Готові списки джерел за темами / Micro-Beamforming

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Добірка наукової літератури з теми "Micro-Beamforming"

Автор: Grafiati

Опубліковано: 8 березня 2025

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Статті в журналах з теми "Micro-Beamforming"

Gil, J. M., and L. M. Correia. "Comparing Adaptive Beamforming in Micro- and Macro-Cells." IEEE Transactions on Antennas and Propagation 54, no. 2 (February 2006): 629–38. http://dx.doi.org/10.1109/tap.2005.863125.

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Tortoli, Piero, Lorenzo Castrignano, Claudio Giangrossi, Valentino Meacci, Enrico Boni, and Alessandro Ramalli. "Parallel- and micro-beamforming challenges in real-time, high-frame-rate, ultrasound imaging." Journal of the Acoustical Society of America 155, no. 3_Supplement (March 1, 2024): A102. http://dx.doi.org/10.1121/10.0026954.

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Delay-and-sum beamforming for classic (line-by-line) ultrasound imaging is usually performed in real-time by FPGAs and GPUs. However, when a high-frame-rate (HFR) has to be achieved, beamforming becomes challenging. Here, the echoes following the transmission of multi-line focused beams, plane waves, or diverging waves, must be simultaneously beamformed along multiple view lines. Such parallel beamforming is feasible online when the scanner is endowed with high flexibility and processing power. This talk will show how the FPGAs of the ULA-OP 256, a hardware-based open scanner, were efficiently utilized to enable parallel beamforming at high speed. The talk will also discuss how the data transfer between the scanner boards impacts the frame rate, which actually achieved 4400 frames per second through a new communication topology. The talk will also examine the image quality deterioration emerging when HFR imaging sequences are implemented in probes equipped with a microbeamformer (uB) that was designed for focused beam transmission. Simulations show how the transmitted beamwidth and uB size impact the image contrast and resolution, taking into account that the uB ASIC cannot handle multiple sets of delays and apodization weights after each transmit event. Technological improvements needed in the next generation uBs will be finally discussed.

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Bera, D., S. B. Raghunathan, C. Chen, Z. Chen, M. A. P. Pertijs, M. D. Verweij, V. Daeichin, et al. "Multiline 3D beamforming using micro-beamformed datasets for pediatric transesophageal echocardiography." Physics in Medicine & Biology 63, no. 7 (March 29, 2018): 075015. http://dx.doi.org/10.1088/1361-6560/aab45e.

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Carbajal Ipenza, Sammy Johnatan Carbajal, and Bruno Sanches Masiero. "Efficient Sigma–Delta Sensor Array Beamforming." Sensors 23, no. 17 (August 31, 2023): 7577. http://dx.doi.org/10.3390/s23177577.

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Nowadays, sensors with built-in SDM are widely used in consumer, industrial, automotive, and medical applications, as they have become a cost-effective and convenient way to deliver data to digital processors. This is the case for micro-electro-mechanical system (MEMS), digital microphones that convert analog audio to a PDM bitstream. However, as the SDM output a PDM signal, sensors require either built-in or external high-order decimation filters to demodulate the PDM signal to a baseband multi-bit pulse-code modulated (PCM) signal. Because of this extra circuit requirement, the implementation of sensor array algorithms, such as beamforming in embedded systems (where the processing resources are critical) or in VLSI circuits (where the power and area are crucial) becomes especially expensive as a large number of parallel decimation filters are required. This article proposes a novel architecture for beamforming algorithm implementation that fuses delay and decimation operations based on maximally flat (MAXFLAT) filters to make array processing more affordable. As proof of concept, we present an implementation example of a delay-and-sum (DAS) beamformer at given spatial and frequency requirements using this novel approach. Under these specifications, the proposed architecture requires 52% lower storage resources and 19% lower computational resources than the most efficient state-of-the-art architecture.

