Abstract: A digital-to-analog converter for converting digital values to an analog output signal includes a first converter section and a second converter section operating at different conversion rates. A first analog signal provided by the first converter section and a second analog signal provided by the second converter section are combined to obtain the analog output signal. The concept may be used in fields of DAC applications where the sample rate is much higher than the signal bandwidth. The limited signal bandwidth means that the maximum change between two neighboring samples is a small fraction of the whole DAC range. The first converter section may cover a large range of values, whereas for the second converter section a relatively small range of values may be sufficient.

Abstract: A chip arrangement may include: a first chip including a first contact, a second contact, and a redistribution structure electrically coupling the first contact to the second contact; a second chip including a contact; and a plurality of interconnects electrically coupled to the second contact of the first chip, wherein at least one interconnect of the plurality of interconnects electrically couples the second contact of the first chip to the contact of the second chip.

Abstract: A receiver includes a first amplifier and a second amplifier, a first mixer, a second mixer and a third mixer, a first baseband signal path and a second baseband signal path. A signal output of the first amplifier is coupled to a signal input of the first mixer and a signal input of the second mixer. A signal output of the second amplifier is coupled to a signal input of the third mixer. A signal output of the first mixer and a signal output of the third mixer are coupled to the first baseband signal path. A signal output of the second mixer is coupled to the second baseband signal path.

Abstract: A phase interpolator is provided. The phase interpolator includes a plurality of capacitors, a first input for a clock signal, a second input for a phase shift clock signal and an output. The phase interpolator is configured to provide an interpolated, modulated phase information signal by switching, dependent on a modulation information, a first number of the capacitors between the first input and the output and a second number of the capacitors between the second input and the output.

Abstract: A multi user receiver configured to receive a signal including multiple symbol streams assigned to various users is described. The multiple symbol streams include at least one first symbol stream assigned to a user of the multi user receiver and at least one second symbol stream assigned to another user, wherein a modulation alphabet applied for the at least one second symbol stream is unknown at the multi user receiver. The multi user receiver includes a symbol stream election unit configured to elect a symbol stream of the multiple symbol streams, an equalizer configured to provide an equalized symbol of the elected symbol stream, and a detector configured to generate a detected symbol from the equalized symbol on the basis of a constellation, wherein, if the second symbol stream is elected, the constellation is a mixed constellation including constellation points of at least two of multiple predefined modulation alphabets.

Abstract: An amplifier includes an amplifying stage configured to provide an amplifier output signal based on a combination of a received amplifying stage input signal and a received amplified version of the amplifying stage input signal.

Abstract: A method, system, and computer program product for managing noise in a noise reduction system, comprising: receiving a first signal at a first microphone; receiving a second signal at a second microphone; identifying noise estimation in the first signal and the second signal; identifying a transfer function of the noise reduction system using a ratio of a power spectral density of the second signal minus the noise estimation to a power spectral density of the first signal, wherein the noise estimation is removed from only the power spectral density of the second signal; and identifying a gain of the noise reduction system using the transfer function.

Abstract: A ROM memory circuit is disclosed having at least one electrical line, at least one keeper circuit electrically connected to the at least one electrical line, the keeper circuit including a first transistor, a terminal of the first transistor is driven by a dedicated control signal, wherein the dedicated control signal is configured to keep the voltage of the at least one electrical line at a first voltage.

Abstract: A transmission arrangement for modulating useful signals onto a carrier frequency signal has a frequency generator for generating the carrier frequency signal, a first modulation path for modulating a first useful signal onto the carrier frequency signal, and a second modulation path for modulating a second useful signal onto the carrier frequency signal. The first modulation path has a digital modulator for providing an amplitude signal and a Cartesian signal pair from the first useful signal and a Cartesian modulator for modulating the Cartesian signal pair onto the carrier frequency signal in order to provide an intermediate signal. The first modulation path is configured in such a manner that the amplitude signal is modulated onto the intermediate signal in order to provide an output signal.

Abstract: A cell transfer controller is described comprising a detector configured to detect radio cells available for a mobile terminal; a determiner configured to determine, for a first radio cell detected by the detector, a waiting period after which the radio cell is selectable by the cell transfer controller as a target cell for a cell transfer and a controller, configured to increase the length of the waiting period in case that during the waiting period, the detector detects a second radio cell which fulfills a predetermined criterion.

