公开(公告)号：US20130259109A1

公开(公告)日：2013-10-03

申请号：US13666457

申请日：2012-11-01

Applicant: BROADCOM CORPORATION

Inventor： Bin Liu ,  Taikun Cheng ,  Severine Catreux

IPC: H04B17/00

CPC classification number: H01Q1/243 ,  G01C21/26 ,  H03H7/40 ,  H04L25/03038 ,  H04L27/2647

Abstract: Disclosed are various embodiments providing processor configured to determine a received signal strength indication (RSSI) value for each of the plurality of channel taps. The processing circuitry identifies a maximum RSSI value among the RSSI values and may adjust a variable threshold range according to the maximum RSSI value. The RSSI value for each channel tap may be scaled according to a corresponding per tap noise power.

Abstract translation: 公开了提供处理器的各种实施例，其被配置为确定多个通道抽头中的每一个的接收信号强度指示（RSSI）值。 处理电路识别RSSI值中的最大RSSI值，并且可以根据最大RSSI值调整可变阈值范围。 每个通道抽头的RSSI值可以根据相应的每抽头噪声功率来缩放。

公开(公告)号：US20130143577A1

公开(公告)日：2013-06-06

申请号：US13680495

申请日：2012-11-19

Applicant: Broadcom Corporation

Inventor： Fu-Hsuan Chiu ,  Hongwei Kong ,  Chun-Hsuan Kuo ,  Severine Catreux ,  Oghenekome Oteri

IPC: H04W36/18

CPC classification number: H04W56/002 ,  H03M13/3723 ,  H03M13/3905 ,  H03M13/3972 ,  H04L1/005 ,  H04W36/18

Abstract: Various methods and systems are provided for frequency offset correction. In one example, among others, a method includes determining a phase estimation of a RF signal, rotating a sample of the RF signal based at least in part upon the phase estimation, and determining a channel estimation based upon the rotated sample. The channel estimation may be derotated based at least in part upon the phase estimation. In another example, a communication device includes a phase rotator configured to rotate RF signal samples based upon a rotation offset, a channel estimation filter configured to determine channel estimates, and a phase derotator configured to rotate the channel estimates based upon another rotation offset. Another example of a communication device includes a differential detector configured to determine conjugate multiply results, an averaging filter configured to sum the results, and a phase estimator configured to determine a phase estimation based upon the sum.

Abstract translation: 为频偏补偿提供了各种方法和系统。 在一个示例中，其中包括确定RF信号的相位估计，至少部分地基于相位估计来旋转RF信号的采样，以及基于旋转的采样来确定信道估计。 至少部分地基于相位估计可以消除信道估计。 在另一示例中，通信设备包括：相位旋转器，被配置为基于旋转偏移来旋转RF信号样本，被配置为确定信道估计的信道估计滤波器，以及被配置为基于另一个旋转偏移旋转信道估计的相位解旋器。 通信设备的另一个例子包括配置成确定共轭乘法结果的差分检测器，被配置为求和结果的平均滤波器以及被配置为基于总和确定相位估计的相位估计器。