Abstract: A device and a method for communicating with a link partner device. The device may include a fragmentation unit configured to fragment a packet into multiple fragments if a size of the packet is greater than a maximum fragment size, a packet control header unit configured to generate a packet control header for a packet or each fragment of the packet, and a transceiver configured to send the packet or the fragments of the packet with the packet control header via a connection between the device and the link partner device. The packet control header may include a data flow control field for congestion control between the device and the link partner device, the data flow control field including a configuration parameter indicative of a flow control capability being supported by the device.

Abstract: A fully functional spectrum analyzer is integrated into an outdoor communications unit of a point-to-point communication system. The spectrum analyzer of the outdoor unit provides for remote spectral diagnostics for network planning and wideband operation and is operable to capture signals outside of the signal bandwidth. With the spectrum analyzer integrated into the outdoor unit, accessing spectral diagnostic information is conducted without having to disrupt the normal operation of the communications network.

Abstract: A point-to-point radio system includes a phased array antenna system and circuitry to couple the phased array to a diplexer for steering nulls of the phased array to suppress interference.

Abstract: Methods and systems are provided for telephone line access with crosstalk stability. A transceiver device coupled to a telephone line, bundled with other telephone lines in a telephone cable, may determine when another transceiver device connected to the telephone cable is estimating signal to noise ratio on another telephone line in the telephone cable, and may control communications over on the telephone line, the controlling including forcing a transmission on the telephone line based on the estimation of signal to noise ratio by the other transceiver device. The transmission may be forced on the telephone line when there is no data to send on the telephone line at a time when the other transceiver device estimates the signal to noise ratio. The forced transmission may be generated by modulating sub-carriers using a pseudo-random sequence generated with an initial seed different from initial seeds used by other transceiver devices.

Abstract: Methods and systems are provided for telephone line access with crosstalk mitigation. Electronic equipment located at a first location may include a plurality of first transceiver devices, with each first transceiver device configured for coupling to a respective one of a plurality of telephone lines bundled together in a same telephone cable, to connect to a respective one of a plurality of second transceiver devices at a second location. Each first transceiver device controls communication over the respective telephone line, with controlling including assigning separate time slots for uplink communication and downline communication; and coordinating communication with other ones of the plurality of first transceiver devices, with the coordinating including aligning use of the time slots. Each transceiver device may include a coupling circuitry to connect to the respective telephone line, an analog front end; and a controller that controls communications over the telephone line.

Abstract: Systems and methods are provided for optimizing power consumption for power line communication (PLC). An example system may include a coupler that connects the system to a power line; an analog front end (AFE) for handling communications over the power line via the coupler; and a processor for controlling power consumption of the AFE. The processor may determine information regarding one or more control parameters of the analog front end (AFE), the information relating to powerline communications (PLC) over the power line; and based on the information, sets or adjusts the one or more control parameters of the analog front end (AFE), to control power consumption of the analog front end (AFE) during the powerline communications (PLC) over the power line. The analog front end (AFE) may then transmit or receive data over the power line using powerline communications (PLC), based on the one or more control parameters.

Abstract: In the subject system, a receiver includes a feed forward circuit, a phase recovery circuit, and a feedback circuit. The feed forward circuit compensates for near reflections and provides an input to the phase recovery circuit and the feedback circuit. The phase recovery circuit performs phase recovery and provides phase recovery information to the feedback circuit. The feedback circuit adjusts and/or corrects a received symbol based at least in part on the received phase recovery information.

Abstract: The present disclosure includes systems and techniques relating to power line communications (PLC) systems and apparatus. In some implementations, a method includes determining information regarding a potential data rate to be used with a powerline communications (PLC) channel, reducing a bias current or voltage of an analog front end of a PLC transceiver based on the determined information to reduce power consumption of the analog front end of the PLC transceiver, and transmitting or receiving data over the PLC channel with the reduced bias current or voltage of the analog front end of the PLC transceiver.

Abstract: The present disclosure includes systems and techniques relating to wired communication channels, such as telephone lines in a bundled telephone cable. In some implementations, a system includes telephone lines bundled together, electronic equipment at a first location includes a first transceiver device for each of the telephone lines, where each first transceiver device at the first location is configured to coordinate transmissions over a respective telephone line coupled with the first transceiver device; and second transceiver devices coupled respectively with the telephone lines at second locations, such that each second transceiver device is respectively paired with a first transceiver device at the first location; each pair of the first and second transceiver devices is configured to force transmission on a telephone line connecting the pair when another pair of the first and second transceiver devices estimates a signal to noise ratio on the telephone line connecting the other pair.

Abstract: The present disclosure is directed to a modular and scalable front-end architecture for a massive MIMO communication device, such as a base station. The front-end architecture can allow for the number of antennas at the communication device to be increased or decreased in a simple and cost efficient manner. The front-end architecture can also allow for the number of data streams that can be transmitted and/or received by the communication device to be increased or decreased in a simple and cost efficient manner.

Abstract: A transceiver is disclosed which includes a transmitter and a receiver. The transmitter provides an impairment measurement signal, which is substantially similar to a transmitted communication signal except for a possible difference in phase and/or a magnitude, to the receiver. An envelope detector within the receiver provides an envelope of the impairment measurement signal to the transmitter. The transmitter determines sets of one or more filtering coefficients using the envelope of the impairment measurement signal and adjusts phases or magnitudes and/or phases of a sequences of bits used to generate the transmitted communication signal in accordance with the sets of one or more filtering coefficients to compensate for the unwanted distortion and/or the unwanted interference present within the transmitted communication signal.

Abstract: Systems and methods enable a plurality of modems in a microwave network receive a plurality of frames from a previous one of the plurality of modems and detect an error frame within the plurality of frames. The plurality of modems can be further configured to send a retransmission request to the previous modem upon detection of the error frame and transmit a dummy frame in place of the error frame to a next one of the plurality of modems.

Abstract: A communication system includes a conversion module configured to convert a signal between a radio frequency baseband (RF-BB) and an intermediate frequency (IF). At least one RF front-end module converts the signal between the IF and a radio frequency (RF). The RF front-end module is configured as an RF phased array and includes a coaxial interconnect configured to connect the conversion module with the RF front-end module. The signal is transmitted between the conversion module and the RF-front end module via the coaxial interconnect. At least one RF front-end module includes an active front-end (AFE) configured to allow the signal to be transmitted via the coaxial interconnect while minimizing any deterioration of the signal.