Thematische Bibliographien / Crosstalk NEXT

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Auswahl der wissenschaftlichen Literatur zum Thema „Crosstalk NEXT“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 7. Februar 2022

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Zeitschriftenartikel zum Thema "Crosstalk NEXT"

Aderinola, Musefiu, Bokolo Abovie, Festus Okosi, Igoniderigha Daniel und G. F. Odubo. „Analysis of Different Ways of Crosstalk Measurement in GSM Network“. International Journal of Reconfigurable and Embedded Systems (IJRES) 5, Nr. 2 (01.07.2016): 106. http://dx.doi.org/10.11591/ijres.v5.i2.pp106-110.

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<p>Crosstalk is one of the problems that affect the performance operation of global system mobile (GSM) network. Among the effect of crosstalk are call mute, call drop, wire propagation delay, dynamic power dissipation etc. Crosstalk is an undesirable signal arising due to the coupling capacitances between adjacent interconnecting wires and measured in decibel. In this paper some literature were reviewed and different ways of measuring crosstalk such as Near end croosstalk (NEXT), far end crosstalk (FEXT), Power sum crosstalk (PSNEXT) and alien crosstalk (AXT) were analyzed. </p>

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Hangleiter, Dominik. „Crosstalk diagnosis for the next generation of quantum processors“. Quantum Views 4 (29.10.2020): 46. http://dx.doi.org/10.22331/qv-2020-10-29-46.

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Venne, A. Saskia, Laxmikanth Kollipara und René P. Zahedi. „The next level of complexity: Crosstalk of posttranslational modifications“. PROTEOMICS 14, Nr. 4-5 (06.01.2014): 513–24. http://dx.doi.org/10.1002/pmic.201300344.

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Hussein, Ahmed Ali. „Using rectangular trace to reduce the crosstalk of the coupled microstrip lines“. International Journal of Engineering & Technology 5, Nr. 1 (29.12.2015): 7. http://dx.doi.org/10.14419/ijet.v5i1.4771.

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New electronic products must have high-speed, small size and lower voltages supply. With such layout, signal integrity (SI) becomes an actual important issue because sensitive equipment is affected on electromagnetic interference (EMI). Crosstalk is a major factor in signal integrity (SI) of printed circuit boards (PCBs). Crosstalk noise is usually represented in terms of Near-End crosstalk (NEXT) and Far-End crosstalk (FEXT). Crosstalk is a common problem that degrades circuit performance. To reduce this problem, via hole-fences connected by guard trace between double microstrip lines are used, in this case the crosstalk will be reduce by 6 dB than use 3W rule, but when it replaced by rectangular metal the crosstalk was reduce by 7dB, is better than use via hole-fences by 1 dB. The simulation result was done by using FEKO 5.5 simulator.

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Sarovar, Mohan, Timothy Proctor, Kenneth Rudinger, Kevin Young, Erik Nielsen und Robin Blume-Kohout. „Detecting crosstalk errors in quantum information processors“. Quantum 4 (11.09.2020): 321. http://dx.doi.org/10.22331/q-2020-09-11-321.

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Crosstalk occurs in most quantum computing systems with more than one qubit. It can cause a variety of correlated and nonlocal crosstalk errors that can be especially harmful to fault-tolerant quantum error correction, which generally relies on errors being local and relatively predictable. Mitigating crosstalk errors requires understanding, modeling, and detecting them. In this paper, we introduce a comprehensive framework for crosstalk errors and a protocol for detecting and localizing them. We give a rigorous definition of crosstalk errors that captures a wide range of disparate physical phenomena that have been called ``crosstalk'', and a concrete model for crosstalk-free quantum processors. Errors that violate this model are crosstalk errors. Next, we give an equivalent but purely operational (model-independent) definition of crosstalk errors. Using this definition, we construct a protocol for detecting a large class of crosstalk errors in a multi-qubit processor by finding conditional dependencies between observed experimental probabilities. It is highly efficient, in the sense that the number of unique experiments required scales at most cubically, and very often quadratically, with the number of qubits. We demonstrate the protocol using simulations of 2-qubit and 6-qubit processors.

