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公开(公告)号：US20240267083A1
公开(公告)日：2024-08-08
申请号：US18290306
申请日：2022-02-08
发明人： Masato IZAWA , Satoru SAKURAZAWA , Isao KATO , Takumi ASAINA
摘要： A detection apparatus is provided for a signal transmission apparatus, the signal transmission apparatus being configured to receive a reception signal via a transmission line and including an adaptive filter to be applied to the reception signal. The detection apparatus includes an acquisition unit configured to acquire a filter coefficient of the adaptive filter, and a detection unit configured to detect an abnormality in the transmission line, based on an amount of change over time in the filter coefficient acquired by the acquisition unit.
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2.发明授权公开(公告)号：US11996907B2
公开(公告)日：2024-05-28
申请号：US17858882
申请日：2022-07-06
发明人： Olivier Delaby , Nicolas Dupuis , Axel Van Damme
CPC分类号： H04B3/48 , H04B3/487 , H04B17/101
摘要： Embodiments of the present disclosure relate to an apparatus including means configured to perform: obtaining a measured channel frequency response, and a measured noise power spectral density for a line of a wired network susceptible to an impairment; deriving, in case of an indication of an impairment present on the line, from the measured channel frequency response and the measured noise power spectral density, a first theoretical noise representation for the line with the impairment and a second theoretical noise representation for the line without the impairment; and determining information indicative of a location of the impairment in the line, by processing the measured noise power spectral density, the first theoretical noise representation, and the second theoretical noise representation with a neural network.
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公开(公告)号：US11901968B2
公开(公告)日：2024-02-13
申请号：US17235813
申请日：2021-04-20
摘要： A method of operating an Ethernet transceiver includes initializing the Ethernet transceiver during a training mode of operation by monitoring background link operating characteristics with on-chip circuitry during a non-data-transfer interval to establish a baseline alien crosstalk value. Training data is then transmitted at a first transmit power level and first data rate to a link partner during a data transfer interval. The link is monitored with the on-chip circuitry during the data transfer interval to detect feedback indicating alien crosstalk effects to neighboring Ethernet links due to the transmitting. The first data rate and/or first transmit power level is then adjusted to an adjusted second data rate and/or second transmit power level based on the feedback. The Ethernet transceiver is then operated in a normal data transfer mode utilizing the adjusted second data rate and/or transmit power level.
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公开(公告)号：US11860222B2
公开(公告)日：2024-01-02
申请号：US17449532
申请日：2021-09-30
发明人： Fan Xu
CPC分类号： G01R31/2884 , H04B3/487
摘要： A method for testing crosstalk effect includes: obtaining a test signal and an interference input signal; inputting the test signal into a crosstalk effect test circuit obtained by simulation, so as to obtain an interfered signal; and when a rise time of the interfered signal or a fall time of the interfered signal is greater than a preset time threshold, determining that an excessive crosstalk effect exists in an integrated circuit under test. The crosstalk effect test circuit includes a first circuit, N second circuits, and N capacitors. The first circuit is configured to simulate an interfered first signal circuit in the integrated circuit under test; the N second circuits are configured to simulate N second signal circuits that interfere with the first signal circuit in the integrated circuit under test.
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5.发明授权公开(公告)号：US11677439B2
公开(公告)日：2023-06-13
申请号：US17558117
申请日：2021-12-21
申请人： VIAVI SOLUTIONS INC.
IPC分类号： H04B3/487
CPC分类号： H04B3/487
摘要： A method and an apparatus providing common path distortion (CPD) detection from a field instrument, particularly when the source of the common path distortion is at a portion of the network beyond the subscriber's tap.
