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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
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.
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Patent Agency Ranking
公开(公告)号：US20190386776A1
公开(公告)日：2019-12-19
申请号：US16440072
申请日：2019-06-13
Applicant: Nokia Solutions and Networks Oy
Inventor： Yannick Lefevre , Werner Coomans , Jochen Maes
Abstract: A method is proposed for encoding DTUs (30) in a transmitter (111; 211) for further transmission to a receiver (212; 112). Communications from the transmitter to the receiver alternate between first time sub-frames (22; 24) comprising data symbols of a first type (D2; U2) having a first data payload capacity (NDSC,MIN), and second time sub-frames (21; 23) comprising data symbols of a second type (D1; U1) having a second data payload capacity (NDSC,MAX) greater than the first data payload capacity. The method comprises encoding individual DTUs into Q block-interleaved codewords (40) for protection against communication errors, Q denoting a positive integer value; obtaining scheduling information (txsch_info) as to the types of data symbols over which the encoded DTUs (50) are to be conveyed; and enabling or disabling the further block-interleaving of a group of M consecutive encoded DTUs (60) based on the scheduling information for the respective M consecutive encoded DTUs, M denoting a positive integer value greater than one.The present invention also relates to a transmitter (111; 211) for encoding DTUs according to the method, and to a receiver (112; 212) for decoding the so-encoded DTUs.
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公开(公告)号：US10992341B2
公开(公告)日：2021-04-27
申请号：US16442952
申请日：2019-06-17
Applicant: Nokia Solutions and Networks OY
Inventor： Paschalis Tsiaflakis , Jochen Maes , Werner Coomans , Carl Nuzman
Abstract: A multi-line digital transceiver configured to use low-complexity beamforming on at least some tones to boost effective SNR values for selected subscriber lines. In an example embodiment, the beamforming coefficients can be restricted to one-bit values or two-bit values, e.g., such that the corresponding beamforming computations can be implemented using only sign changes, swaps of the real and imaginary parts, and/or zeroing of some values, and without invoking any full-precision hardware multiplication operations. At least some embodiments can be run on a significantly simpler and/or less powerful vectoring engine than conventional beamforming solutions while still being able to provide nearly optimal beamforming SNR gains. In some embodiments, additional scaling by powers of two may be applied to at least some signals contributing to the beamforming, e.g., to satisfy power constraints for some or all of the subscriber lines.
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公开(公告)号：US20190305920A1
公开(公告)日：2019-10-03
申请号：US16369407
申请日：2019-03-29
Applicant: Nokia Solutions and Networks Oy
Inventor： Werner Coomans , Rex Coldren
IPC: H04L5/14
Abstract: Example embodiments describe a controller comprising means for performing i) discovering a mapping between receive analogue to digital converters, RxADCs, of a full duplex node (100) and cable modems (111-113, 121-123, 131-133, 141-143) connected to the full duplex node; and wherein the cable modems share a common communication bandwidth; and ii) determining, based on the mapping, sounding groups (152, 162) by grouping cable modems (111-131, 121-123) mapped to a same RxADC (151) into a respective sounding group (152); and wherein a sounding group is indicative for an upper bound of possible interfering cable modems.
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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
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.
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公开(公告)号：US10305435B1
公开(公告)日：2019-05-28
申请号：US15970438
申请日：2018-05-03
Applicant: Nokia Solutions and Networks Oy
Inventor： Rosanah Murugesu , Hungkei Chow , Werner Coomans
Abstract: In an example embodiment, a transceiver includes a plurality of amplifiers configured to amplify an analog transmit signal to generate a plurality of amplified transmit signals for further transmission, a combiner configured to combine a plurality of output signals to generate a combined signal, the plurality of output signals being based on the plurality of amplified transmit signals and at least one processor configured to execute computer-readable instructions to cause the transceiver to determine pre-distortion compensation coefficients based on the combined signal and generate a pre-distortion compensated transmit signal based on the pre-distortion compensation coefficients.
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