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Jin, Jieqi, Mengkai Guang, Anthony Chukwunonso Ogbuehi, Simin Li, Kai Zhang, Yihong Ma, Aneesha Acharya et al. „Shared Molecular Mechanisms between Alzheimer’s Disease and Periodontitis Revealed by Transcriptomic Analysis“. BioMed Research International 2021 (01.04.2021): 1–22. http://dx.doi.org/10.1155/2021/6633563.

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Objective. To investigate the genetic crosstalk mechanisms that link periodontitis and Alzheimer’s disease (AD). Background. Periodontitis, a common oral infectious disease, is associated with Alzheimer’s disease (AD) and considered a putative contributory factor to its progression. However, a comprehensive investigation of potential shared genetic mechanisms between these diseases has not yet been reported. Methods. Gene expression datasets related to periodontitis were downloaded from the Gene Expression Omnibus (GEO) database, and differential expression analysis was performed to identify differentially expressed genes (DEGs). Genes associated with AD were downloaded from the DisGeNET database. Overlapping genes among the DEGs in periodontitis and the AD-related genes were defined as crosstalk genes between periodontitis and AD. The Boruta algorithm was applied to perform feature selection from these crosstalk genes, and representative crosstalk genes were thus obtained. In addition, a support vector machine (SVM) model was constructed by using the scikit-learn algorithm in Python. Next, the crosstalk gene-TF network and crosstalk gene-DEP (differentially expressed pathway) network were each constructed. As a final step, shared genes among the crosstalk genes and periodontitis-related genes in DisGeNET were identified and denoted as the core crosstalk genes. Results. Four datasets (GSE23586, GSE16134, GSE10334, and GSE79705) pertaining to periodontitis were included in the analysis. A total of 48 representative crosstalk genes were identified by using the Boruta algorithm. Three TFs (FOS, MEF2C, and USF2) and several pathways (i.e., JAK-STAT, MAPK, NF-kappa B, and natural killer cell-mediated cytotoxicity) were identified as regulators of these crosstalk genes. Among these 48 crosstalk genes and the chronic periodontitis-related genes in DisGeNET, C4A, C4B, CXCL12, FCGR3A, IL1B, and MMP3 were shared and identified as the most pivotal candidate links between periodontitis and AD. Conclusions. Exploration of available transcriptomic datasets revealed C4A, C4B, CXCL12, FCGR3A, IL1B, and MMP3 as the top candidate molecular linkage genes between periodontitis and AD.

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Sathyakam, P. Uma, P. S. Mallick und Paridhi Singh. „Geometry-Based Crosstalk Reduction in CNT Interconnects“. Journal of Circuits, Systems and Computers 29, Nr. 06 (19.08.2019): 2050094. http://dx.doi.org/10.1142/s0218126620500942.

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This paper proposes novel triangular cross-sectioned geometry of carbon nanotube (CNT) bundles for crosstalk and delay reduction in CNT bundle interconnects for VLSI circuits. First, we formulate the equivalent single conductor (ESC) transmission line models of the interconnects. Through SPICE analysis of the ESC circuits, we find the propagation delays of the proposed CNT bundles. Next, we model the capacitively coupled interconnects for crosstalk analysis. It is found that the coupling capacitance of triangular CNT bundle is 29% lesser than the traditionally used square CNT bundles. Further, the crosstalk-induced delay of triangular interconnects is found to be 30% lesser when compared to square bundle interconnects. The reduction in delay is found to increase as the number of CNTs in the bundle increases. So, we suggest that triangular CNT bundles are the most suitable candidates as global interconnects.

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von Allmen, Douglas C., Lauren J. Francey, Garrett M. Rogers, Marc D. Ruben, Aliza P. Cohen, Gang Wu, Robert E. Schmidt et al. „Circadian Dysregulation: The Next Frontier in Obstructive Sleep Apnea Research“. Otolaryngology–Head and Neck Surgery 159, Nr. 6 (11.09.2018): 948–55. http://dx.doi.org/10.1177/0194599818797311.

