公开(公告)号：US20220209803A1

公开(公告)日：2022-06-30

申请号：US17653980

申请日：2022-03-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hao Wang ,  Jianping Zhong ,  Lei Wang

IPC: H04B1/10 ,  H04B1/04

Abstract: A PIM cancellation apparatus includes: a first obtaining unit, configured to obtain digital signals of N transmit channels; a second obtaining unit, configured to obtain receive signals; and a PIM simulation unit, configured to obtain N PIM cancellation signals based on the digital signals of the N transmit channels, where the PIM simulation unit includes a first linear module performing first filtering and first linear superposition on the digital signals of the N transmit channels to obtain a first linear superposition result, a non-linear module performing non-linear processing on the first linear superposition result to obtain a non-linear processing result, and each filter in a second linear module performing linear processing on each corresponding non-linear processing result to determine one PIM cancellation signal, to obtain the N PIM cancellation signals; and a cancellation unit, configured to obtain N cancellation result signals.