The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 28, 2003
Filed:
Feb. 11, 2002
China Academy of Telecommunications Technology, Beijing, CN;
Abstract
This invention discloses an interference cancellation method based on smart antenna, which can solve various interference in mobile communication systems such as multipath propagation, etc., while using smart antenna. The invention includes the steps of: with a beam forming matrix, beam forming the output signal of a receiver based on smart antenna, then getting a set of digital signals NR (m); canceling other users main path signal included in NR (m), then getting another set of digital signals NS (m), which only includes needed signals and all interference signals; searching in digital signal NS (m) and getting all multipath interference signals coming from other users; canceling other multipath interference signal in NS (m); and superposing the user main path and each multipath signal in phase coincidence, then getting a digital signal with interference canceled.