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    • 11. 发明授权
    • Block time domain channel estimation in OFDM system
    • OFDM系统中的时域信道估计
    • US08897353B2
    • 2014-11-25
    • US13835305
    • 2013-03-15
    • Steven C ThompsonFernando Lopez de Victoria
    • Steven C ThompsonFernando Lopez de Victoria
    • H03H7/30H04L25/02
    • H04L27/2695H04L25/0212H04L25/0218H04L25/022H04L25/0232H04L25/025
    • An OFDM receiver receives OFDM symbols in the frequency domain and comb filters and then punctures the OFDM symbols to leave symbols with actual pilot information and with null values at the data symbols. The receiver provides the punctured OFDM symbols to an OFDM symbol queue. A virtual pilot interpolator is coupled to the punctured OFDM symbol storage to generate virtual pilot information introduced to OFDM symbols. The interpolator may be a two dimensional Wiener filter. The receiver also includes a time domain channel estimator that processes a first OFDM symbol including virtual pilot information to generate a channel impulse response for the first OFDM symbol. A frequency equalizer equalizes the OFDM symbol in response to the channel impulse response for the first OFDM symbol.
    • OFDM接收机接收频域中的OFDM符号和梳状滤波器,然后对OFDM符号进行穿孔,以留下具有实际导频信息的符号,并在数据符号处具有空值。 接收机将穿孔的OFDM符号提供给OFDM符号队列。 虚拟导频内插器耦合到穿孔的OFDM符号存储器,以产生引入OFDM符号的虚拟导频信息。 内插器可以是二维维纳滤波器。 接收机还包括时域信道估计器,处理包含虚拟导频信息的第一OFDM符号以产生第一OFDM符号的信道脉冲响应。 频率均衡器响应于第一OFDM符号的信道脉冲响应来均衡OFDM符号。
    • 12. 发明申请
    • BLOCK TIME DOMAIN CHANNEL ESTIMATION IN OFDM SYSTEM
    • OFDM系统中的块时域通道估计
    • US20140269882A1
    • 2014-09-18
    • US13835305
    • 2013-03-15
    • Steven C. ThompsonFernando Lopez de Victoria
    • Steven C. ThompsonFernando Lopez de Victoria
    • H04L25/02
    • H04L27/2695H04L25/0212H04L25/0218H04L25/022H04L25/0232H04L25/025
    • An OFDM receiver receives OFDM symbols in the frequency domain and comb filters and then punctures the OFDM symbols to leave symbols with actual pilot information and with null values at the data symbols. The receiver provides the punctured OFDM symbols to an OFDM symbol queue. A virtual pilot interpolator is coupled to the punctured OFDM symbol storage to generate virtual pilot information introduced to OFDM symbols. The interpolator may be a two dimensional Wiener filter. The receiver also includes a time domain channel estimator that processes a first OFDM symbol including virtual pilot information to generate a channel impulse response for the first OFDM symbol. A frequency equalizer equalizes the OFDM symbol in response to the channel impulse response for the first OFDM symbol.
    • OFDM接收机接收频域中的OFDM符号和梳状滤波器,然后对OFDM符号进行穿孔,以留下具有实际导频信息的符号,并在数据符号处具有空值。 接收机将穿孔的OFDM符号提供给OFDM符号队列。 虚拟导频内插器耦合到穿孔的OFDM符号存储器,以产生引入OFDM符号的虚拟导频信息。 内插器可以是二维维纳滤波器。 接收机还包括时域信道估计器,处理包含虚拟导频信息的第一OFDM符号以产生第一OFDM符号的信道脉冲响应。 频率均衡器响应于第一OFDM符号的信道脉冲响应来均衡OFDM符号。
    • 13. 发明授权
    • OFDM receiver with time domain channel estimation
    • 具有时域信道估计的OFDM接收机
    • US08824527B2
    • 2014-09-02
    • US13416990
    • 2012-03-09
    • Steven C ThompsonFernando Lopez de Victoria
    • Steven C ThompsonFernando Lopez de Victoria
    • H04B1/00
    • H04L25/0204H04L25/0212H04L25/03057H04L25/03159H04L27/2647
    • An OFDM communication system performs time domain channel estimation responsive to received symbols before the symbols are processed by a fast Fourier transform. The communication system generates virtual pilots from actual pilots to improve the stability and quality of channel estimation. The system generates a reference signal from the actual and virtual pilots and correlates the resulting reference signal with a signal responsive to the received symbol to generate an initial channel impulse response (CIR) and to determine statistics about the channel. In some circumstances, the resulting reference signal is correlated with a modified symbol in which the actual and virtual pilot locations are emphasized and the data locations are deemphasized. Time domain channel estimation iteratively improves on the initial CIR. The system determines channel estimates for data only symbols through averaging such as interpolation.
