Method and device for transmitting data on at least one electrical power supply line

US7161985B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Klaus Dostert · Kaiserslautern, DE
• Norbert B. Elsner · Village of La Jolla, US
• Gerd Griepentrog · Gutenstetten, DE
• Reinhard Maier · Herzogenaurach, DE
• Wilfried Matthee · Salzgitter, DE

Key dates

• Filing date: Dec 6, 2001
• Grant date: Jan 9, 2007
• Expiry date: Jan 13, 2024

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B2203/5491
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

The orthogonal frequency division multiplexing (OFDM) method is well-known for transmitting data on electrical power supply lines. According to this method, the items of information to be transmitted are distributed among numerous carriers, and the composite signal of the modulated carrier signals is transmitted in the form of an OFDM block. Standard OFDM methods are, however, highly sensitive to strong periodic pulse jammers. According to the invention, the method is thus devised such that the OFDM blocks to be transmitted have a length of approximately 85% of the interval between two periodic disturbing pulses. The carrier interval accordingly results from the reciprocal duration of the OFDM blocks. The transmitted OFDM blocks are synchronized with pulse-shaped periodic jammers in such a manner that one block at a time is located between two disturbing pulses. The pulse-shaped jammers can be gated at the receiver. To this end, the inventive device comprises an appropriately designed transmitter (20) and an associated receiver (30).