Thematische Bibliographien / Crosstalk FEXT

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Auswahl der wissenschaftlichen Literatur zum Thema „Crosstalk FEXT“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 7. Februar 2022

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Zeitschriftenartikel zum Thema "Crosstalk FEXT"

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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Lin, Ding-Bing, Ariana Purnomo und Chung-Pin Huang. „Crosstalk Reduction on Delay Line with Rectangular-Patches (RPs) Design“. Applied Computational Electromagnetics Society 36, Nr. 1 (27.02.2021): 10–19. http://dx.doi.org/10.47037/2020.aces.j.360102.

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In this paper, a novel helix delay line with RPs structures is proposed to investigate the performance of crosstalk reduction. In the past, conventional delay lines consist of equal-length parallel unit lines which are closely packed to minimize the fabricated cost and routing area. All spacing between the adjacent parallel unit lines of delay lines should be smaller. When the operating signal frequency ups to the GHz level, the electromagnetic noise has become a dominant issue coupling from adjacent lines. It is called as a crosstalk source. The crosstalk may affect system-level timing. Besides, it causes error switching of logic gates that will reduce the signal quality. The feature of proposed helix delay line is that the far-end crosstalk (FEXT) is a dominated noise that accumulates at the receiving end. RPs structures are added and aligned at the center of the two parallel adjacent unit lines of the proposed helix delay line, which are used to reduce the difference between inductive and capacitive coupling coefficient ratios, and to reduce FEXT that maintains the signal integrity (SI) quality on receiving end.

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Song, Kyunghwan, Jongwook Kim, Hyunwoong Kim, Seonghi Lee, Jangyong Ahn, Andres Brito, Hyunsik Kim, Minho Park und Seungyoung Ahn. „Modeling, Verification and Signal Integrity Analysis of High-Speed Signaling Channel with Tabbed Routing in High Performance Computing Server Board“. Electronics 10, Nr. 13 (01.07.2021): 1590. http://dx.doi.org/10.3390/electronics10131590.

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It is necessary to reduce the crosstalk noise in high-speed signaling channels. In the channel routing area, the tabbed routing pattern is used to mitigate far-end crosstalk (FEXT), and the electrical length is controlled with a time domain reflectometer (TDR) and time domain transmission (TDT). However, unlike traditional channels having uniform width and space, the width and space of tabbed routing changes by segment, and the capacitance and inductance values of tabbed routing also change. In this paper, we propose a tabbed routing equivalent circuit modeling method using the segmentation approach. The proposed model was verified using 3D EM simulation and measurement results in the frequency domain. Based on the calculated inductance and capacitance parameters, we analyzed the insertion loss, FEXT, and self-impedance in the frequency domain, and TDT and FEXT in the time domain, by comparing the values of these metrics with and without tabbed routing. Using the proposed tabbed routing model, we analyzed tabbed routing with variations of design parameters based on self- and mutual-capacitance and inductance.

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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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Singh, Saumya. „Analysis of Signal Processing for Gigabit Rate Wireline Communication“. International Journal for Research in Applied Science and Engineering Technology 9, Nr. VI (15.06.2021): 1181–84. http://dx.doi.org/10.22214/ijraset.2021.35165.

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In this paper we mainly focus on achieving higher speed data which is about 1Gb/s over short copper loops using G.Fast technology. The use of TDD and higher bandwidth are two key features in G.Fast. Short twisted pair cable models are used to operate at relatively wider bandwidth. At higher frequencies, the problem of FEXT crosstalk becomes dominant. So to overcome these issues we are using different crosstalk cancellation techniques using various cables which provide different data rates at different frequencies and distances. Performance analysis of various crosstalk cancelation techniques has been done in this paper.

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Gao, Yin Han, Tian Hao Wang, Kai Yu Yang, Jun Dong Zhang, Jin Yu und Liu Yang. „The Analysis of Automotive Wiring Harness Dynamic Crosstalk“. Applied Mechanics and Materials 543-547 (März 2014): 817–20. http://dx.doi.org/10.4028/www.scientific.net/amm.543-547.817.

