公开(公告)号：US09854552B2

公开(公告)日：2017-12-26

申请号：US14740425

申请日：2015-06-16

Applicant: NATIONAL INSTRUMENTS CORPORATION

Inventor： Max Koehler ,  Achim Nahler ,  Amal Ekbal

IPC: H04B17/00 ,  H04W56/00 ,  H04L27/26

CPC classification number: H04W56/0035 ,  H04L27/2663 ,  H04L27/2671 ,  H04L27/2675 ,  H04L27/2688

Abstract: Techniques are disclosed relating to detection of wireless signals. In some embodiments, a method includes generating an autocorrelation result for a training field in a received wireless message, generating differentiation information based on the autocorrelation result, and determining that one or more signal recognition criteria are met. In some embodiments, the signal recognition criteria include a first criterion that a first peak in the differentiation information satisfies a first threshold for at least a first time interval. In some embodiments, the signal recognition criteria include one or more additional criteria, including a second criterion that a second peak in the differentiation information satisfies a second threshold for at least a second time interval, wherein the first and second peaks have different polarities and/or a third criterion that the first peak corresponds to an autocorrelation result value that is below a particular autocorrelation threshold.

公开(公告)号：US20160374042A1

公开(公告)日：2016-12-22

申请号：US14740425

申请日：2015-06-16

Applicant: NATIONAL INSTRUMENTS CORPORATION

Inventor： Max Koehler ,  Achim Nahler ,  Amal Ekbal

IPC: H04W56/00

CPC classification number: H04W56/0035 ,  H04L27/2663 ,  H04L27/2671 ,  H04L27/2675 ,  H04L27/2688

Abstract: Techniques are disclosed relating to detection of wireless signals. In some embodiments, a method includes generating an autocorrelation result for a training field in a received wireless message, generating differentiation information based on the autocorrelation result, and determining that one or more signal recognition criteria are met. In some embodiments, the signal recognition criteria include a first criterion that a first peak in the differentiation information satisfies a first threshold for at least a first time interval. In some embodiments, the signal recognition criteria include one or more additional criteria, including a second criterion that a second peak in the differentiation information satisfies a second threshold for at least a second time interval, wherein the first and second peaks have different polarities and/or a third criterion that the first peak corresponds to an autocorrelation result value that is below a particular autocorrelation threshold.

Abstract translation: 公开了关于无线信号的检测的技术。 在一些实施例中，一种方法包括为所接收的无线消息中的训练场生成自相关结果，基于自相关结果生成差分信息，以及确定满足一个或多个信号识别标准。 在一些实施例中，信号识别标准包括第一标准，所述第一标准是所述微分信息中的第一峰满足至少第一时间间隔的第一阈值。 在一些实施例中，信号识别标准包括一个或多个附加标准，包括第二标准，其中所述微分信息中的第二峰满足至少第二时间间隔的第二阈值，其中所述第一和第二峰值具有不同的极性和/ 或第三标准，第一峰值对应于低于特定自相关阈值的自相关结果值。