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Phoha, Shashi, John Koch, Eric Grele, Christopher Griffin, and Bharat Madan. "Space-time Coordinated Distributed Sensing Algorithms for Resource Efficient Narrowband Target Localization and Tracking." International Journal of Distributed Sensor Networks 1, no. 1 (February 2005): 81–99. http://dx.doi.org/10.1080/15501320590901856.

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Distributed sensing has been used for enhancing signal to noise ratios for space-time localization and tracking of remote objects using phased array antennas, sonar, and radio signals. The use of these technologies in identifying mobile targets in a field, emitting acoustic signals, using a network of low-cost narrow band acoustic micro-sensing devices randomly dispersed over the region of interest, presents unique challenges. The effects of wind, turbulence, and temperature gradients and other environmental effects can decrease the signal to noise ratio by introducing random errors that cannot be removed through calibration. This paper presents methods for dynamic distributed signal processing to detect, identify, and track targets in noisy environments with limited resources. Specifically, it evaluates the noise tolerance of adaptive beamforming and compares it to other distributed sensing approaches. Many source localization and direction-of-arrival (DOA) estimation methods based on beamforming using acoustic sensor array have been proposed. We use the approximate maximum likelihood parameter estimation method to perform DOA estimation of the source in the frequency domain. Generally, sensing radii are large and data from the nodes are transmitted over the network to a centralized location where beamforming is done. These methods therefore depict low tolerance to environmental noise. Knowledge based localized distributed processing methods have also been developed for distributed in-situ localization and target tracking in these environments. These methods, due to their reliance only on local sensing, are not significantly affected by spatial perturbations and are robust in tracking targets in low SNR environments. Specifically, Dynamic Space-time Clustering (DSTC)-based localization and tracking algorithm has demonstrated orders of magnitude improvement in noise tolerance with nominal impact on performance. We also propose hybrid algorithms for energy efficient robust performance in very noisy environments. This paper compares the performance of hybrid algorithms with sparse beamforming nodes supported by randomly dispersed DSTC nodes to that of beamforming and DSTC algorithms. Hybrid algorithms achieve relative high accuracy in noisy environments with low energy consumption. Sensor data from a field test in the Marine base at 29 Palms, CA, were analyzed for validating the results in this paper. The results were compared to “ground truth” data obtained from GPS receivers on the vehicles.

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Vlaminck, V., L. Temdie, V. Castel, M. B. Jungfleisch, D. Stoeffler, Y. Henry, and M. Bailleul. "Spin wave diffraction model for perpendicularly magnetized films." Journal of Applied Physics 133, no. 5 (February 7, 2023): 053903. http://dx.doi.org/10.1063/5.0128666.

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We present a near-field diffraction model for spin waves in perpendicularly magnetized films applicable in any geometries of excitation fields. This model relies on Kalinikos–Slavin formalism to express the dynamic susceptibility tensor in k-space and calculate the diffraction patterns via inverse 2D-Fourier transform of the response functions. We show an excellent quantitative agreement between our model and MuMax3 micro-magnetic simulations on two different geometries of antennas. Our method benchmarks spin wave diffraction in perpendicularly magnetized films and is readily applicable for future designs of magnon beamforming and interferometric devices.

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Khramtsov, Igor, Victor Ershov, and Oleg Kustov. "Localization of Noise Sources in Jets Flowing from Lobed Nozzles." E3S Web of Conferences 446 (2023): 01002. http://dx.doi.org/10.1051/e3sconf/202344601002.

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The noise of jets formed using conical and lobed nozzles has been measured. The possibility of jet noise reduction by using a lobed nozzle shape has been demonstrated. The localization of noise sources in jets formed using various nozzles has been carried out. A planar 9-beam 54-channel Bruel & Kjaer micro-phone array and Delay-and-Sum Beamforming technique were used. As a result, the position of noise sources in a turbulent jet in one-third octave frequency bands was obtained. The deviation effect of the position of noise sources when using lobed nozzles relative to the standard jet formed by a conical nozzle is demonstrated.

