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Method for transmitting data via the lines of a power supply system

  • US 4,809,296 A
  • Filed: 02/11/1987
  • Issued: 02/28/1989
  • Est. Priority Date: 02/27/1986
  • Status: Expired due to Fees
First Claim
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1. Method for transmitting data via the lines of a power supply system, particularly at low- and medium-voltage level, comprising the following steps:

  • encoding data to be transmitted into the form of symbols (A, . . . , F) by applying a forward error correction code;

    duplicating each one of said symbols (A, . . . F) a given number of times;

    rearranging said duplicated symbols (A, . . . F) so that symbols previously located directly adjacently to each other are then a far distance from each other;

    combining said rearranged symbols into blocks so that each symbol is at least in two different blocks;

    transmitting said blocks by means of different carrier frequencies in order to reduce the error rate during transmission;

    wherein the different carrier frequencies are modulated by means of phase shift keying.

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