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Objective To review the effects of the circadian clock on homeostasis, the functional interaction between the circadian clock and hypoxia-inducible factors, and the role of circadian dysregulation in the progression of cardiopulmonary disease in obstructive sleep apnea (OSA). Data Sources The MEDLINE database was accessed through PubMed. Review Methods A general review is presented on molecular pathways disrupted in OSA, circadian rhythms and the role of the circadian clock, hypoxia signaling, crosstalk between the circadian and hypoxia systems, the role of the circadian clock in cardiovascular disease, and implications for practice. Studies included in this State of the Art Review demonstrate the potential contribution of the circadian clock and hypoxia in animal models or human disease. Conclusions Molecular crosstalk between the circadian clock and hypoxia-inducible factors has not been evaluated in disease models of OSA. Implications for Practice Pediatric OSA is highly prevalent and, if left untreated, may lead to cardiopulmonary sequelae. Changes in inflammatory markers that normally demonstrate circadian rhythmicity are also seen among patients with OSA. Hypoxia-inducible transcription factors interact with core circadian clock transcription factors; however, the interplay between these pathways has not been elucidated in the cardiopulmonary system. This gap in knowledge hinders our ability to identify potential biomarkers of OSA and develop alternative therapeutic strategies. A deeper understanding of the mechanisms by which OSA impinges on clock function and the impact of clock dysregulation on the cardiopulmonary system may lead to future advancements for the care of patients with OSA. The aim of this review is to shed light on this important clinical topic.

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Liu, Yike, Xuejian Liu, Are Osen, Yu Shao, Hao Hu und Yingcai Zheng. „Least-squares reverse time migration using controlled-order multiple reflections“. GEOPHYSICS 81, Nr. 5 (September 2016): S347—S357. http://dx.doi.org/10.1190/geo2015-0479.1.

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Reverse time migration (RTM) using multiples generates inherent crosstalk artifacts due to the interference among multiples of different orders. We have developed a method to remove such crosstalk. This approach first separates the recorded seismic data into primary reflections and multiples using the surface-related multiples elimination algorithm and then isolates the multiples into different orders. We can take any specified, say the [Formula: see text]th, order of multiples data as the incident wave and the next higher order multiples data, ([Formula: see text])th order, as the corresponding primary reflection data for imaging. We have applied the least-squares migration scheme to these two successive orders of multiples. Our method is denoted as least-squares RTM using controlled-order multiples (LSRTM-CM). Our numerical tests demonstrated that LSRTM-CM can significantly improve imaging quality compared with straightforward seismic imaging using multiples without multiples separation.

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Peer, Elisabeth, Suzana Tesanovic und Fritz Aberger. „Next-Generation Hedgehog/GLI Pathway Inhibitors for Cancer Therapy“. Cancers 11, Nr. 4 (15.04.2019): 538. http://dx.doi.org/10.3390/cancers11040538.

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The Hedgehog/Glioma-associated oncogene homolog (HH/GLI) signaling pathway regulates self-renewal of rare and highly malignant cancer stem cells (CSC), which have been shown to account for the initiation and maintenance of tumor growth as well as for drug resistance, metastatic spread and relapse. Efficacious therapeutic approaches targeting CSC pathways, such as HH/GLI signaling in combination with chemo, radiation or immunotherapy are, therefore, of high medical need. Pharmacological inhibition of HH/GLI pathway activity represents a promising approach to eliminate malignant CSC. Clinically approved HH/GLI pathway inhibitors target the essential pathway effector Smoothened (SMO) with striking therapeutic efficacy in skin and brain cancer patients. However, multiple genetic and molecular mechanisms resulting in de novo and acquired resistance to SMO inhibitors pose major limitations to anti-HH/GLI therapies and, thus, the eradication of CSC. In this review, we summarize reasons for clinical failure of SMO inhibitors, including mechanisms caused by genetic alterations in HH pathway effectors or triggered by additional oncogenic signals activating GLI transcription factors in a noncanonical manner. We then discuss emerging novel and rationale-based approaches to overcome SMO-inhibitor resistance, focusing on pharmacological perturbations of enzymatic modifiers of GLI activity and on compounds either directly targeting oncogenic GLI factors or interfering with synergistic crosstalk signals known to boost the oncogenicity of HH/GLI signaling.

