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    • 4. 发明授权
    • Method and system for installing and operating discrete multi tone repeaters
    • 安装和运行离散多音调中继器的方法和系统
    • US09100176B2
    • 2015-08-04
    • US13140825
    • 2009-12-23
    • Ioannis KanellakopoulosAmit Priebatch
    • Ioannis KanellakopoulosAmit Priebatch
    • H04L5/14H04B3/36H04L5/00H04L25/02
    • H04L5/1461H04B3/36H04L5/0007H04L25/022
    • A system and method for providing a service over a repeatered link that couples a service provider transceiver to a remote modem, the method includes: computing, for each frequency bin out of multiple frequency bins of a spectrum, a level of far-end cross-talk (FEXT) interference that is generated to a network-side receiver of a frequency division multiplexing (FDM) discrete multi tone (DMT) repeater by a service provider transmitter that provides an FDM DMT service that is supported by the FDM DMT repeater; computing, for each frequency bins out of the multiple frequency bins, a highest allowable transmit power level of a customer-side transmitter of the FDM DMT repeater that generates to the network-side receiver of the FDM DMT repeater a cross-talk interference that does not exceed a level of FEXT interference that is generated to the network-side receiver of the FDM DMT repeater by the service provider transmitter.
    • 一种用于通过将服务提供商收发器耦合到远程调制解调器的中继链路来提供服务的系统和方法,所述方法包括:针对频谱的多个频率仓中的每个频率仓,计算远端交叉的水平, (FEXT)干扰,其由提供由FDM DMT中继器支持的FDM DMT服务的服务提供商发射机对频分复用(FDM)离散多音调(DMT)中继器的网络侧接收机产生; 对于每个频率,为多个频率仓中的每个频段进行计算,是FDM DMT中继器的客户端发射机的最大可允许发射功率电平,其向FDM DMT中继器的网络侧接收机产生一个串扰干扰 不超过由服务提供商发送器向FDM DMT中继器的网络侧接收机产生的FEXT干扰水平。
    • 6. 发明申请
    • METHOD AND SYSTEM FOR INSTALLING AND OPERATING DISCRETE MULTI TONE REPEATERS
    • 用于安装和操作离散多音调播放器的方法和系统
    • US20120020277A1
    • 2012-01-26
    • US13140825
    • 2009-12-23
    • Ioannis KanellakopoulosAmit Priebatch
    • Ioannis KanellakopoulosAmit Priebatch
    • H04W88/02
    • H04L5/1461H04B3/36H04L5/0007H04L25/022
    • A system and method for providing a service over a repeatered link that couples a service provider transceiver to a remote modem, the method includes: computing, for each frequency bin out of multiple frequency bins of a spectrum, a level of far-end cross-talk (FEXT) interference that is generated to a network-side receiver of a frequency division multiplexing (FDM) discrete multi tone (DMT) repeater by a service provider transmitter that provides an FDM DMT service that is supported by the FDM DMT repeater; computing, for each frequency bins out of the multiple frequency bins, a highest allowable transmit power level of a customer-side transmitter of the FDM DMT repeater that generates to the network-side receiver of the FDM DMT repeater a cross-talk interference that does not exceed a level of FEXT interference that is generated to the network-side receiver of the FDM DMT repeater by the service provider transmitter.
    • 一种用于通过将服务提供商收发器耦合到远程调制解调器的中继链路来提供服务的系统和方法,所述方法包括:针对频谱的多个频率仓中的每个频率仓,计算远端交叉的水平, (FEXT)干扰,其由提供由FDM DMT中继器支持的FDM DMT服务的服务提供商发射机对频分复用(FDM)离散多音调(DMT)中继器的网络侧接收机产生; 对于每个频率,为多个频率仓中的每个频段进行计算,是FDM DMT中继器的客户端发射机的最大可允许发射功率电平,其向FDM DMT中继器的网络侧接收机产生一个串扰干扰 不超过由服务提供商发送器向FDM DMT中继器的网络侧接收机产生的FEXT干扰水平。
    • 7. 发明授权
    • Mitigation of interference and crosstalk in communications systems
    • 减轻通信系统中的干扰和串扰
    • US07978591B2
    • 2011-07-12
    • US11694981
    • 2007-03-31
    • Mark Alan EricksonThorkell GudmundssonIoannis KanellakopoulosJohn Josef Hench
    • Mark Alan EricksonThorkell GudmundssonIoannis KanellakopoulosJohn Josef Hench
    • H04J1/12H04J3/10
    • H04L25/03006H04L25/0246H04L2025/03426
    • Signals in a multi-channel, impaired communication system are post-processed at the receiver. A triangular matrix Decision Feedback Demodulator (DFD) at the receiver extracts channels without requiring delivery of receiver parameters to the transmitter. Multi-Input Multi-Output (MIMO) processing matrices and DFD parameters are computed by first applying matrix transformations to diagonalize the noise covariance matrix of the multiple channels received at the receiver. QR decompositions (i.e., decompositions into orthogonal and triangular matrices) are then applied to the main channels to obtain triangular channel matrices. The noise-diagonalizing transformations and QR decompositions are then combined to form the MIMO postprocessing matrices and DFD parameters. MIMO postprocessing matrices and DFD parameters are computed from training data and then adapted during live data transmission.
    • 多通道,受损的通信系统中的信号在接收机上进行后处理。 在接收器处的三角矩阵判决反馈解调器(DFD)提取信道而不需要向发射机传送接收机参数。 通过首先应用矩阵变换来对接收机接收的多个信道的噪声协方差矩阵进行对角化来计算多输入多输出(MIMO)处理矩阵和DFD参数。 然后将QR分解(即,分解成正交和三角矩阵)施加到主信道以获得三角形信道矩阵。 然后将噪声对角化变换和QR分解组合以形成MIMO后处理矩阵和DFD参数。 从训练数据计算MIMO后处理矩阵和DFD参数,然后在实时数据传输期间进行调整。
    • 9. 发明授权
    • Method and apparatus for intelligent ranging via image subtraction
    • 通过图像减法进行智能测距的方法和装置
    • US06711280B2
    • 2004-03-23
    • US09866072
    • 2001-05-25
    • Oscar M. StafsuddIoannis KanellakopoulosPhyllis R. NelsonNicholas Bambos
    • Oscar M. StafsuddIoannis KanellakopoulosPhyllis R. NelsonNicholas Bambos
    • G06R900
    • G06K9/3241G06K2209/23G06T7/586
    • A method and system for ranging an object are disclosed. The method includes illuminating a field of view potentially including the object, synchronously receiving reflected signals from the field of view with and without illumination, capturing first and second images within an array, and generating a subtraction image using the images. One image is captured in the array while the other image is in the array. The first and second images include reflected signals from the field of view with and without illumination, respectively. The array includes first and second groups of lines that are unmasked and masked, respectively. In one exposure, the first group of lines is loaded with the first or second image. The image in the first group of lines is shifted into the second group. In another exposure, the first group of lines is loaded with the other image, which is shifted into the second group.
    • 公开了一种测距对象的方法和系统。 该方法包括照亮潜在地包括对象的视场,在有和没有照明的情况下同步地接收来自视场的反射信号,捕获阵列内的第一和第二图像,以及使用该图像生成减影图像。 一个图像被捕获在阵列中,而另一个图像在数组中。 第一和第二图像分别包括来自具有和不具有照明的视场的反射信号。 该阵列分别包括未屏蔽和屏蔽的第一组和第二组线。 在一次曝光中,第一组线条被装入第一或第二图像。 第一组线中的图像被移入第二组。 在另一曝光中,第一组线被加载另一个图像,该图像被移入第二组。