An optical network includes a transmitter portion configured to transmit a digitized stream of symbols over a digital optical link, a mapping unit disposed within the transmitter portion and configured to code the transmitted digitized stream of symbols with a mapping code prior to transmission over the digital optical link, a receiver portion configured to recover the coded stream of symbols from the digital optical link, and a demapping unit disposed within the receiver portion and configured to map the recovered coded stream of symbols into an uncoded digitized signal corresponding to the digitized stream of symbols at the transmitter portion prior to coding by the mapping unit.

An optical network includes a transmitter portion configured to transmit a digitized stream of symbols over a digital optical link, a mapping unit disposed within the transmitter portion and configured to code the transmitted digitized stream of symbols with a mapping code prior to transmission over the digital optical link, a receiver portion configured to recover the coded stream of symbols from the digital optical link, and a demapping unit disposed within the receiver portion and configured to map the recovered coded stream of symbols into an uncoded digitized signal corresponding to the digitized stream of symbols at the transmitter portion prior to coding by the mapping unit.

In one embodiment a distribution system includes customer premise equipment that is authenticated to a network that includes a cable modem termination system based upon a DOCSIS authentication. The customer premise equipment receives data from a supplicant device that is interconnected to the network through the customer premise equipment where the supplicant device is authenticated to the network based upon an 802.1X authentication.

In one embodiment a distribution system includes customer premise equipment that is authenticated to a network that includes a cable modem termination system based upon a DOCSIS authentication. The customer premise equipment receives data from a supplicant device that is interconnected to the network through the customer premise equipment where the supplicant device is authenticated to the network based upon an 802.1X authentication.

Techniques for allocating channel frequencies in remote physical device. The channel frequencies are sorted in a predefined order, wherein each channel frequency has a symbol rate. Further, the channel frequencies are grouped into one or more channel groups, wherein each channel group comprises one or more channel frequencies. The one or more channel groups are prioritized from highest priority to lowest priority. Further, the one or more channel frequencies are allocated starting from highest priority channel group to largest size window based on available slots in the largest size window and till a difference between last channel frequency and first channel frequency falls within frequency span limit of the largest size window. Further, prioritizing and allocating are repeated till remaining one or more channel frequencies of the one or more channel groups are allocated to next available windows or the next available windows are exhausted.

Techniques for allocating channel frequencies in remote physical device. The channel frequencies are sorted in a predefined order, wherein each channel frequency has a symbol rate. Further, the channel frequencies are grouped into one or more channel groups, wherein each channel group comprises one or more channel frequencies. The one or more channel groups are prioritized from highest priority to lowest priority. Further, the one or more channel frequencies are allocated starting from highest priority channel group to largest size window based on available slots in the largest size window and till a difference between last channel frequency and first channel frequency falls within frequency span limit of the largest size window. Further, prioritizing and allocating are repeated till remaining one or more channel frequencies of the one or more channel groups are allocated to next available windows or the next available windows are exhausted.

A system for out of band control for legacy set top boxes.

A system for out of band control for legacy set top boxes.

Present disclosure describes the techniques for regaining synchronization between the RPD and the PTP server, without resetting RPD, in the event of run time-phase jump experienced at RPD. To do so, said technique discloses identifying a run time phase jump event at a remote Physical device (RPD) and initiating an Upstream Channel Descriptor (UCD) refresh procedure to reconnect the RPD with Precision Time Protocol (PTP) server.

A radio-frequency amplifier for a cable network includes a forward amplifier configured to amplify a high frequency range of signals that are provided downstream to a cable receiver of the cable network and a return amplifier configured to amplify a low frequency range of signals that are provided upstream to a head end of the cable network. An out-of-band forward amplifier configured to amplify a digitally protected video signal having a frequency in a range between 70 MHz and 130 MHz that are provided downstream to the cable receiver of the cable network and a notch filter configured to reject the amplified digitally protected video signal having the frequency in the range between 70 MHz and 130 MHz from being amplified by the return amplifier.