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    • 1. 发明申请
    • Processing of an OFDM signal
    • OFDM信号的处理
    • US20060126764A1
    • 2006-06-15
    • US11007237
    • 2004-12-09
    • Carl EklundLars Lindh
    • Carl EklundLars Lindh
    • H03D1/00
    • H04L27/3411H04L27/2614
    • The invention relates to an OFDM-transmitter, comprising means for transforming (400) data to be transmitted in frequency-to-time transformation to a basic waveform containing waveform components representing subbands of the spectrum of the signal. The transmitter comprises means for forming (402) at least one alternative waveform from components of the basic waveform, where at least one component in the alternative waveform is delayed in time, and means for selecting (414) a waveform for transmission from the group of waveforms, containing the basic waveform and the at least one alternative waveform. The invention also relates to a method for transmitting an OFDM signal, a method for processing an OFDM signal and an OFDM signal processing arrangement.
    • 本发明涉及一种OFDM发射机,包括用于将要在频率 - 时间变换中发射的数据(400)变换成包含表示信号频谱的子带的波形分量的基本波形的装置。 发射机包括用于从基本波形的分量形成(402)至少一个替代波形的装置,其中替代波形中的至少一个分量在时间上被延迟,以及用于从 波形,包含基本波形和至少一个替代波形。 本发明还涉及OFDM信号的发送方法,OFDM信号的处理方法以及OFDM信号处理装置。
    • 2. 发明授权
    • Processing of an OFDM signal
    • OFDM信号的处理
    • US07346041B2
    • 2008-03-18
    • US11007237
    • 2004-12-09
    • Carl EklundLars Lindh
    • Carl EklundLars Lindh
    • H04J1/00
    • H04L27/3411H04L27/2614
    • The invention relates to an OFDM-transmitter, comprising means for transforming (400) data to be transmitted in frequency-to-time transformation to a basic waveform containing waveform components representing subbands of the spectrum of the signal. The transmitter comprises means for forming (402) at least one alternative waveform from components of the basic waveform, where at least one component in the alternative waveform is delayed in time, and means for selecting (414) a waveform for transmission from the group of waveforms, containing the basic waveform and the at least one alternative waveform. The invention also relates to a method for transmitting an OFDM signal, a method for processing an OFDM signal and an OFDM signal processing arrangement.
    • 本发明涉及一种OFDM发射机,包括用于将要在频率 - 时间变换中发射的数据(400)变换成包含表示信号频谱的子带的波形分量的基本波形的装置。 发射机包括用于从基本波形的分量形成(402)至少一个替代波形的装置,其中替代波形中的至少一个分量在时间上被延迟,以及用于从 波形,包含基本波形和至少一个替代波形。 本发明还涉及OFDM信号的发送方法,OFDM信号的处理方法以及OFDM信号处理装置。
    • 4. 发明授权
    • Phase noise canceling OFDM receiver
    • 相位噪声消除OFDM接收机
    • US07733993B2
    • 2010-06-08
    • US11251515
    • 2005-10-14
    • Lars Lindh
    • Lars Lindh
    • H03D1/04
    • H04L27/2657H04L27/0014H04L27/2679H04L2027/0032H04L2027/0055H04L2027/0067
    • A receiver includes, in series, at least one receive antenna, a buffer, and arithmetic logic block, a symbol detector, and a phase noise estimator. A further feedback loop couples an output of the phase noise estimator to an input of the arithmetic logic block for providing an estimate of phase noise. The buffer is for storing the received signal. The arithmetic logic block, such as a multiplier, is for removing the estimate of phase noise, received via the feedback loop, from the buffered signal. The symbol detector is for estimating a symbol from the output of the arithmetic logic block. The phase noise estimator estimates phase noise from two inputs received from the symbol detector: the estimated symbol and the remainder signal. Preferably, the phase noise estimator performs an IFFT on these two inputs and Kalman filters the result. Iteratively estimating the phase noise improves precision substantially.
