公开(公告)号：US11909510B2

公开(公告)日：2024-02-20

申请号：US17142994

申请日：2021-01-06

Applicant: Nokia Solutions and Networks Oy

Inventor： Wouter Lanneer ,  Paschalis Tsiaflakis

IPC: H04J1/12 ,  H04J11/00

CPC classification number: H04J1/12 ,  H04J11/00

Abstract: Example embodiments describe means (200) for performing i) pre-compensating (210, N sets of K1 tone data values (220) for crosstalk between N communication lines; the N sets of K1 tone data values pertaining to respective N terminal nodes of a digital communication system; ii) calculating (215) from the pre-compensated N sets of K1 tone data values (221) N sets of first time domain symbols (225); iii) calculating (283) a second time domain symbol (284) from a set of K2 tones values (280); the K2 tone data values pertaining to a selected one of the N terminal nodes; and iv) adding (212) the second time domain symbol in a weighted manner to the first time domain symbols such that the second time domain symbol is added to the first time domain symbol for the selected terminal node and to at least one other of the first time domain symbols for the respective other terminal nodes.

公开(公告)号：US11817975B2

公开(公告)日：2023-11-14

申请号：US17670889

申请日：2022-02-14

Applicant: Nokia Solutions and Networks Oy

Inventor： Wouter Lanneer ,  Yannick Lefevre ,  Paschalis Tsiaflakis ,  Werner Coomans

IPC: H04L25/03 ,  H04L25/02

CPC classification number: H04L25/03343 ,  H04L25/0212 ,  H04L2025/03815

Abstract: The present disclosure relates to an equalizer training unit for deriving equalization parameters for compensating data-dependent distortion in received samples by use of a training sequence including a sequence p>1 times and cyclically comprising N sub-sequences of respective combinations of L time-domain symbols of a modulation scheme, wherein the N sub-sequences are cyclically arranged in a selected order and such that L−1 symbols of a respective sub-sequence overlap with symbols in the preceding and following sub-sequences. The present disclosure further relates to a training sequence generator unit for generative the training sequence and an equalizer employing the equalizer training unit.

公开(公告)号：US12081926B2

公开(公告)日：2024-09-03

申请号：US17949553

申请日：2022-09-21

Applicant: Nokia Solutions and Networks Oy

Inventor： Yannick Lefevre ,  Wouter Lanneer ,  Werner Coomans

IPC: H04B10/00 ,  H04J14/02 ,  H04Q11/00 ,  H04B10/27 ,  H04J14/00

CPC classification number: H04Q11/0067 ,  H04J14/0282 ,  H04B10/27

Abstract: The method includes sending a first frame of a first modulation format that is suitable for a first group of receivers before sending a second frame of a second modulation format that is suitable for a second group of receivers, wherein the first modulation format is a higher modulation format than the second modulation format, and wherein the method further includes inserting into the first frame at least one symbol of the second modulation format at at least one outer edge of the first frame.