, a digital to analog converter and a power amplifier.

公开(公告)号：US20180048499A1

公开(公告)日：2018-02-15

申请号：US15237137

申请日：2016-08-15

Applicant: Silicon Laboratories, Inc.

Inventor： Hendricus de Ruijter

IPC: H04L27/00 ,  H04W8/00 ,  H04W74/00

CPC classification number: H04L27/0008 ,  H04L27/0012 ,  H04L27/2017 ,  H04L27/2082 ,  H04W8/005 ,  H04W74/002 ,  H04W84/18

Abstract: A system for automatically detecting the PHY mode based on the incoming preamble is disclosed. The system includes a multimode demodulator, which includes a preamble detector and a demodulator. The preamble detector is used to determine when the preamble has been received and the PHY mode being used by the sending node. An indication of the PHY mode is supplied to the demodulator, which then decides the incoming bit stream in accordance with the detected PHY mode. In some embodiments, one demodulator, capable of decoding the bit stream in accordance with a plurality of PHY modes is employed. In other embodiments, the system includes a plurality of demodulators, where each is dedicated to one PHY mode.

公开(公告)号：US09729308B2

公开(公告)日：2017-08-08

申请号：US15385614

申请日：2016-12-20

Applicant: Topcon Positioning Systems, Inc.

Inventor： Mark I. Zhodzishsky ,  Victor A. Prasolov ,  Dmitry M. Zhodzishsky

IPC: H04L7/033 ,  H03L7/08 ,  H04L27/20 ,  H03L7/085

CPC classification number: H04L7/0331 ,  G01S19/13 ,  H03L7/08 ,  H03L7/085 ,  H04L7/0332 ,  H04L27/2017

Abstract: A digital system of measuring parameters of the signal (phase, frequency and frequency derivative) received in additive mixture with Gaussian noise. The system is based on the use of variables of a PLL for calculating preliminary estimates of parameters and calculating the corrections for these estimates when there is a spurt frequency caused by a receiver motion with a jerk. A jerk is determined if the low pass filtered signal of the discriminator exceeds a certain threshold. The jerk-correction decreases the dynamic errors. Another embodiment includes a tracking filter for obtaining preliminary estimates of parameters to reduce the fluctuation errors. Estimates are taken from the tracking filter when there is no jerk and from the block of jerk-corrections when there is a jerk.

公开(公告)号：US09712346B2

公开(公告)日：2017-07-18

申请号：US14789731

申请日：2015-07-01

Applicant: THALES

Inventor： François Baptiste ,  Adrien Le Naour ,  Alban Denicourt ,  Célien Vincent ,  Valentin Felix

IPC: H04L25/03 ,  H04L27/20 ,  H04B1/10 ,  H04L27/22

CPC classification number: H04L25/03057 ,  H04B1/1027 ,  H04L25/03343 ,  H04L27/2017 ,  H04L27/22 ,  H04L2025/03407

Abstract: A continuous phase modulation method comprises the following steps: receiving a sequence of digital data symbols a(n) to be emitted; transforming the sequence of symbols a(n) to be emitted into a transformed sequence of symbols b(n), each symbol b(n) of which is equal to the sum of a symbol a(n) to be emitted and of a corrective factor equal to a transformation Tf applied to a plurality of differences (a(n)-a(n−1)) between two consecutive symbols to be emitted, the transformation Tf applied being a combination c of at least two differences between two consecutive symbols of the sequence to be emitted, transformed by the application of a non-linear function f; filtering the sequence of transformed symbols b(n) with a shaping filter and modulating the filtered sequence with a phase modulator; said transformation Tf being defined so as to minimize interference between modulated symbols filtered by a receiving filter.

公开(公告)号：US20170104579A1

公开(公告)日：2017-04-13

申请号：US15385614

申请日：2016-12-20

Applicant: Topcon Positioning Systems, Inc.

Inventor： Mark I. Zhodzishsky ,  Victor A. Prasolov ,  Dmitry M. Zhodzishsky

IPC: H04L7/033 ,  H04L27/20

CPC classification number: H04L7/0331 ,  G01S19/13 ,  H03L7/08 ,  H03L7/085 ,  H04L7/0332 ,  H04L27/2017

Abstract: A digital system of measuring parameters of the signal (phase, frequency and frequency derivative) received in additive mixture with Gaussian noise. The system is based on the use of variables of a PLL for calculating preliminary estimates of parameters and calculating the corrections for these estimates when there is a spurt frequency caused by a receiver motion with a jerk. A jerk is determined if the low pass filtered signal of the discriminator exceeds a certain threshold. The jerk-correction decreases the dynamic errors. Another embodiment includes a tracking filter for obtaining preliminary estimates of parameters to reduce the fluctuation errors. Estimates are taken from the tracking filter when there is no jerk and from the block of jerk-corrections when there is a jerk.

