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107 条记录 (耗时 0.013 秒)

    RADIO COMMUNICATION SYSTEM, TRANSMISSION DEVICE, RECEPTION DEVICE, RADIO COMMUNICATION METHOD, TRANSMISSION METHOD, AND RECEPTION METHOD
    73.
    发明公开
    RADIO COMMUNICATION SYSTEM, TRANSMISSION DEVICE, RECEPTION DEVICE, RADIO COMMUNICATION METHOD, TRANSMISSION METHOD, AND RECEPTION METHOD 有权
    无线通信系统，发送装置，接收装置，无线电通信方法，发送方法以及接收方法

    公开(公告)号：EP2270993A4

    公开(公告)日：2011-07-27

    申请号：EP09734275

    申请日：2009-04-21

    申请人： NIPPON TELEGRAPH & TELEPHONE

    发明人： FUJINO YOSUKE ,  UCHIDA DAISEI ,  FUJITA TAKAFUMI

    IPC分类号： H04B1/04 ,  H04B1/16

    CPC分类号： H04L27/0014 ,  H04L27/18 ,  H04L27/34 ,  H04L2027/0026 ,  H04L2027/0067 ,  H04L2027/0095

    摘要： A radio communication system includes a transmission device which transmits a plurality of radio signals, and a reception device which receives the plurality of radio signals from the transmission device and estimates, as a carrier frequency offset, a difference between a carrier frequency transmitted by the transmission device and a reference reception frequency used for reception. The system includes the transmission device which branches a first previously determined sequence of training signals, and transmits the radio signals modulated with frequencies by the carrier frequency offsets having regularity for a first sequence of a plurality of branched training signals, and the reception device which estimates the carrier frequency offset with the transmission device according to the first sequence of training signals included in the radio signals transmitted from the transmission device and phase shift amounts obtained from the first previously determined sequence of training signals.

    摘要翻译： 一种无线电通信系统包括：发送装置，其发送无线电信号的多个，并且其接收从发送装置和估计无线电信号的多个A接收装置，作为一个载波频率偏移，由发送mitted载波频率反式之间的差 装置和用于接收基准接收频率。 该系统包括发送装置，该装置分支锻炼信号的第一先前确定的开采序列，并发送通过具有用于支锻炼信号的多个第一序列规律性的载波频率偏移与频率调制的无线电信号，并且其中估计所述接收装置 载波频率与所述发送装置gemäß锻炼信号的第一序列偏移包括在从锻炼信号的第一确定性先前开采的序列获得的发送装置和相移量的无线电信号的反式mitted。

    COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, CONTROL METHOD AND CONTROL PROGRAM
    74.
    发明公开
    COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, CONTROL METHOD AND CONTROL PROGRAM 审中-公开
    KOMMUNIKATIONSGERÄT公司，STEUERUNGSVERFAHREN UND -PROGRMM

    公开(公告)号：EP2187531A1

    公开(公告)日：2010-05-19

    申请号：EP09704293.1

    申请日：2009-01-20

    申请人： Nec Corporation

    发明人： MARUTA, Yasushi

    IPC分类号： H04B1/16 ,  H04B7/26 ,  H04L27/38

    CPC分类号： H04L27/0014 ,  H03J7/04 ,  H04L25/0204 ,  H04L2027/0026

    摘要： To provide a communication device in which an operation of demodulating a reception signal can be performed with good accuracy.
    The communication device controls a parameter used when the reception signal is demodulated by a demodulation unit (104) according to an estimated frequency offset that is estimated from the reception signal and information obtained from the estimated frequency offset.

    摘要翻译： 提供可以以高精度执行解调接收信号的操作的通信装置。 通信装置根据从接收信号估计的估计频率偏移和从估计的频率偏移获得的信息，控制由解调单元（104）解调接收信号时使用的参数。

    Procédé et dispositif pour décoder un signal
    76.
    发明公开
    Procédé et dispositif pour décoder un signal 有权
    Verfahren und Vorrichtung zur Signaldekodierung

    公开(公告)号：EP1940071A1

    公开(公告)日：2008-07-02

    申请号：EP07124061.8

    申请日：2007-12-24

    申请人： ST MICROELECTRONICS S.A.

    发明人： Meyer, Jacques

    IPC分类号： H04L7/04 ,  H04L27/227

    CPC分类号： H04L7/048 ,  H04L7/042 ,  H04L2027/0026

    摘要： L'invention concerne un procédé et un circuit pour déterminer l'en-tête de trame d'un signal. Application à la norme DVBS2.

