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Thematische Bibliographien / Wireless Radio Channel / Dissertationen

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Dissertationen zum Thema „Wireless Radio Channel“

Autor: Grafiati

Veröffentlicht am 23. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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1

Hunter, Brandon Rosel. "Channel probing for an indoor wireless communications channel /." Diss., CLICK HERE for online access, 2003. http://contentdm.lib.byu.edu/ETD/image/etd196.pdf.

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2

Naveed, Anjum Computer Science &amp Engineering Faculty of Engineering UNSW. "Channel assignment in multi-radio multi-channel wireless mesh networks." Awarded by:University of New South Wales. Computer Science & Engineering, 2008. http://handle.unsw.edu.au/1959.4/41500.

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Channel assignment in wireless mesh network (WMN) aims at improving the network throughput by utilizing multiple orthogonal frequency channels to minimize the interference. Interference can be categorized as coordinated and non-coordinated, depending upon the relative location of the interfering links. Compared to coordinated interference, non-coordinated interference has a severe adverse impact on throughput. This thesis is based on the hypothesis that the network throughput can be improved significantly, if channel assignment minimizes non-coordinated interference with priority. We propose a

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3

Amiri, Nehzad Maryam. "Channel assignment protocols for multi-radio multi-channel wireless mesh netwworks." Doctoral thesis, Universitat Politècnica de Catalunya, 2013. http://hdl.handle.net/10803/104156.

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The increasing demand for large and low cost wireless coverage, ranging from campus to city wide areas, has motivated a high interest in multi-hop communications with Wireless Mesh Networks (WMN) based on IEEE 802.11s as the most recent and significant standard. Channel Assignment (CA) is mechanism which selects the best channels for an individual wireless node or the entire network aiming to increase the capacity of the network. Channel assignment has been extensively researched for multi-radio WMNs, but it is still very challenging when it comes to its implementation. Although IEEE 80

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4

Xing, Zitong. "A dynamic radio channel allocation scheme for WLANs." Diss., Online access via UMI:, 2005.

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5

Al-Wajeeh, Taha. "Efficient radio channel modeling for urban wireless sensors networks." Thesis, Poitiers, 2018. http://www.theses.fr/2018POIT2314.

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Le canal de propagation est un élément important pour la fiabilité des simulations et la conception des systèmes sans fil. Les modèles déterministes offrent un bon niveau de précision au prix d'une complexité croissante de calcul, ce qui les rend prohibitifs pour les simulateurs de réseaux de capteurs sans fil (RdC) car ils impliquent de nombreux nœuds distribués à l'échelle d’une ville. Dans ce contexte, l'objectif de cette thèse est de proposer des méthodes déterministes rapides et précises pour modéliser le comportement des ondes électromagnétiques en garantissant le juste compromis entre l

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6

Sng, Sin Hie. "Radio channel modeling for mobile ad hoc wireless networks." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FSng.pdf.

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Thesis (M.S. in Engineering Science (Electrical Engineering))--Naval Postgraduate School, June 2004.<br>Thesis advisor(s): Murali Tummala, Roberto Cristi. Includes bibliographical references (p. 71). Also available online.

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7

Zoli, Marco <1990&gt. "Radio Channel Characterization for Future Wireless Networks and Applications." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amsdottorato.unibo.it/8531/1/main.pdf.

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The new frontier of Above-6GHz bands is revolutionizing the field of wireless telecommunications, requiring new radio channel models to support the development of future Giga-bit-per-second systems. Recently, deterministic ray-based models as Ray Tracing are catching on worldwide thanks to their frequency-agility and reliable predictions. A modern 3D Ray Tracing developed at University of Bologna has been indeed calibrated and used to investigate the Above-6GHz radio channel properties. As starting point, an item-level electromagnetic characterization of common items and materials has b

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8

Randle, Andrew Martin. "Dynamic radio channel effects from L-band foliage scatter." Thesis, University of York, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341630.

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9

Andreu, Estellés Carlos. "UWB radio channel and diversity characterization for wireless implanted devices." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/111836.