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Since the installation and strapping of the harness, and the vehicle motion state of the automotive is different. The crosstalk automotive wire harness is not a fixed value, but a certain dynamic range in the actual situation. Through the analysis of the factors of influence cable crosstalk can draw a conclusion that the cable relative position and disturbed line termination impedance is a major factor in the production of dynamic change. We analyze the dynamic range of crosstalk of 14 core wire harness model by using a statistical method, as a result of the change of the relative position of cable far-end crosstalk (FEXT) range within 1 dB, but when the disturbed line termination impedance changes from 50Ω to 1000Ω, the cable far-end crosstalk range reached 15 dB. It provides reference basis for the automotive wiring harness electromagnetic compatibility design.

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Zafaruddin, S. M., Shankar Prakriya und Surendra Prasad. „Iterative Receiver Based on SAGE Algorithm for Crosstalk Cancellation in Upstream Vectored VDSL“. ISRN Communications and Networking 2011 (30.06.2011): 1–15. http://dx.doi.org/10.5402/2011/586574.

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We propose the use of an iterative receiver based on the Space Alternating Generalized Expectation maximization (SAGE) algorithm for crosstalk cancellation in upstream vectored VDSL. In the absence of alien crosstalk, we show that when initialized with the frequency-domain equalizer (FEQ) output, the far-end crosstalk (FEXT) can be cancelled with no more real-time complexity than the existing linear receivers. In addition, the suggested approach does not require offline computation of the channel inverse and thus reduces the receiver complexity. In the presence of alien crosstalk, there is a significant gap between the rate performance of the linear receivers as compared with the single-user bound (SUB). The proposed receiver is shown to successfully bridge this gap while requiring only a little extracomplexity. Computer simulations are presented to validate the analysis and confirm the performance of the proposed receiver.

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Harachi, Mio, Kenta Masui, Yukinori Okamura, Ryota Tsukui, Paul Mischel und Noriyuki Shibata. „mTOR Complexes as a Nutrient Sensor for Driving Cancer Progression“. International Journal of Molecular Sciences 19, Nr. 10 (21.10.2018): 3267. http://dx.doi.org/10.3390/ijms19103267.

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Recent advancement in the field of molecular cancer research has clearly revealed that abnormality of oncogenes or tumor suppressor genes causes tumor progression thorough the promotion of intracellular metabolism. Metabolic reprogramming is one of the strategies for cancer cells to ensure their survival by enabling cancer cells to obtain the macromolecular precursors and energy needed for the rapid growth. However, an orchestration of appropriate metabolic reactions for the cancer cell survival requires the precise mechanism to sense and harness the nutrient in the microenvironment. Mammalian/mechanistic target of rapamycin (mTOR) complexes are known downstream effectors of many cancer-causing mutations, which are thought to regulate cancer cell survival and growth. Recent studies demonstrate the intriguing role of mTOR to achieve the feat through metabolic reprogramming in cancer. Importantly, not only mTORC1, a well-known regulator of metabolism both in normal and cancer cell, but mTORC2, an essential partner of mTORC1 downstream of growth factor receptor signaling, controls cooperatively specific metabolism, which nominates them as an essential regulator of cancer metabolism as well as a promising candidate to garner and convey the nutrient information from the surrounding environment. In this article, we depict the recent findings on the role of mTOR complexes in cancer as a master regulator of cancer metabolism and a potential sensor of nutrients, especially focusing on glucose and amino acid sensing in cancer. Novel and detailed molecular mechanisms that amino acids activate mTOR complexes signaling have been identified. We would also like to mention the intricate crosstalk between glucose and amino acid metabolism that ensures the survival of cancer cells, but at the same time it could be exploitable for the novel intervention to target the metabolic vulnerabilities of cancer cells.

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„Multi-Pair Cable Measurements for 5G Indoor Service Provisioning“. Journal of Networking and Network Applications 1, Nr. 1 (2021): 28–39. http://dx.doi.org/10.33969/j-nana.2021.010104.

