Signal detection using a CDMA receiver
US6996158B2 · kind B2 · utility
5Cited by
15References
36Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2001 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Feb 14, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/0012
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A code division multiple access (CDMA) receiver detects the presence of differently formatted signals (e.g., global system for mobile communications (GSM) signals) by programming a CDMA searcher co-processor, which includes a digital filter, with tap weights that correlate with a known sequence within the differently formatted signals. If the tap weights correlate to a received signal, the receiver produces an indication that a differently formatted signal is present. Once differently formatted signals are detected, specific hardware and/or software may be implemented to receive and process the differently formatted signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.