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Dissertations / Theses on the topic 'Mismatched Filter'

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1

Chatzitheodoridi, Maria-Elisavet. "Processing Optimization for Continuous Phase Modulation-based Joint Radar-Communication System : Application on Imaging Radar." Electronic Thesis or Diss., université Paris-Saclay, 2023. http://www.theses.fr/2023UPAST022.

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En raison de la croissance continue des applications électromagnétiques, le spectre devient de plus en plus encombré. Une solution possible à ce problème consiste à créer des systèmes radar-communication joints qui utilisent la même bande passante pour réaliser les deux applications. Dans cette thèse, nous nous intéressons à un système exploitant une forme d'onde issue du monde des communications pour réaliser conjointement de l'imagerie radar et un transfert d'information. Pour cela, parmi la multitude de codes existants, nous avons choisi d'utiliser des codes modulés continument en phase CPM
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Löwenborg, Per. "Asymmetric filter banks for mitigation of mismatch errors in high-speed analog-to-digital converters /." Linköping : Univ, 2002. http://www.bibl.liu.se/liupubl/disp/disp2002/tek787s.pdf.

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3

Nguyen, Hien. "Robust Steering Vector Mismatch Techniques for Reduced Rank Adaptive Array Signal Processing." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/29238.

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The research presented in this dissertation is on the development of advanced reduced rank adaptive signal processing for airborne radar space-time adaptive processing (STAP) and steering vector mismatch robustness. This is an important area of research in the field of airborne radar signal processing since practical STAP algorithms should be robust against various kinds of mismatch errors. The clutter return in an airborne radar has widely spread Doppler frequencies; therefore STAP, a two-dimensional adaptive filtering algorithm is required for effective clutter and jamming cancellation. Rea
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Aktop, Onur. "Optimization Of Doppler Processing By Using Bank Of Matched Filters." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/12606420/index.pdf.

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In radars, matched filters are used in the receiver of the system. Since the target velocity is not known a priori, degradation occurs due to mismatch of the return signal and the matched filter. The performance of the radar can be improved by using a bank of matched filters. The first topic investigated in this work is optimization of the bank of matched filter structure. Two methods are proposed for the design of the parallel filter structure and computations are performed with both methods. The output signal of a radar receiver filter consists not only of the main peak from the target but
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Sigron, Dario. "Fehlende Fristen- und Währungskongruenz als Ursache von Finanzmarktkrisen in Schwellenländern Theoretischer Hintergrund und wirtschaftspolitische Handlungsalternativen /." St. Gallen, 2008. http://www.biblio.unisg.ch/org/biblio/edoc.nsf/wwwDisplayIdentifier/00287565001/$FILE/00287565001.pdf.

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6

Steckenrider, John Josiah. "Simultaneous Estimation and Modeling of State-Space Systems Using Multi-Gaussian Belief Fusion." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/97583.

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This work describes a framework for simultaneous estimation and modeling (SEAM) of dynamic systems using non-Gaussian belief fusion by first presenting the relevant fundamental formulations, then building upon these formulations incrementally towards a more general and ubiquitous framework. Multi-Gaussian belief fusion (MBF) is introduced as a natural and effective method of fusing non-Gaussian probability distribution functions (PDFs) in arbitrary dimensions efficiently and with no loss of accuracy. Construction of some multi-Gaussian structures for potential use in MBF is addressed. Furtherm
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7

Vengattaramane, Kameswaran. "Efficient Reconstruction of Two-Periodic Nonuniformly Sampled Signals Applicable to Time-Interleaved ADCs." Thesis, Linköping University, Department of Electrical Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-6253.

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<p>Nonuniform sampling occurs in many practical applications either intentionally or unintentionally. This thesis deals with the reconstruction of two-periodic nonuniform signals which is of great importance in two-channel time-interleaved analog-to-digital converters. In a two-channel time-interleaved ADC, aperture delay mismatch between the channels gives rise to a two-periodic nonuniform sampling pattern, resulting in distortion and severely affecting the linearity of the converter. The problem is solved by digitally recovering a uniformly sampled sequence from a two-periodic nonuniformly s
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8

Pelteku, Altin E. "Adaptive Suppression of Interfering Signals in Communication Systems." Digital WPI, 2013. https://digitalcommons.wpi.edu/etd-dissertations/138.

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The growth in the number of wireless devices and applications underscores the need for characterizing and mitigating interference induced problems such as distortion and blocking. A typical interference scenario involves the detection of a small amplitude signal of interest (SOI) in the presence of a large amplitude interfering signal; it is desirable to attenuate the interfering signal while preserving the integrity of SOI and an appropriate dynamic range. If the frequency of the interfering signal varies or is unknown, an adaptive notch function must be applied in order to maintain adequate
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9

Sarkar, Indranil. "Computationally efficient mismatched filter design for pulse compression codes." 2007. http://proquest.umi.com/pqdweb?did=1515415281&sid=15&Fmt=2&clientId=39334&RQT=309&VName=PQD.

