Title:
PIM SELF-CANCELLATION METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/046677
Kind Code:
A1
Abstract:
A PIM self-cancellation device (300), comprising: a first obtaining unit (301) obtaining digital signals of N transmitting channels, N being an integer greater than 1; a second obtaining unit (302) obtaining receiving signals of N receiving channels; a PIM simulation unit (303) obtaining N PIM self-cancellation signals according to the digital signals of the N transmitting channels, the PIM simulation unit (303) comprising a first linear module (3031), a non-linear module (3032), and a second linear module (3033) which are connected in series, wherein the first linear module (3031) performs first filtering and first linear superposition on the digital signals of the N transmitting channels to obtain a first linear superposition result, the non-linear module (3032) performs non-linear processing on the first linear superposition result to obtain a non-linear processing result, and each filter in the second linear module (3033) performs linear processing on the corresponding non-linear processing result to determine a PIM self-cancellation signal, thereby obtaining N PIM self-cancellation signals; and a cancellation unit (304) obtains N self-cancellation result signals according to the receiving signals and the N PIM self-cancellation signals.
Inventors:
WANG HAO (CN)
ZHONG JIANPING (CN)
WANG LEI (CN)
ZHONG JIANPING (CN)
WANG LEI (CN)
Application Number:
PCT/CN2019/104892
Publication Date:
March 18, 2021
Filing Date:
September 09, 2019
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B1/52
Foreign References:
| CN104283580A | 2015-01-14 | |||
| CN107453782A | 2017-12-08 | |||
| CN108777585A | 2018-11-09 | |||
| CN103986482A | 2014-08-13 | |||
| US10038522B1 | 2018-07-31 | |||
| US20190052294A1 | 2019-02-14 |
Other References:
See also references of EP 4024717A4
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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