Infineon Technologies Ag

Intel Corporation

Intel Mobile Communications Gmbh

Intel Deutschland Gmbh

Apple Inc.

Intel IP Corporation

Michael Speth

Tobias Scholand

Markus Hammes

Markus Jordan

Thomas Esch

Michael Madden

André Neubauer

Roland Hellfajer

Edgar Bolinth

Frank Huertgen

Biljana Badic

Rajarajan Balraj

Herbert R Dawid

Jan K Ellenbeck

Holger Neuhaus

Robert Denk

Britta Felbecker

Sven Dortmund

Jürgen Niederholz

Jean-Xavier Canonici

Dieter Brueckmann

Attila Bilgic

Admir Burnic

Peter Ascheuer

Norbert Neurohr

Cheng Yi

Sanjeev Tavathia

Armin Haeutle

Majid Boloorian

Umer Salim

Romeo Lopez Soto

Markus Schlamann

Biswajit Dey

Mihail Petrov

Giuseppe Lipuma

A wireless device includes a radio transceiver, and a digital transmitter configured to transmit, via the radio transceiver, a first data symbol, and to transmit, via the radio transceiver, a repetition of the first data symbol immediately after the first data symbol, where the first data symbol forms a cyclic prefix for the repetition of the first data symbol.

Methods and devices for communications in device-to-device networks

An equalizer includes: a channel estimator configured to generate a set of time-domain channel coefficients based on a receive signal; a frequency-domain transformer configured to generate a set of frequency-domain channel coefficients based on a frequency transform of the set of time-domain channel coefficients; an equalizer coefficient generator configured to generate a set of frequency-domain equalizer coefficients based on the set of frequency-domain channel coefficients; a time-domain transformer configured to generate a set of time-domain equalizer coefficients based on a time transform of the set of frequency-domain equalizer coefficients; and a filter configured to filter the receive signal based on a filter function that is based on the set of time-domain equalizer coefficients.

Equalizer and method for equalizing a receive signal

A communication terminal is described with a controller configured to receive, from applications, respective requests for an exchange of application layer data over a communication network associated with the respective application, to select a first application, to control a communication circuit to perform an exchange according to the request received from the first application, to initiate, for a second application, a buffering of application layer data requested to be exchanged according to the request received from the second application, to control the communication circuit to release the first network layer communication connection based on a duration of the buffering and to establish a second network layer communication connection to a communication network associated with the second application and perform an exchange according to the request received from the second application over the second network layer communication connection after release of the first network layer communication connection.

Communication terminal and method for communicating data

A method () of bias cancellation for a radio channel sequence includes: receiving () a radio signal, the radio signal comprising a radio channel sequence coded by a first signature, the first signature belonging to a set of orthogonal signatures; decoding () the radio channel sequence based on the first signature to generate a decoded radio channel sequence; decoding () the radio channel sequence based on a second signature, wherein the second signature is orthogonal to the signatures of the set of orthogonal signatures, to generate a bias of the radio channel sequence; and canceling () the bias of the radio channel sequence from the decoded radio channel sequence.

Method and device for canceling a bias of a radio channel sequence

A circuit according to an example includes a receiver circuit configured to receive a signal including a data stream, the data stream including at least one block of data, a block of the at least one block of data including at least two sub-blocks, a payload of the block being redundantly encoded in the at least two sub-blocks, and the at least two sub-blocks of the block being consistently arranged over time inside the block. The circuit further includes a control circuit configured to switch the receiver circuit into a non-ready-to-receive state during at least a part of at least one of the at least two sub-blocks of the block, when an enable condition is fulfilled.

Circuit, integrated circuit, receiver, transceiver and method for receiving a signal

A communication device is described comprising a plurality of receive paths, wherein each of the plurality of receive paths is configured to extract a multipath component of a received signal, a determiner configured to determine whether at least two of the plurality of receive paths fulfil a mutual interference correlation criterion among the plurality of receive paths and a processor configured, if at least two of the plurality of receive paths fulfil the interference correlation criterion among the plurality of receive paths, to determine the sent signal based on canceling or mitigating the interference between the multipath components of the received signal extracted by the at least two receive paths.