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Shen Fangfang, 申芳芳, 苏鑫鑫 Su Xinxin, 杨思成 Yang Sicheng, 武震林 Wu Zhenlin, 赵明山 Zhao Mingshan, and 韩秀友 Han Xiuyou. "Design of Time Delay Network for Optical Beamforming Based on Anti-Resonant Waveguide Micro-Rings." Acta Optica Sinica 39, no. 2 (2019): 0213001. http://dx.doi.org/10.3788/aos201939.0213001.

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Zhang, Ziyang, Zheng Jiang, Bei Yang, and Xiaoming She. "A Beamforming-Based Enhanced Handover Scheme with Adaptive Threshold for 5G Heterogeneous Networks." Electronics 12, no. 19 (October 3, 2023): 4131. http://dx.doi.org/10.3390/electronics12194131.

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In order to tackle the explosive growth of data traffic and the number of terminals, 5G heterogeneous network (HetNet) has become an important evolution direction of 5G networking architecture. Densely deployed micro base stations (gNBs) in 5G HetNets will dramatically increase the handover frequency of user equipment (UE), resulting in more handover failures, and seriously reducing the user experience of mobile UE. Aiming at tackling this problem, this paper proposes a beam enhancement handover scheme with an adaptive threshold. Firstly, different beamforming gains are configured for the mobile UE in the overlapping area of two gNBs to improve the signal strength received by the UE at the edge of gNB coverage. Secondly, for mobile UE with different speeds, adaptive handover decision parameters are configured, and reference signal receiving strength (RSRP) as well as reference signal receiving quality (RSRQ) are used for joint handover decisions to achieve reliable handover. The simulation results verify that the proposed scheme can effectively improve the signal strength of the edge area, and the adaptive joint handover decision algorithm based on UE speed can also effectively improve the handover success probability.

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Seo, Sang-Woo, Somi Yun, Myung-Gyu Kim, Mankyu Sung, and Yejin Kim. "Screen-Based Sports Simulation Using Acoustic Source Localization." Applied Sciences 9, no. 15 (July 24, 2019): 2970. http://dx.doi.org/10.3390/app9152970.

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In this paper, we introduce a novel acoustic source localization in a three-dimensional (3D) space, based on a direction estimation technique. Assuming an acoustic source at a distance from adjacent microphones, its waves spread in a planar form called a planar wavefront. In our system, the directions and steering angles between the acoustic source and the microphone array are estimated based on a planar wavefront model using a delay and sum beamforming (DSBF) system and an array of two-dimensional (2D) microelectromechanical system (MEMS) microphones. The proposed system is designed with parallel processing hardware for real-time performance and implemented using a cost-effective field programmable gate array (FPGA) and a micro control unit (MCU). As shown in the experimental results, the localization errors of the proposed system were less than 3 cm when an impulsive acoustic source was generated over 1 m away from the microphone array, which is comparable to a position-based system with reduced computational complexity. On the basis of the high accuracy and real-time performance of localizing an impulsive acoustic source, such as striking a ball, the proposed system can be applied to screen-based sports simulation.

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Більше джерел

Дисертації з теми "Micro-Beamforming"

Guerif, Benjamin. "Conception d’une sonde programmable, polyvalente et abordable pour l'imagerie médicale ultrasonore volumétrique en temps réel." Electronic Thesis or Diss., Université Paris sciences et lettres, 2024. http://www.theses.fr/2024UPSLS041.

