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Dissertations / Theses on the topic 'Least mean square (LMS) algorithm'

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Published: 4 June 2025
Last updated: 1 August 2025

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1

Wang, Dongmei. "Least mean square algorithm implementation using the texas instrument digital signal processing board." Ohio University / OhioLINK, 1999. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1175279376.

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2

Yapici, Yavuz. "A Bidirectional Lms Algorithm For Estimation Of Fast Time-varying Channels." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613220/index.pdf.

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Effort to estimate unknown time-varying channels as a part of high-speed mobile communication systems is of interest especially for next-generation wireless systems. The high computational complexity of the optimal Wiener estimator usually makes its use impractical in fast time-varying channels. As a powerful candidate, the adaptive least mean squares (LMS) algorithm offers a computationally efficient solution with its simple first-order weight-vector update equation. However, the performance of the LMS algorithm deteriorates in time-varying channels as a result of the eigenvalue disparity, i.
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3

Lovstedt, Stephan P. "Improving Performance of the Filtered-X Least Mean Square Algorithm for Active Control of Noise Contatining Multiple Quasi-Stationary Tones." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2290.pdf.

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4

Callahan, Michael J. "Estimating Channel Identification Quality in Passive Radar Using LMS Algorithms." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1503508289044109.

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5

Gao, Wei. "Kernel LMS à noyau gaussien : conception, analyse et applications à divers contextes." Thesis, Nice, 2015. http://www.theses.fr/2015NICE4076/document.

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L’objectif principal de cette thèse est de décliner et d’analyser l’algorithme kernel-LMS à noyau Gaussien dans trois cadres différents: celui des noyaux uniques et multiples, à valeurs réelles et à valeurs complexes, dans un contexte d’apprentissage distributé et coopératif dans les réseaux de capteurs. Plus précisement, ce travail s’intéresse à l’analyse du comportement en moyenne et en erreur quadratique de cas différents types d’algorithmes LMS à noyau. Les modèles analytiques de convergence obtenus sont validés par des simulations numérique. Tout d’abord, nous introduiso
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6

Deyneka, Alexander. "Metody ekvalizace v digitálních komunikačních systémech." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-218963.

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Tato práce je psaná v angličtině a je zaměřená na problematiku ekvalizace v digitálních komunikačních systémech. Teoretická část zahrnuje stručné pozorování různých způsobů návrhu ekvalizérů. Praktická část se zabývá implementací nejčastěji používaných ekvalizérů a s jejich adaptačními algoritmy. Cílem praktické části je porovnat jejich charakteristiky a odhalit činitele, které ovlivňují kvalitu ekvalizace. V rámci problematiky ekvalizace jsou prozkoumány tři typy ekvalizérů. Lineární ekvalizér, ekvalizér se zpětnou vazbou a ML (Maximum likelihood) ekvalizér. Každý ekvalizér byl testován na mo
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7

Tajany, Mostafa. "Égalisation adaptative de multitrajets dans des liaisons de télémesure à haut débit." Nantes, 1996. http://www.theses.fr/1996NANT2002.

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Dernier-né des services de télédétection, le système commercial SPOT conçu par le Centre National des Études Spatiales (CNES) et opérationnel depuis 1986, transmet vers le sol les informations images numérisées. Pour diverses configurations du satellite, la qualité de la liaison est fortement dégradée par la présence de multi-trajet, dû aux interactions entre l'antenne d'émission et la structure du satellite. Les travaux présentés dans ce mémoire s'inscrivent dans le cadre de l'étude de l'adaptativité d'antenne bord et sol intervenant dans les liaisons de télémesure de charge utile (TMCU) à ha
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8

Degtyarena, Anna Semenovna. "The window least mean square error algorithm." CSUSB ScholarWorks, 2003. https://scholarworks.lib.csusb.edu/etd-project/2385.

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In order to improve the performance of LMS (least mean square) algorithm by decreasing the amount of calculations this research proposes to make an update on each step only for those elements from the input data set, that fall within a small window W near the separating hyperplane surface. This work aims to describe in detail the results that can be achieved by using the proposed LMS with window learning algorithm in information systems that employ the methodology of neural network for the purposes of classification.
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9

Cavalcanti, Bruno Jácome. "Análise de modelos de predição de perdas de propagação em redes de comunicações LTE e LTE-Advanced usando técnicas de inteligência artificial." PROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA ELÉTRICA E DE COMPUTAÇÃO, 2017. https://repositorio.ufrn.br/jspui/handle/123456789/25061.

