Patent · US Active

Multi-band crest factor reduction

US9215120B2 · kind B2 · utility

5Cited by

7References

18Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Leonard Rexberg · Lindenstraße, SE
Håkan Malmqvist · Stuvsta-Snättringe, SE

Key dates

Filing date	Dec 21, 2011
Grant date	Dec 15, 2015
Priority date	—
Expiry date	Jun 26, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH04B1/005
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

Clipping a widely-separated, multi-carrier signal is effectively performed without having to use a high sampling speed. Clipping is performed in a first stage at a combined signal level, but with a predetermined carrier separation of at least twice the channel bandwidth (2CBW), followed by repositioning the carriers at baseband zero frequency. After clipping, carriers are placed at their respective center frequencies with full carrier separation reintroduced in a second stage. Iterative clipping stages smooth out signal reshaping and re-settled amplitudes for combined carriers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.