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Dissertationen zum Thema "Crosstalk NEXT"

Pierrugues, Laurent. „Annuleur de Diaphonie-NEXT (Near End Crosstalk) et Modulation Clustering pour les systèmes ADSL (Asymetric Digital Subscriber Line)“. Cergy-Pontoise, 2005. http://www.theses.fr/2005CERG0295.

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Les travaux de cette thèse visent à améliorer la portée et le débit offerts sur la voie descendante d'une transmission ADSL. La première partie du mémoire détaille la chaîne de transmission ADSL, son canal de propagation ainsi que les bruits de diaphonie. La deuxième partie se focalise sur une solution diminuant l'impact du bruit NEXT chez l'abonné. A cet effet, un second capteur à « référence bruit seul » est introduit au récepteur et un algorithme par sous-porteuse maximise le SNR Une étude statistique confirment que ce système augmente significativement les performances. La troisième partie introduit la modulation «clustering » qui permet d'améliorer les performances sur de longues lignes quel que soit l'environnement de bruit. Cette modulation regroupe les tones, ne disposant pas d'un SNR suffisant pour accueillir une constellation « minimale », en « clusters » porteurs d'une même information. Par ce biais, la capacité inutilisée d'un symbole DMT s'avère réduite de près de 75%
This dissertation aims at improving ADSL downstream reach and rate. The first part details the transmission scheme, the propagation channel and crosstalk noises. The second part introduces and analyzes a NEXT crosstalk canceller based on a “noise alone reference” at the receiver. A per sub-carrier algorithm then optimizes each tone SNR. After a stochastic study and field performances, we observed that this solution increases the average tone SNR by 3dB. The last part presents a new method called Clustering Modulation which achieves rate and reach improvements irrespective of the noise environment. This technique collects unloaded tones into “clusters”, loaded with the same information. A cluster is equivalent to a virtual tone, carrying 2 bits of information and ensuring the mandatory bit error rate. By this simple tones aggregation the unused DMT capacity can be reduced up to 75%

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Hur, Young Sik. „Equalization and Near-End Crosstalk (NEXT) Noise Cancellation for 20-Gbit/sec 4-PAM Backplane Serial I/O Interconnections“. Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7522.

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A combined solution of the Feed-Forward Equalizer (FFE) and Near-End Crosstalk (NEXT) noise cancellation technique was suggested. The techniques increase data throughput and improve link quality in the 20-in FR4 legacy backplane application. Backplane channel loss and coupling noise were measured and characterized to develop the corresponding behavioral channel model. The receiver-side FFE with 4-tap Finite Impulse Response (FIR) filter structure was adopted as the optimum equalizer topology. The 4-tap FIR filter consists of tap delay line with tap-spacing 33 ps and linear tap-gain amplifiers. The tap coefficients were calculated with the Minimum-Mean-Squared-Error (MMSE) algorithm. A 0.18-um CMOS 4-tap FIR filter IC was designed and fabricated. The experiment results showed the 20-Gbit/sec 4-PAM and 10-Gbit/sec NRZ signal were successfully equalized for the 20-in FR4 legacy backplane channel. Moreover, the suggested NEXT noise cancellation technique consists of coarse- and fine-cancellation stages. The 0.18-um CMOS building block ICs such as 7-tap FIR filter, tunable active Pole-Zero (PZ) filter, and a temporal alignment delay line were fabricated. The experiment results showed that 6-dB Signal-to-Noise Ratio (SNR) improvement was achieved by the developed NEXT noise cancellation technique.

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Ogundapo, Olusegun. „High frequency Ethernet cabling analysis and optimization“. Thesis, De Montfort University, 2016. http://hdl.handle.net/2086/14148.

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This thesis provides analytical and forensic tools for data cabling, with particular focus on Ethernet cabling to assist designers and those involved in deployments in analyzing cable performance and the reasons behind the actual performance obtained. The need for higher bandwidth to accommodate increasing demand for multimedia services and data centers network infrastructure led to the formation of IEEE P802.3bq to create standards for 40GBASE-T over twisted pair cables. The 40GBASE-T is expected to offer bandwidth of up to 2000MHz over a maximum channel length of 30m. The research investigated means of predicting key performance parameters in Ethernet cabling standardization using the 40GBASE-T as an example. The performance parameters prediction method provided is equally applicable to ongoing and future high data rate Ethernet cabling standardization such as the 2.5/5GBASE-T and 50/100GBASE-T. Another problem in the Ethernet networking world is the availability of counterfeit and non-standards compliant twisted pair cables in the market. The significant amount of communications cables in the market containing copper clad aluminum cable or other non-standards compliant conductors disguised as Category 6 cables can pose serious problems to companies’ networks, the contractors or the installers. This is in view of the growing demand for internet of things (IOT) services that makes it imperative to have a reliable Ethernet driven communication network to support the required infrastructure. This thesis therefore, provides techniques that can be used to evaluate cables key performance parameters using the Feature Selective Validation method and the Kolmogorov-Smirnov (KS) test. The technique can help engineers avoid subjective judgement and make objective decisions in the selection of cables. The research provided a technique that can be used to reverse engineer impedance profile from the return loss measurement of Ethernet cables using genetic algorithms. The method can be applied in situations where time domain tests are inaccessible or only simple (magnitude) tests in the frequency domain are available and there is the need for impedance profiles of cables to evaluate their performance or physical integrity before or after installation. The method can also be useful where only simple (magnitude) tests are the only historical data available for the cables and facilities for time domain reflectometry measurements are inaccessible. This research also presented a method of evaluating and predicting NEXT in unshielded twisted pair (UTP) using Category 6 cables as an example. The results obtained from the evaluation were used to provide crosstalk parameters for fast NEXT prediction in Category 6 (UTP) cables. The research used the measured NEXT of three Category 6 (UTP) cables from different manufacturers for evaluation and validation. The evaluation and modeling method can thus be useful to engineers investigating NEXT in the design of data communication systems.

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Kosmák, Václav. „Analýza stávajícího kluzného kontaktu, kvalitativních a funkčních vlastností "kroužkostrojů"“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-318099.

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Thesis deals with the analysis of the sliding contact in the ring mill. It focuses on the assessment of the effect of the current load on the sliding contact, the assessment of the signal transmission quality from the static to the rotara part of the ring contact slide contact.

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Rada, Dominik. „Přenosová technologie G.mgfast“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442370.

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The master thesis deals with G.fast and G.mgfast transmission technologies, including their parameters. The work deals with the principle of vector DMT modulation and the possibility of time duplex TDD and full-duplex FDX in two-way communication used in these technologies. The following is a description of the line using the KHM model, which is suitable for simulations in the transmission band using G.fast and G.mgfast technologies. Subsequently, the disturbing effects of crosstalk at the near end of NEXT and the far end of FEXT and their elimination with these technologies are discussing. Part of the work explains supporting calculations to determine the SNR and bit allocation to calculate the baud rate. The work describes the methods of compensation of crosstalk FEXT and NEXT, which affect the resulting baud rate. The work also includes an application for simulation of transmission speed as a function of distance for G.fast and G.mgfast technologies, allowing changing input parameters and adjusting the transmission bandwidth based on G.9700 and G.9701 standards. Also, in work, an application is created to display the compensation of the influence of the transmitted signal crosstalk FEXT and NEXT, which allow the import of measured crosstalk between individual participants. The issue of influencing crosstalk for accurate measurements in the laboratory is also discussing. An application in the MATLAB environment is creating to display the measured characteristics.

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Čermák, Josef. „Modelování rušení pro xDSL“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217281.

