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1. 发明申请

US20120188058A1 SYSTEMS AND METHODS FOR JOINT BEAMFORMING AND PREAMBLE DETECTION 有权
标题翻译：用于接头光束和前置检测的系统和方法
公开(公告)号：US20120188058A1
公开(公告)日：2012-07-26
申请号：US13307819
申请日：2011-11-30
申请人： Dong-U Lee , Christopher R. Jones
发明人： Dong-U Lee , Christopher R. Jones
IPC分类号： G06K7/01
CPC分类号： G06K7/10356
摘要： Systems and methods for reading RFID tags using joint beamforming and preamble detection in accordance with embodiments of the invention are disclosed. One embodiment includes an antenna array comprising a plurality of antenna elements, a joint beamformer and preamble detector configured to receive inputs from each of the antenna elements, and a decoder configured to receive a resampled signal from the joint beamformer and preamble detector and to decode data using the resampled signal. In addition, the joint beamformer and preamble detector is configured to correlate the inputs from the antenna elements against a correlation sequence at a plurality of starting sample positions and predetermined rates, use the correlations to select a starting sample position and rate for decoding the received signal, use the correlations to determine beamforming coefficients for combining the inputs, and resample the combined inputs based upon the selected starting sample position and rate.
摘要翻译：公开了根据本发明的实施例的使用联合波束形成和前导码检测来读取RFID标签的系统和方法。一个实施例包括包括多个天线元件的天线阵列，被配置为从每个天线元件接收输入的联合波束形成器和前导码检测器，以及被配置为从联合波束形成器和前导码检测器接收重采样信号并且解码数据的解码器使用重采样信号。此外，联合波束形成器和前导码检测器被配置为将来自天线元件的输入与多个起始采样位置和预定速率下的相关序列相关联，使用相关性来选择用于解码接收信号的起始采样位置和速率，使用相关性来确定用于组合输入的波束成形系数，并且基于所选择的起始采样位置和速率对组合的输入进行重新采样。

2. 发明授权

US08929494B2 Systems and methods for joint beamforming and preamble detection 有权
标题翻译：联合波束成形和前导码检测的系统和方法
公开(公告)号：US08929494B2
公开(公告)日：2015-01-06
申请号：US13307819
申请日：2011-11-30
申请人： Dong-U Lee , Christopher R. Jones
发明人： Dong-U Lee , Christopher R. Jones
IPC分类号： H04B1/10 , G06K7/10
CPC分类号： G06K7/10356
摘要： Systems and methods for reading RFID tags using joint beamforming and preamble detection in accordance with embodiments of the invention are disclosed. One embodiment includes an antenna array comprising a plurality of antenna elements, a joint beamformer and preamble detector configured to receive inputs from each of the antenna elements, and a decoder configured to receive a resampled signal from the joint beamformer and preamble detector and to decode data using the resampled signal. In addition, the joint beamformer and preamble detector is configured to correlate the inputs from the antenna elements against a correlation sequence at a plurality of starting sample positions and predetermined rates, use the correlations to select a starting sample position and rate for decoding the received signal, use the correlations to determine beamforming coefficients for combining the inputs, and resample the combined inputs based upon the selected starting sample position and rate.
摘要翻译：公开了根据本发明的实施例的使用联合波束形成和前导码检测来读取RFID标签的系统和方法。一个实施例包括包括多个天线元件的天线阵列，被配置为从每个天线元件接收输入的联合波束形成器和前导码检测器，以及被配置为从联合波束形成器和前导码检测器接收重采样信号并且解码数据的解码器使用重采样信号。此外，联合波束形成器和前导码检测器被配置为将来自天线元件的输入与多个起始采样位置和预定速率下的相关序列相关联，使用相关性来选择用于解码接收信号的起始采样位置和速率，使用相关性来确定用于组合输入的波束成形系数，并且基于所选择的起始采样位置和速率对组合的输入进行重新采样。

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