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Submitted by Automação e Estatística (sst@bczm.ufrn.br) on 2018-04-11T20:06:38Z No. of bitstreams: 1 BrunoJacomeCavalcanti_TESE.pdf: 5397909 bytes, checksum: 5a245eec570a69adf8ca5d791aaddf70 (MD5)<br>Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-04-16T20:46:19Z (GMT) No. of bitstreams: 1 BrunoJacomeCavalcanti_TESE.pdf: 5397909 bytes, checksum: 5a245eec570a69adf8ca5d791aaddf70 (MD5)<br>Made available in DSpace on 2018-04-16T20:46:19Z (GMT). No. of bitstreams: 1 BrunoJacomeCavalcanti_TESE.pdf: 5397909 bytes, checksum: 5a245eec570a69adf8ca5d7
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10

Laichi, Farouk. "Performance study of the leaky least mean square adaptive algorithm with delayed adjustments." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6748.

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Adaptive filters constitute an important part of signal processing. They are widely used in many applications where signal statistics are unknown to the users. One of the most popular adaptive methods is known as the least mean-squared (LMS) algorithm. It is well known for its hardware simplicity and its cost effectiveness. However, the LMS adaptive algorithm does not operate well in non-ideal environments. Leakage in the updated equation of the LMS algorithm was proven to overcome many such problems. This algorithm is known as the leaky LMS (LLMS). The LLMS is very robust to drifting phenomen
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11

Kim, Taeho, and Monika Ivantysynova. "Active Vibration Control of Axial Piston Machine using Higher Harmonic Least Mean Square Control of Swash Plate." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-199412.

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Noise emission is a major drawback of the positive displacement machine. The noise source can be divided into structure borne noise source (SBNS) and fluid borne noise source (FBNS). Passive techniques such as valve plate optimization have been used for noise reduction of axial piston machines. However, passive techniques are only effective for limited operating conditions or at least need compromises in design. In this paper, active vibration control of swash plate is investigated for vibration and noise reduction over a wide range of operating conditions as an additional method to passive no
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12

Gribaudo, Michael Louis. "Development of a system model and least mean square (LMS) filter for the Naval Postgraduate School (NPS) Infrared Search and Target Designation (IRSTD) system." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/26990.

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13

Poulsen, Andrew Joseph. "Real-time Adaptive Cancellation of Satellite Interference in Radio Astronomy." Diss., CLICK HERE for online access, 2003. http://contentdm.lib.byu.edu/ETD/image/etd238.pdf.

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14

Castelo, Branco César Augusto Santana. "Algoritmos adaptativos LMS normalizados proporcionais: proposta de novos algoritmos para identificação de plantas esparsas." Universidade Federal do Maranhão, 2016. http://tedebc.ufma.br:8080/jspui/handle/tede/1688.

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Submitted by Rosivalda Pereira (mrs.pereira@ufma.br) on 2017-06-23T20:42:44Z No. of bitstreams: 1 CesarCasteloBranco.pdf: 11257769 bytes, checksum: 911c33f2f0ba5c1c0948888e713724f6 (MD5)<br>Made available in DSpace on 2017-06-23T20:42:44Z (GMT). No. of bitstreams: 1 CesarCasteloBranco.pdf: 11257769 bytes, checksum: 911c33f2f0ba5c1c0948888e713724f6 (MD5) Previous issue date: 2016-12-12<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPQ)<br>This work proposes new methodologies to optimize the choice of t
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15

Kahaei, Mohammad Hossein. "Performance analysis of adaptive lattice filters for FM signals and alpha-stable processes." Thesis, Queensland University of Technology, 1998. https://eprints.qut.edu.au/36044/7/36044_Digitised_Thesis.pdf.

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The performance of an adaptive filter may be studied through the behaviour of the optimal and adaptive coefficients in a given environment. This thesis investigates the performance of finite impulse response adaptive lattice filters for two classes of input signals: (a) frequency modulated signals with polynomial phases of order p in complex Gaussian white noise (as nonstationary signals), and (b) the impulsive autoregressive processes with alpha-stable distributions (as non-Gaussian signals). Initially, an overview is given for linear prediction and adaptive filtering. The convergence
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16

Leyva, Mayorga Israel. "On reliable and energy efficient massive wireless communications: the road to 5G." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/115484.

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La quinta generación de redes móviles (5G) se encuentra a la vuelta de la esquina. Se espera provea de beneficios extraordinarios a la población y que resuelva la mayoría de los problemas de las redes 4G actuales. El éxito de 5G, cuya primera fase de estandarización ha sido completada, depende de tres pilares: comunicaciones tipo-máquina masivas, banda ancha móvil mejorada y comunicaciones ultra fiables y de baja latencia (mMTC, eMBB y URLLC, respectivamente). En esta tesis nos enfocamos en el primer pilar de 5G, mMTC, pero también proveemos una solución para lograr eMBB en escenarios de distr
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17

YANG, KAI-PING, and 陽開平. "The study of the hybrid least mean square (LMS) adaptive frost beamformer." Thesis, 1989. http://ndltd.ncl.edu.tw/handle/56589113934326600947.

