Abstract: A method for data communication between a single-carrier system is provided, wherein a received single-carrier signal is spectrally scanned by the multi-carrier system which decides upon received data according thereto and/or simulates a single-carrier signal with its own carriers.

Abstract: The invention relates to a method for reducing signaling overhead in a multicarrier system with dynamic bit allocation per subcarrier and to a corresponding transmitter/receiver device, wherein an established bit allocation table (BAT) that is provided with an index (I) is stored in a BAT storage device (LUT). In order to reduce signaling overhead, only the corresponding index (I)of an existing bit allocation table is transmitted (S6).

Abstract: A method and apparatus are provided for operating a transmission amplifier, particularly a mobile communications terminal, with the transmission amplifier being fed with a supply voltage and with any nonlinearity of the transmission amplifier being substantially compensated for via a predistortion unit for data values in an input data stream, wherein, at least at the start of transmission operation or after a considerable change in the operating parameters, the transmission amplifier is operated with a supply voltage which is of such a magnitude that the transmission amplifier operates in the linear region, and the supply voltage for the transmission amplifier is reduced to the extent to which a quality factor for the compensation for the nonlinearity of the transmission amplifier is increased by the predistortion unit.

Abstract: The invention relates to a method and device for improving, on the receive side, the transmission quality (residual/bit error rate) of a data transmission system, which is based on orthogonal frequency division multiplexing (OFDM) technology and which is negatively influenced by narrow-band harmonic interference signals. The invention takes into account two technical measures. In one technical measure, a received OFDM symbol is processed by means of a cyclic rotation of the OFDM receive symbol and of a subsequent Nyquist windowing in the time domain whereby leading to a reduction of the interference spectrum outside of the sub-carrier bandwidth. In the other technical measure, a channel estimation of the channel transmission function on the sub-carrier level is effected in parallel with the first technical measure, and the signal-to-noise ratio is calculated or estimated by estimating the interference power on the sub-carrier level.

Abstract: Method for avoiding communication collisions between co-existing PLC systems on using a physical transmission medium common to all PLC systems and arrangement for carrying out said method

Abstract: The invention relates to a method for rapidly synchronizing communication stations belonging to mutually independent PLC networks without reducing the user data rate. According to said method, the respective communication stations transmit or receive basic information at respectively the same time with regard to a cycle of the network frequency of each PLC network that is assigned to the respective communication station. The information is respectively transmitted with the same regularity with regard to a cycle sequence of the network frequency of each PLC network that is assigned to the respective communication station.