中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

78 records (took 0.023 seconds)

    信号校正方法和接收机
    1.
    发明申请
    信号校正方法和接收机 审中-公开

    公开(公告)号：WO2014029074A1

    公开(公告)日：2014-02-27

    申请号：PCT/CN2012/080402

    申请日：2012-08-21

    Applicant: 华为技术有限公司 ,  安琦 ,  刘雅婷 ,  蔡梦

    Inventor： 安琦 ,  刘雅婷 ,  蔡梦

    IPC: H04L25/03 ,  H04L27/00

    CPC classification number: H04L25/03057 ,  H04L1/02 ,  H04L1/20 ,  H04L25/03 ,  H04L27/36 ,  H04L2027/0024

    Abstract: 本发明公开了一种信号校正方法和接收机，属于无线通信领域。该方法包括：获取M路第一信号；对该M路第一信号中的每一路第一信号进行自适应处理，输出M路第一校正信号；根据该M路第一校正信号进行判决，得到M路判决结果；将该M路判决结果中数值相同且数量最多的判决结果，作为反馈信号；接收M路第二信号；根据该反馈信号，分别对该M路第二信号中的每一路第二信号进行自适应处理，输出M路第二校正信号。本发明通过在接收端根据多路信号进行判决，并根据多路判决结果，获取反馈信号，在后续过程中，利用反馈信号分别对每一路第二信号进行自适应处理，避免了由于单个通道的输出错误而对多通道信号的后续处理造成的影响，提升了传输稳定性。

    A MULTI -MODE SINGLE WIRELESS COMMUNICATIONS DEVICE COMPRISING A GPS UNIT AND A FREQUENCY ERROR ESTIMATION UNIT FOR DIFFERENT COMMUNICATION MODI AND A METHOD THEREOF
    2.
    发明申请
    A MULTI -MODE SINGLE WIRELESS COMMUNICATIONS DEVICE COMPRISING A GPS UNIT AND A FREQUENCY ERROR ESTIMATION UNIT FOR DIFFERENT COMMUNICATION MODI AND A METHOD THEREOF 审中-公开
    包含GPS单元的多模单向无线通信设备和用于不同通信模块的频率误差估计单元及其方法

    公开(公告)号：WO2013154903A1

    公开(公告)日：2013-10-17

    申请号：PCT/US2013/035238

    申请日：2013-04-04

    Applicant: APPLE INC.

    Inventor： SHI, Jianxiong ,  MAYOR, Robert W. ,  SU, Li ,  JI, Zhu ,  ELANGOVAN, Thanigaivelu

    IPC: H04L27/00 ,  H04W36/00 ,  H04W76/04

    CPC classification number: H04L27/0014 ,  G01S19/03 ,  H04L2027/0016 ,  H04L2027/0024 ,  H04L2027/0065 ,  H04L2027/0087 ,  H04W48/18

    Abstract: A single radio wireless communications device is contemplated in which the user equipment (UE) operates according to more than one radio access technology. The UE may operate preferentially according to a first radio access technology, and may switch to a different radio access technology at predetermined intervals to check for incoming calls. An error unit within the UE may provide frequency error estimates to a GPS unit during operation according to the first radio access technology based upon signals received in the first radio access technology, unless any time spent in the different radio access technology is longer that a predetermined duration. In response to the predetermined duration being met, the error unit may provide the frequency error estimation to the GPS unit based upon signals received in the different radio access technology.

    Abstract translation: 设想单个无线电无线通信设备，其中用户设备（UE）根据多于一种的无线电接入技术进行操作。 UE可以根据第一无线电接入技术优先操作，并且可以以预定间隔切换到不同的无线电接入技术，以检查呼入。 除非在不同无线电接入技术中花费的时间长于预定的时间，否则UE内的错误单元可以根据第一无线电接入技术在基于第一无线接入技术接收的信号的基础上向GPS单元提供频率误差估计 持续时间。 响应于满足预定的持续时间，错误单元可以基于在不同无线电接入技术中接收的信号向GPS单元提供频率误差估计。

    IMPROVED BLIND CARRIER TRACKING LOOP
    5.
    发明申请
    IMPROVED BLIND CARRIER TRACKING LOOP 审中-公开
    改进的黑匣子跟踪环路

    公开(公告)号：WO2009091357A1

    公开(公告)日：2009-07-23

    申请号：PCT/US2008/000477

    申请日：2008-01-14

    Applicant: THOMSON LICENSING ,  BELOTSERKOVSKY, Maxim

    Inventor： BELOTSERKOVSKY, Maxim

    IPC: H04L27/06 ,  H04L27/38 ,  H04L7/033

    CPC classification number: H04L27/0014 ,  H04L7/033 ,  H04L2027/0024 ,  H04L2027/0044 ,  H04L2027/0069

    Abstract: A receiver is an ATSC (Advanced Television Systems Committee) -receiver and comprises a phase lock loop (PLL) for performing carrier tracking of a carrier in a received signal. The PLL includes a detector (160) comprising two pseudo-Hilbert filters (205, 215). The detector uses energy from both band edges of the received ATSC signal for driving the PLL.