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Las redes de área corporal permiten la interconexión de nodos independientes situados dentro o fuera de la superficie corporal o, incluso, alejados de dicha superficie. En cuanto a las comunicaciones intracorporales, el establecimiento de un enlace robusto con una cápsula endoscópica o con un marcapasos, son ejemplos de los avances tecnológicos conseguidos en las últimas décadas. A pesar de estos desarrollos en asistencia sanitaria, los estándares actuales para este tipo de comunicaciones no permiten conexiones inalámbricas de alta velocidad de transmisión, las cuales son comunes en los servic

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10

Yoon, Suk-Un. "Dynamic Radio Resource Allocation in Wireless Sensor and Cognitive Radio Networks." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1259768264.

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11

Song, Liying Tugnait Jitendra K. "Channel estimation and equalization for doubly-selective channels using basis expansion models." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SPRING/Electrical_and_Computer_Engineering/Dissertation/Song_Liying_29.pdf.

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12

Grace, David. "Distributed Dynamic Channel Assignment for the wireless environment." Thesis, University of York, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288041.

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13

Choi, Sangil. "Minimum interference channel assignment for multicast in multi-channel multi-radio wireless mesh networks." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1468073.

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14

Wang, Xufang. "Multiresolution joint source and channel coding for wireless communications /." Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk:8888/cgi-bin/hkuto%5Ftoc%5Fpdf?B23340113.

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15

Tenneti, Shivaram Venkata. "Channel assignment for throughput improvement in multi-radio wireless mesh networks." Thesis, Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/tenneti/TennetiS1207.pdf.

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16

He, Shuangchi. "Doubly-selective channel estimation and equalization using superimposed training and expansion models." Auburn, Ala., 2007. http://repo.lib.auburn.edu/07M%20Dissertations/HE_SHUANGCHI_5.pdf.

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17

Skalli, Habiba. "Channel assignment, routing and cross layer issues for multi-radio multi-channel wireless mesh netorks." Thesis, IMT Alti Studi Lucca, 2009. http://e-theses.imtlucca.it/16/1/Skalli_phdtheis.pdf.

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Next generation wireless mobile communications will be driven by converged networks that integrate disparate technologies and services. The Wireless Mesh Network (WMN) is envisaged to be one of the key components in the converged networks of the future, providing flexible, high-bandwidth wireless backhaul over large geographical areas. While single radio mesh nodes, operating on a single channel suffer from capacity constraints, equipping mesh routers with multiple radios using multiple non-overlapping channels can significantly alleviate the capacity problem and increase the aggregate bandwi

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18

Durgin, Gregory David. "Theory of Stochastic Local Area Channel Modeling for Wireless Communications." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/29843.

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This dissertation outlines work accomplished in the pursuit of this degree. This report is also designed to be a general introduction to the concepts and techniques of small-scale radio channel modeling. At the present time, there does not exist a comprehensive introduction and overview of basic concepts in this field. Furthermore, as the wireless industry continues to mature and develop technology, the need is now greater than ever for more sophisticated channel modeling research. Each chapter of this preliminary report is, in itself, a stand-alone topic in channel modeling theory. Culle

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19

王徐芳 and Xufang Wang. "Multiresolution joint source and channel coding for wireless communications." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31225299.

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20

Mavrakis, Dimitrios. "Measurement and prediction of the wideband indoor radio and infrared channels." Thesis, University of Surrey, 2002. http://epubs.surrey.ac.uk/843991/.

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This thesis is focused on a study on modeling and measurement of the indoor radio and infrared channels. Both channels have been studied, compared and their vital differences identified. Initially, an infrared channel model was developed that was not similar to any existing models for the infrared domain. The wireless diffuse infrared channel is solely used indoors and is usually confined within a room. Conventional channel models are described, but their disadvantage is heavy time and processor requirements. A new model is introduced, in which the approach is different from the traditional me

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21

Yu, Kai. "Modeling of Multiple-Input Multiple-Output Radio Propagation Channels." Licentiate thesis, KTH, Signals, Sensors and Systems, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1478.

