Abstract: A device for simulating a data transmission via a data transmission network, especially in a motor vehicle, for evaluating the transmission quality via the network as a function of an interference environment and of a channel characteristic of the network.

Abstract: A supply line structure for the energy supply of electrical components of a motor vehicle, and for transmitting information between at least a portion of the components. To reduce the interference susceptibility of the supply line structure in a Powerline Communications, and at the same time to continue to be able to ensure the energy supply of the electrical components via the supply line structure, it is provided that the supply line structure have separate supply lines, electrically isolated from the vehicle body, as return lines from the components to at least one energy source of the motor vehicle. The supply lines of the supply line structure preferably take the form of coaxial lines or twisted pair lines.

Abstract: A supply line structure for supplying energy to electrical components of a motor vehicle, and for the transmission of information between at least a portion of the components (so-called Powerline Communications). To improve the channel characteristics of the information transmission via the supply line structure, it is proposed that the supply lines be arranged in a star configuration having at least one star point, the or each star point an impedance which corresponds to the characteristic impedance of the individual supply line branches running into it. To that end, it is proposed in particular that at the or each star point, an additional series resistor, frequency-dependent for frequencies below 100 MHz, be disposed in the incoming supply line branches. The series resistor is preferably configured as a ferrite sleeve.

Abstract: A method and a computer program for modeling an interfering pulse in a vehicle electric system are described. Previous approaches for synthesizing such interfering pulses have proven to be insufficiently realistic for the simulation of certain application cases. An interfering pulse is therefore modeled by random determination of the parameters of the parameter set representing the interfering pulse to be modeled on the basis of the density functions belonging to the parameters and by substituting the parameters thus obtained into a predetermined mathematical function. The interfering pulse modeled in this way is also a suitable starting point for modeling a pulse pattern, i.e., a random sequence of individually spaced interfering pulses and a pulse interferer scenario, i.e., a random sequence of individually spaced pulse patterns.

Abstract: A transmitter/receiver device for a motor vehicle component connected to a communications network, and includes at least one transmitter unit for transmitting data over the communications network, and at least one receiver unit for receiving data over the communications network. The communications network is used for transmitting data between the component and further components connected to the communications network. To ensure a reliable, efficient, and interference-resistant communication between the different components within the motor vehicle, the transmitter/receiver device contains a plurality of transmitter units, each transmitter unit providing at least one separate channel for transmitting data over the communications network; and/or that the transmitter/receiver device contain a plurality of receiver units, each receiver unit providing at least one separate channel for receiving data over the communications network.

Abstract: A supply line structure for supplying energy to the electrical components of an automotive vehicle and for transmitting information between at least some of the electrical components, the supply lines being disposed, in particular in a star structure having at least one star point; in order to be able to transmit high supply currents, the supply line structure is configured in such a way that at least a part of the supply lines includes a coaxial arrangement of a plurality of outer litz wires about a central litz wire.

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.

Abstract: It is a known fact that even information signals in the kilohertz and megahertz range can be transmitted via the bus systems of power transmission networks. The invention provides a method and a system for improving the transmission behavior by feeding the signals not to the bus of the power supply but at the end of an outgoing line or a bus bar trunking system facing away from the power feed. The connection to the telecommunication system is made via a PLC bus line (10), said bus line (10) being connected to the bus bar trunking systems/outgoing lines (2, 2?, . . . ) via PLC bus elements (12, 12?, . . . ).

Abstract: A method and a device for conditioning electric installations in buildings for the rapid transmission of data produces symmetrical transmissions paths, along which high frequency signals can be transmitted with substantially no interference, using low-level emission. By introducing an inductance coil into the neutral conductor, as closely as possible to the earth point of the building, the conductor becomes insulated for high frequencies whereas the remaining conductors constitute the high-frequency earth. The high-frequency communication signals are transmitted between the neutral conductor and the protective conductor. This produces transmission channels with relatively good symmetry and negligible interference, which permit a significantly improved exploitation of resources.