    • 接收器包括串联的至少一个接收天线,缓冲器和算术逻辑块,符号检测器和相位噪声估计器。 另一个反馈环路将相位噪声估计器的输出耦合到算术逻辑块的输入端,以提供相位噪声的估计。 缓冲器用于存储接收到的信号。 诸如乘法器的算术逻辑块用于从缓冲信号去除经由反馈回路接收的相位噪声的估计。 符号检测器用于从算术逻辑块的输出估计符号。 相位噪声估计器估计从符号检测器接收的两个输入的相位噪声:估计符号和余数信号。 优选地,相位噪声估计器对这两个输入执行IFFT,并且对该结果进行卡尔曼滤波。 迭代估计相位噪声大大提高了精度。
    • 5. 发明申请
    • Phase noise canceling OFDM receiver
    • 相位噪声消除OFDM接收机
    • US20070086533A1
    • 2007-04-19
    • US11251515
    • 2005-10-14
    • Lars Lindh
    • Lars Lindh
    • H04K1/10
    • H04L27/2657H04L27/0014H04L27/2679H04L2027/0032H04L2027/0055H04L2027/0067
    • A receiver includes, in series, at least one receive antenna, a buffer, and arithmetic logic block, a symbol detector, and a phase noise estimator. A further feedback loop couples an output of the phase noise estimator to an input of the arithmetic logic block for providing an estimate of phase noise. The buffer is for storing the received signal. The arithmetic logic block, such as a multiplier, is for removing the estimate of phase noise, received via the feedback loop, from the buffered signal. The symbol detector is for estimating a symbol from the output of the arithmetic logic block. The phase noise estimator estimates phase noise from two inputs received from the symbol detector: the estimated symbol and the remainder signal. Preferably, the phase noise estimator performs an IFFT on these two inputs and Kalman filters the result. Iteratively estimating the phase noise improves precision substantially.
    • 接收器包括串联的至少一个接收天线,缓冲器和算术逻辑块,符号检测器和相位噪声估计器。 另一个反馈环路将相位噪声估计器的输出耦合到算术逻辑块的输入端,以提供相位噪声的估计。 缓冲器用于存储接收到的信号。 诸如乘法器的算术逻辑块用于从缓冲信号去除经由反馈回路接收的相位噪声的估计。 符号检测器用于从算术逻辑块的输出估计符号。 相位噪声估计器估计从符号检测器接收的两个输入的相位噪声:估计符号和余数信号。 优选地,相位噪声估计器对这两个输入执行IFFT,并且对该结果进行卡尔曼滤波。 迭代估计相位噪声大大提高了精度。
    • 7. 发明申请
    • Downlink Control Signaling for a Backhaul Link
    • 用于回程链路的下行链路控制信令
    • US20140254468A1
    • 2014-09-11
    • US13520816
    • 2010-01-08
    • Bernhard RaafGilles CharbitXiangguang CheErlin ZengLars Lindh
    • Bernhard RaafGilles CharbitXiangguang CheErlin ZengLars Lindh
    • H04W16/26
    • H04W16/26H04B7/15528H04W52/325H04W52/38H04W56/003H04W84/047
    • In one exemplary embodiment of the invention, a method includes: sending, within at least one of a first and a second symbol time, a first transmission having first downlink control information from a network access node to a first mobile node located within a first cell serviced by the network access node; and sending, within at least a third symbol time, a second transmission having second downlink control information from the network access node to a relay node over a wireless communication link that is a backhaul link, where the second transmission is configured to enable the relay node to send, within the first symbol time, a third transmission having third downlink control information from the relay node to a second mobile node located within a second cell serviced by the relay node, where the second cell is different from the first cell.
    • 在本发明的一个示例性实施例中,一种方法包括:在第一和第二符号时间的至少一个内发送具有第一下行链路控制信息的第一传输,该第一传输具有从网络接入节点到位于第一小区内的第一移动节点 由网络接入节点服务; 以及在至少第三符号时间内,通过作为回程链路的无线通信链路,将具有第二下行链路控制信息的第二传输从所述网络接入节点发送到中继节点,其中所述第二传输被配置为使能所述中继节点 在第一符号时间内发送具有第三下行链路控制信息的第三传输,该第三传输从中继节点到由中继节点服务的第二小区内的第二移动节点,其中第二小区与第一小区不同。