Communication device and method for receiving a signal

A device includes a first adjustment unit which is configured to adjust a power of a first carrier signal, and a second adjustment unit configured to adjust a power of a second carrier signal. The first adjustment unit is configured to adjust the first carrier signal power based on a maximum allowable imbalance between the first carrier signal power and the second carrier signal power. A method for controlling a transmit power in a user equipment of a radio communications system includes calculating in the user equipment first carrier signal power and a second carrier signal power. The method further includes adjusting in the user equipment the calculated transmit power for at least one out of the first carrier signal and the second carrier signal based on the maximum allowable power imbalance between the first carrier signal power and the second carrier signal power.

Method and device for controlling a transmit power in a user equipment

A method for adjusting a transmit power of a multi carrier transmitter in a mobile communication system includes providing at least two data streams, each data stream to be transmitted on a separate carrier frequency, and determining a transmit signal adaptation metric separately for each of the at least two data streams. The method further includes calculating a combined transmit signal adaptation metric based on the separate transmit signal adaptation metrics, combining the two data streams carried on the two carrier frequencies to an overall transmit signal, and adjusting the transmit power of the overall transmit signal based on the calculated combined transmit signal adaptation metric.

Method for adjusting a transmit power of a multi carrier transmitter and a multi carrier transmitter

The method is based on a signal interval (DB) which comprises a first part (ET) (which is modulated using a first modulation method (GFSK)) of the signal interval and a second part (which is modulated using a second modulation method (DMPSK)) of the signal interval. The channel parameters (c(i)) relating to the second part (which is modulated using the second modulation method) of the signal interval are determined using a received data signal (a(i); p(i)) from the first part (ET) of the signal interval (DB).

Method for channel estimation when using different modulation methods within one signal interval

A description is given for a method for operating a wireless multichannel CDMA transmitter, wherein a power metric based on a particular signal configuration is determined, the power metric being determined as a function of power weighting factors used in the channels of the particular signal configuration, and wherein the transmitter output power is adjusted based on the power metric.

Method for adjusting transmitter output power

A description is given of a transmitter including a baseband chip, a radio frequency chip and an interface unit coupling the baseband chip and the radio frequency chip. The radio frequency chip includes a modulation unit configured to modulate multiple data streams, wherein each of the data streams is assigned to a subcarrier having a frequency differing from the frequencies of the other subcarriers.

Transmitter and receiver

The invention relates to an apparatus for preprocessing of pilot symbols for channel estimation. The pilot symbols are transmitted from a base station and are received by a mobile radio, and are available in the mobile radio. The apparatus includes a low-pass filter apparatus for filtering the received pilot symbols, with a setting of the low-pass filter apparatus depending on the relative speed of the mobile radio with respect to the base station.

Apparatus and method for preprocessing of pilot symbols for channel estimation by means of adaptive low-pass filtering

A mobile station sends to the base stations a bit vector which contains weighting factors (w, w) for the amplitudes and/or the phases of the signals to be emitted from the antennas. The bit vector is updated by changing one bit position for each time slot, and by transmitting this from the mobile station to the base station in the form of a bit (e.g., an FBI (feedback information) bit). A trellis diagram can be set up comprising the possible states of the bit vector and the possible state changes (branches) and the Viterbi algorithm can be used for the determination of the weighting factors actually used by the base station, taking account of both the currently transmitted training symbols and the previously transmitted training symbols.

Verification of the antenna weights of the base station in a UMTS mobile radio receiver by use of the Viterbi algorithm with fed-back transmission diversity

The present invention relates generally to a converter circuit with a limiter to convert an analog reception signal into a value-discrete limiter signal. An evaluation circuit determines a zero crossing distance signal from the temporal distances between successive zero crossings of the limiter signal. A synthesis circuit calculates a digital processing signal whose zero crossings correspond to those of the limiter signal and whose pulse shape has a smaller spectral width than a rectangular pulse.

Converter circuit for a limiter receiver structure and method for converting a signal in a limiter receiver structure

In the method, the received spread-coded signal sequence r(i) is first of all correlated with the spread-coded training symbol sequence in a correlator () so as to counteract the influence of the transmitted training symbols. The signal sequence which results from the correlation process is then despread in a despreading apparatus (). The despread signal sequence is integrated over a number (N_MF) of signal values, with the number (N_MF) being set as a function of the channel dynamic range (&#x3bb;). The sequence of data symbols produced in this way is filtered with fixed or variable filter coefficients in a digital filter () in order to produce channel estimation values ({tilde over (H)}(l)).

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Krefeld, Germany

Michael Speth