Method for Optimizing Signals with Multiple Subcarriers

• US 20100067615A1
• Filed: 03/13/2008
• Published: 03/18/2010
• Est. Priority Date: 03/15/2007
• Status: Active Grant

• Current Assignee: RPX Corporation
• Original Assignee: Nokia Siemens Networks GmbH & Company KG (Nokia Corporation)
• Inventors: Jordan, Markus, Senst, Martin, Dörpinghaus, Meik, Faerber, Michael
• Granted Patent: US 8,442,148 B2
• Time in Patent Office: Days
• US Class Current: 375/295
• CPC Class Codes: H04L 27/2618 Reduction thereof using auxiliary subcarriers

Abstract

The invention relates to a method for coding data in a transmitted signal, wherein the transmitted signal comprises multiple subcarriers with orthogonal frequencies, the method comprising the step of modulating the signals corresponding to a given subset of the subcarriers of the transmitted signal in order to encode information and the step of modulating the signal corresponding to least one reserved subcarrier depending on at least one optimization criterion relating to a quality of the overall transmitted signal. In order to enhance the quality of the transmitted signal, the optimization criterion depends on at least one first quantity relating to a peak-to-average-power ratio of the transmitted signal and on at least one second quantity relating to an out-of-band power of the transmitted signal.

Claims

1-22. -22. (canceled)

23. A method for coding data in a transmitted signal having subcarriers with orthogonal frequencies, comprising:

modulating signals corresponding to a given subset of the subcarriers of the transmitted signal to encode information; and

modulating at least one signal corresponding to at least one reserved subcarrier depending on at least one optimization criterion relating to a quality of the transmitted signal and depending on at least one first quantity relating to a peak-to-average-power ratio of the transmitted signal and on at least one second quantity relating to an out-of-band power of the transmitted signal.