公开(公告)号：US20220109462A1

公开(公告)日：2022-04-07

申请号：US17487528

申请日：2021-09-28

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Marko FLEISCHER ,  Jan HELLMANN ,  Rene RÖSCHKE ,  Björn JELONNEK ,  Jürgen HELLSTAB

IPC: H04B1/12

Abstract: An apparatus includes an estimation circuitry configured to receive a first set of one or more digital signals of transmitters of a communication system, and capture a set of one or more radio frequency signals that have been generated from the first set of digital signals The set of radio frequency signals being input of an antenna system of the communication system. Based on the first set of digital signals and the corresponding set of radio frequency signals, a set of weights related to a distortion effect caused by the generation of the radio frequency signals is derived. A received second set of digital signals is weighted using the set of weights, resulting in filtered signals. Using the filtered signals, a correction signal indicative of an interference caused by transmission of the second set of digital signals at a receiver of the communication system is estimated.

公开(公告)号：US20210119657A1

公开(公告)日：2021-04-22

申请号：US17066960

申请日：2020-10-09

Applicant: Nokia Solutions and Networks Oy

Inventor： Grzegorz HAZA ,  Radoslaw CESZKIEL ,  Gunter WOLFF ,  Björn JELONNEK

IPC: H04B1/12 ,  H04B1/14 ,  H04B1/10 ,  H03F1/32 ,  H03F3/24

Abstract: A method comprising: obtaining a first radio signal and a second radio signal, determining a first envelope signal based on the first radio signal and a second envelope signal based on the second radio signal, determining a preview envelope signal based on the first envelope signal and the second envelope signal, determining a common clipping gain signal based on the preview envelope signal, determining a first clipping gain signal based on the common clipping gain signal and a first weighing factor, determining a second clipping gain signal based on the common clipping gain signal and a second weighing factor, performing a first crest factor reduction for the first radio signal utilizing the first clipping gain signal, and performing a second crest factor reduction for the second radio signal utilizing the second clipping gain signal.

公开(公告)号：US20240030948A1

公开(公告)日：2024-01-25

申请号：US18223292

申请日：2023-07-18

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Marko FLEISCHER ,  Björn JELONNEK ,  Martin STEIERT ,  Rene RÖSCHKE ,  Jan HELLMANN ,  Dirk SÖNNICHSEN

IPC: H04B1/04 ,  H02J3/01 ,  H02M1/12

CPC classification number: H04B1/0475 ,  H02J3/01 ,  H02M1/12

Abstract: Disclosed is a method comprising transmitting a first signal, obtaining an indication of a harmonic, wherein the harmonic is caused by the transmission of the first signal, determining, based on the indication of the harmonic, an estimation of the harmonic, receiving a second signal, wherein the second signal comprises the harmonic, and subtracting the estimation of the harmonic from the second signal.

公开(公告)号：US20230111822A1

公开(公告)日：2023-04-13

申请号：US17962801

申请日：2022-10-10

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Gunter WOLFF ,  Radoslaw CESZKIEL ,  Grzegorz HAZA ,  Björn JELONNEK ,  Michael WEBER

IPC: H04B1/00 ,  H04B1/04

Abstract: An apparatus comprises a digital processing device configured to generate a digital transmission signal, a digital-to-analog converter connected to the digital processing device and configured to convert the digital transmission signal into an analog transmission signal, and a power amplifier connected to the digital-to-analog converter and configured to amplify the analog transmission signal. An antenna filter is connected to the power amplifier and configured to filter the amplified analog transmission signal; the antenna filter is configured to pass frequencies in at least one passband and to attenuate frequencies in at least one stopband. The digital processing device is configured to perform a process of reducing peak power in the digital transmission signal; in this process error components having different frequencies are produced. A frequency spectrum of the error components is manipulated such that a part of the error components is deposited in the stopband of the antenna filter.