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This work is focused on the subject of the interference modelling for xDSL technologies. First, the xDSL technologies are explained. Following is the presentation and description of the different kinds of the xDSL technologies. The next part deals with the basic parameters of metallic cable lines – especially the primary and secondary parameters. Nowadays wider bandwidths are used for the achievement of higher data transmission rates. During a higher frequency signal transmission a more intensive line attenuation appears. To identify the transfer characteristics of the lines while using an xDSL system, mathematic models of transmission lines are applied. That is why these mathematic models are dealt with in the next chapter. At the end of this section the mathematic models are compared using the modular and phase characteristics. The main aim of the work is to describe the different impacts which influence the efficiency of the xDSL systems. First, the causes interfering from the inside of the cable are deeply explained: Near End Crosstalk (NEXT), Far End Crosstalk (FEXT), Additive White Gaussian Noise (AWGN). Following is the explanation of the external interfering impacts: Radio Frequency Interference (RFI) and Impulse Noise. The next goal of this thesis is a design of a workstation for the tests of spectral features and the efficiency of the xDSL systems. The work also presents a designed GUI application and its description. The GUI application is an instrument for the choice or data entry of the final interference. The last chapter describes a realization of a measurement and shows the measured characteristics which were recorded on the ADSL tester and oscilloscope.

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Novotný, František. „Analýza a modelování přeslechů“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220322.

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The thesis concerns the problem of interference modelling for xDSL technologies and Ethernet. The introduction describes the origin of crosstalk, that arise during the operation of the systems and the physical properties of the lines, therefore, the next section describes the properties of the primary and secondary parameters of the homogenous line and their modelling. In order to achieve higher data rates on the metallic line, systems with larger frequency spectrum are applied, resulting in a greater attenuation of the line. This issue and the characteristics determination of the transmission systems are subjects of the mathematical models, which are divided according to the modelling of primary or secondary parameters. The main goal of this work is to describe the effects which influence the performance of data transfer via xDSL and Ethernet technology focusing on internal and external disturbances acting on the cable lines. This is the crosstalk at the near and far end, adaptive white noise, radio frequency interference RFI and impulse noise. Following part of the thesis deals with the properties of xDSL technologies, specifically ADSL2+ and VDSL2 and Ethernet. Another aim is to design applications which enable to test the performance of xDSL and Ethernet transmission systems with its own award simulations interference. The conclusion describes the design and implementation of laboratory experiments for measuring of the efficiency and spectral properties of xDSL. The proposed laboratory protocols are annexed to this thesis, including the measured waveforms.

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Nongpiur, Rajeev Conrad. „Near-end crosstalk cancellation in xDSL systems“. Thesis, 2005. http://hdl.handle.net/1828/1296.