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<p>In recent years, multiple-input multiple-output (MIMO)systems appear to be very promising since they can provide highdata rates in environments with sucient scattering byexploiting the spatial domain. To design a real MIMO wirelesssystem and predict its performance under certain circumstances,it is necessary to have accurate MIMO wireless channel modelsfor dierent scenarios. This thesis presents dierent models forindoor MIMO radio propagation channels based on 5.2 GHz indoorMIMO channel measurements.The recent research on MIMO radio channel modeling isbriey reviewed in this thesis. The mode

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22

Vig, Jyotika. "ISM Band Indoor Wireless Channel Amplitude Characteristics: Path Loss and Gain vs. Distance and Frequency." Ohio University / OhioLINK, 2004. http://www.ohiolink.edu/etd/view.cgi?ohiou1091111060.

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23

Thavarajah, Arunasala Iyer. "A study of fixed channel assignment algorithms for cellular mobile radio systems." Thesis, Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21241144.

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24

Adegoke, Elijah. "Radio frequency channel characterization for energy harvesting in factory environments." Thesis, Loughborough University, 2018. https://dspace.lboro.ac.uk/2134/33412.

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This thesis presents ambient energy data obtained from a measurement campaign carried out at an automobile plant. At the automobile plant, ambient light, ambient temperature and ambient radio frequency were measured during the day time over two days. The measurement results showed that ambient light generated the highest DC power. For plant and operation managers at the automobile plant, the measurement data can be used in system design considerations for future energy harvesting wireless sensor nodes at the plant. In addition, wideband measurements obtained from a machine workshop are present

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25

Huang, Kaiyu. "High Security Cognitive Radio Network via Instantaneous Channel Information." Wright State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1558574722164809.

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26

Pettersson, Stefan. "Radio resource management for wireless indoor communication systems : performance and implementation aspects." Doctoral thesis, KTH, Signals, Sensors and Systems, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3743.

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<p>In this thesis, we investigate several radio resourcemanagement (RRM) techniques and concepts in an indoorenvironment with a dense infrastructure. Future wireless indoorcommunication networks will very likely be implemented atplaces where the user concentration is very high. At these hotspots, the radio resources must be used efficiently. The goalis to identify efficient RRM techniques and concepts that aresuitable for implementation in an indoor environment.</p><p>Handling the high level of co-channel interference is shownto be of paramount importance. Several investigations in thethesis p

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27

Ta, Duc-Tuyen. "Channel Surveillance Strategy and Interference Reduction in Future Wireless Networks." Electronic Thesis or Diss., Paris, ENST, 2018. http://www.theses.fr/2018ENST0039.

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La révolution des télécommunications sans fil crée une énorme demande pour l’'accès au spectre des fréquences radio avec l'explosion du nombre d'appareils connectés et la grande diversité des cas d'utilisation et des exigences. Cependant, le conflit entre la pénurie de spectre libre et la sous-utilisation du spectre entraîne des inefficacités importantes des communications sans fil et entrave le déploiement de nouvelles applications. Récemment, la radio cognitive (RC) est apparue comme une technologie prometteuse pour pallier la pénurie de spectre et mieux utiliser les ressources en permettant

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28

Hatami, Ahmad. "Application of channel modeling for indoor localization using TOA and RSS." Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-053106-160141/.

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29

Xu, Hao. "Terrestrial radio wave propagation at millimeter-wave frequencies." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/27522.

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This research focuses on radio wave propagation at millimeter-wave frequencies. A measurement based channel characterization approach is taken in the investigation. First, measurement techniques are analyzed. Three types of measurement systems are designed, and implemented in measurement campaigns: a narrowband measurement system, a wideband measurement system based on Vector Network Analyzer, and sliding correlator systems at 5.8+AH4AXA-mbox{GHz}, 38+AH4AXA-mbox{GHz} and 60+AH4AXA-mbox{GHz}. The performances of these measurement systems are carefully compared both analytically and experimen

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30

Jamison, James. "Leveraging Software-Defined Radio for a Scalable Wide-band Wireless Channel Measurement System." ScholarWorks @ UVM, 2018. https://scholarworks.uvm.edu/graddis/969.

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Wireless channel characterization is important for determining both the requirements for a wireless system and its resulting reliability. Wireless systems are becoming ever more pervasive and thus are expected to operate in increasingly more cluttered environments. While these devices may be fixed in location, the channel is still far from ideal due to multipath. Under such conditions, it is desirable to have a means of taking wireless channel measurements in a low-cost and distributed manner, which is not always possible using typical channel measurement equipment. This thesis leverages a sof

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31

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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32

Kakumanu, Sandeep. "Algorithms and protocols for multi-channel wireless networks." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42834.

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A wireless channel is shared by all devices, in the vicinity, that are tuned to the channel, and at any given time, only one of the devices can transmit information. One way to overcome this limitation, in throughput capacity, is to use multiple orthogonal channels for different devices, that want to transmit information at the same time. In this work, we consider the use of multiple orthogonal channels in wireless data networks. We explore algorithms and protocols for such multi-channel wireless networks under two broad categories of network-wide and link-level challenges. Towards handling t

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33

Chow, Y. C. "Performance analysis of bandwidth-efficient modulation schemes for high capacity wireless networks 1." Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337257.

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34

Shah, Ibrar Ali. "Channel assignment and routing in cooperative and competitive wireless mesh networks." Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/6568.

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In this thesis, the channel assignment and routing problems have been investigated for both cooperative and competitive Wireless Mesh networks (WMNs). A dynamic and distributed channel assignment scheme has been proposed which generates the network topologies ensuring less interference and better connectivity. The proposed channel assignment scheme is capable of detecting the node failures and mobility in an efficient manner. The channel monitoring module precisely records the quality of bi-directional links in terms of link delays. In addition, a Quality of Service based Multi-Radio Ad-hoc On

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35

Kakumanu, Sandeep. "Component Based Channel Assignment in Single Radio, Multichannel Ad hoc Networks." Thesis, Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19870.

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In this work, we consider the channel assignment problem in single radio multi-channel mobile ad-hoc networks. Specifically, we investigate the granularity of channel assignment decisions that gives the best trade-off in terms of performance and complexity. We present a new granularity for channel assignment that we refer to as component level channel assignment. The strategy is relatively simple, and is characterized by several impressive practical advantages. We also show that the theoretical performance of the component based channel assignment strategy does not lag significantly behind

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36

Abbasi, Qammer Hussain. "Radio channel characterisation and system-level modelling for ultra wideband body-centric wireless communications." Thesis, Queen Mary, University of London, 2012. http://qmro.qmul.ac.uk/xmlui/handle/123456789/2406.

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The next generation of wireless communication is evolving towards user-centric networks, where constant and reliable connectivity and services are essential. Bodycentric wireless network (BCWN) is the most exciting and emerging 4G technology for short (1-5 m) and very short (below 1 m) range communication systems. It has got numerous applications including healthcare, entertainment, surveillance, emergency, sports and military. The major difference between the BCWN and conventional wireless systems is the radio channel over which the communication takes place. The human body is a hostile mediu

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37

Koshy, Ronnie. "A Joint Radio and Channel Assignment (JRCA) scheme for 802.11-based wireless mesh networks." [Ames, Iowa : Iowa State University], 2009.

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38

Yarkan, Serhan. "Environment, channel, and interference awareness for next generation wireless networks." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0003269.

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39

M, M. Galib Asadullah. "Robust wireless communications under co-channel interference and jamming." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22571.

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Thesis (Ph. D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Gordon L. Stuber; Committee Member: Alfred D. Andrew; Committee Member: John A. Buck; Committee Member: Steven W. McLaughlin; Committee Member: Ye (Geoffrey) Li.

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Yücek, Tevfik. "Channel, spectrum, and waveform awareness in OFDM-based cognitive radio systems." Scholar Commons, 2007. http://scholarcommons.usf.edu/etd/2425.

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The radio spectrum is becoming increasingly congested everyday with emerging technologies and with the increasing number of wireless devices. Considering the limited bandwidth availability, accommodating the demand for higher capacity and data rates is a challenging task, requiring innovative technologies that can offer new ways of exploiting the available radio spectrum. Cognitive radio arises to be a tempting solution to the spectral crowding problem by introducing the notion of opportunistic spectrum usage. Because of its attractive features, orthogonal frequency division multiplexing (OFDM

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41

鄭价昌 and Kai-cheong Chang. "Adaptive channel equalisation technique for wideband time-division multiple access digital mobile radio communications systems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31212888.

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42

Chang, Kai-cheong. "Adaptive channel equalisation technique for wideband time-division multiple access digital mobile radio communications systems /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17590371.

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43

Ng, Ka Wai. "Generalized bit and power allocation for single and multi-user OFDM MIMO system in frequency selective fading channel /." View abstract or full-text, 2003. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202003%20NG.

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44

Kretschmer, Mathias Raimund Otto. "Integration of unidirectional technologies into wireless back-haul architecture." Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/6574.

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Back-haul infrastructures of today's wireless operators must support the triple-play services demanded by the market or regulatory bodies. To cope with increasing capacity demand, the EU FP7 project CARMEN has developed a cost-effective heterogeneous multi-radio wireless back-haul architecture, which may also leverage the native multicast capabilities of broadcast technologies such as DVB-T to off-load high-bandwidth broadcast content delivery. However, the integration of such unidirectional technologies into a packet-switched architecture requires careful considerations. The contribution of t

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45

Garkusha, Sergey, and Maryna Ievdokymenko. "Classification and Analysis of Methods of the Channels Distribution in Multichannel Mesh Networks IEEE 802.11." Thesis, Modern Problems of Radio Engineering, Telecommunications and Computer Science. Proceedings of the international Conference TCSET’2012, 2012. http://dspace.uccu.org.ua/handle/123456789/869.

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46

Chen, Wei-Chuan. "A Multi-Channel, Impedance-Matching, Wireless, Passive Recorder for Medical Applications." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555661316375242.

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47

Spencer, Quentin H. "Transmission Strategies for Wireless Multi-user, Multiple-Input, Multiple-Output Communication Channels." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd378.pdf.

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48

Pirkl, Ryan J. "Measurement-based investigations of radio wave propagation: an exposé on building corner diffraction." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33961.

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Predicting performance metrics for the next-generation of multi-mode and multi-antenna wireless communication systems demands site-specific knowledge of the wireless channel's underlying radio wave propagation mechanisms. This thesis describes the first measurement system capable of characterizing individual propagation mechanisms in situ. The measurement system merges a high-resolution spatio-temporal wireless channel sounder with a new field reconstruction technique to provide complete knowledge of the wireless channel's impulse response throughout a 2-dimensional region. This wealth of d

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49

Walker, Edward A. "Factors affecting the bit error rate performance of the indoor radio propagation channel for 2.3-2.5 GHz frequency band." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2002. https://ro.ecu.edu.au/theses/726.

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The use of wireless in buildings based on microwave radio technology has recently become a viable alternative to the traditional wired transmission media. Because of the portable nature of radio transceivers, the need for extensive cabling of buildings with either twisted pair, coaxial, or optical fibre cable is eliminated. This is particularly desirable where high user mobility occurs and existing wiring is not in place, or buildings are heritage in nature and extensive cabling is seen as intrusive. Economic analysis bas also shown that significant labour cost savings can result by using a ra

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Panahandeh, Ali. "Multi-polarized sensing for cognitive radio." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209586.

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In this thesis the multi-polarized Cognitive Radios are studied. Cognitive Radios are proposed as an interesting way to more efficiently use the frequency resources. A Cognitive Radio secondary user finds the frequency bands which are not utilized by primary users and communicates on them without interfering with the primary users. In order to achieve this goal the secondary user must be able to detect reliably and quickly the presence of a primary user in a frequency band. In this thesis, the impact of polarization on the spectrum sensing performances of cognitive radio systems is studied.<p>

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