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:
Jun. 24, 2003
Filed:
Jun. 22, 1999
Hideto Suzuki, Tokyo, JP;
NEC Corporation, , JP;
Abstract
A multiuser interference canceler which is used in a DS-CDMA (direct sequence-code division multiple access) communication system and is capable of preventing reception quality from being degraded. In a serial multiuser interference canceler which has cascaded blocks each having an interference canceler units (ICUs) for generating interference replica signal, preliminary demodulators for measuring reception quality of the signals of the users in the received signal are provided. If the reception quality of output signals from the preceding block is more degraded than the reception quality measured by the preliminary demodulators, then each of the interference canceler units determines that the reception quality has been degraded by an interference cancellation process in the preceding block, and controls the interference canceler unit in the preceding block to turn off the outputting of the interference replica signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile