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26 条记录 (耗时 0.013 秒)

    METHODS AND SYSTEMS FOR REDUCING PAPR OF AN OFDM SIGNAL
    1.
    发明公开
    METHODS AND SYSTEMS FOR REDUCING PAPR OF AN OFDM SIGNAL 有权
    的方法和系统用于减小OFDM信号的PAPR

    公开(公告)号：EP2314035A1

    公开(公告)日：2011-04-27

    申请号：EP09790137.5

    申请日：2009-07-08

    申请人： QUALCOMM Incorporated

    发明人： KIM, Je, Woo ,  NAGUIB, Ayman, Fawzy ,  PARK, Jong, Hyeon ,  CHANG, Tae, Ryun

    IPC分类号： H04L27/26

    CPC分类号： H04L5/0007 ,  H04L27/2602 ,  H04L27/2614

    摘要： Certain embodiments of the present disclosure provide a method and an apparatus for peak-to-average power ratio (PAPR) reduction of a transmission signal in a single carrier frequency division multiple access (SC-FDMA) system. The method may utilize a permutation of a time domain signal, and/or a permutation of a frequency domain signal or a permutation of a signal transformed by a unitary matrix. The apparatus may include an M-point DFT or some other
    MxM unitary matrix, N-point IDFT, interpolation and frequency conversion units, and a pair of possibly different permutation matrices of size
    MxM , where
    M can be less or equal than N.

    RECEPTION OF H-ARQ TRANSMISSIONS WITH INTERFERENCE CANCELLATION IN A QUASI-ORTHOGONAL COMMUNICATION SYSTEM
    5.
    发明公开
    RECEPTION OF H-ARQ TRANSMISSIONS WITH INTERFERENCE CANCELLATION IN A QUASI-ORTHOGONAL COMMUNICATION SYSTEM 有权
    在一个准正交通信系统的H-ARQ传输的干扰抑制的接收

    公开(公告)号：EP1889493A2

    公开(公告)日：2008-02-20

    申请号：EP06771400.6

    申请日：2006-05-25

    申请人： QUALCOMM INCORPORATED

    发明人： NAGUIB, Ayman, Fawzy ,  GOROKHOV, Alexei ,  GORE, Dhananjay, Askok ,  JI, Tingfang ,  SUTIVONG, Arak

    IPC分类号： H04Q7/00

    CPC分类号： H04L1/1819 ,  H04B2001/7152 ,  H04L5/0023 ,  H04L25/0224

    摘要： To receive packets with interference cancellation, block transmissions for the packets are received on time-frequency blocks used by these packets. Receiver spatial processing is performed on input symbols to obtain detected symbols. Each packet is demodulated and decoded based on all detected symbols obtained for all block transmissions received for the packet. For each packet that is decoded correctly, the transmission for the packet is terminated, the interference due to the packet is estimated, and the estimated interference is subtracted from the input symbols for all time-frequency blocks used by the packet. Receiver spatial processing is performed on the interference-canceled symbols to obtain new detected symbols for all time-frequency blocks used by all correctly decoded packets. Each packet decoded in error and overlapping at least partially with any correctly decoded packet may be demodulated and decoded based on all detected symbols available for that packet.

    NETWORK-CENTRIC DETERMINATION OF NODE PROCESSING DELAY
    8.
    发明公开
    NETWORK-CENTRIC DETERMINATION OF NODE PROCESSING DELAY 审中-公开
    NETZWERKZENTRISCHE BESTIMMUNG VONKNOTENVERARBEITUNGSVERZÖGERUNG

    公开(公告)号：EP2368130A2

    公开(公告)日：2011-09-28

    申请号：EP09759856.9

    申请日：2009-11-20

    申请人： Qualcomm Incorporated

    发明人： AGGARWAL, Alok ,  NAGUIB, Ayman, Fawzy ,  SRIDHARA, Vinay

    IPC分类号： G01S5/02 ,  G01S5/06

    CPC分类号： G01S5/021 ,  G01S5/0284 ,  G01S5/06 ,  H04L29/08657 ,  H04W4/04 ,  H04W64/00

    摘要： Apparatus and methods are directed to calibrating a delay within a wireless access point for determining a position of a mobile station. One method includes receiving an initial packet at an eavesdropping device, receiving a response packet, sent by another entity, at the eavesdropping device, computing a time difference based upon the packet arrival times, and providing the time difference to a position determination entity. Another method includes providing a request to appropriate eavesdropping devices to send information, receiving, from each appropriate eavesdropping device, a time difference which represents a difference in a time of arrival of a packet transmitted by the wireless access point and a time of arrival of a packet transmitted by the mobile station, determining a processing delay estimate based upon the time differences, and determining a position of the mobile station based upon the processing delay estimate and the received time differences.

    摘要翻译： 设备和方法旨在校准无线接入点内的延迟以确定移动台的位置。 一种方法包括在窃听设备接收初始分组，在窃听设备接收由另一实体发送的响应分组，基于分组到达时间计算时间差，并将时间差提供给位置确定实体。 另一种方法包括向适当的窃听设备提供发送信息的请求，从每个适当的窃听设备接收表示由无线接入点发送的分组的到达时间的差异的时间差和 由移动台发送的分组，基于时间差确定处理延迟估计，以及基于处理延迟估计和所接收的时间差确定移动台的位置。

    METHODS AND SYSTEMS FOR FAST RANGING IN WIRELESS COMMUNICATION NETWORKS
    9.
    发明公开
    METHODS AND SYSTEMS FOR FAST RANGING IN WIRELESS COMMUNICATION NETWORKS 审中-公开
    方法和系统在无线通信网络快速确定距离

    公开(公告)号：EP2304892A1

    公开(公告)日：2011-04-06

    申请号：EP09767872.6

    申请日：2009-06-19

    申请人： QUALCOMM Incorporated

    发明人： CHIN, Tom ,  LEE, Kuo-Chun ,  CHENG, Steven, D. ,  NAGUIB, Ayman, Fawzy

    IPC分类号： H04L1/18

    CPC分类号： H04W48/16 ,  H04L1/1867

    摘要： A method for efficiently performing ranging in a wireless communication network may be implemented by a mobile station. The method may include sending a ranging code to a base station. The method may also include receiving a ranging response message from the base station. The method may also include determining whether a ranging failure condition is satisfied. The ranging failure condition may relate to something other than a duration of time. The method may further include re-sending the ranging code to the base station if the ranging failure condition is satisfied.