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Selon l’Organisation Mondiale de la Santé, les maladies cardiovasculaires sont la principale cause de décès dans le monde avec 17.9 millions de décès soit 32% des morts constatés en 2019. L’échocardiographie transthoracique (TTE), une technique d’imagerie ultrasonore non invasive et non irradiante, s’est alors imposée comme un outil de diagnostic efficace permettant d’identifier les dysfonctionnements du muscle cardiaque. Cette technique permet alors de procéder à une analyse morphologique et cinétique du cœur à l’aide de techniques d’imagerie dites conventionnelles.D’autres techniques alternatives telles que l’imagerie ultrarapide proposent des modalités complémentaires pouvant permettre d’améliorer le diagnostic des maladies cardiovasculaires. Si ces techniques ont pu faire leurs preuves en imagerie bidimensionnelle (2D), différentes barrières technologiques s’opposent à sa démocratisation en imagerie tridimensionnelle (3D). En effet, le passage de la 2D à la 3D nécessite d’adresser des réseaux de transducteurs de plusieurs milliers de voies. Les systèmes d’imagerie cliniques ayant un nombre de voies limité (le plus souvent à 256), l’utilisation de techniques dites de réduction de voie s’avère donc nécessaire. L’une d’entre elles, appelée micro-formation de faisceau, s’est ainsi démarquée en proposant des performances d’imagerie conventionnelles 3D similaires à une sonde d’imagerie 2D. Cette technologie est le plus souvent fermé et semble a priori difficilement compatible avec des techniques d’imagerie alternative. Ce faisant l’imagerie ultrarapide s’est rapidement orientée sur des techniques de réduction de voie alternatives telles que les réseaux ligne-colonne, les réseaux clairsemés ou l’utilisation de systèmes d’imagerie encombrants avec des sondes matricielles de plus petite surface acoustique et composée de milliers d’éléments.Dans cette thèse, un premier travail visant à améliorer les techniques d’imagerie ultrarapide existantes est proposé en nous appuyant sur l’utilisation d’une nouvelle sonde complètement peuplée composée de 3072 éléments associée à nouveau système d’imagerie de plusieurs milliers de voies. Par la suite, la définition et l’étude d’une sonde matricielle active dédiée à l’imagerie TTE reposant sur l’utilisation de la micro-formation de faisceau et composée de plusieurs milliers d’éléments pilotés par un unique système d’imagerie est proposée. Enfin, un prototype de sonde de micro-formation de faisceau est réalisé et évalué expérimentalement à l’aide d’un échographe de recherche ouvert afin de proposer une première sonde suffisamment polyvalente, programmable et abordable pour rendre accessible cette technologies aux laboratoires de recherche et ainsi offrir de nouveaux outils de diagnostic en échocardiographie transthoracique 3D
Selon l’Organisation Mondiale de la Santé, les maladies cardiovasculaires sont la principale cause de décès dans le monde avec 17.9 millions de décès soit 32% des morts constatés en 2019. L’échocardiographie transthoracique (TTE), une technique d’imagerie ultrasonore non invasive et non irradiante, s’est alors imposée comme un outil de diagnostic efficace permettant d’identifier les dysfonctionnements du muscle cardiaque. Cette technique permet alors de procéder à une analyse morphologique et cinétique du cœur à l’aide de techniques d’imagerie dites conventionnelles.D’autres techniques alternatives telles que l’imagerie ultrarapide proposent des modalités complémentaires pouvant permettre d’améliorer le diagnostic des maladies cardiovasculaires. Si ces techniques ont pu faire leurs preuves en imagerie bidimensionnelle (2D), différentes barrières technologiques s’opposent à sa démocratisation en imagerie tridimensionnelle (3D). En effet, le passage de la 2D à la 3D nécessite d’adresser des réseaux de transducteurs de plusieurs milliers de voies. Les systèmes d’imagerie cliniques ayant un nombre de voies limité (le plus souvent à 256), l’utilisation de techniques dites de réduction de voie s’avère donc nécessaire. L’une d’entre elles, appelée micro-formation de faisceau, s’est ainsi démarquée en proposant des performances d’imagerie conventionnelles 3D similaires à une sonde d’imagerie 2D. Cette technologie est le plus souvent fermé et semble a priori difficilement compatible avec des techniques d’imagerie alternative. Ce faisant l’imagerie ultrarapide s’est rapidement orientée sur des techniques de réduction de voie alternatives telles que les réseaux ligne-colonne, les réseaux clairsemés ou l’utilisation de systèmes d’imagerie encombrants avec des sondes matricielles de plus petite surface acoustique et composée de milliers d’éléments.Dans cette thèse, un premier travail visant à améliorer les techniques d’imagerie ultrarapide existantes est proposé en nous appuyant sur l’utilisation d’une nouvelle sonde complètement peuplée composée de 3072 éléments associée à nouveau système d’imagerie de plusieurs milliers de voies. Par la suite, la définition et l’étude d’une sonde matricielle active dédiée à l’imagerie TTE reposant sur l’utilisation de la micro-formation de faisceau et composée de plusieurs milliers d’éléments pilotés par un unique système d’imagerie est proposée. Enfin, un prototype de sonde de micro-formation de faisceau est réalisé et évalué expérimentalement à l’aide d’un échographe de recherche ouvert afin de proposer une première sonde suffisamment polyvalente, programmable et abordable pour rendre accessible cette technologies aux laboratoires de recherche et ainsi offrir de nouveaux outils de diagnostic en échocardiographie transthoracique 3D

