Siemens Aktiengesellschaft

Siemens Mobility Gmbh

Wilfried Matthee

Reinhard Maier

Gerd Griepentrog

Klaus Dostert

Norbert Elsner

Andreas Steingröver

Hans-Jörg Mönnich

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 () and an associated receiver ().

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

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Salzgitter, Germany

Wilfried Matthee