公开(公告)号：US09608679B2

公开(公告)日：2017-03-28

申请号：US14440297

申请日：2012-11-07

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Chow Loong Cheah ,  Kim Loy Lai ,  Kar Boon Oung ,  Moh Lim Sim ,  V. C. Prakash V K Chacko

IPC: H04B1/10 ,  H03D7/18 ,  H03D3/00

CPC classification number: H04B1/1027 ,  H03D3/002 ,  H03D7/18 ,  H03D2200/0088 ,  H04B1/109

Abstract: A very low intermediate frequency (VLIF) receiver and a method of controlling a VLIF receiver. The method comprises estimating energy levels in first and second signals and detecting interference from a first adjacent channel interferer based upon a difference in energy in the first and second signals. The first signal comprising a first on-channel portion and an adjacent channel portion and the second signal comprises an intermediate frequency translation of the first on-channel portion. The energy levels are estimated for corresponding time instances and the adjacent channel interferer is of the adjacent channel portion. The VLIF receiver is then controlled based upon the detected interference.

公开(公告)号：US20150295604A1

公开(公告)日：2015-10-15

申请号：US14440297

申请日：2012-11-07

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Chow Loong Cheah ,  Kim Loy Lai ,  Kar Boon Oung ,  Moh Lim Sim ,  V. C. Prakash V K Chacko

IPC: H04B1/10

CPC classification number: H04B1/1027 ,  H03D3/002 ,  H03D7/18 ,  H03D2200/0088 ,  H04B1/109

Abstract: A very low intermediate frequency (VLIF) receiver and a method of controlling a VLIF receiver. The method comprises estimating energy levels in first and second signals and detecting interference from a first adjacent channel interferer based upon a difference in energy in the first and second signals. The first signal comprising a first on-channel portion and an adjacent channel portion and the second signal comprises an intermediate frequency translation of the first on-channel portion. The energy levels are estimated for corresponding time instances and the adjacent channel interferer is of the adjacent channel portion. The VLIF receiver is then controlled based upon the detected interference.

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。 该方法包括基于第一和第二信号中的能量差来估计第一和第二信号中的能量水平并检测来自第一相邻信道干扰源的干扰。 第一信号包括第一通道部分和相邻通道部分，第二信号包括第一通道部分的中频转换。 对于相应的时间实例估计能级，并且相邻信道干扰源是相邻信道部分。 然后根据检测到的干扰来控制VLIF接收机。