公开(公告)号：US20140148114A1

公开(公告)日：2014-05-29

申请号：US14085236

申请日：2013-11-20

Applicant: Aviacomm Inc.

Inventor： Tao Li ,  Hans Wang ,  Binglei Zhang ,  Shih Hsiung Mo

IPC: H04B15/02

CPC classification number: H04B1/30 ,  H04B2001/305

Abstract: One embodiment of the present invention provides a system for performing DC offset cancellation for a wireless receiver that includes one or more amplification stages between a demodulator and a baseband digital signal processor (DSP). During operation, the system calibrates values of static DC offset associated with a plurality of gain settings for at least one amplification stage, stores the calibrated DC offset values in a lookup table, receives a current gain setting for the amplification stage, maps a DC offset value from the lookup table based on the current gain setting, and cancels static DC offset for the amplification stage using the mapped DC offset value.

Abstract translation: 本发明的一个实施例提供了一种用于对包括解调器和基带数字信号处理器（DSP）之间的一个或多个放大级的无线接收机执行DC偏移消除的系统。 在操作期间，系统校准与至少一个放大级的多个增益设置相关联的静态DC偏移的值，将校准的DC偏移值存储在查找表中，接收用于放大级的当前增益设置，映射DC偏移 基于当前增益设置的查找表的值，并且使用映射的DC偏移值来取消放大级的静态DC偏移。

公开(公告)号：US20140099083A1

公开(公告)日：2014-04-10

申请号：US13645254

申请日：2012-10-04

Applicant: AVIACOMM INC.

Inventor： Tao Li ,  Hans Wang ,  Shih Hsiung Mo ,  Binglei Zhang

IPC: H04N5/92 ,  H04N5/78

CPC classification number: H04N5/921 ,  H04N5/44 ,  H04N5/50 ,  H04N5/775 ,  H04N5/7755 ,  H04N5/781

Abstract: One embodiment of the present invention provides a signal-recording system. During operation, the system receives a wideband multi-channel radio frequency (RF) signal, which includes a plurality of single-channel RF signals modulated at different carrier frequencies. The system down-converts the received wideband multi-channel RF signal to baseband, and records the down-converted signal.

Abstract translation: 本发明的一个实施例提供一种信号记录系统。 在操作期间，系统接收宽带多信道射频（RF）信号，其包括以不同载波频率调制的多个单信道RF信号。 系统将接收到的宽带多频道RF信号下转换为基带，并记录下变频信号。