Abstract: A receiver circuit includes an estimation unit configured to estimate a noise power of a transmission channel, a calculation unit configured to calculate a decision variable based on the noise power, and a decision unit configured to make a ternary decision based on the decision variable.

Abstract: An integrated circuit, a memory device, a method of operating an integrated circuit and a method of designing an integrated circuit are provided. An integrated circuit comprises a plurality of logical elements and a bus carrying signals for said plurality of logical elements. The integrated circuit also comprises a routing unit having an input coupled to said bus and a plurality of outputs to route signals received at said input to at least one of said outputs. The integrated circuit also comprises a plurality of lines coupled to said plurality of outputs to conduct said signals from said routing unit to at least one of said plurality of logical elements, wherein at least one of said plurality of lines couples said routing unit to only one of said logical elements.

Abstract: A communication device is provided comprising a message generator configured to generate a message indicating that a mobile terminal is to determine a list of locations at which the mobile terminal has detected a need for a data communication with a mobile communication network and to transmit the determined list of locations to the mobile communication network and a transmitter configured to transmit the message.

Abstract: A signal generator for a transmitter or a receiver for transmitting or receiving RF-signals according to a given communication protocol includes an oscillator and a mismatch compensator. The oscillator is configured to provide a signal generator output signal having a signal generator output frequency and comprises a fine tuning circuit for providing a fine adjustment of the signal generator output frequency based on a fine tuning signal and a coarse tuning circuit for providing a course adjustment of the signal generator output frequency based on a coarse tuning signal.

Abstract: A transmitter comprises a baseband signal path, which is designed to provide a first baseband signal having an in-phase component and a quadrature component in a first mode of the transmitter and to provide a second baseband signal having an amplitude component and a phase component in a second mode of the transmitter; an oscillator circuit, which is designed to provide an oscillator signal, wherein the oscillator circuit is furthermore designed to provide the oscillator signal as an unmodulated signal in the first mode and to provide the oscillator signal as a modulated signal in the second mode, wherein a modulation of the oscillator signal in the second mode is based on the phase component of the second baseband signal; and a radio-frequency digital-to-analogue converter (RF-DAC), which is designed to receive the oscillator signal, the first baseband signal and the amplitude component of the second baseband signal, wherein the RF-DAC is furthermore designed to provide the vector-modulated RF output signal

Abstract: The method includes receiving a signal in a multiple carrier mobile communication system, the signal including at least two reference symbols of different types, determining a first channel estimate at a symbol position of a first reference symbol of a first type, determining a second channel estimate at a symbol position of a second reference symbol of a second type, and determining a quantity being a function of a cross-correlation between the first and second channel estimate.

Abstract: A communication system in which a communication service client terminal specifies a criterion, with further communication service client terminals which meet the criterion being able to be participants in a communication service which is provided. A server computer is configured to produce a list of the further communication service client units which meet the criterion and to transmit the list.

Abstract: A communication device is provided comprising a message generator configured to generate a message indicating that a mobile terminal should provide data from which information about the configuration of the mobile terminal for the reception of paging messages is derivable and a transmitter configured to transmit the message.

Abstract: A LTE compliant RF transceiver includes at least one transmit path and at least two receive paths. A switching arrangement connected between a transmit PLL synthesizer and at least one transmit path as well as between a receive PLL synthesizer and at least two receive paths allows the transmit PLL synthesizer to selectively be connected to the receive side of the transceiver as well as the receive PLL synthesizer to selectively be connected to the transmit side of the transceiver, thereby considerably increasing flexibility of the RF transceiver which enables both speed-up of handover procedures and power savings. A modem including the transceiver is also provided.

Abstract: A control circuit and a method for controlling an operation of a power amplifier core are provided. The power amplifier core is switchable between an envelope tracking operation mode and a non-envelope tracking operation mode. The control circuit is configured to provide a control signal for controlling the operation of the power amplifier core or to process an amplified signal received from the power amplifier core in dependence on the operation mode of the power amplifier core.