Crest factor reduction method and circuit for a multi-carrier signal

US8599961B2 · kind B2 · utility

Assignee

• KATREIN-Werke KG · DE

Inventors

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

Key dates

• Filing date: Oct 14, 2010
• Grant date: Dec 3, 2013
• Expiry date: Dec 17, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B7/0671
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A method for crest factor reduction of a multi-carrier signal is disclosed. The method comprises determining a plurality of signal values of a plurality of single-carrier signals prior to combining the plurality of single-carrier signals to form the multi-carrier signal. The method further comprises performing a joint potential peak detection on the plurality of signal values, producing a temporal position of a possible peak in the multi-carrier signal, generating a plurality of cancellation pulses, and injecting the plurality of cancellation pulses to the plurality of single-carrier signals at temporal injection positions which correspond to the temporal position of the possible peak in the multi-carrier signal. The single-carrier signals are then combined to form a crest factor reduced multi-carrier signal. A corresponding circuit and corresponding computer program product useable during manufacture and operation are also disclosed.