Patent ID: 6507573
Filing Date: 2003-01-14
Classification: H04B

Abstract:
A data transmission method for two-way communication using low-voltage systems linked to a higher order telecommunication network, wherein data transmission within the low-voltage system takes place at a high-frequency range of up to 30 MHZ using band spreading of data signals and a transmit level below the specified interference or noise voltage limit of line and radio disturbances characteristics, in that said band-spread data is given a direction coding to specify a logical direction within the low-voltage system to enable multiple-user operation using different sequences of a family of pseudo-random numbers, and in that a correlator identifies in attenuation-dependent intervals by means of the given sequences the binary data sequences, being user-specific spread and direction-specific coded, within the low-voltage system, regenerates the binary data sequences and assigns new direction codes to them for forwarding the signals.