Blind selected mapping techniques for crest factor reduction of forward link CDMA signals
US7535950B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2005 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | Sep 6, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70706
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed are apparatus that implement blind selected mapping techniques that provide for crest factor reduction of forward link CDMA signals. Communication signals are processed using a mathematical algorithm that selectively maps a summed communication signal in a frame to another summed communication signal which has a smaller peak-to-average power ratio. The reduced dynamic range communication signal is amplified and transmitted to a receiver. At the receiver, the reduced power communication signal is processed using a mathematical algorithm that detects the selected mapping index used in the transmitter and converts the received signals into the original communication signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.