公开(公告)号：US20240080116A1

公开(公告)日：2024-03-07

申请号：US18505205

申请日：2023-11-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhi YANG ,  Qiang HUO ,  Yanqing ZHU ,  Zhiqiang ZOU

IPC: H04B17/345 ,  H04B17/20

CPC classification number: H04B17/345 ,  H04B17/204

Abstract: A method for determining a quantity of passive inter-modulation sources. A quantity of passive inter-modulation sources of a multi-antenna device is obtained. An interference signal that is excited by a sounding signal and that is from a passive inter-modulation source is received. Singular value decomposition is performed on a first matrix corresponding to the interference signal. A quantity of passive inter-modulation sources is determined based on a result of the singular value decomposition. In this way, the quantity of passive inter-modulation sources of the multi-antenna device is directly determined by performing operations including signal receiving and sending and calculation of the multi-antenna device, to implement convenient, accurate, and secure detection of information about the quantity of the passive inter-modulation sources of the multi-antenna device.