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Muhammad, Nuraddeen Ado. "Analysis and design of an innovative 19.5 GHz active phase-shifter architecture, implemented in a 0.13 μm BiCMOS SiGe process, for beamforming in 5G applications". Electronic Thesis or Diss., Poitiers, 2024. http://www.theses.fr/2024POIT2257.

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Pour différentes raisons, la 5G domine actuellement l'actualité technologique. Les capacités de la 5G en termes de largeur de bande et de temps réel constitues un énorme potentiel sociétal en permettant pléthore d'applications nouvelles et inattendues. En effet, la bande de fréquence des ondes millimétriques se caractérise par une largeur de bande disponible qui peut prendre en charge des systèmes sans fil à haut débit pour les futurs systèmes de radiocommunication, y compris les systèmes cellulaires de cinquième génération et au-delà. Les fréquences d'exploitation des ondes millimétriques nécessitent généralement une plus grande ouverture d'antenne pour améliorer le bilan de liaison. Ces antennes se présentent généralement sous la forme de réseaux phasés, permettant la formation de faisceaux. Dans ce contexte, ce travail présente la conception et la mise en œuvre d'un déphaseur actif à 19,5 GHz pour la formation de faisceaux. Le circuit proposé est basé sur une architecture originale utilisant un oscillateur commandé en tension verrouillé par injection (ILVCO en Anglais) associé à un filtre polyphase suivi d'un circuit de sélection de phase et de son signe. La phase souhaitée dans la plage de ± 45° est synthétisée avec le circuit proposé en modifiant la tension de commande Vcntr de l’ILVCO pour un réglage fin et en modifiant les deux signaux de commandes du sélecteur de phase et de signe (S0, S2) pour un réglage grossier, ce qui engendre une variation de phase linéaire de 360°. D'après les résultats de la simulation post-layout, la plage de réglage de la fréquence d’oscillation libre du VCO varie de 17,89 GHz à 20,16 GHz. En outre, avec une puissance injectée de -8,5 dBm et une fréquence de 19,5 GHz, le déphaseur proposé consomme 20,47 mA sous une tension d'alimentation de 1,3 V. De plus, la puissance de sortie moyenne sur 50 Ω est de -15,58 dBm. Le circuit complet a une taille de 1,58 mm2, y compris les pads, et il est intégré sur un process BiCMOS SiGe:C 0,13 μm. Enfin, les résultats obtenus montrent que le déphaseur actif proposé s’avère un candidat potentiel pour les systèmes à réseau phasé utilisés pour la formation de faisceaux dans les applications 5G
For good reasons, 5G dominates technological news. The high-bandwidth and real-time capabilities of 5G have huge societal potential by enabling a plethora of new and unanticipated application cases. Indeed, the millimeter-wave frequency band is characterized by an available bandwidth that can support high-speed wireless systems for future radio communications systems, including 5th Generation cellular systems and beyond. The frequencies of operation at mm-wave generally requires larger antenna aperture to improve the channel budget at useful distances. These antennas are usually in the form of phased arrays, allowing beamforming to be performed. This work presents the design and implementation of a 19.5 GHz active phase shifter for beamforming in 5G applications. The proposed circuit is based on an original architecture using an injection-locked voltage-controlled oscillator (ILVCO) associated with a polyphase filter followed by a phase selection circuit and its sign. The desired phase in the range of ± 45° is synthesised with the proposed circuit by altering the control voltage Vcntr of an ILVCO for fine-tuning and modifying the two control signals of phase and sign selectors (S0, S2) for coarse tuning, resulting in a 360° linear phase variation. According to the post-layout simulation results, the frequency tuning range of the VCO varies from 17.89 GHz to 20.16 GHz in free-running mode. In addition, with an injected power of -8.5 dBm and a frequency of 19.5 GHz, the proposed phase shifter draws 20.47 mA from a 1.3 V supply voltage. Furthermore, the mean output power on 50 Ω load is found to be -15.58 dBm. The whole circuit has a chip size of 1.58 mm2 including the pads and it is integrated in a BiCMOS SiGe:C 0.13 μm process. Finally, the obtained results justify that the proposed active phase shifter is a relevant design for phased-array systems used for beamforming in 5G applications

