CDMA cellular communications with multicarrier signal processing
US5570350A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1994 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | Sep 30, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2601
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
According to the present invention, an improved CDMA receiver for receiving spread-spectrum-modulated signals is provided. In the improved receiver, a multicarrier signal processor is positioned. The multicarrier signal processor includes a controller for analyzing an incoming multicarrier signal. At least one signal modifier communicates with the controller, such that the controller directs signal modifier to attenuate at least one carrier signal which is not spread-spectrum-modulated. More particularly, the present invention provides an apparatus for attenuating carrier signals in a multicarrier signal which includes at least one spread-spectrum-modulated signal and other carrier signals. The apparatus comprises a receiver for receiving a multicarrier signal which includes at least one spread-spectrum-modulated signal and other carrier signals. A multicarrier signal processor communicates with the receiver, the multicarrier signal processor having a control portion with a threshold limit set for power levels beyond those of spread-spectrum-modulated signals. At least one signal modifier communicates with the controller, for modifying the carrier signals with power levels above th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.