Kathrein-werke Kg

Ubidyne, Inc.

Katrein-werke Kg

Georg Schmidt

Peter Kenington

Johannes Schlee

Martin Weckerle

Maik Riegler

Dirk Neumann

Johannes Fuchs

Markus Hilsenbeck

An antenna array having a plurality of antenna elements is disclosed. The antenna array comprises: a plurality of transceiver modules; an active antenna element subset of the plurality of antenna elements, wherein the active antenna element subset comprises at least one active antenna element being actively coupled to an associated transceiver module of the plurality of transceiver modules; and at least one passively combined sub-array of at least two antenna elements of the plurality of antenna elements. A method for generating antenna patterns with the antenna array is also disclosed.

Antenna array and method for synthesizing antenna patterns

The present invention refers to an active antenna array having a plurality of antenna elements comprising: at least one first subset of the plurality of antenna elements, the at least one first subset relaying a first radio signal having a first antenna beam pattern; and at least one second subset of the plurality of antenna elements, the at least one second subset relaying a second radio signal having a second antenna beam pattern, wherein at least one of the plurality of antenna elements is a common antenna element belonging to both the first subset and the second subset. A method for operating the active antenna array is also disclosed.

Antenna array and method for operating antenna array

The present disclosure provides an antenna array () for relaying radio signals into a cell () of a communication network (). The antenna array () comprises a plurality of uplink beam forming vectors () selectable as an uplink beam shape for an uplink relaying and a plurality of downlink beam forming vectors () selectable as a down link beam shape for a down link relaying. The plurality of uplink beam forming vectors () and/or the plurality of the downlink beam forming vectors () may be adjusted at a digital radio interface and forwarded from the digital radio interface to the antenna array (). An individual one () of the plurality of uplink beam forming vectors () and an individual one () of the plurality of downlink beam forming vectors () are independently selectable using a local knowledge () about the cell. The present disclosure further provides a communication network () comprising a plurality of the antenna arrays (---N) for relaying radio signals into the communication network (). The communication network () further comprises a network playing system () adapted to independently select an individual one (---N) of the plurality of uplink beam forming vectors (---N) and an individual one (---N) of the plurality of downlink beam forming vectors (---N) for at least one of the antenna arrays (---N) using a local knowledge () about the communication network (). The present disclosure further provides a method for relaying radio signals into a cell () of the communication network (), a method () for planning the communication network (), and a method () for relaying radio signals into cells (---N) of the communication network (); all methods () using a knowledge () about the communications network ().

Antenna array, network planning system, communication network and method for relaying radio signals with independently configurable beam pattern shapes using a local knowledge

The present disclosure relates to an active antenna array for a mobile communications network. The active antenna comprises a base band unit coupled to a base station, a plurality of transceiver units and at least one link. The plurality of transceiver units is terminated by at least one antenna element. The at least one link couples individual ones of the plurality of transceiver units to the base band unit. The at least one link is a digital link and is adapted to relay an individual transmit signal concurrently and in synchronisation with a transmit clock signal. The present disclosure further teaches a method for relaying radio signals in a mobile communications network. The present disclosure further relates to a computer program enabling a computer to manufacture the active antenna array of the present disclosure and to execute the method of relaying radio signal in a mobile communications system.

Active antenna array and method for relaying radio signals with synchronous digital data interface

A method for crest factor reduction of a multi-carrier signal is disclosed. The multi-carrier signal comprises a plurality of single-carrier signals, each single-carrier signal having signal-specific spectral properties. The method comprises identifying a peak in the multi-carrier signal and a time of occurrence of the peak and generating a plurality of cancellation pulses depending on the time of occurrence of the peak. A particular cancellation pulse of the plurality of cancellation pulses is associated with a particular single-carrier signal and cancellation pulse-specific spectral properties of the particular cancellation pulse substantially match the signal-specific spectral properties of the associated particular single-carrier signal. The method further comprises combining the plurality of cancellation pulses to form a combined cancellation pulse and applying the combined cancellation pulse to the multi-carrier signal to reduce the peak. A corresponding circuit and corresponding computer program products useable during manufacture and operation are also disclosed.

Crest factor reduction for a multicarrier-signal with spectrally shaped single-carrier cancelation pulses

The present disclosure teaches an active antenna array for a mobile communications network. The active antenna array comprises a base band unit, a plurality of transceiver units terminated by at least one antenna element; and at least one link. The link couples the individual ones of the plurality of transceiver units to the base band unit. The link is a digital link and is adapted to relay a payload signal at a selectable payload rate. The digital link is further adapted to relay a timing signal at a fixed timing rate, when the timing signal is embedded in the payload at a selectable payload rate. The present disclosure further teaches a method for relaying radio signals and a computer program for manufacturing the active antenna array and for executing the method.

Active antenna array and method for relaying radio signals

A method for crest factor reduction of a multi-carrier signal is disclosed. The method comprises determining a plurality of signal values of a plurality of single-carrier signals prior to combining the plurality of single-carrier signals to form the multi-carrier signal. The method further comprises performing a joint potential peak detection on the plurality of signal values, producing a temporal position of a possible peak in the multi-carrier signal, generating a plurality of cancellation pulses, and injecting the plurality of cancellation pulses to the plurality of single-carrier signals at temporal injection positions which correspond to the temporal position of the possible peak in the multi-carrier signal. The single-carrier signals are then combined to form a crest factor reduced multi-carrier signal. A corresponding circuit and corresponding computer program product useable during manufacture and operation are also disclosed.

Crest factor reduction method and circuit for a multi-carrier signal

The present disclosure teaches a calibration system, a calibration apparatus and a method for calibrating a signal path and a method for calibrating a delay. The calibration system comprises an injector, a calibration signal generator, a correlator, a detector unit, a polygon former and a pattern classifier unit. The calibration system is adapted to calculate a fraction of a delay from a set of polygons. The delay is being accumulated along a signal path. The fraction of the delay is indicative of an accuracy of the delay at a fine sampling rate as if the delay was measured at the fine sampling rate being an integer multiple of the coarse sampling rate. The method for calibrating of the signal path uses a calibration signal sampled at a coarse sampling rate. Correlation techniques are used in order to detect a fraction of the delay from a set of polygons.

System, apparatus and method for calibrating a delay along a signal path

An antenna array () for the transmission of signals () is disclosed. The antenna array () comprises: a plurality of transmission paths (---K) for transmitting a plurality of wanted signals () and at least one calibration signal generator (--,-K) for the generation of at least one calibration signal (). A plurality of calibration signal mixers (---K) mixes the at least one calibration signal () with the plurality of wanted signals () to produce a plurality of transmission signals (). A path sum signal device () sum the plurality of transmission signals () to produce a summed transmission signal (); and an interference estimator () accepts the at least one calibration signal () and generates an estimated interference signal (). An estimation signal mixer () subtracts from the summed transmission signal () the estimated interference signal () to produce a difference signal (); and a on signal detection unit () for comparing the signal () with the at least one calibration signal ().

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Laichingen, Germany

Georg Schmidt