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公开(公告)号：US11632145B2
公开(公告)日：2023-04-18
申请号：US16471399
申请日：2017-12-18
申请人： Alcatel Lucent
发明人： Paschalis Tsiaflakis , Jochen Maes
摘要： The present invention relates to a communication controller (131; 132) and method for controlling communications between an access node (101; 102) and a plurality of remote communication units (211; 212) coupled to the access node via at least one wired transmission medium (20; 40). At least one communication unit (111, 211; 112, 212) of the access node and of the plurality of remote communication units is configured to operate in full-duplex mode according to a first full-duplex communication profile (OP1) when using a first subset of transmission resources (TSSET1; TONESET1) selected from a whole set of transmission resources available for communication over the at least one transmission medium, and according to a second full-duplex communication profile (OP2) when using a second non-overlapping subset of transmission resources (TSSET2; TONESET2) selected from the whole set of transmission resources. The first full-duplex communication profile includes first downstream and upstream transmit power profiles (PSDDS1, PSDUS1) to achieve first aggregate downstream and upstream data rates (DSMAX1, USMIN1; DSMAX2, USMIN2) over the at least one transmission medium, and the second full-duplex communication profile includes second downstream and upstream transmit power profiles (PSDDS2, PSDUS2) to achieve second aggregate downstream and upstream data rates (USMAX1, DSMIN1; USMAX2, DSMIN2) over the at least one transmission medium distinct from the respective first aggregate downstream and upstream data rates. The present invention also relates to a so-configured full-duplex communication unit.
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公开(公告)号：US20220376740A1
公开(公告)日：2022-11-24
申请号：US17752562
申请日：2022-05-24
申请人： Marvell Asia Pte Ltd
摘要： A network controller receives link metrics for network links on cables between network devices in a communication network. The link metrics include metrics indicative of crosstalk experienced by network links among the network links on cables. The network controller determines, based at least in part on the link metrics, respective link settings for respective network links among the network links. The link settings are determined to mitigate crosstalk experienced by the respective network links as a result of transmission of signals in at least some of the network links at baud rates that correspond to bandwidths that exceed maximum bandwidth ratings of respective cables of the corresponding ones of the network links. The network controller causes configuration of the respective network links based on the link settings to optimize performance across the plurality of network links in the communication network.
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公开(公告)号：US11228340B1
公开(公告)日：2022-01-18
申请号：US16554036
申请日：2019-08-28
申请人： Aquantia Corporation
摘要： A method of operation on an Ethernet network having multiple Ethernet links interconnected via a network device. The method includes detecting installation of a new Ethernet link in the Ethernet network utilizing the network device. A link training process is then initiated for the new Ethernet link. The link training process includes transmitting training data at a first transmit power level and first data rate to a link partner during a data transfer interval. Network feedback information is then accessed, including performance metrics associated with the multiple Ethernet links during the training data transfer interval. The first data rate and/or first transmit power level are then adjusted to an adjusted second data rate and/or second transmit power level based on the network feedback information.
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公开(公告)号：US20210399764A1
公开(公告)日：2021-12-23
申请号：US17463976
申请日：2021-09-01
申请人： Intel Corporation
发明人： Jingbo Li , Beom-Taek Lee , Jong-Ru Guo , Yunhui Chu , Chunfei Ye , Kai Xiao
摘要： An apparatus comprises a crosstalk cancelation circuit comprising a plurality of taps to output signals based on a signal transmitted via a first data line; and a summation circuit to combine a signal received by a second data line with the signals output by the plurality of taps to reduce near-end crosstalk present in the signal received by the second data line.
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公开(公告)号：US20210328382A1
公开(公告)日：2021-10-21
申请号：US17363411
申请日：2021-06-30
IPC分类号： H01R13/6466 , H04B3/487 , H01R24/64 , H01R13/6581 , H04B3/32 , H01R13/719 , H01R13/66
摘要： The present invention relates to methods and systems for minimizing alien crosstalk between connectors. Specifically, the methods and systems relate to isolation and compensation techniques for minimizing alien crosstalk between connectors for use with high-speed data cabling. A frame can be configured to receive a number of connectors. Shield structures may be positioned to isolate at least a subset of the connectors from one another. The connectors can be positioned to move at least a subset of the connectors away from alignment with a common plane. A signal compensator may be configured to adjust a data signal to compensate for alien crosstalk. The connectors are configured to efficiently and accurately propagate high-speed data signals by, among other functions, minimizing alien crosstalk.
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