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Thesis (Ph.D.)--State University of New York at Buffalo, 2007.<br>Title from PDF title page (viewed on Feb. 13, 2009) Available through UMI ProQuest Digital Dissertations. Thesis adviser: Fam, Adly T. Includes bibliographical references.
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10

Steffener, Jason. "Characterization of mismatch between behavioral stimuli and FRMI data using the Kalman filter." Thesis, 2005. http://library1.njit.edu/etd/fromwebvoyage.cfm?id=njit-etd2005-086.

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11

Lin, Wen-Kai, and 林文凱. "Applied Kalman Filter and Model Mismatch Self-Tuning Method to Run-to-Run Control." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/72364493345045699605.

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碩士<br>國立交通大學<br>機械工程學系<br>100<br>In the last few years, Run-to-Run (RtR) control techniques have been developed and used to semiconductor manufacturing processes to maintain process targets and improve the yield of products. Among the RtR controllers, Exponentially Weighted Moving Average (EWMA), double-EWMA and Predicted Correct Control (PCC) are useful methods for online RtR estimation. However, incorrect selection of the RtR control parameters can have the opposite effect on the controlled process output. Conventional RtR controllers may fail in satisfying performance requirement especially
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12

Zhang, Bo. "Delta-sigma modulators employing continuous-time circuits and mismatch-shaped DACs." Thesis, 1996. http://hdl.handle.net/1957/34675.

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Delta-sigma modulators are currently a very popular technique for making high-resolution analog-to-digital and digital-to-analog converters. These oversampled data converters have several advantages over conventional Nyquist-rate converters, including an insensitivity to many analog component imperfections, a simpler antialiasing filter and reduced accuracy requirements in the sample and hold. Though the initial uses of delta-sigma modulators were in the audio field, the development of bandpass modulators opened up the application range to radar systems, digital communication systems and instr
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13

Giang, Doan Ngoc, and 團玉江. "Design of Pulse Shaping Filter and Compensation Design of Transmitter IQ Mismatch and DC Voltage Offset for 10Gbps Single Carrier Baseband at 60GHz Band." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/qumsda.

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碩士<br>國立交通大學<br>電機資訊國際學程<br>108<br>In digital wireless communication, the performance of the system is measured by two important measurement values which are Error Vector Magnitude (EVM) for the transmitter and Bit Error Rate (BER) for the receiver. Pulse Shaping Filter (PSF) is one of the essential components in the digital communication system due to its benefit of reducing bandwidth frequency of the transmitted signal and eliminating Inter-Symbol Interference (ISI). However, because of the limited number of coefficients that can be implemented in the real circuit, PSF usually introduces non
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14

AlSuhaili, khalid. "Communications Over Multiple Best Singular Modes of Reciprocal MIMO Channels." Thesis, 2010. http://hdl.handle.net/1974/5935.

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We consider two transceivers equipped with multiple antennas that intend to communicate i.e. both of which transmit and receive data in a TDD fashion. Assuming that the responses of the physical communication channels between these two nodes are linear and reciprocal (time invariant or with very slow time variations), and by exploiting the closed loop conversation between these nodes, we have proposed efficient algorithms allowing to adaptively identify the Best Singular Mode (BSM) of the channel (those algorithms are for training, blind, and semi-blind channel identification). Unlike other pr
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15

Olivier, Laurentz Eugene. "Peripheral control tools for a run-of-mine ore milling circuit." Diss., 2012. http://hdl.handle.net/2263/26420.

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Run-of-mine ore milling circuits are generally difficult to control owing to the presence of strong external disturbances, poor process models and the unavailability of important process variable measurements. These shortcomings are common for processes in the mineral-processing industry. For processes that fall into this class, the peripheral control tools in the control loop are considered to be as important as the controller itself. This work addresses the implementation of peripheral control tools on a run-of-mine ore milling circuit to help overcome the deteriorated control performance re
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16

Forbes, Travis Michael 1986. "Circuit techniques for programmable broadband radio receivers." Thesis, 2013. http://hdl.handle.net/2152/28712.

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The functionality provided by mobile devices such as cellular phones and tablets continues to increase over the years, with integration of an ever larger number of wireless standards within a given device. In several of these designs, each standard supported by a device requires its own IC receiver to be mounted on the device’s PCB. In multistandard and multimode radios, it is desirable to integrate all receivers onto the same IC as the digital processors for the standards, in order to reduce device cost and size. Ideally all the receivers should also share a single signal chain. Since each st
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