Crest factor reduction for a multicarrier-signal with spectrally shaped single-carrier cancelation pulses

US8619903B2 · kind B2 · utility

Assignee

• KATHREIN-WERKE KG · DE

Inventors

• Georg Schmidt · Lindflur, DE
• Johannes Schlee · Ulm, DE

Key dates

• Filing date: Oct 14, 2010
• Grant date: Dec 31, 2013
• Expiry date: May 31, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L27/2624
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A method for crest factor reduction of a multi-carrier signal is disclosed. The multi-carrier signal comprises a plurality of single-carrier signals, each single-carrier signal having signal-specific spectral properties. The method comprises identifying a peak in the multi-carrier signal and a time of occurrence of the peak and generating a plurality of cancellation pulses depending on the time of occurrence of the peak. A particular cancellation pulse of the plurality of cancellation pulses is associated with a particular single-carrier signal and cancellation pulse-specific spectral properties of the particular cancellation pulse substantially match the signal-specific spectral properties of the associated particular single-carrier signal. The method further comprises combining the plurality of cancellation pulses to form a combined cancellation pulse and applying the combined cancellation pulse to the multi-carrier signal to reduce the peak. A corresponding circuit and corresponding computer program products useable during manufacture and operation are also disclosed.