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Shih, Huei-Hsu, and 施懷勛. "Ultrasound Array Signal Compression by Digital Micro-beamforming." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/60761638536869426073.

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碩士
國立臺灣大學
生醫電子與資訊學研究所
103
Due to the high computational requirements, conventionally real-time ultrasound imaging systems utilize highly parallel hardware architectures, thus resulting in high hardware cost, lack of flexibility on image optimization and algorithm implementation and relatively long system development cycle. On the other hand, a software-based system utilizing highly parallel graphic processing units (GPUs) can alleviate such limitations. However, massive raw data transmission from hardware end to software end, which is up to gigabytes per second, becomes one of the bottlenecks for performing real-time software-based imaging. For example, the popular USB 3.0 can only support data rate up to 0.5GB/s, which cannot support real-time raw data transfer. A feasible solution is to compress raw channel data with low hardware resource requirement on the front end. As previous studies demonstrated, we can get overall compression ratio of 4~5.6 by demodulating the radio frequency data to baseband and applying Walsh transform-based compression methods. However, more data compression is still desired. In this study, we propose the use of micro-beamforming to further compress the amplitude data with following steps: take the first N channels as a group, and delay the channel data based on pre-steering, then sum up the N channels into one single output. The rest of the channels follow the same procedures and the number of output channels can be suppressed by N times. In addition to data compression, we also propose a compensation method to decrease the errors resulting from the micro-beamformed amplitude data. Results show that when a group of 4 channels are used, B-mode images formed by the compressed data have almost the same spatial and contrast resolution as the original ones. Furthermore, the peak signal-to-noise ratio is higher than 50 dB with the application of the compensation method. Moreover, several aperture domain processing algorithms, including phase aberration correction, coherence-based adaptive weighting and color Doppler velocity estimation, were tested with micro-beamforming and reasonable performance is achieved. The proposed method integrates micro-beamforming and the compensation method into the Walsh transform-based architecture, and overall compression ratio was improved by about 27~59%, reaching an overall compression ratio up to 6.3~7.1, which enables real-time data transfer via an USB 3.0 interface. The increased resource utilization is no more than 5% on a Virtex-6 FPGA.

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Частини книг з теми "Micro-Beamforming"

Gil, João M., and Luís M. Correia. "Adaptive Beamforming Performance in Micro- and Macro-Cell Propagation Scenarios." In Adaptive Antenna Arrays, 153–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-05592-2_9.