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This paper considers the 5G new radio (NR) indoor service provisioning scenario where the CPRI link terminates at remote radio unit (RRU) in the building and multi-pair cable, i.e. CAT-5, is used to provide connectivity between distributed antenna unit (DAU) and RRU. The paper focuses on the de-tailed methodology for multi-pair copper channel measurement including measurement equipment specifications, their respective settings, measurement parameters i.e. characteristics impedance, insertion loss (IL), far-end-crosstalk (FEXT) and near-end-crosstalk (NEXT). The measurements include the cables for next-generation multi-pair system, where multi-pair cables, i.e. CAT-5 cables, are used from the RRU to the DAUs in a building. Conventionally, many multi-pair cables share the same duct in a building and interfere with each other, therefore two parallel multi-pair CAT-5 cables of 50m each are considered for the measurement scenario. This setup result in 4 twisted pairs terminate at each DAU and this configuration is termed as next-generation multi-pair MIMO (NGMM). The number of twisted pairs is increased by using the Phantom mode circuit connected to the opposite ends of each CAT-5 cable and the resulting configuration is called next-generation multi-pair super MIMO (NGMSM). The cable parameters have been measured for frequencies up to 1 GHz and 250 MHz for NGMM and NGMSM, respectively. DL data rate of each configuration is examined by applying conventional block diagonalization.

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Schlich, R., H. Sell und J. Eckel. „VEGF und CD36 als Schlüsselmoleküle im Crosstalk zwischen perivaskulärem Fett und humanen glatten Muskelzellen“. Diabetologie und Stoffwechsel 5, S 01 (April 2010). http://dx.doi.org/10.1055/s-0030-1254014.

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Dissertationen zum Thema "Crosstalk FEXT"

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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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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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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Welch, Joshua Adam. „Characterization and reduction of line-to-line crosstalk on printed circuit boards“. Thesis, 2018. http://hdl.handle.net/2097/39286.

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Master of Science
Department of Electrical and Computer Engineering
William B. Kuhn
An important concern for high speed circuit designs is that of crosstalk and electromagnetic interference. In PCB board-level designs, crosstalk at microwave frequencies may result from imperfections in shielding of PCB interconnects or more generally transmission lines. Several studies have been done to characterize and improve the isolation between PCB transmission lines for both digital and RF circuits. For example, previous studies in the microwave region have examined the effect that line type, line length, and separation have on crosstalk and suggest that without full shielding, the upper limit of isolation is on the order of 60dB for traditional board-level lines [1]. In order to more fully characterize crosstalk and improve isolation above 60 dB, this thesis studies signal-to-ground-plane separation, considers advanced line types, and examines the effect of 3D shielding. Results are presented from 100MHz to 30GHz for the traditional transmission line structures of microstrip, CPW, differential pair and CPW differential pair. This study shows that with a halving of distance between signal and ground planes, isolation between transmission lines can be reduced by as much as 20dB, making this one of the best ways to improve performance. Advanced methods of shielding are then presented. Direct launch stripline and single-sided CPW improve upon existing crosstalk reduction techniques, while split shielding and ablation of dielectric PCB material are also proposed. The data and additional crosstalk reduction techniques discussed in this thesis serve two purposes. One: with a more complete understanding of the effects that transmission line types and parameters have on crosstalk, engineers can quickly identify potential crosstalk issues and resolve them before manufacturing. Second, this thesis presents the engineer with four new additional techniques that may become available in advanced manufacturing environments. Such techniques can further reduce crosstalk and may allow for isolation values to approach 100 dB at the PC board level.

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Konferenzberichte zum Thema "Crosstalk FEXT"

Harjani, R., G. Talbot, Shubha Bommalingaiahnapallya, Mahmoud Rezci Ahmadi und Kin-Joe Sham. „FEXT Crosstalk Cancellation for High-Speed Serial Link Design“. In Proceedings of the IEEE 2006 Custom Integrated Circuits Conference. IEEE, 2006. http://dx.doi.org/10.1109/cicc.2006.320971.

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Wang, Yijiao, Xiaoyan Liu, Yunxiang Yang, Jieyu Qin, Gang Du und Jinfeng Kang. „Analysis of electrostatic crosstalk in 3D vertical NAND Charge Trapping Memory with junctionless GAA nanowire FET“. In 2012 IEEE 11th International Conference on Solid-State and Integrated Circuit Technology (ICSICT). IEEE, 2012. http://dx.doi.org/10.1109/icsict.2012.6466747.

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Wang, Jianjing, Dawei Liu, Harry C. P. Dymond, Jeremy J. O. Dalton und Bernard H. Stark. „Crosstalk suppression in a 650-V GaN FET bridgeleg converter using 6.7-GHz active gate driver“. In 2017 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2017. http://dx.doi.org/10.1109/ecce.2017.8096395.

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