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In xDSL technology, high-speed data are transferred between the central office and the customers, or between two or more central offices using unshielded telephone lines. A major impairment that hinders the increase in data-rate through the twisted-pair line is nearend crosstalk (NEXT) between the adjacent twisted pairs. DSL systems with overlapping transmit and receive spectra are susceptible to NEXT which significantly increases the interference noise in the received signal and also reduces the reliability and availablity of the system. One way to cancel the NEXT in the received signal is to deploy adaptive filters. However, if adaptive filters are deployed to cancel every possible NEXT signal from the other twisted pairs, the computational complexity increases in proportion to N2 where N is the number of twisted pairs in the bundle and, therefore, it becomes prohibitive even for small values of N. In this dissertation, four new methods for NEXT reduction are proposed. The methods aim at reducing computational complexity while maintaining speed and performance. In Chapter 3 an efficient NEXT cancellation system is proposed. The new system first detects the NEXT signals present in the received signal and then assigns adaptive filters to cancel the most significant NEXT signals detected. The detection process uses a fast and efficient algorithm that estimates the crosscorrelation between the transmitted and received signal. By subtracting the adaptive filter estimates of the NEXT signals that have been detected and assigned adaptive filters for cancellation, the magnitude of smaller NEXT signals can be estimated more accurately during the NEXT detection stage. The new system offers an overall computational complexity of order N. This represents a large reduction in the computational effort relative to that in previous NEXT cancellation system which offer computational complexities of order N2. In Chapter 4, the NEXT cancellation system proposed in Chapter 3 is implemented using frequency-domain least-mean-square (FDLMS) adaptive filters to cancel the NEXT signals. Several schemes for assigning the adaptive filter step sizes are explored. It has been found that by making the step sizes proportional to the magnitude of the NEXT signals during the initial phases of adaptation and then making them all equal during the later phases, the convergence rate can be significantly improved. And by returning after convergence to step sizes that are proportional to the magnitudes of the NEXT signals, a much better tracking performance is achieved. In Chapter 5, a new technique that reduces the computational complexity in adaptive filters for NEXT cancellation is proposed. In this technique, the filter length of each adaptive filter is adjusted according to the strength of the NEXT signal. Since the NEXT signals from the other twisted pairs are typically of different magnitudes, using such a technique leads to a significant reduction in the total number of filter taps when compared with fixedlength adaptive filters. The NEXT cancellation is started by using adaptive filters with minimum filter lengths. As the adaptation progresses, the filter length of each adaptive filter is adjusted according to the magnitude of the NEXT signal. Upon convergence, another algorithm is deployed which readjusts the filter lengths of those adaptive filters that are too long or too short. Chapter 6 deals with another new method to mitigate NEXT based on a wavelet denoising technique. In xDSL systems, the received signal typically has greater power in the lower end of the frequency spectrum whereas the NEXT signal has greater power in the higher end. The wavelet technique takes advantage of the difference between the power spectrum of the received signal and that of the NEXT to mitigate the crosstalk noise. In addition, the method has a low computational complexity which makes it fast, efficient, and well suited for high data-rate applications.

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Buchteile zum Thema "Crosstalk NEXT"

Ganz, Carl. „Crosstab Reports and OLAP“. In Real World Enterprise Reports Using VB6 and VB .NET, 385–440. Berkeley, CA: Apress, 2003. http://dx.doi.org/10.1007/978-1-4302-0770-2_8.

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„Optical Transport Network“. In Optical Transmission and Networks for Next Generation Internet Traffic Highways, 1–27. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-6575-0.ch001.

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Different linear effects that occur in the physical medium are studied and analyzed in this chapter. Specifically, much attention is paid to fiber attenuation, Amplified Spontaneous Emission (ASE) noise due to optical amplifiers, and fiber dispersive effects that cause pulse broadening, which may represent a serious problem in high-speed optical transmission systems. In order to reduce fiber dispersive effects effectively, dispersion compensation fiber is employed. Other effects such as linear crosstalk, which causes distortion and interferes with the filtered channel, can be reduced by optimizing the optical filter bandwidth and shape to obtain a compromise between WDM linear crosstalk and filter induced intersymbol interference (ISI).

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„SCM-WDM PONs in Presence of XPM and GVD“. In Optical Transmission and Networks for Next Generation Internet Traffic Highways, 97–120. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-6575-0.ch005.

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In this chapter, a semi-analytical approach is used to evaluate and analyse the performance limitation of a SCM-WDM Passive Optical Network (PON) in the presence of Cross Phase Modulation (XPM) and Group Velocity Dispersion (GVD). In this context, a general expression for electrical average crosstalk noise power due to XPM and GVD was derived to measure the system performance for increasing number of WDM channels. Using the expression, it is found that XPM and GVD causes crosstalk in the system and imposes a power penalty as the WDM channels increases for a given channel spacing and modulating frequency. These results are extended to show that the system can be optimized to achieve a minimum BER of 10-9 by controlling the channel spacing and modulating frequency as the number of WDM channels increases.

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Srivastava, Ruby. „Transformation of Drug Discovery towards Artificial Intelligence: An in Silico Approach“. In Density Functional Theory - Recent Advances, New Perspectives and Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99018.

