Title:
PASSIVE INTERMODULATION (PIM) CANCELLATION METHOD AND APPARATUS, AND COMPUTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/093612
Kind Code:
A1
Abstract:
Embodiments of the present application provide a passive intermodulation (PIM) cancellation method and apparatus, and a computer device. The method comprises: receiving a downlink baseband signal from a baseband unit (BBU) (S110); receiving a first uplink baseband signal of a radio remote unit (RRU) (S120); performing digital intermediate frequency processing according to the downlink baseband signal to obtain a first downlink radio frequency signal (S130); performing passive intermodulation cancellation modeling according to the first downlink radio frequency signal and the first uplink baseband signal to obtain a signal to be offset (S140); determining a second uplink baseband signal corresponding to the first uplink baseband according to the signal to be offset, wherein the second uplink baseband signal represents a signal after the first uplink baseband signal is subjected to PIM elimination (S150); and sending the second uplink baseband signal to the BBU (S160).
Inventors:
TONG XUAN (CN)
Application Number:
PCT/CN2022/132567
Publication Date:
June 01, 2023
Filing Date:
November 17, 2022
Export Citation:
Assignee:
ZTE CORP (CN)
International Classes:
H04B1/525
Foreign References:
| CN106301417A | 2017-01-04 | |||
| CN103858355A | 2014-06-11 | |||
| US20200021323A1 | 2020-01-16 | |||
| US20210160887A1 | 2021-05-27 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
Download PDF: