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Dissertations / Theses on the topic 'Smart antenna and Wireless systems'

Author: Grafiati

Published: 5 June 2025

Last updated: 16 July 2025

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1

Yu, Xiaoming. "Multibeam smart antenna systems for wireless communications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0034/NQ66298.pdf.

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2

Palantei, Elyas. "Switched Parasitic Smart Antenna: Design and Implementation for Wireless Communication Systems." Thesis, Griffith University, 2012. http://hdl.handle.net/10072/366219.

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Smart antenna technology in applications such as the next-G wireless communication networks may improve the quality of service (QoS). One category of smart antennas is the switched beam smart antenna (SBA). These antennas can be grouped into plug and play antennas and adaptive internal antennas. Four types of switched beam smart antennas were investigated including a six monopole array on circular ground plane with conducting sleeve, five monopoles on a circular ground plane without a conducting sleeve, a reconfigurable monopole on a cylindrical hollow ground structure, and a reconfigurable ad

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3

Noordin, Nurul Hazlina. "Adaptive array antenna design for wireless communication systems." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/8950.

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Adaptive array antennas use has been limited to non-commercial applications due to their high cost and hardware complexity. The implementation cost of adaptive array antennas can be kept to a minimum by using cost effective antennas, reducing the number of elements in the array and implementing efficient beamforming techniques. This thesis presents techniques for the design of adaptive array antennas which will enable their cost effective implementation in wireless communication systems. The techniques are investigated from three perspectives, namely, reconfigurable antenna design, wide scan a

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4

Lei, Yu. "Resource Management with Smart Antenna in CDMA Systems." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/30876.

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Third generation (3G) mobile communication systems will provide services supporting high-speed data network and multimedia applications in addition to voice applications. The Smart antenna technique is one of the leading technologies that helps to meet the requirement by such services to radio network capacity. Resource management schemes such as power control, handoff and channel reservation/assignment are also essential for providing the seamless services with high quality. Smart antenna techniques will help to enhance the capability of resource management through more efficient and f

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5

Kavak, Adnan. "Vector propagation channel studies for smart antenna wireless communication systems /." Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3004302.

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6

Janapsatya, Januar. "Switched-beam smart antenna system for indoor wireless LAN /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18419.pdf.

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7

Torlak, Murat. "Estimation and capacity of channels in smart antenna wireless communication systems /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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8

Chim, Kwok Chi. "Investigating the impact of smart antenna on SAR /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202002%20CHIM.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2002.<br>Includes bibliographical references (leaves 53-54). Also available in electronic version. Access restricted to campus users.

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9

Elfarawi, Shaaban M. "Indoor CDMA capacity using smart antenna base station." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0019/MQ54885.pdf.

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10

Kim, Sang-youb. "A fast estimation algorithm of array response vector for adaptive smart antenna systems /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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11

Durrani, Salman. "Investigations into smart antennas for CDMA wireless systems /." [St. Lucia, Qld.], 2004. http://adt.library.uq.edu.au/public/adt-QU20041201.165143/index.html.

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12

Yiu, Candy. "High Speed Wireless Networking for 60GHz." PDXScholar, 2011. https://pdxscholar.library.pdx.edu/open_access_etds/373.

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This thesis examines the problem of providing high data-rate wireless connectivity to users in indoor environments. The goal is to be able to reach Gbps/user rates even when there are multiple users present. The technology that we study is to use the 60 GHz spectrum whose special propagation properties make it ideally suited to this task. The approaches developed include using multiple spatially distributed smart antennas in a room or multiple co-located antennas to provide coverage where needed and when needed. All the antennas are connected to a single access point which allows us to dynamic

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13

Lakshmanan, Sriram. "Securing wireless networks against eavesdropping using smart antennas." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/26698.

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Thesis (M. S.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Raghupathy, Sivakumar; Committee Member: Farmarz Fekri; Committee Member: Mary Ann, Ingram. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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14

Lee, Gil Young. "Conformal Body-Worn Smart Antenna System for Wideband UHF Operation." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1323756546.

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15

Stridh, Rickard. "Smart Antennas in Wireless Networks : Systems Issues and Performance Limits." Doctoral thesis, KTH, Signals, Sensors and Systems, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3467.

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<p>This work deals with performance limits when using smartantennas in future wireless systems. The current evolution inthe field of wireless communication implicates a substantiallyincreased demand on transport capacity. Smart antennas is onevery powerful means to fulfill these demands. In this work theuse of smart antennas, deployed at either the access point orboth the access point and the mobile terminal isinvestigated.</p><p>In order to find out how the evolution within wirelesscommunication will continue during the ten years to come, ascenario analysis is performed where driving forces a

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16

Huang, Fei, and 黄菲. "Design and analysis of transmission protocols in wireless networks with smart antennas." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B46421610.

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17

Newhall, William George. "Radio Channel Measurements and Modeling for Smart Antenna Array Systems Using a Software Radio Receiver." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/27115.

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This dissertation presents research performed in the areas of radio wave propagation measurement and modeling, smart antenna arrays, and software-defined radio development. A four-channel, wideband, software-defined receiver was developed to serve as a test bed for wideband measurements and antenna array experiments. This receiver was used to perform vector channel measurements in terrestrial and air-to-ground environments using an antenna array. ent results served as input to radio channel simulations based on three geometric channel models. The simulation results were compared to measure

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18

Ghani, Sarfraz M. "Improving the Performance of Wireless Systems via Selective Interference Nulling and Adaptive Medium Access Control Design." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/34041.

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Escalating demands for high performance wireless systems requires the confluence of smart communication methods, network protocols and ongoing advances in fabrication technologies, in order to bring smaller form factor mobile handsets to market. On par with these trends, this thesis focuses on two main areas, namely, Multiple Antenna Systems and Adaptive MAC Design to improve wireless system performance. The first part of this research work presents a mathematical framework for characterizing the performance of cellular mobile radio systems equipped with smart antennas at the mobile handset

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19

Zoli, Marco. "Performance analysis of ray-tracing assisted beamforming techniques for future mm-wave wireless systems." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7583/.

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Il progetto di tesi riguarda principalmente la progettazione di moderni sistemi wireless, come 5G o WiGig, operanti a onde millimetriche, attraverso lo studio di una tecnica avanzata detta Beamforming, che, grazie all'utilizzo di antenne direttive e compatte, permette di superare limiti di link budget dovuti alle alte frequenze e introdurre inoltre diversità spaziale alla comunicazione. L'obiettivo principale del lavoro è stato quello di valutare, tramite simulazioni numeriche, le prestazioni di alcuni diversi schemi di Beamforming integrando come tool di supporto un programma di Ray Tra

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20

Panique, Michael David. "Design and evaluation of test bed software for a smart antenna system supporting wireless communication in rural areas." Thesis, Montana State University, 2008. http://etd.lib.montana.edu/etd/2008/panique/PaniqueM0508.pdf.

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This paper explores the design and development of a test bed to analyze feasibility of utilizing adaptive smart antennas in conjunction with high bandwidth WiMAX radio systems to achieve improved performance for mobile nodes and to suppress potential interference from unwanted signals. Although the new WiMAX standard offers the potential for using smart, adaptive antennas, this functionality has not been implemented. This design serves as a common platform for testing adaptive array algorithms including direction of arrival (DOA) estimation, beamforming, and adaptive tracking, as well as compl

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21

Juswardy, Budi. "Integrated broadband microphotonic beamformer for adaptive nulling in smart antennas." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2010. https://ro.ecu.edu.au/theses/1843.

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The tremendous growth of the wireless communications sector and the problem of limited available spectrum that can be used to cater the wireless demand have spurred the need for better data transmission capacity and signal rates for wireless communication systems. Smart antennas are the promising technology for improving the wireless communication systems performance. Smart antennas are system that consist of antenna arrays capable of adaptively adjusting the beam pattern, thereby enhancing the desired signals (beam steering) and suppressing the interference signals (null steering), which is a

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22

Lakshmanan, Sriram. "Cooperative communication in wireless networks: algorithms, protocols and systems." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42702.

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Current wireless network solutions are based on a link abstraction where a single co-channel transmitter transmits in any time duration. This model severely limits the performance that can be obtained from the network. Being inherently an extension of a wired network model, this model is also incapable of handling the unique challenges that arise in a wireless medium. The prevailing theme of this research is to explore wireless link abstractions that incorporate the broadcast and space-time varying nature of the wireless channel. Recently, a new paradigm for wireless networks which uses the id

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23

Jiang, Jeng-Shiann. "Measurement, Modeling, and Performance, of Indoor MIMO Channels." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5035.

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The objective of this dissertation is to investigate the performance of the recently proposed MIMO technology in real indoor environments based on channel measurements centered at 5.8 GHz. First, a MIMO channel measurement system is implemented based on the virtual antenna array infrastructure. This measurement testbed can acquire the wideband channel matrices of MIMO systems with arbitrary array geometries. The measurement system structure and measurement procedure are described in detail in the first part. The second part is about MIMO channel modeling. Two novel number-of-sources detection

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24

Wang, Ting. "Wireless Network Physical Layer Security with Smart Antenna." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/23243.

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Smart antenna technique has emerged as one of the leading technologies for enhancing the quality of service in wireless networks. Because of its ability to concentrate transmit power in desired directions, it has been widely adopted by academia and industry to achieve better coverage, improved capacity and spectrum efficiency of wireless communication systems. In spite of its popularity in applications of performance enhancement, the smart antenna\'s capability of improving wireless network security is relatively less explored. This dissertation focuses on exploiting the smart antenna technolo

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25

Öström, Erik. "BUILDING AND EXPERIMENTALLYEVALUATING A SMART ANTENNA FOR LOWPOWER WIRELESS COMMUNICATION." Thesis, Mälardalen University, School of Innovation, Design and Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-9661.

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<p>In wireless communication there is commonly much unnecessarycommunication made in directions not pointing towards the recipient. Normallyomni directional antennas are being used which sends the same amount ofenergy in all directions equally. This waste of energy reduces the lifetime ofbattery powered units and causes more traffic collisions than necessary. Oneway of minimizing this wasted energy and traffic collisions, is to use anothertype of antenna called “smart antenna”. These antennas can use selectableradiation patterns depending on the situation and thus drastically minimize theunnec

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26

Zhou, Wei. "Autonomous smart antenna systems for future mobile devices." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/9959.

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Along with the current trend of wireless technology innovation, wideband, compact size, low-profile, lightweight and multiple functional antenna and array designs are becoming more attractive in many applications. Conventional wireless systems utilise omni-directional or sectored antenna systems. The disadvantage of such antenna systems is that the electromagnetic energy, required by a particular user located in a certain direction, is radiated unnecessarily in every direction within the entire cell, hence causing interference to other users in the system. In order to limit this source of inte

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27

Haghdad, Mehdi, and Kamilo Feher. "PSEUDO ERROR DETECTION IN SMART ANTENNA/DIVERSITY SYSTEMS." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/605363.

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International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>An implementation of a Pseudo Error Detection (PSED) system is presented and its performance in conjunction with smart antenna and smart diversity systems tested and evaluated. Non redundancy, instant response and relative simplicity make the Pseudo Error Detectors excellent real time error monitoring systems in smart antenna and smart diversity systems. Because of the Non-redundant Error Detection mechanism in Pseudo Error Detectors, we can monitor the error

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28

Hwang, Seung-Hyeon. "Adaptive antenna techniques for smart antennas and radar systems." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2005. http://wwwlib.umi.com/cr/syr/main.

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29

Bala, Erdem. "Multichannel, multiuser and multiple antenna wireless communication systems." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 184 p, 2007. http://proquest.umi.com/pqdlink?did=1251904851&Fmt=7&clientId=79356&RQT=309&VName=PQD.

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30

Wilkinson, Peter-Luke. "Antenna array receivers of DS-COMA wireless systems." Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246676.

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31

Michailidis, Evangelos. "MIMO antenna systems for next generation wireless communications." Thesis, University of Newcastle Upon Tyne, 2011. http://hdl.handle.net/10443/1234.

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Multiple Input Multiple Output wireless communications systems require as the name implies multiple antennas at the transmit and receive side of a link, as all multiple elements operationally occupy the same spectrum, the capacity of carrying information is increased with no increase in the transmission bandwidth or power. Antennas destined for MIMO systems need to address the issue of adequate isolation between elements and the issue of the diversity performance of the array, these issues become challenging for mobile terminals. In this thesis dual band arrays for the mobile and the access po

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32

MuÌˆnster, Matthias. "Antenna diversity-assisted adaptive wireless multiuser OFDM systems." Thesis, University of Southampton, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273874.

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33

Govindasamy, Siddhartan 1975. "Multiple-antenna systems in ad-hoc wireless networks." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/44410.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.<br>Includes bibliographical references (leaves 223-229).<br>The increasing demand for wireless communication services has resulted in crowding of the electromagnetic spectrum. The "spectral-commons" model, where a portion of the electromagnetic spectrum is public and used on an ad-hoc basis, has been proposed to free up spectrum that has been allocated but underutilized. Ad-hoc wireless networks (networks with no central control) are also interesting in their own right as they do

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34

Lupupa, Mzabalazo. "Transmit antenna selection in fading wireless communication systems." Master's thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/12110.

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Includes abstract.<br>Includes bibliographical references (leaves 79-83).<br>To address the drawbacks associated with multiple-input multiple-output (MIMO) systems, we propose the use of the transmit antenna selection technique. In transmit antenna selection, the best performing antenna(s) is selected from all the available transmit antennas for transmission. Transmit antenna selection reduces the number of radio frequency chains, and the system complexity while still achieving the goals of multiple antenna systems. In this thesis the performance of a MIMO system employing transmit antenna sel

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35

Adeane, Jaime. "Spatial diversity in wireless communications : multiple antenna systems and virtual antenna arrays." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613069.

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36

Peel, Christian B. "Studies in multiple-antenna wireless communications /." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd331.pdf.

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37

Dietrich, Carl B. "Adaptive Arrays and Diversity Antenna Configurations for Handheld Wireless Communication Terminals." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/27291.

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This dissertation reports results of an investigation into the performance of adaptive beamforming and diversity combining using antenna arrays that can be mounted on handheld radios. Handheld arrays show great promise for improving the coverage, capacity, and power efficiency of wireless communication systems. Diversity experiments using a handheld antenna array testbed (HAAT) are reported here. These experiments indicate that signals received by the antennas in two-element handheld antenna arrays with spacing of 0.15 wavelength or greater can be combined to provide 7-9 dB diversity gain a

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38

Öström, Erik. "Building and experimentally evaluating a smart antenna for low power wireless communication." Thesis, Mälardalen University, School of Innovation, Design and Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-9557.

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<p>In wireless communication there is commonly much unnecessary communication made in directions not pointing towards the recipient. Normally omni directional antennas are being used which sends the same amount of energy in all directions equally. This waste of energy reduces the lifetime of battery powered units and causes more traffic collisions than necessary. One way of minimizing this wasted energy and traffic collisions, is to use another type of antenna called “smart antenna”. These antennas can use selectable radiation patterns depending on the situation and thus drastically minimize t

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39

Ertel, Richard Brian. "Antenna Array Systems: Propagation and Performance." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/28525.

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Due to the enormous performance gains associated with the use of antenna arrays in wireless networks, it is inevitable that these technologies will become an integral part of future systems. This report focuses on signal propagation modeling for antenna array systems and on its relationship to the performance of these systems. Accurate simulation and analytical models are prerequisite to the characterization of antenna array system performance. Finally, an understanding of the performance of these systems in various environments is needed for effective overall network design. This report be

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40

Khuon, Lunal. "Parallel integrated receivers for multiple antenna wireless LAN systems." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/38689.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.<br>Includes bibliographical references (p. 147-154).<br>This thesis focuses on the design of power- and area-efficient parallel integrated receivers for multiple antenna wireless LAN systems. These receivers are part of an indoor parallel radio system that achieves 1 gigabit per second data rates and enables high bandwidth wireless communication between portable user devices and a high speed wired internet connection. Since a critical aspect for efficiency is that an optimal numb

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41

Zhu, Xu. "Wireless MIMO antenna systems for frequency selective fading channels /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202003%20ZHU.

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Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2003.<br>Includes bibliographical references (leaves 116-118). Also available in electronic version. Access restricted to campus users.

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42

Tokgoz, Yeliz. "Performance analysis of antenna diversity based wireless communication systems /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2004. http://wwwlib.umi.com/cr/ucsd/fullcit?p3127633.

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43

Chu, Min. "Phase-shifting techniques for wireless multiple-antenna transmitter applications /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/6002.

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44

Yang, Bo. "Ultra small antenna and low power receiver for Smart Dust Wireless Sensor Networks." College Park, Md.: University of Maryland, 2009. http://hdl.handle.net/1903/9867.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2009.<br>Thesis research directed by: Dept. of Electrical and Computer Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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45

Srivastava, Vikash Umeshchandra. "Smart Antennas & Power Management in Wireless Networks." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/31244.

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The proliferation of wireless ad-hoc networks especially wireless LAN (IEEE 802.11b Standard) in the commercial market in recent years has reached a critical mass. The adoption and strong support of wireless IEEE 802.11 standard, coupled with the consequent decline in costs, has made wireless LAN deployment as one of the fastest growth area in communication access technology. With the ever increasing use of wireless LAN technology the various networks are reaching their full capacity in terms of network throughput, number of users and interference level in the wireless channel. In this thesi

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46

Hasan, Mehedi. "Efficient Algorithms for Reconfigurable Antenna Systems." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7239.

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The main goal of this research is to develop algorithms to facilitate the use of a new type of antenna, called multifunctional reconfigurable antenna (MRA). Traditional antennas have fixed radiation properties which cannot be changed to adapt to different environments. To solve this problem, MRAs, which can dynamically change its operation frequency, radiation patter, and polarization, has gained a significant interest recently. Such antennas can support multiple radio access technologies with different sets of operational requirements. Reconfigurable antennas are considered smart antennas. Th

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47

Ng, Kok Keng. "Smart antenna application in DS-CDMA mobile communication system." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02sep%5FNg.pdf.

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48

Cheng, Shi. "Integrated Antenna Solutions for Wireless Sensor and Millimeter-Wave Systems." Doctoral thesis, Uppsala universitet, Mikrovågs- och terahertzteknik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-111197.

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This thesis presents various integrated antenna solutions for different types of systems and applications, e.g. wireless sensors, broadband handsets, advanced base stations, MEMS-based reconfigurable front-ends, automotive anti-collision radars, and large area electronics. For wireless sensor applications, a T-matched dipole is proposed and integrated in an electrically small body-worn sensor node. Measurement techniques are developed to characterize the port impedance and radiation properties. Possibilities and limitations of the planar inverted cone antenna (PICA) for small handsets are stud

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49

Sadler, David James. "Antenna array systems for wireless communication using multicarrier DS-CDMA." Thesis, Imperial College London, 2004. http://hdl.handle.net/10044/1/11477.

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50

Serugunda, Jonathan. "Energy efficiency of distributed antenna systems for cellular wireless networks." Thesis, University of Bristol, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.685925.

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Cellular network operators are now facing considerable challenges in terms of network capacity and a need to reduce energy consumption by rolling out energy efficient radio access networks (RANs). Use of Distributed Antenna Systems (DAS) is one feature of RAN architecture that can enhance capacity and provide ubiquitous coverage. This thesis sets out to appraise the energy savings of outdoor DAS deployments through simulations. DAS is modelled by placing Remote Radio Heads (RRHs) in a hexagonal cellular network layout and potential energy savings are evaluated using large scale propagation mod

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