公开(公告)号：US09571314B1

公开(公告)日：2017-02-14

申请号：US14863418

申请日：2015-09-23

Applicant: QUALCOMM Incorporated

Inventor： Yu-Han Yang ,  RaviKiran Gopalan ,  Markos Troulis ,  Seyed Mohammad Ehsan Hosseini

IPC: H04B1/7093 ,  H04L27/14 ,  H04L27/12 ,  H04L27/38

CPC classification number: H04L27/14 ,  H04L27/12 ,  H04L27/2017 ,  H04L27/3872

Abstract: A method for wireless communication is described. The method includes receiving a signal that is pattern-mapped and Gaussian frequency-shift keying (GFSK) modulated. The method also includes performing a joint demapping and demodulation of the received signal based on a stored accumulated phase. The method may further include updating the stored accumulated phase based on the joint demapping and demodulation.

Abstract translation: 描述了一种用于无线通信的方法。 该方法包括接收模式映射和高斯频移键控（GFSK）调制的信号。 该方法还包括基于存储的累积相位执行对接收信号的联合解映射和解调。 该方法还可以包括基于联合解映射和解调来更新存储的累积相位。

公开(公告)号：US20160050061A1

公开(公告)日：2016-02-18

申请号：US14924619

申请日：2015-10-27

Applicant: Kamilo Feher

Inventor： Kamilo Feher

IPC: H04L5/14 ,  H04L1/00 ,  H04B7/26

CPC classification number: H04L27/2602 ,  A61B5/0015 ,  A61B5/0022 ,  A61B5/01 ,  A61B5/024 ,  A61B5/14532 ,  G06F19/00 ,  G16H10/60 ,  G16H15/00 ,  H04B1/1036 ,  H04B1/69 ,  H04B1/707 ,  H04B1/709 ,  H04B7/04 ,  H04B7/18504 ,  H04B7/2628 ,  H04B2201/70715 ,  H04B2201/70716 ,  H04J11/00 ,  H04L1/0003 ,  H04L5/0007 ,  H04L5/1453 ,  H04L27/2017 ,  H04L27/2071 ,  H04L27/2627 ,  H04L27/2649 ,  H04M7/006 ,  H04W4/023 ,  H04W4/025 ,  H04W4/90 ,  H04W12/06 ,  H04W64/00 ,  H04W88/02 ,  H04W88/06 ,  Y02A90/26

Abstract: Receiving and demodulating in a mobile device Orthogonal Frequency Division Multiplexed (OFDM) modulated signal into OFDM baseband signal for converting OFDM baseband signal into spread spectrum baseband signal for modulating and transmitting the spectrum signal. The spread spectrum baseband signal contains cross-correlated in-phase and quadrature phase baseband signals. Receiving and demodulating a video spread spectrum modulated signal for providing video spread spectrum baseband signal for viewing baseband video signal. Transmitting and receiving OFDM video and voice signals in Video Internet Protocol (ViIP) and in Voice Over Internet Protocol (VoIP) Wi-Fi networks. Processing a touch screen generated signal into a processed touch screen control signal for use by said user, to launch browser from the screen of said mobile device and using a fingerprint generated signal for providing from fingerprint signal a fingerprint authentication signal. Processing a received demodulated location finding modulated signal with a photo camera generated signal and modulating and transmitting the demodulated location finding modulated signal with the camera generated signal.

Abstract translation: 在移动设备中接收和解调正交频分复用（OFDM）调制信号到OFDM基带信号中，用于将OFDM基带信号转换成用于调制和发送频谱信号的扩频基带信号。 扩频基带信号包含交叉相位的同相和正交相位基带信号。 接收和解调用于提供用于观看基带视频信号的视频扩频基带信号的视频扩频调制信号。 在视频互联网协议（ViIP）和互联网语音协议（VoIP）Wi-Fi网络中发送和接收OFDM视频和语音信号。 将触摸屏产生的信号处理成经处理的触摸屏控制信号供所述用户使用，从所述移动设备的屏幕启动浏览器，并使用指纹生成信号，从指纹信号提供指纹认证信号。 用照相机产生的信号处理接收到的解调位置查找调制信号，并用摄像机产生的信号调制和发送解调位置查找调制信号。

公开(公告)号：US09264877B2

公开(公告)日：2016-02-16

申请号：US14716243

申请日：2015-05-19

Applicant: Kamilo Feher

Inventor： Kamilo Feher

IPC: H04L27/28 ,  H04K1/10 ,  H04W4/22 ,  G06F19/00 ,  H04W64/00 ,  H04W88/06 ,  A61B5/00 ,  H04B1/709 ,  H04L27/20 ,  H04L27/26 ,  H04W4/02