    Abstract translation: 接收机是ATSC（高级电视系统委员会）接收器，包括用于在接收信号中执行载波的载波跟踪的锁相环（PLL）。 PLL包括包括两个伪希尔伯特滤波器（205,215）的检测器（160）。 检测器使用来自接收的ATSC信号的两个边缘的能量来驱动PLL。

    WIRELESS FREQUENCY-DOMAIN MULTI-CHANNEL COMMUNICATIONS
    6.
    发明申请
    WIRELESS FREQUENCY-DOMAIN MULTI-CHANNEL COMMUNICATIONS 审中-公开
    无线频域多通道通信

    公开(公告)号：WO2008067584A1

    公开(公告)日：2008-06-12

    申请号：PCT/AU2007/001419

    申请日：2007-09-25

    Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION ,  MURRAY, Boyd, McGregor ,  ABBOTT, David, Andrew ,  PATHIKULANGARA, Joseph, Abraham ,  BUNTON, John ,  DYADYUK, Valeriy

    Inventor： MURRAY, Boyd, McGregor ,  ABBOTT, David, Andrew ,  PATHIKULANGARA, Joseph, Abraham ,  BUNTON, John ,  DYADYUK, Valeriy

    IPC: H04B1/04 ,  H04B1/06 ,  H04L27/26

    CPC classification number: H04B1/0483 ,  H04L5/0007 ,  H04L25/03834 ,  H04L27/0014 ,  H04L27/2637 ,  H04L27/2653 ,  H04L2027/0024 ,  H04L2027/0067

    Abstract: A circuit for transmission and reception of multi-channel communications is disclosed. The transmitter path includes a digital modulation circuit receiving multiple channel binary data, and for each channel generating a digital representation of the data. A digital-to-analogue (D/A) conversion circuit (140-146) is provided for each data channel. Each D/A conversion circuit receives and converts respective channel digital representations to produce a resultant band limited analogue signal (148-154). The band limitation arises due to a characteristic of said channel digital representations. A bandpass filter (156-162) receives and filters each analogue channel signal. The band width to the start of the stop band of each bandpass filter is wider than a respective band limited analogue channel signal and wider than the Nyquist bandwidth arising from the sampling rate of said D/A conversion circuit. In this way, signal power in unwanted Nyquist zones is effectively removed. A frequency translation circuit (172-188) abuts the multiple channel bandpass filtered analogue signals in the frequency domain without any guard bands between adjacent channel signals.

    Abstract translation: 公开了一种用于多信道通信的发送和接收的电路。 发射机路径包括接收多信道二进制数据的数字调制电路，以及产生数据的数字表示的每个信道。 为每个数据通道提供数模（D / A）转换电路（140-146）。 每个D / A转换电路接收和转换相应的通道数字表示以产生合成的频带限制模拟信号（148-154）。 频带限制由于所述信道数字表示的特征而产生。 带通滤波器（156-162）接收并滤波每个模拟信道信号。 每个带通滤波器的阻带开始的带宽比相应的带限模拟信道信号宽，并且宽于由所述D / A转换电路的采样率产生的奈奎斯特带宽。 以这种方式，有效地消除了不需要的奈奎斯特地区的信号功率。 频率转换电路（172-188）在频域中邻接多通道带通滤波的模拟信号，而在相邻信道信号之间没有任何保护带。

    METHOD OF FILTERING A RADIO COMMUNICATION SIGNAL, COMPRISING THE CALIBRATION OF AN ADAPTIVE SYSTEM, AND CORRESPONDING RADIO COMMUNICATION DEVICE
    8.
    发明申请
    METHOD OF FILTERING A RADIO COMMUNICATION SIGNAL, COMPRISING THE CALIBRATION OF AN ADAPTIVE SYSTEM, AND CORRESPONDING RADIO COMMUNICATION DEVICE 审中-公开
    滤波无线电通信信号的方法，包括自适应系统的校准和无线电通信设备的对应