    • 在通过快速傅里叶变换处理符号之前,OFDM通信系统响应于接收的符号执行时域信道估计。 通信系统从实际导频生成虚拟导频,提高信道估计的稳定性和质量。 该系统从实际和虚拟导频生成参考信号,并使得到的参考信号与响应于接收到的符号的信号相关,以产生初始信道脉冲响应(CIR)并且确定关于信道的统计。 在一些情况下,所得到的参考信号与其中强调实际和虚拟导频位置并且数据位置被加重的修改符号相关。 时域信道估计在初始CIR上迭代地提高。 该系统通过诸如插值的平均来确定仅数据符号的信道估计。
    • 16. 发明申请
    • OFDM Receiver With Time Domain Channel Estimation
    • 具有时域信道估计的OFDM接收机
    • US20130121392A1
    • 2013-05-16
    • US13416990
    • 2012-03-09
    • Steven C. ThompsonFernando López deVictoria
    • Steven C. ThompsonFernando López deVictoria
    • H04L27/01H04B17/00
    • H04L25/0204H04L25/0212H04L25/03057H04L25/03159H04L27/2647
    • An OFDM communication system performs time domain channel estimation responsive to received symbols before the symbols are processed by a fast Fourier transform. The communication system generates virtual pilots from actual pilots to improve the stability and quality of channel estimation. The system generates a reference signal from the actual and virtual pilots and correlates the resulting reference signal with a signal responsive to the received symbol to generate an initial channel impulse response (CIR) and to determine statistics about the channel. In some circumstances, the resulting reference signal is correlated with a modified symbol in which the actual and virtual pilot locations are emphasized and the data locations are deemphasized. Time domain channel estimation iteratively improves on the initial CIR. The system determines channel estimates for data only symbols through averaging such as interpolation.
    • 在通过快速傅里叶变换处理符号之前,OFDM通信系统响应于接收的符号执行时域信道估计。 通信系统从实际导频生成虚拟导频,提高信道估计的稳定性和质量。 该系统从实际和虚拟导频生成参考信号,并使得到的参考信号与响应于接收到的符号的信号相关,以产生初始信道脉冲响应(CIR)并且确定关于信道的统计。 在一些情况下,所得到的参考信号与其中强调实际和虚拟导频位置并且数据位置被加重的修改符号相关。 时域信道估计在初始CIR上迭代地提高。 该系统通过诸如插值的平均来确定仅数据符号的信道估计。
    • 18. 发明申请
    • Standard
    • 标准
    • US20080197253A1
    • 2008-08-21
    • US11909116
    • 2006-03-24
    • Steven C. Thompson
    • Steven C. Thompson
    • A47B57/56E04G5/06E04B2/74
    • A47B96/1416A47B57/42
    • A standard having a base plate that in some embodiments includes a first upturned edge, a second upturned edge, and at least one aperture. A first support can be positioned between the first upturned edge and the aperture, and can extend past a top surface of the first upturned edge. A second support can be positioned between the second upturned edge and the aperture, and can extends past a top surface of the second upturned edge. The upturned portions and supports can be dimensioned such that fasteners used to secure the standard to a surface do not interfere with elements (e.g., drywall, pegboard, display panels, and the like) covering the base plate, and/or such that the supports are at least partially recessed in a surface defined by such covering elements.
    • 具有基板的标准,在一些实施例中包括第一向上翻边,第二上翻边和至少一个孔。 第一支撑件可以位于第一向上翻边和孔之间,并且可以延伸经过第一向上翻边的顶表面。 第二支撑件可以定位在第二上翻边缘和孔之间,并且可以延伸经过第二向上翻边的顶表面。 上翻的部分和支撑件的尺寸可以使得用于将标准固定到表面上的紧固件不会干涉覆盖基板的元件(例如,干墙,栓板,显示面板等),和/或使得支撑件 至少部分地凹陷在由这种覆盖元件限定的表面中。
    • 20. 发明授权
    • Tag holder assembly
    • 标签架组件
    • US06935061B2
    • 2005-08-30
    • US10303459
    • 2002-11-25
    • Steven C. Thompson
    • Steven C. Thompson
    • G09F3/20G09F3/18
    • G09F3/204
    • A tag holder assembly is provided for mounting on the edges of a display shelf for retail merchandise. When the assembly is pressed against the shelf, the assembly flexes to permit members of the assembly to rotate into a locked position. This flexion gives rise to forces which reliably secure the assembly to the shelf. In one embodiment, the assembly can be removed by rotating the members to an unlocked position. The assembly can be made as a unitary device including, for example, a living hinge. Alternatively, the assembly can made as two or more separate members. The assembly can also include a projecting member that extends higher than the front surface of the shelf to prevent objects on the shelf from falling off. Significantly, any forces which the objects transmit to the assembly through the projecting member tend to lock the assembly even more securely on the shelf.
    • 标签保持器组件被提供用于安装在用于零售商品的显示架的边缘上。 当组件被压靠在搁架上时,组件弯曲以允许组件的构件旋转到锁定位置。 这种弯曲产生将组件可靠地固定到搁架上的力。 在一个实施例中,可以通过将构件旋转到解锁位置来移除组件。 组件可以制成整体装置,包括例如活动铰链。 或者,组件可以制成两个或更多个分开的构件。 组件还可以包括突出构件,该突出构件比架子的前表面更高地延伸,以防止搁板上的物体脱落。 重要的是,物体通过突出构件传递到组件的任何力都倾向于将组件更牢固地锁定在架子上。