    摘要翻译： 该方法包括执行样本的乘积，相邻样本的共轭和序列的相应值之间的相关性以产生结果。 在一对连续样本的样本的乘积之和之间执行相关性以产生另一结果。 基于结果检测帧头。 检测到的帧头的样本被校正为确定的频移。 检测对校正样本的最大相关性，并且基于所确定的最大相关值来验证帧头。 还包括用于确定帧头的电路的独立权利要求。

    Compensation for frequency offset in FDM receivers
    78.
    发明公开
    Compensation for frequency offset in FDM receivers 有权
    FDM-Empfängern中的Frequenzversatzausgleich

    公开(公告)号：EP1385293A2

    公开(公告)日：2004-01-28

    申请号：EP03254430.6

    申请日：2003-07-14

    申请人： SAMSUNG ELECTRONICS CO., LTD.

    发明人： Kim, Yung-soo, 109-2401 Kachi Maeul ,  Hwang, Chan-soo, 303-1704 Geumhwa Maeul

    IPC分类号： H04L5/06

    CPC分类号： H04L5/026 ,  H04L2027/0026 ,  H04L2027/0065 ,  H04L2027/0079

    摘要： A method and apparatus are provided for compensating for a frequency offset in an interleaved frequency division multiple access. The method compensates for a frequency offset between a transmission signal and a reception signal for a u th user (1≤ u ≤ U, where U denotes the number of users) in an interleaved frequency division multiple access. The method includes: (a) estimating the frequency offset from a selection signal that is determined as the reception signal for the u th user in an initial mode and as a feedback signal in a normal mode; (b) estimating multiple access interferences representing an extent to which reception signals for i th other users (1≤ i≤ U-1) at the same time interfere with the reception signal for the u th user; (c) subtracting the estimated multiple access interferences from the reception signal for the u th user and determining the subtraction result as the feedback signal; (d) determining whether steps (a), (b), and (c) have been repeated a predetermined number of times, and if it is determined that steps (a), (b), and (c) have not been repeated the predetermined number of times, going back to step (a); and (e) if it is determined that steps (a), (b), and (c) have been repeated the predetermined number of times, estimating the transmission signal for the u th user using the feedback signal finally determined in step (c) and the estimated frequency offset.

    摘要翻译： 提供了一种用于补偿交错分频多址中的频率偏移的方法和装置。 该方法补偿了用户（1≤u≤U，其中U表示用户数量）的发送信号和接收信号之间的频率偏移。该方法包括：（a）从选择中估计频率偏移 信号被确定为初始模式下的第u个用户的接收信号，并且作为正常模式的反馈信号; （b）估计代表其他用户的接收信号干扰第u个用户的接收信号的程度的多个接入干扰; （c）从第u个用户的接收信号中减去估计的多址干扰，并使用该结果作为反馈信号; （d）确定步骤（a），（b）和（c）是否已经重复预定次数，如果不是，则返回步骤（a）; 和（e）如果确定已经重复了预定次数的步骤（a），（b）和（c），则使用在步骤中最终确定的反馈信号来估计第u个用户的发送信号 （c）和估计的频率偏移。

    Circuit and method for signal phase control in a radio transceiver
    79.
    发明公开
    Circuit and method for signal phase control in a radio transceiver 审中-公开
    电路和方法，用于在收发信机的信号的相位控制

    公开(公告)号：EP1162729A3

    公开(公告)日：2003-12-03

    申请号：EP01112791.7

    申请日：2001-05-28

    申请人： Motorola Israel Ltd.

    发明人： Dellon, Jon ,  Shirazi, Gadi ,  Friedlander, Haim

    IPC分类号： H03D3/00 ,  H04B1/40

    CPC分类号： H04B1/40 ,  H04L27/227 ,  H04L2027/0022 ,  H04L2027/0026 ,  H04L2027/0067

    摘要： A circuit for use in a radio transceiver (100), the circuit comprising modulator means (114) for receiving digital signals (I T ,Q T ) for application in combination to control the phase of a carrier to produce a transmission signal for transmission by the transceiver during a transmission mode; demodulator means (126) for demodulating a received signal during a reception mode to recover from the received signal digital signals (I R ,Q R ) representing components of the phase thereof; wherein the demodulator means is coupled to the modulator means to receive therefrom in operation during the reception mode a reference signal indicating the phase of the transmission signal whereby there can be recognised from the received signal which is demodulated the phase applied in the transmission mode thereby to facilitate separation of signal from noise. A transceiver incorporating the circuit may be used in a method of inspecting or authenticating a surface of interest which comprises irradiating the surface with a radio signal which is obtained from the transmission signal of the transceiver and analysing a returned signal from the surface as the received signal received by the transceiver.