Telefonaktiebolaget Lm Ericsson (Publ)

Nobel Biocare Services, Ag

Oticon Medical A/s

Thomas Eriksson

Ulf Gustavsson

Mats Rydström

Adrian Haus

Thomas Fischer

Mikael Brunell

Izidor Brajnovic

Lars Jörneus

Christian Fager

Katharina Hausmair

Mikael Coldrey

Lars Jorneus

Sven Jacobsson

Robert Lindgren

Thomas Ove Emanuelsson

Göran Nilsson

Hamed Farhadi

Björn Gävert

David Sollberger

Per Landin

Hanna Peters

Mats Viberg

Willem Bastiaan Kleijn

Martin Johansson

Henrik Peterson

Nikolaos Kolomvakis

Emelie Lager

Anton Hedström

Sina Rezaei Aghdam

Thomas Emanuelsson

Magnus OttsjÖ

Magnus Ottsjö

There is provided mechanisms for beamformed transmission using a precoder. A method is performed by a radio transceiver device. The radio transceiver device comprises hardware. The hardware impacts transmission of signals from the radio transceiver device. The method comprises acquiring channel conditions of a radio propagation channel between the radio transceiver device and at least one other radio transceiver device. The method comprises determining a precoder, in form of a linear precoding matrix, for beamformed transmission towards the at least one other radio transceiver device. The precoder is determined according to the channel conditions and a model of how the hardware impacts the transmission of signals from the radio transceiver device. The method comprises transmitting, using the precoder, a signal towards the at least one other radio transceiver device.

Beamformed transmission using a precoder

A drill bit for drilling a cavity or a recess into a skull, wherein the cavity or the recess is configured to receive an implantable fixture screw unit of a hearing aid system, is disclosed. The drill bit includes a first part including a drill tip with a first drill diameter, wherein the drill tip comprises a tip angle of between 137 degrees to 143 degrees along a longitudinal axis of the drill bit and wherein the drill tip comprises a back rake angle of between −1 degree and +1 degree, in particular a back rake angle of substantially 0 degrees, a second part including a plurality of flute blades with a second drill diameter, wherein the second drill diameter is greater that the first drill diameter, and a transition part which is arranged between the first part and the second part and along the longitudinal axis, wherein the transition part includes a body clearance.

Drill bit, drill kit and method for drilling a cavity or a recess into a skull

Using information contained in clipped samples from analog-to-digital (ADC) conversion to improve receiver performance, by, for example, reducing the clipping distortion caused by ADCs due to its data resolution constraints. This provides an advantage over existing solutions, which perform suboptimally because the existing solution discard information in tire clipped samples.

Reconstruction of clipped signals

The present disclosure relates to an apparatus of attaching a dental component having an angulated screw channel to a dental implant. The present disclosure also relates to a dental component having an angulated screw channel and a metal adapter.

Apparatus for attaching a dental component to a dental implant

A linearization device () is disclosed, which is configured to determine pre-distortion parameters associated with a plurality of non-linear amplifiers (), each associated with a non-linear amplifier characteristic. The linearization device comprises determination circuitry (), a first port () and a second port (). The first port is configured to receive a plurality of channel coefficients indicative of channel characteristics of a plurality of communication paths () between the plurality of non-linear amplifiers and a transmit observation receiver (). The second port is configured to receive, from the transmit observation receiver, a sum of transmission signals generated by the plurality of non-linear amplifiers and transferred over the plurality of communication paths. The determination circuitry is configured to determine the pre-distortion parameters based on the received plurality of channel coefficients, the received sum of transmission signals, and a model of the non-linear amplifier characteristics of the non-linear amplifiers. Corresponding arrangement, wireless transmitter node, cloud based server node, method and computer program product are also disclosed.

Linearization of non-linear amplifiers

There is provided mechanisms performed by a control device for suppressing interference in a received reception signal in a radio transceiver device. The radio transceiver device is configured to receive the reception signal as a radio reception signal and to generate a radio transmission signal. The radio transmission signal and the radio reception signal occupy at least partly non-overlapping frequency bands. A method comprises obtaining a transmission reference signal based on the radio transmission signal. The method comprises estimating an interference distortion component signal based on the transmission reference signal and on a model of nonlinearity in a radio circuit of the radio transceiver device. The method comprises suppressing interference in the reception signal by combining the reception signal with the distortion component signal.

