Abstract: Methods and apparatuses include operating a semiconductor component using a DC/DC-converter. The DC/DC-converter has its duty cycle controlled. A voltage at the semiconductor component is sensed for a voltage. The duty cycle is controlled or regulated so that the sensed voltage corresponds to a predetermined voltage. The predetermined voltage may be gradually increased until a difference between the sensed voltage and the predetermined voltage reaches a predetermined limit.

Abstract: A system is disclosed that may include an access point and a first wireless basic service set providing data transfer and a second wireless basic service set providing data transfer. The first and second wireless basic service sets are serviced by the access point concurrently and independent from the respective other wireless basic service set, wherein the access point may include a first MAC entity to process first data and a second MAC entity to process second data and wherein the first basic service set is configured to support a mix of contemporary wireless standards and legacy wireless standards and the second basic service set is configured to support only contemporary wireless standards and to operate at a greater data throughput than the first basic service set.

Abstract: A self-oscillating driver circuit includes a driver stage, a feedforward path which is coupled to an input of the driver stage, and a feedback path which couples an output of the driver stage to an input of the feedforward path. The feedforward path includes a feedforward filter which is designed as an active filter. In order to prevent an oscillatory state of the driver circuit at an unwanted frequency, it is proposed that an internal state variable of the feedforward filter be monitored and that the feedforward filter be reset if the value of the monitored internal state variable is outside a predefined range.

Abstract: A CODEC circuit for POTS system comprises a digital circuit for outputting a digital control signal having a first bit width, the digital control signal being indicative of a voltage to be applied to a POTS subscriber line pair. Further, the CODEC comprises a noise shaper coupled to an output of the digital circuit for generating a noise-shaped control signal and a digital-to-analog converter coupled to an output of the noise shaper, the input of the digital-to-analog converter having a second bit width being larger than 1 and smaller than the first bit width.

Abstract: One embodiment relates to a method of communicating data between a transmitter and a receiver of a communication system. In this method, a payload data stream is received from a network interface layer. The payload data stream includes data units eligible for retransmission and data units non-eligible for retransmission. These data units are grouped into containers, where a container is associated with a container identifier that distinguishes the container from other containers. The containers are grouped into data transmission units, where a data transmission unit includes at least one container along with redundancy information that facilitates error detection for that data transmission unit. The data transmission units are transmitted to the receiver as a transmission data stream. Other methods and systems are also disclosed.

Abstract: Embodiments related to retransmission in a communication system are described and depicted. In one embodiment, a retransmission entity repeats a transmission of a data transfer unit by the device after a predetermined number of other transmitted data transfer units has been transmitted. The retransmission entity may also determine whether a measure for a time period since the first transmission of the data transfer unit by the device has exceeded a predetermined threshold and to provide a final transmission of the data transfer unit based on the determining that the measure for the time period has exceeded the predetermined threshold.

Abstract: In an embodiment, vector training signals are received. Noise affecting the training signals is evaluated, and a noise indication is thus determined.

Abstract: Described herein are systems, apparatuses, and methods relating to a power-saving state or power-saving mode to facilitate clock synchronization between the two transceiver units and/or updating of DSL operation parameters during the power-saving state.

Abstract: A system and method for dynamic receive diversity allocation. A communications device comprises a first physical layer (PHY) unit, a second PHY unit, a first signal path coupled to a first antenna and to the first PHY unit, a switchable signal path coupled to a second antenna and switchably coupled to the first PHY unit and the second PHY unit, and a switch control unit coupled to the second antenna. The switch control unit dynamically generates a control signal used to switchably couple the second antenna to either the first PHY unit or the second PHY unit. The second antenna may be used to provided a needed transmit or receive antenna or an extra antenna for use in increasing diversity. Switching antennas reduces the total number of antennas and support hardware, such as digital processing hardware, for wireless communications standards having a high ratio of idle to busy time.

Abstract: A plurality of cells are combined into a macro cell. In a macro header of the macro cell a full numbering information of a first cell of the plurality of cells is stored. For further cells of the plurality of cells other than the first cell, a deviation information indicating a deviation of a numbering information of the respective further cell from the full numbering information of the first cell or one of the further cells is stored. In some embodiments, additionally the headers of the individual cells are incorporated in the macro header.

Abstract: One embodiment of the invention relates to a method of performance stabilization for multi-carrier DSL. A real signal-to-noise ratio is measured for each of a plurality of channels. A reference signal-to-noise ratio is calculated based on both the real signal-to-noise ratio and a virtual signal-to-noise ratio. Bit loading is set for at least one of the plurality of channels based on the reference signal-to-noise ratio. Other methods and systems are also disclosed.

Abstract: Described herein are implementations related to the generation of probe frames. In one implementation, a generated probe frame includes two symbols, where the two symbols are different. In one implementation, a first of the two symbols is a probe symbol and a second of the two symbols is a quiet symbol.

Abstract: Embodiments related to far-end cross-talk coefficient updating in vector transmission systems are depicted and described herein.

Abstract: Representative implementations of devices and techniques communication circuitry configured to communicate via a plurality of transmission channels, the communication circuitry includes crosstalk reduction circuitry to reduce crosstalk for a part of the plurality of transmission channels, the part of the plurality of transmission channels is selected from the plurality of transmission channels depending on an error threshold value.

Abstract: In accordance with an embodiment, a method for determining coupling coefficients between at least two communication links includes providing a respective pilot signal for at least one of the at least two communication links, adding a respective test signal to the respective pilot signal of at least one first link of the at least two communication links to form respective combined signals, and transmitting the respective combined signal.

Abstract: Protocols or methods are presented for encapsulating data from packets of different priorities and pre-emption techniques therefor using (N+M) byte frames for transmission in a communications system. The methods involve selectively suspending encapsulation of low-priority data packets to encapsulate a higher priority pre-empting data packet, and resuming encapsulation all or a portion of remaining data from a suspended low-priority data packet in a frame in which a pre-empting higher priority data packet is completed.

Abstract: An apparatus includes a transmitter configured to transmit data via a plurality of communication channels of a communication connection. The transmitter is further configured to transmit a same sequence for vector training on each of the communication channels. The sequences for at least two of the communication channels are shifted with respect to each other.

Abstract: Methods and devices related to channel estimation for a communication system comprising a plurality of communication connections are provided. For channel estimation, test sequences are used having three different elements, for example ?1, 0 and +1.

Abstract: The present disclosure relates to a communication system which, in accordance with one exemplary embodiment, a communication network for providing network services to at least one network device and at least one distribution point (DP) coupled to at least one network backbone. The at least one network device is located remote from the DP and coupled to the at least one network backbone via the at least one DP. The at least one DP is configured to receive a plurality of data units from the at least one network backbone in accordance with one or more communication protocols. A plurality of data frames, each having a header portion and a payload portion, are generated and each one of the received data units are mapped into one or more payload portions of the plurality of data frames. One or more of the plurality of data frames are mapped to a payload portion of at least one data transfer unit (DTU), which is then communicated to the at least one network device.

Abstract: Various methods, techniques and devices are disclosed which optimize an output power spectral density taking properties and changes of crosstalk reduction like crosstalk precompensation into account. The techniques disclosed may for example be employed in distribution points of a communication system.