Apparatus and method for frequency acquisition in wireless communication network
    1.
    发明专利
    Apparatus and method for frequency acquisition in wireless communication network 审中-公开
    无线通信网络频率采集的设备和方法

    公开(公告)号:JP2010220238A

    公开(公告)日:2010-09-30

    申请号:JP2010106699

    申请日:2010-05-06

    Abstract: PROBLEM TO BE SOLVED: To provide a method and apparatus for initial frequency acquisition in a wireless communication network. SOLUTION: In an aspect, the method for initial frequency acquisition includes the steps of: receiving a stream of input samples from a transmitter; determining an estimate for a frequency offset associated with the transmitter and the receiver based on the received input samples; and compensating for the frequency offset to achieve an initial frequency acquisition. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题:提供一种用于在无线通信网络中初始频率获取的方法和装置。 解决方案:一方面,用于初始频率获取的方法包括以下步骤:从发射机接收输入样本流; 基于所接收的输入样本确定与所述发射机和所述接收机相关联的频率偏移的估计; 并补偿频率偏移以实现初始频率采集。 版权所有(C)2010,JPO&INPIT

    SINCRONIZACION EN UN SISTEMA DE DIFUSION DE OFDM UTILIZANDO PILOTOS MULTIPLEXADOS POR DIVISION DE TIEMPO

    公开(公告)号:AR046406A1

    公开(公告)日:2005-12-07

    申请号:ARP040103139

    申请日:2004-09-02

    Applicant: QUALCOMM INC

    Abstract: En un sistema de OFDM (Multiplexación por División Ortogonal de Frecuencia), un transmisor efectúa la difusión de un primer piloto en TDM (Multiplexación por División de Tiempo) en un primer conjunto de sub-bandas seguido por un segundo piloto en TDM en un segundo conjunto de sub-bandas en cada cuadro. Las sub-bandas en cada conjunto son seleccionados entre N-sub-bandas totales tal que 1) un símbolo de OFDM para el primer piloto de TDM contiene al menos S1 secuencias idénticas de piloto-1 de longitud L1 y 2) un símbolo de OFDM para el segundo piloto de TDM contiene al menos S2 secuencias idénticas de piloto-2 de longitud L2, donde L2 > L1, S1 x L1 = N, y S2 x L2 = N. El transmisor puede también difundir un piloto de FDM (Multiplexación por División Ortogonal de Frecuencia). Un receptor procesa el primer piloto TDM para obtener el tiempo del cuadro (por ejemplo, llevando a cabo la correlación entre secuencias diferentes de piloto-1) y además procesar el segundo piloto de TDM para obtener el tiempo del símbolo (por ejemplo, al detectar para el inicio de un estimado de respuesta de impulso del canal derivado del segundo piloto de TDM).

    SYSTEMS AND METHODS FOR FREQUENCY ACQUISITION IN A WIRELESS COMMUNICATION NETWORK

    公开(公告)号:CA2554406A1

    公开(公告)日:2005-08-11

    申请号:CA2554406

    申请日:2005-01-24

    Applicant: QUALCOMM INC

    Abstract: The disclosed embodiments provide for methods and systems for initial frequency acquisition in a wireless communication network. In one aspect, a method for initial frequency acquisition includes the acts of receiving a stream of input samples from a transmitter, determining an estimate for a frequency offset associated with the transmitter and the receiver based on t he received input samples, and compensating for the frequency offset to achieve an initial frequency acquisition.

    FORWARD LINK FRAME GENERATION IN A MACHINE-TO-MACHINE (M2M) WIRELESS WIDE AREA NETWORK (WAN)
    5.
    发明申请
    FORWARD LINK FRAME GENERATION IN A MACHINE-TO-MACHINE (M2M) WIRELESS WIDE AREA NETWORK (WAN) 审中-公开
    机器到机器(M2M)中的前向链路帧生成无线宽域网(WAN)

    公开(公告)号:WO2014043108A3

    公开(公告)日:2014-05-08

    申请号:PCT/US2013059002

    申请日:2013-09-10

    Applicant: QUALCOMM INC

    Abstract: Methods, systems, and devices are described for managing wireless communications in a machine-to-machine (M2M) wireless Wide Area Network (WAN). A physical layer frame is generated. The frame being used for wireless M2M communications on a forward link in the M2M wireless WAN. The frame including no more than three channels. The physical layer frame including a first channel including paging channel, a second channel including a traffic channel, and a third channel including an acknowledgment (ACK) channel. A time division multiplexing (TDM) operation is performed on pilot symbols and data symbols to obtain a TDM pilot burst. At least one TDM pilot burst is inserted into each channel of the physical layer frame. The physical layer frame is transmitted on the forward link at a low data rate.

    Abstract translation: 描述了用于管理机器对机器(M2M)无线广域网(WAN)中的无线通信的方法,系统和设备。 生成物理层帧。 该帧用于在M2M无线WAN中的前向链路上的无线M2M通信。 该框架不超过三个通道。 物理层帧包括包括寻呼信道的第一信道,包括业务信道的第二信道和包括确认(ACK)信道的第三信道。 对导频符号和数据符号执行时分复用(TDM)操作以获得TDM导频突发。 至少一个TDM导频突发被插入到物理层帧的每个信道中。 物理层帧以低数据速率在前向链路上传输。

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