Abstract: A supply line structure for supplying energy to the electrical components of an automotive vehicle and for transmitting information between at least some of the electrical components, the supply lines being disposed, in particular in a star structure having at least one star point; in order to be able to transmit high supply currents, the supply line structure is configured in such a way that at least a part of the supply lines includes a coaxial arrangement of a plurality of outer litz wires about a central litz wire.

Abstract: A transmitter/receiver device for a motor vehicle component connected to a communications network, and includes at least one transmitter unit for transmitting data over the communications network, and at least one receiver unit for receiving data over the communications network. The communications network is used for transmitting data between the component and further components connected to the communications network. To ensure a reliable, efficient, and interference-resistant communication between the different components within the motor vehicle, the transmitter/receiver device contains a plurality of transmitter units, each transmitter unit providing at least one separate channel for transmitting data over the communications network; and/or that the transmitter/receiver device contain a plurality of receiver units, each receiver unit providing at least one separate channel for receiving data over the communications network.

Abstract: A method and a computer program for modeling an interfering pulse in a vehicle electric system are described. Previous approaches for synthesizing such interfering pulses have proven to be insufficiently realistic for the simulation of certain application cases. An interfering pulse is therefore modeled by random determination of the parameters of the parameter set representing the interfering pulse to be modeled on the basis of the density functions belonging to the parameters and by substituting the parameters thus obtained into a predetermined mathematical function. The interfering pulse modeled in this way is also a suitable starting point for modeling a pulse pattern, i.e., a random sequence of individually spaced interfering pulses and a pulse interferer scenario, i.e., a random sequence of individually spaced pulse patterns.

Abstract: A device for simulating a data transmission via a data transmission network, especially in a motor vehicle, for evaluating the transmission quality via the network as a function of an interference environment and of a channel characteristic of the network.

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.

Abstract: It is a known fact that even information signals in the kilohertz and megahertz range can be transmitted via the bus systems of power transmission networks. The invention provides a method and a system for improving the transmission behavior by feeding the signals not to the bus of the power supply but at the end of an outgoing line or a bus bar trunking system facing away from the power feed. The connection to the telecommunication system is made via a PLC bus line (10), said bus line (10) being connected to the bus bar trunking systems/outgoing lines (2, 2′, . . . ) via PLC bus elements (12, 12′, . . . ).

Abstract: A supply line structure for supplying energy to electrical components of a motor vehicle, and for the transmission of information between at least a portion of the components (so-called Powerline Communications). To improve the channel characteristics of the information transmission via the supply line structure, it is proposed that the supply lines be arranged in a star configuration having at least one star point, the or each star point an impedance which corresponds to the characteristic impedance of the individual supply line branches running into it. To that end, it is proposed in particular that at the or each star point, an additional series resistor, frequency-dependent for frequencies below 100 MHz, be disposed in the incoming supply line branches. The series resistor is preferably configured as a ferrite sleeve.

Abstract: A supply line structure for the energy supply of electrical components of a motor vehicle, and for transmitting information between at least a portion of the components. To reduce the interference susceptibility of the supply line structure in a Powerline Communications, and at the same time to continue to be able to ensure the energy supply of the electrical components via the supply line structure, it is provided that the supply line structure have separate supply lines, electrically isolated from the vehicle body, as return lines from the components to at least one energy source of the motor vehicle. The supply lines of the supply line structure preferably take the form of coaxial lines or twisted pair lines.

Abstract: A receiving circuit for an interference-suppressing communications system having a narrow-band conventional message modulation and additional pseudo-noise phase shift keying (PN-PSK), has a pseudo-random generator whose pseudo-random sequence is identical to the pseudo-random sequence provided by the system transmitter. The pseudo-random generator actuates a phase-shift keying element to cancel the phase shift modulation produced at the transmitter. A matched filter or correlation network for correlation of the pseudo-random sequence at the receiver with the pseudo-random sequence contained in the received signal is provided. The message modulation impairs the function of the matched filter or the correlation network. The degrading influence of message modulation is to be eliminated, at least, reduced.