公开(公告)号：US09042500B1

公开(公告)日：2015-05-26

申请号：US14109528

申请日：2013-12-17

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Yew Leong Wong ,  Chow Loong Cheah ,  Li Choo Chen ,  Yadunandana N Rao ,  Moh Lim Sim ,  Ondy Dharma Indra Sukma

IPC: H03D1/04 ,  H04B1/12

CPC classification number: H04B1/30 ,  H04B1/1036 ,  H04B2001/1045

Abstract: A very-low intermediate frequency (VLIF) receiver and a method of controlling a VLIF receiver. The method comprises receiving a first signal, the first signal including one or both of an on-channel signal portion and an adjacent channel interferer (ACI) portion; determining that the first signal includes a portion having a strength that is above a threshold; in response to determining that the first signal includes a portion having a strength that is above the threshold, estimating one or more IQ imbalance parameters for at least a portion of the first signal; and compensating for an IQ imbalance in at least the portion of the first signal using the one or more IQ imbalance parameters.

Abstract translation: 一种非常低的中频（VLIF）接收机和一种控制VLIF接收机的方法。 所述方法包括：接收第一信号，所述第一信号包括通道内信号部分和相邻信道干扰源（ACI）部分中的一个或两者; 确定所述第一信号包括具有高于阈值的强度的部分; 响应于确定所述第一信号包括具有高于所述阈值的强度的部分，估计所述第一信号的至少一部分的一个或多个IQ不平衡参数; 以及使用所述一个或多个IQ不平衡参数来补偿所述第一信号的至少所述部分中的IQ不平衡。