The present disclosure discloses a communication apparatus including a receiver circuit and a transmitter circuit having a signal processing circuit and a DAC circuit having a primary conversion circuit and a first hybrid conversion circuit. The primary conversion circuit converts and transmits a transmission signal from the signal processing circuit to a signal transmission path. The first hybrid conversion circuit converts the transmission signal to a first receiver resistor to generate a voltage drop. The receiver circuit receives a first actual receiving signal through the signal transmission path and the first receiver resistor. The primary conversion circuit operates according to a first current including a first and a second part currents and the first hybrid conversion circuit operates according to a second current. The first part current does not change according to a resistive change. The second part current and the second current change according to the resistive change.

The present disclosure relates to multi-MAC controller and single PHY systems and methods. An example method may include transmitting, via a first device in a Data Over Cable Service Interface Specification (DOCSIS) network, a first block of data within a first time slot and at a first power level. The example method may also include transmitting, via a second device in the DOCSIS network, a second block of data within the first time slot and at a second power level, the second power level being based on an attenuation of the first network tap device associated with the first device, wherein the first power level is different from the second power level.

The present disclosure relates to multi-MAC controller and single PHY systems and methods. An example method may include transmitting, via a first device in a Data Over Cable Service Interface Specification (DOCSIS) network, a first block of data within a first time slot and at a first power level. The example method may also include transmitting, via a second device in the DOCSIS network, a second block of data within the first time slot and at a second power level, the second power level being based on an attenuation of the first network tap device associated with the first device, wherein the first power level is different from the second power level.

A method for communicating data between a vehicle and a ground system comprises receiving, by a vehicle bus multiplexer on the vehicle, the data via a plurality of vehicle data buses from an onboard system. The method further comprises multiplexing, by the vehicle bus multiplexer, the data into at least one data path of a multi-use power interface. Also, the method comprises transmitting, by the multi-use power interface via at least one data path, the data from the vehicle bus multiplexer to a ground bus multiplexer associated with the ground system. In addition, the method comprises demultiplexing, by the ground bus multiplexer, the data from at least one data path of the multi-use power interface into a plurality of ground data buses associated with the ground system. Further, the method comprises transmitting, by the ground bus multiplexer, the data via the plurality of ground data buses to the ground system.

Aspects of the subject disclosure may include, for example, a system for exchanging electrical signals and guided electromagnetic waves between customer premises equipment and service provider equipment to provide uplink and/or downlink communication services. Other embodiments are disclosed.

Aspects of the subject disclosure may include, for example, a system for exchanging electrical signals and guided electromagnetic waves between customer premises equipment and service provider equipment to provide uplink and/or downlink communication services. Other embodiments are disclosed.

Aspects of the subject disclosure may include, for example, a system for receiving first electromagnetic waves via a transmission medium without utilizing an electrical return path, and inducing second electromagnetic waves at an interface of the transmission medium without the electrical return path. In an embodiment, the first and second electromagnetic waves have a non-optical frequency range. Other embodiments are disclosed.

Aspects of the subject disclosure may include, for example, a system for receiving first electromagnetic waves via a transmission medium without utilizing an electrical return path, and inducing second electromagnetic waves at an interface of the transmission medium without the electrical return path. In an embodiment, the first and second electromagnetic waves have a non-optical frequency range. Other embodiments are disclosed.

The present disclosure discloses a communication apparatus including a receiver circuit and a transmitter circuit having a signal processing circuit and a DAC circuit having a primary conversion circuit and a first hybrid conversion circuit. The primary conversion circuit converts and transmits a transmission signal from the signal processing circuit to a signal transmission path. The first hybrid conversion circuit converts the transmission signal to a first receiver resistor to generate a voltage drop. The receiver circuit receives a first actual receiving signal through the signal transmission path and the first receiver resistor. The primary conversion circuit operates according to a first current including a first and a second part currents and the first hybrid conversion circuit operates according to a second current. The first part current does not change according to a resistive change. The second part current and the second current change according to the resistive change.

The present disclosure discloses a communication apparatus including a receiver circuit and a transmitter circuit having a signal processing circuit and a DAC circuit having a primary conversion circuit and a first hybrid conversion circuit. The primary conversion circuit converts and transmits a transmission signal from the signal processing circuit to a signal transmission path. The first hybrid conversion circuit converts the transmission signal to a first receiver resistor to generate a voltage drop. The receiver circuit receives a first actual receiving signal through the signal transmission path and the first receiver resistor. The primary conversion circuit operates according to a first current including a first and a second part currents and the first hybrid conversion circuit operates according to a second current. The first part current does not change according to a resistive change. The second part current and the second current change according to the resistive change.