    公开(公告)号：WO2005018183B1

    公开(公告)日：2005-04-21

    申请号：PCT/FR2004002111

    申请日：2004-08-06

    Applicant: WAVECOM ,  BIETRIX FRANCK ,  MATHIEU BRICE

    Inventor： BIETRIX FRANCK ,  MATHIEU BRICE

    IPC: H04L25/03 ,  H04L27/00

    CPC classification number: H04L25/03038 ,  H04L2025/03407 ,  H04L2025/03662 ,  H04L2027/0016 ,  H04L2027/0024

    Abstract: The invention relates to a method of filtering a useful radio communication signal. According to the invention, one such method involves the use of a digital adaptive filter. The inventive method comprises a step involving the calculation of coefficients of the aforementioned digital adaptive filter, such as to provide a periodic update of said coefficients. The initialisation of the calculation step takes account of a set of coefficients specific to each radio communication device, which were pre-stored in a memory element provided for said purpose.

    Abstract translation: 本发明涉及一种过滤有用的无线电通信信号的方法。 根据本发明，一种这样的方法涉及使用数字自适应滤波器。 本发明的方法包括涉及上述数字自适应滤波器的系数的计算的步骤，例如提供所述系数的周期性更新。 计算步骤的初始化考虑到每个无线电通信设备特定的系数集合，其被预先存储在为所述目的提供的存储器元件中。

    START-UP AUTOMATIC FREQUENCY CONTROL (AFC) METHOD AND APPARATUS
    9.
    发明申请
    START-UP AUTOMATIC FREQUENCY CONTROL (AFC) METHOD AND APPARATUS 审中-公开
    启动自动频率控制（AFC）方法和设备

    公开(公告)号：WO2004012463A3

    公开(公告)日：2005-03-24

    申请号：PCT/US0323658

    申请日：2003-07-28

    Applicant: INTERDIGITAL TECH CORP

    Inventor： DEMIR ALPASLAN

    IPC: H04B1/707 ,  H04L27/00 ,  H04L27/06 ,  H04L27/08

    CPC classification number: H04B1/14 ,  H03J2200/02 ,  H04B1/70735 ,  H04B1/708 ,  H04J11/0069 ,  H04L27/0014 ,  H04L2027/0024 ,  H04L2027/0065 ,  H04L2027/0091

    Abstract: Method and apparatus for adjusting the frequency of a VCO (46) at a receiver to synchronize the receiver with the transmitter by correlating (66) a synchronization code channel with training sequences to estimate positive and negative offsets (34, 36, 38) which are employed to estimate an error, which is then filtered. The filter (42) output provides voltage controlling the VCO. The same technique may be employed to control a numeric controlled oscillator (NCO) (46).

    Abstract translation: 通过将（66）同步码信道与训练序列相关联来估计正和负偏移（34,36,38），用于在接收器处调整VCO（46）的频率以使接收机与发射机同步的方法和装置， 用于估计错误，然后过滤。 滤波器（42）输出提供控制VCO的电压。 可以采用相同的技术来控制数控振荡器（NCO）（46）。

    PHASE/GAIN IMBALANCE ESTIMATION OR COMPENSATION
    10.
    发明申请
    PHASE/GAIN IMBALANCE ESTIMATION OR COMPENSATION 审中-公开
    相位/增益不平等估计或补偿

    公开(公告)号：WO2004054194A1

    公开(公告)日：2004-06-24

    申请号：PCT/IB2003/005779

    申请日：2003-11-28

    Applicant: PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  D'ALESSANDRO, Pierluigi

    Inventor： D'ALESSANDRO, Pierluigi

    IPC: H04L27/00

    CPC classification number: H04L27/3863 ,  H04L27/3872 ,  H04L2027/0016 ,  H04L2027/0024

    Abstract: The present invention relates to a receiver for estimation or compensation of phase imbalance or gain imbalance utilizing a QPSK modulation and a modulation scheme based on a complex scrambling code. According to the present invention the phase imbalance or gain imbalance is estimated or compensated before synchronisation. Thus, the phase imbalance and gain imbalance will not be able to introduce losses in the further phases of the connection.

    Abstract translation: 本发明涉及一种用于使用QPSK调制和基于复数扰码的调制方案来估计或补偿相位不平衡或增益不平衡的接收机。 根据本发明，在同步之前估计或补偿相位不平衡或增益不平衡。 因此，相位不平衡和增益不平衡将不能在连接的进一步阶段引入损耗。

Patent Agency Ranking