Method for evaluating the usability of a sub-carrier of a power-line signal

US8908491B2 · kind B2 · utility

Assignee

• Power Plus Communications AG · DE

Inventors

• Hans Ehrlich · Mannheim, DE
• Markus Rindchen · Osthofen, DE

Key dates

• Filing date: Jul 20, 2011
• Grant date: Dec 9, 2014
• Expiry date: Oct 21, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B2203/5495
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

The invention relates to a method for evaluating the usability of a sub-carrier of a BPL (broadband power-line) signal, in particular in order to avoid mutual influencing of the BPL signal and a further signal, wherein the BPL signal has a plurality of sub-carriers and one symbol can be transmitted in each of the sub-carriers. The method comprises the following steps: extracting a received value y[k] from a sub-carrier of a received BPL signal, rectifying the received value y[k] using an estimated transfer function Ĥ of the transmission channel, deciding on a symbol d[k] that is coded in the received value y[k], distorting the symbol d[k] using the estimated transfer function Ĥ of the transmission channel, calculating a difference between the received value y[k] and the processed signal d[k]·Ĥ and deciding on the usability of the sub-carrier on the basis of the difference y[k]−d[k]·Ĥ.