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18

HONG, ZHI-CHAO, and 洪志超. "Performance analysis of the hybrid least mean square (LMS) adaptive line enhancer." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/06380023657107761537.

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19

Lin, Shih-Ming, and 林世明. "VLSI Design and Implementation of Least Mean Square Algorithm in Electronic Weighing System." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/37994736403742389152.

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碩士<br>國立中興大學<br>電機工程學系<br>92<br>The weighing of articles is an essential part in the modern life. We usually need to know the weight of the articles, such as food, product components, Pharmacology (medicine weight), chemical agents and so on. In the field of weighing, the object is put on the weighing system with the sensor. The sensor is an uncontrollable measuring component. The weight of object is obtained by weighing and filtering. In the process of weighing in electronic scales, the signals coming from load cell are disturbed by many kinds of noises, such as the air perturbatio
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20

Wang, Kae-Sheng, and 王凱生. "A Study and Implementation on Echo Canceller with Dynamic Least Mean Square Algorithm." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/r4n5k7.

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碩士<br>國立臺北科技大學<br>電機工程系研究所<br>95<br>The Dynamic Least Mean Square(DLMS) algorithm was proposed to cancel echo under communication device. In this approach, the computation is reduced and the performance is still without decrease. In the LMS algorithm of echo cancellation, the Adaptive Filter’s coefficient has characteristic of groups which is almost equal and no change after convergence. Thus, these grouped coefficients can be simplified to reduce the computation of LMS. The experimental result confirms the good performance of DLMS approach.
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21

Wu, Tsung-pei, and 吳宗霈. "Radar Signal Multipath Channel Identification Using Ambiguity Function and Normalized Least Mean Square Algorithm." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/50627100200824927977.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>101<br>This thesis investigates a method that identifies a directional antenna corresponding to the line of sight signal source based on radar array received signals in a multipath propagation environment. The method can improve false decision of signal direction problem. This work uses an ambiguity function to estimate the relative time delay between each multipath and the line of sight. Additionally, a normalized least mean square algorithm that identifies the multipath channel model including the time delays and gains are also used to verify the estimation results
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22

Prakash, D. M. Ram. "Realization of Delayed Least Mean Square Adaptive Algorithm using Verilog HDL for EEG Signals." Thesis, 2016. http://ethesis.nitrkl.ac.in/8566/1/2016_MT_214EC2164_D_M_Ram_Prakash.pdf.

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An efficient architecture for the implementation of delayed least mean square (DLMS) adaptive filter is presented in this paper. It is shown that the proposed architectures reduces the register complexity and also supports the faster convergence. Compared to transpose form, the direct form LMS adaptive filter has fast convergence but both has most similar critical path. Further it is shown that in most of the practical cases, very small adaptation delay is sufficient enough to implement a direct-form LMS adaptive filter where in normal cases a very high sampling rate is required and also it sh
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23

Ye, Zi-yi, and 葉子以. "Feedforward Active Noise Control System With Leaky Filter-x Normalized Least-Mean-Square Algorithm for Kitchen Hood." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/54575317626764338416.

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碩士<br>逢甲大學<br>電聲碩士學位學程<br>104<br>This study used the Leaky Filter-x Normalized Least Mean Square (Leaky Filter-x NLMS) algorithm to develop a feed-forward active noise control (ANC) system for the active control of noise in kitchen hoods. It is hoped that the resulting ANC system can effectively reduce the noise in kitchen hoods. With regard to hardware, a microphone amplifier was used to record and amplify the sound signal. In order to improve the ANC system, a low-pass filtered is developed. Additionally, this study presents a method how to choose a better placement point for noise reduct
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24

Jhang, Yu-Syuan, and 張育軒. "Transform-domain Normalized Least Mean Square Algorithm Design and Implementation for the Power-line Interference Cancellation from ECG Signal." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/3p4f68.

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碩士<br>國立中山大學<br>醫學科技研究所<br>106<br>Electrocardiography (ECG) has been widely used in medicine for the detection of the electrical signal of cardiac. For example: the doctors can diagnose the cardiac diseases via the electrical conduction system of ECG. For first aid and emergency medical help, automated external defibrillator (AED) is applied to automatically diagnose the life-threatening cardiac arrhythmias of ventricular fibrillation and is able to treat them through defibrillation if the patient’s cardiac rhythm is fatal ventricular arrhythmia. However, several noises, such as baseline wande
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