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    • 5. 发明授权
    • Code-division-multiple-access (DS-CDMA) channels with aperiodic codes
    • 具有非周期性代码的码分多址(DS-CDMA)通道
    • US07376106B2
    • 2008-05-20
    • US10306916
    • 2002-11-27
    • Shay Ben-DavidEhud KarninJacob Sheinvald
    • Shay Ben-DavidEhud KarninJacob Sheinvald
    • H04B7/00H04B7/216
    • H04B1/7105H04L25/0204H04L25/0236
    • A method for channel estimation, includes receiving an input signal due to a superposition of waveforms encoding symbols transmitted respectively by a plurality of transmitters in a common frequency band. Each transmitter among the plurality of transmitters modulates the symbols with a respective spreading code. The input signal is sampled at sampling intervals over the duration of an observation period, thus providing a sequence of samples. The sequence of complex samples is processed to estimate a channel response for each of the transmitters by maximizing, individually for each of the transmitters and based on the respective spreading code of the transmitter, a likelihood of correctly decoding the transmitted symbols using the estimated channel response.
    • 一种用于信道估计的方法,包括由于叠加了由共同频带中的多个发射机分别发送的符号的波形的叠加而接收输入信号。 多个发射机中的每个发射机用相应的扩展码来对符号进行调制。 在观察周期的持续时间内以采样间隔采样输入信号,从而提供采样序列。 处理复样本的序列以通过针对每个发射机单独最大化并且基于发射机的相应扩展码来估计每个发射机的信道响应,使用所估计的信道响应来正确解码所发送的符号的可能性 。
    • 10. 发明授权
    • Automated processing of paper forms using remotely-stored form content
    • 使用远程存储的表单内容自动处理纸张表单
    • US07532368B2
    • 2009-05-12
    • US11550552
    • 2006-10-18
    • Shay Ben-DavidAmir Geva
    • Shay Ben-DavidAmir Geva
    • G06K15/00
    • G06F17/243
    • A computer-implemented method for processing paper forms includes capturing at a computer system an image of a paper form in which information has been filled-in. A location identifier is extracted from the image. The location identifier indicates an address in a storage location external to the computer system, at which the filled-in information is electronically stored. The information is retrieved responsively to the location identifier by communication with the storage location via a wide area network (WAN), so as to convey the information electronically from the storage location to the computer system. The information is processed using a data processing application running on the computer system.
    • 用于处理纸张形式的计算机实现的方法包括在计算机系统处捕获其中填写了信息的纸张形式的图像。 从图像中提取位置标识符。 位置标识符指示计算机系统外部的存储位置中的电子存储填充信息的地址。 通过经由广域网(WAN)与存储位置通信来响应于位置标识符来检索信息,以便将信息从存储位置传送到计算机系统。 使用在计算机系统上运行的数据处理应用来处理信息。