Aspects of the subject disclosure may include, supplying an alternating voltage waveform to a winding coupled to a magnetic core of an inductive power supply to regulate an alternating magnetic flux in the magnetic core. The alternating voltage waveform can be generated by selectively enabling one or more switches coupled to a storage device. The subject disclosure may further include configuring the one or more switches according to a configuration during a portion of a period of the alternating voltage waveform, and measuring a characteristic of an alternating current flowing in a conductor coupled to the magnetic core during the portion of the period of the alternating voltage waveform. Other embodiments are disclosed.

A cable distribution plant is protected from noise where a modem housing includes a switching power supply and modem digital electronics, the switching power supply for receiving AC mains power from an AC supply via an EMI filter and the modem digital electronics for receiving a switching power supply output from the switching power supply via an LC filter for filtering noise at a switching power supply frequency wherein multiple switching noise filters communicate with respective modems at subscriber sites protect a head end from switching power supply harmonic noise otherwise aggregated by distribute nodes and passed to the head end.

A cable distribution plant is protected from noise where a modem housing includes a switching power supply and modem digital electronics, the switching power supply for receiving AC mains power from an AC supply via an EMI filter and the modem digital electronics for receiving a switching power supply output from the switching power supply via an LC filter for filtering noise at a switching power supply frequency wherein multiple switching noise filters communicate with respective modems at subscriber sites protect a head end from switching power supply harmonic noise otherwise aggregated by distribute nodes and passed to the head end.

As fiber networks are extended closer to the subscriber, 5G small cell, multi-dwelling units, and office buildings, in some applications Digital Subscriber Line (DSL) becomes an extension for the fiber network over the last 100 to 300 meters of twisted wire-pair telephone lines. Utilizing techniques such as bonding of coterminous twisted wire-pairs, increasing the bandwidth into the VHF spectrum, emerging 5.sup.th generation DSL technology is poised to deliver aggregate bandwidth approaching 10 Gb/s. Underpinning the capability to reach these speeds over twisted wire-pair, requires Vectored DSL to cancel Far-End crosstalk (FEXT); the dominant impairment to high-speed DSL. Improving on current Vectored DSL technology, both one-sided and two-sided, through utilization of Single-Ended Vectored DSL to cancel FEXT offers significant improvements to several aspects of deploying DSL at gigabit speeds.

As fiber networks are extended closer to the subscriber, 5G small cell, multi-dwelling units, and office buildings, in some applications Digital Subscriber Line (DSL) becomes an extension for the fiber network over the last 100 to 300 meters of twisted wire-pair telephone lines. Utilizing techniques such as bonding of coterminous twisted wire-pairs, increasing the bandwidth into the VHF spectrum, emerging 5.sup.th generation DSL technology is poised to deliver aggregate bandwidth approaching 10 Gb/s. Underpinning the capability to reach these speeds over twisted wire-pair, requires Vectored DSL to cancel Far-End crosstalk (FEXT); the dominant impairment to high-speed DSL. Improving on current Vectored DSL technology, both one-sided and two-sided, through utilization of Single-Ended Vectored DSL to cancel FEXT offers significant improvements to several aspects of deploying DSL at gigabit speeds.

A first physical layer device includes a first transmitter and a first receiver. The first transmitter transmits first data to a second physical layer device over a medium at a first line rate during a first transmit period. The first receiver is configured to not receive data during the first transmit period and an echo reflection period occurring after the first transmit period. The echo reflection period is based on a length of the medium between the first physical layer device and the second physical layer device. The first receiver is configured to, after the echo reflection period, receive second data from the second physical layer device over the medium at a second line rate that is less than the first line rate.

A first physical layer device includes a first transmitter and a first receiver. The first transmitter transmits first data to a second physical layer device over a medium at a first line rate during a first transmit period. The first receiver is configured to not receive data during the first transmit period and an echo reflection period occurring after the first transmit period. The echo reflection period is based on a length of the medium between the first physical layer device and the second physical layer device. The first receiver is configured to, after the echo reflection period, receive second data from the second physical layer device over the medium at a second line rate that is less than the first line rate.

A data and power communication cable that provides galvanic isolation between data-signal related circuitry and power-signal related circuitry present at both ends of the cable. The cable includes a first connector configured to mate with a first device to receive data and power signals therefrom; a first galvanic-isolating device configured to generate a galvanic-isolated data signal based on the data signal; a second galvanic-isolating device configured to generate a galvanic-isolated power signal based on the power signal; a second connector configured to mate with a second device to provide the galvanic-isolated data signal and the galvanic-isolated power signal thereto; a first set of communication mediums to route the data signal or the galvanic-isolated data signal from the first connector to the second connector; and a second set of communication mediums to route the power signal or the galvanic-isolated power signal from the first connector to the second connector.

A data and power communication cable that provides galvanic isolation between data-signal related circuitry and power-signal related circuitry present at both ends of the cable. The cable includes a first connector configured to mate with a first device to receive data and power signals therefrom; a first galvanic-isolating device configured to generate a galvanic-isolated data signal based on the data signal; a second galvanic-isolating device configured to generate a galvanic-isolated power signal based on the power signal; a second connector configured to mate with a second device to provide the galvanic-isolated data signal and the galvanic-isolated power signal thereto; a first set of communication mediums to route the data signal or the galvanic-isolated data signal from the first connector to the second connector; and a second set of communication mediums to route the power signal or the galvanic-isolated power signal from the first connector to the second connector.

An apparatus for pilot tone synchronization in point-to-multipoint (P2MP) communication is described, including a transceiver configured to send a downstream transmission including pilot tones to one or more customer premises equipments (CPEs) in a P2MP group. A method for pilot tone synchronization in point-to-multipoint (P2MP) communication is described, including sending a downstream transmission including pilot tones to one or more customer premises equipments (CPEs) in a P2MP group.