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Тези доповідей конференцій з теми "Micro-Beamforming"

Guérif, Benjamin, Victor Finel, David Savéry, Philippe Vince, Claire Bantignies, Sophana Kok, Marie-Coline Dumoux, et al. "A matrix array for volumetric imaging using a micro-beamforming ASIC." In 2024 IEEE Ultrasonics, Ferroelectrics, and Frequency Control Joint Symposium (UFFC-JS), 1–4. IEEE, 2024. https://doi.org/10.1109/uffc-js60046.2024.10793797.

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U-Wai Lok and Pai-Chi Li. "Improving micro-beamforming by error compensation." In 2016 IEEE International Ultrasonics Symposium (IUS). IEEE, 2016. http://dx.doi.org/10.1109/ultsym.2016.7728731.

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Bera, D., H. J. Vos, S. B. Raghunathan, C. Chen, Z. Chen, M. D. Verweij, M. A. P. Pertijs, N. de Jong, and J. G. Bosch. "Three-dimensional beamforming combining micro-beamformed RF datasets." In 2016 IEEE International Ultrasonics Symposium (IUS). IEEE, 2016. http://dx.doi.org/10.1109/ultsym.2016.7728449.

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Taniguchi, Tetsuki, and Takeo Fujii. "Interference Management with Beamforming Utilizing Spectrum Database for Micro Operators." In 2020 IEEE 92nd Vehicular Technology Conference (VTC2020-Fall). IEEE, 2020. http://dx.doi.org/10.1109/vtc2020-fall49728.2020.9348725.

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Yuan, Hang, Nan Yang, Kai Yang, Chong Han, and Jianping An. "Enabling Massive Connections Using Hybrid Beamforming in Terahertz Micro-Scale Networks." In 2020 IEEE Wireless Communications and Networking Conference (WCNC). IEEE, 2020. http://dx.doi.org/10.1109/wcnc45663.2020.9120579.

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Savoia, Alessandro Stuart, Giosue Caliano, Nicola Lamberti, Giulia Matrone, Giovanni Magenes, and Antonio Iula. "Phase shift micro-beamforming of CMUT arrays using the spring-softening effect." In 2013 IEEE International Ultrasonics Symposium (IUS). IEEE, 2013. http://dx.doi.org/10.1109/ultsym.2013.0361.

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Sarmiento, Samael, Jose A. Lazaro, Alicia Lopez, M. Angeles Losada, Jorge Pinazo, and Adolfo Lerin. "Study of Graphene-SOI-Based Micro-Ring Resonator for Beamforming Automotive Radars." In 2020 22nd International Conference on Transparent Optical Networks (ICTON). IEEE, 2020. http://dx.doi.org/10.1109/icton51198.2020.9203261.

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Kang, Hyun Gil, Sua Bae, Pilsu Kim, Jiwon Park, Gunho Lee, Woojin Jung, Minsuk Park, Kangsik Kim, Wooyoul Lee, and Tai-Kyong Song. "Column-based micro-beamformer for improved 2D beamforming using a matrix array transducer." In 2015 IEEE Biomedical Circuits and Systems Conference (BioCAS). IEEE, 2015. http://dx.doi.org/10.1109/biocas.2015.7348450.

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Yu, Zili, Michiel A. P. Pertijs, and Gerard C. M. Meijer. "A programmable analog delay line for Micro-beamforming in a transesophageal ultrasound probe." In 2010 10th IEEE International Conference on Solid-State and Integrated Circuit Technology (ICSICT). IEEE, 2010. http://dx.doi.org/10.1109/icsict.2010.5667749.

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Wang, Dongxu, Yuanxi Cao, Cheng Guo, and Sen Yan. "A Micro-Machined Butler Matrix Beamforming Network Based Multi-Beam Patch Antenna Array." In 2021 Computing, Communications and IoT Applications (ComComAp). IEEE, 2021. http://dx.doi.org/10.1109/comcomap53641.2021.9653023.

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