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Computational methods play a key role in the design of therapeutically important molecules for modern drug development. With these “in silico” approaches, machines are learning and offering solutions to some of the most complex drug related problems and has well positioned them as a next frontier for potential breakthrough in drug discovery. Machine learning (ML) methods are used to predict compounds with pharmacological activity, specific pharmacodynamic and ADMET (absorption, distribution, metabolism, excretion and toxicity) properties to evaluate the drugs and their various applications. Modern artificial intelligence (AI) has the capacity to significantly enhance the role of computational methodology in drug discovery. Use of AI in drug discovery and development, drug repurposing, improving pharmaceutical productivity, and clinical trials will certainly reduce the human workload as well as achieving targets in a short period of time. This chapter elaborates the crosstalk between the machine learning techniques, computational tools and the future of AI in the pharmaceutical industry.

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Konferenzberichte zum Thema "Crosstalk NEXT"

Keller, Graziela R., Zhipeng Wang, Aisheng Wu und Xiaoxiong J. Xiong. „Aqua MODIS electronic crosstalk survey from Moon observations“. In Sensors, Systems, and Next-Generation Satellites, herausgegeben von Roland Meynart, Steven P. Neeck, Haruhisa Shimoda, Toshiyoshi Kimura und Jean-Loup Bézy. SPIE, 2017. http://dx.doi.org/10.1117/12.2277972.

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Ramachandra Rao, Padmakumar, Koen De Munck, Kyriaki Minoglou, Joeri De Vos, Deniz Sabuncuoglu und Piet De Moor. „Hybrid backside illuminated CMOS image sensors possessing low crosstalk“. In Sensors, Systems, and Next-Generation Satellites XV. SPIE, 2011. http://dx.doi.org/10.1117/12.901234.

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Vasa, Mallikarjun, Bhyrav Mutnury, Vijender Kumar, Gowri Anand und Sanjay Kumar. „High speed interconnect crosstalk characterization for next generation servers“. In 2016 International Conference on ElectroMagnetic Interference & Compatibility (INCEMIC). IEEE, 2016. http://dx.doi.org/10.1109/incemic.2016.7921459.

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Wilson, Truman, Ashish Shrestha und Xiaoxiong J. Xiong. „Electronic crosstalk impact assessment in the Terra MODIS mid-wave infrared bands“. In Sensors, Systems, and Next-Generation Satellites, herausgegeben von Roland Meynart, Steven P. Neeck, Haruhisa Shimoda, Toshiyoshi Kimura und Jean-Loup Bézy. SPIE, 2017. http://dx.doi.org/10.1117/12.2277953.

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Wilson, John, und Dan Oh. „Active crosstalk cancellation for next-generation single-ended memory interfaces“. In 2011 IEEE 61st Electronic Components and Technology Conference (ECTC). IEEE, 2011. http://dx.doi.org/10.1109/ectc.2011.5898514.

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Huang, Yezi, Thomas Magesacher, Eduardo Medeiros, Chenguang Lu, Per-Erik Eriksson und Per Odling. „Rate-Boosting Using Strong Crosstalk in Next Generation Wireline Systems“. In GLOBECOM 2015 - 2015 IEEE Global Communications Conference. IEEE, 2015. http://dx.doi.org/10.1109/glocom.2015.7417753.

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Sun, Junqiang, und Menghua Wang. „Crosstalk effect and its mitigation in MODIS and VIIRS thermal emissive bands (Conference Presentation)“. In Sensors, Systems, and Next-Generation Satellites, herausgegeben von Roland Meynart, Steven P. Neeck, Haruhisa Shimoda, Toshiyoshi Kimura und Jean-Loup Bézy. SPIE, 2017. http://dx.doi.org/10.1117/12.2278727.

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Weng, Pei-Yang, Ching-Huei Chen, Chang-Hsien Chen, Chun-Lin Liao, Tzong-Lin Wu und Bhyrav Mutnury. „Factors Affecting Near-End Crosstalk (NEXT) in High Speed Serial Links“. In 2018 15th International Conference on ElectroMagnetic Interference & Compatibility (INCEMIC). IEEE, 2018. http://dx.doi.org/10.1109/incemic.2018.8704575.

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Acatauassu, Diogo, und Joao C. W. A. Costa. „Refining worst-case crosstalk models for the next generation broadband over copper“. In 2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC). IEEE, 2017. http://dx.doi.org/10.1109/imoc.2017.8121067.

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