CPC classification number: H04L27/2602 ,  A61B5/0015 ,  A61B5/0022 ,  A61B5/01 ,  A61B5/024 ,  A61B5/14532 ,  G06F19/00 ,  G16H10/60 ,  G16H15/00 ,  H04B1/1036 ,  H04B1/69 ,  H04B1/707 ,  H04B1/709 ,  H04B7/04 ,  H04B7/18504 ,  H04B7/2628 ,  H04B2201/70715 ,  H04B2201/70716 ,  H04J11/00 ,  H04L1/0003 ,  H04L5/0007 ,  H04L5/1453 ,  H04L27/2017 ,  H04L27/2071 ,  H04L27/2627 ,  H04L27/2649 ,  H04M7/006 ,  H04W4/023 ,  H04W4/025 ,  H04W4/90 ,  H04W12/06 ,  H04W64/00 ,  H04W88/02 ,  H04W88/06 ,  Y02A90/26

Abstract: Methods used in Modulator and Demodulator (MODEM) for mobile internet and cellular system connected mobile devices and phones for reception of Global Positioning System (GPS) modulated signal, video Orthogonal Frequency Division Multiplexed (OFDM) modulated signal and spread spectrum signals controlled by touch screen generated signals and using fingerprint authentication. Methods for generating in mobile devices and in phones in-phase and quadrature phase cross-correlated Time Constrained (TCS) waveforms and cascaded Long Response (LR) filter filtered signals for modulation and transmission of these cross-correlated signals.

Abstract translation: 用于移动互联网和蜂窝系统的移动互联网和蜂窝系统连接的移动设备和电话接收全球定位系统（GPS）调制信号，视频正交频分复用（OFDM）调制信号和由触摸屏控制的扩频信号的方法 生成信号并使用指纹认证。 用于在移动设备和手机中生成用于调制和传输这些交叉相关信号的同相和正交相位相关时间约束（TCS）波形和级联长响应（LR）滤波信号的方法。

公开(公告)号：US09008233B2

公开(公告)日：2015-04-14

申请号：US13503206

申请日：2010-10-19

Applicant: Paolo Burzigotti ,  Alberto Ginesi

Inventor： Paolo Burzigotti ,  Alberto Ginesi

IPC: H04L27/00 ,  H04B7/185 ,  H04L27/20 ,  H04L27/233

CPC classification number: H04B7/18515 ,  H04L27/0014 ,  H04L27/2017 ,  H04L27/2335

Abstract: An Automatic Identification System—AIS—receiver comprising at least one processing section (PS1, PS2) for synchronizing, demodulating and detecting AIS messages contained in a received signal, said processing steps being carried out separately for a plurality of frequency sub-bands (SB1, SB2, SB3) spanning an AIS channel (CH1, CH2); the receiver being characterized in that: said sub-bands overlap with each others; and said or each processing section is adapted for synchronizing, demodulating and detecting said AIS messages within each sub-band on the basis of timing error and carrier frequency estimations obtained from filtered replicas of said received signal, propagating along respective auxiliary signal paths.

Abstract translation: 一种自动识别系统-RSA接收机，包括用于同步，解调和检测包含在接收信号中的AIS消息的至少一个处理部分（PS1，PS2），所述处理步骤分别针对多个频率子带（SB1 ，SB2，SB3）跨越AIS信道（CH1，CH2）; 所述接收机的特征在于：所述子带彼此重叠; 并且所述或每个处理部分适于基于从所述接收信号的滤波副本获得的定时误差和沿相应的辅助信号路径传播的载波频率估计来同步，解调和检测每个子带内的所述AIS消息。

公开(公告)号：US08942315B1

公开(公告)日：2015-01-27

申请号：US14494218

申请日：2014-09-23

Applicant: Cypress Semiconductor Corporation

Inventor： Marshall Wang ,  Miaoxing Xie

IPC: H04L27/12 ,  H04L27/16 ,  H04L27/00 ,  H04L7/00 ,  H04L7/033

CPC classification number: H04L27/2017 ,  H03C3/095 ,  H03C3/0991 ,  H03L7/0891 ,  H04L2027/0018 ,  H04L2027/0053 ,  H04L2027/0065

Abstract: Systems, methods, and devices are disclosed for implementing frequency calibration circuits. The devices may include a data source configured to generate a first data signal based on a first data value and a second data signal based on a second data value. The devices may include a gain control circuit configured to receive the first and second data signals from the data source, and generate a first modified data signal and a second modified data signal. The devices may include an oscillator circuit configured to generate a first output signal and a second output signal based, at least in part, on the first and second modified data signals. The devices may include a calibration circuit configured to determine an adjustment value based on the first and second output signals, and further configured to change a gain of the gain control circuit based on the determined adjustment value.

Abstract translation: 公开了用于实现频率校准电路的系统，方法和装置。 所述设备可以包括被配置为基于第一数据值生成第一数据信号的数据源和基于第二数据值的第二数据信号。 所述装置可以包括被配置为从数据源接收第一和第二数据信号的增益控制电路，并且生成第一修改数据信号和第二修改数据信号。 该装置可以包括被配置为至少部分地基于第一和第二修改数据信号产生第一输出信号和第二输出信号的振荡器电路。 设备可以包括校准电路，其被配置为基于第一和第二输出信号来确定调整值，并且还被配置为基于所确定的调整值来改变增益控制电路的增益。