Interference suppression in a radio transceiver device

A transmitter for radio transmission to one or more receivers over a channel described at least in part by a channel matrix H, the transmitter comprising a pre-coder connected to an antenna array via a transmit unit, the antenna array comprising a number M of antenna elements a, m=1, 2, . . . , M, each antenna element am being configured to receive a respective transmit signal component xfrom the pre-coder via the transmit unit, the pre-coder being configured to receive a number K&#x3c;M of data streams sk, k=1, 2, . . . , K, and to generate the M transmit signal components, wherein the generating comprises adding M shaping components e, m=1, 2, . . . , M, to respective transmit signal components x, the shaping components ebeing generated based on a null-space of the channel matrix H and on one or more properties of the transmit unit.

Radio transmitter for distortion mitigation

The disclosure relates to devices, methods, and computer programs in mobile communications in order to reduce signal distortions. Specifically, it relates to a transmitter system which comprises a plurality of signal paths. Each signal path is associated with an input transmission signal. Each signal path comprises an analog portion of the signal path. Each 5 signal path comprises a Dual-Input Digital Predistortion, DI DPD, module. The DI DPD is configured to provide a predistorted input transmission signal to the analog portion in response to a received Crosstalk and Mismatch, CTM, signal and the input transmission signal. The transmitter system further comprises one or more CTM modules configured to receive one or more input transmission signals. The CTM module comprises to separately generate for 10 each DI DPD module the CTM signal, where said CTM signals represent CTM distortions caused by one or more output transmission signals of each said analog portion.

Apparatus and method for identification and compensation of distortion in a multi-antenna system

The present invention relates to a method of attaching a dental component having an angulated screw channel to a dental implant. The present invention also relates to a dental component having an angulated screw channel and a metal adapter.

Method of attaching a dental component to a dental implant

The present disclosure relates to an antenna arrangement and a method for radio transmission. The antenna arrangement comprises a pre-coder () connected to an antenna array (). The antenna array () comprises a number N of antenna elements a(), i=1, 2, . . . , N, each antenna element abeing configured to receive a respective transmit signal component TXfrom the pre-coder (). The pre-coder () is configured to receive a number M&#x3c;N of independent data streams s, j=1, 2, . . . , M, and to generate the N transmit signal components, wherein the generating comprises suppressing a correlation between any two transmit signal components TXand TXreceived by antenna elements aand aarranged adjacently in the antenna array ().

Antenna arrangement for non-linear distortion mitigation

An antenna arrangement configured for digital beam-forming of a transmit signal comprising; a number N&#x3e;1 of digital to analog converters, DACs, each of the N DACs being arranged to receive one respective digital transmit signal component, and to convert and output an analog transmit signal component, each of the N DACs having a respective resolution below a resolution required to fulfill a regulatory radio requirement in an interchangeable antenna arrangement arranged for transmission by a single antenna element connected to a single DAC; and N antenna elements, each of the N antenna elements being configured to receive one respective analog transmit signal component and to transmit the analog transmit signal component as part of the digitally beam-formed transmit signal.

Apparatus and method for digital beam-forming with low-resolution quantization

The present invention relates to an abutment (), comprising: a ceramic part (); and a metal adapter () removably attachable to the ceramic part, wherein the metal adapter has a conical connection interface () for attachment to a dental implant (). The present invention also relates to a method of attaching an abutment () to a dental implant ().

Abutment and method of attaching an abutment to a dental implant

A receiver for an MCM signal with pilot symbols, comprising a first phase adjustment unit for adjusting the phase of an MCM signal by means of the pilot symbols and to output a first phase adjusted MCM signal to an MCM re-modulator unit which demodulates and then modulates the first phase-adjusted MCM signal to create an MCM reference signal. The communications receiver also comprises a second phase adjustment unit which receives the first phase adjusted MCM signal and also the MCM reference signal. The second phase adjustment unit adjusts the phase of the first phase adjusted MCM signal by means of said MCM reference signal and outputs a second phase adjusted MCM signal to an output MCM demodulator which demodulates the second phase adjusted MCM signal and outputs the demodulated MCM signal.

Receiver for multi carrier modulated signals

A transmitter comprising a baseband modulator arranged to modulate a complex baseband signal and to output a complex modulated signal x(n) with amplitude g and phase q, i.e. x(n)=g(n)e, to the input port of a filter, the filter in turn having its output coupled to a transmit unit, said filter being arranged to output a filtered complex output signal x(n) with amplitude g but phase m, i.e. x(n)=g(n)e, so that the filter is arranged to affect the phase but not the amplitude of its input signal. The filter is arranged to have as its transfer function for the phase of its input signal the z-transform F(z)=1+wz, where w is a weighting function whose value is determined by means of the additive noise autocorrelation, the phase noise autocorrelation and the signal amplitude of x.

Growing community of inventors

Gothenburg, Sweden

Thomas Eriksson