System and method for cancelling the extra interference created during position location in a CDMA cellular system
US6298050A · kind A · utility
63Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1998 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | Nov 25, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/288
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Systems and methods for cancelling interference in received CDMA signals due to signals of users involved in position location in the received signals which have been digitized to form a composite digitized baseband signal which would otherwise interfere with the detection of other user's data streams. The particular user's signals are detected, and an estimate of the air interface for that user is made. The user's signals are then passed through a model of the air interface, and the resulting output is subtracted from the composite digitized baseband signal, thereby removing interference due to that user's signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.