Aspects of the subject disclosure may include, for example, receiving a first optical signal from a first optical network via a first port of the wavelength converter, receiving a second optical signal from a second optical network via a second port of the wavelength converter, modulating the first optical signal with the second light signal to generate a third optical signal, eliminating the first light signal from the third optical signal to generate a fourth optical signal, and transmitting the fourth optical signal through the second optical network. The first optical signal can include a first digital signal modulated onto a first light signal of a first wavelength, the second optical signal can include a second light signal can include a second wavelength different from the first wavelength, and the fourth optical signal can include the first digital signal modulated onto the second light signal. Other embodiments are disclosed.

A redundancy system for a distributed antenna system is provided. The system includes a first communication link, a second communication link, a first communication node and a second communication node. The first communication link traverses first path. The second communication link traverses a second path. The second path is spatially separated from the first path. The first communication node is communicatively coupled to transmit the same signal through both the first communication link and the second communication link. The second communication node has a receiver system that is communicatively coupled to receive the signals transmitted through the first and second communication links. The receiver system is configured to synchronize delay and phase differences between the received signals and then combine the signals together to generate a single output.

A passive optical network system includes an optical line terminator (OLT) configured to detect signal strength and a phase of a burst-mode uplink signal from each of optical network units (ONUs) to control the ONUs so as to equalize signal strengths of signals received from the ONUs and configured to control the ONUs so as to adjust a phase of each of the signals received from the ONUs, and the ONUs are each configured to control signal strength and phase of an burst-mode uplink signal and transmit a resultant burst-mode uplink signal under control of the OLT.

The present invention discloses an apparatus and method for cancelling interference noise in an optical communication system. According to an embodiment of the present invention, an apparatus for cancelling interference noise in an optical communication system in accordance with an embodiment of the present invention comprising: a communication unit for receiving first signals including baseband signals and radio frequency tone signals from at least two subscriber terminals and for detecting a second signal in which the first signals are combined; and a control unit for extracting a first interference noise generated around the radio frequency tone signals from the second signal and for cancelling a second interference noise generated around baseband signals using the first interference noise from the second signal.

Distributing higher currents demanded by a power consuming load(s) exceeding overcurrent limits of a current limiter circuit for a power source in a power distribution system. The power distribution system receives and distributes power from the power source to a power consuming load(s). The power distribution circuit is configured to limit current demand on the power source to not exceed a designed source current threshold limit. The power distribution circuit includes an energy storage circuit. The power distribution circuit is configured to charge the energy storage circuit with current supplied by the power source. Current demanded by the power consuming load(s) exceeding the source current threshold limit of the power source is supplied by the energy storage circuit. Thus, limiting current of the power source while supplying higher currents demanded by power consuming load(s) exceeding the source current limits of the power source can both be accomplished.

A redundancy system for data transport in a Distributed Antenna System (DAS) includes a plurality of Digital Access Units (DAUs). Each of the plurality of DAUs is fed by a plurality of data streams and is operable to transport digital signals between others of the plurality of DAUs. The redundancy system also includes a plurality of Digital Distribution Units (DDUs). Each of the plurality of DDUs is in communication with each of the plurality of DAUs using cross connection communication paths. The redundancy system further includes a plurality of Digital Remote Units (DRUs). Each of the plurality of DRUs is in communication with each of the plurality of DDUs using cross connection communications paths.

An optical network communication system includes an optical hub, an optical distribution center, at least one fiber segment, and at least two end users. The optical hub includes an intelligent configuration unit configured to monitor and multiplex at least two different optical signals into a single multiplexed heterogeneous signal. The optical distribution center is configured to individually separate the at least two different optical signals from the multiplexed heterogeneous signal. The at least one fiber segment connects the optical hub and the optical distribution center, and is configured to receive the multiplexed heterogeneous signal from the optical hub and distribute the multiplexed heterogeneous signal to the optical distribution center. The at least two end users each include a downstream receiver configured to receive one of the respective separated optical signals from the optical distribution center.

An optical network communication system includes an optical hub, an optical distribution center, at least one fiber segment, and at least two end users. The optical hub includes an intelligent configuration unit configured to monitor and multiplex at least two different optical signals into a single multiplexed heterogeneous signal. The optical distribution center is configured to individually separate the at least two different optical signals from the multiplexed heterogeneous signal. The at least one fiber segment connects the optical hub and the optical distribution center, and is configured to receive the multiplexed heterogeneous signal from the optical hub and distribute the multiplexed heterogeneous signal to the optical distribution center. The at least two end users each include a downstream receiver configured to receive one of the respective separated optical signals from the optical distribution center.

According to an aspect of the inventive concept, there is provided a signal processing method performed in a distributed antenna system, includes extracting at least a part of sample data corresponding to an occupied frequency band from a digitized analog RF signal; and combining the extracted sample data.

Novel tools and techniques providing for the robust wireless distribution of communications signals from a provider to multiple customer premises. Certain embodiments comprise one or more modular communications apparatuses which are located near to customer premises. The modular communications apparatuses features an enclosure which is, at least in part, transparent to radio frequencies. A modular communications apparatus also typically includes one or more communications radios or transmitter/receiver devices within the enclosure. The apparatus also includes at least one and possibly more than one antenna located within the enclosure along with wire or cable-based signal output apparatus.