Dissertations / Theses: 'Broadband communication'

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Al-Yatama, Anwar. "Quantization and routing in broadband networks." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/15374.

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Bean, Nigel Geoffrey. "Statistical multiplexing in broadband communication networks." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282808.

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Xia, Bin, and 夏斌. "Enhanced techniques for broadband wireless communications." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B29144231.

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Wu, Peiran. "Transceiver optimization for broadband cooperative wireless communication systems." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/55220.

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Cooperative broadband communications is a promising technique to improve the reliability, throughput, and coverage of the next generation wireless communication systems. Single-carrier transmission with frequency-domain equalization (SC-FDE) and orthogonal frequency-division multiplexing (OFDM) are the prevailing block based broadband schemes widely adopted in major wireless standards. Traditionally, these broadband schemes are deployed for point-to-point communications without the cooperation of any intermediate transmission nodes. However, as the communication systems evolve, both service providers and users are demanding higher data rates and non-seamless connection over large areas. As a result, it is necessary to design novel transceiver architectures that meet these stringent requirements. This dissertation proposes four such cooperative transceiver designs which are tailored for different communication scenarios. Firstly, for single-user SC-FDE broadband systems with multiple multi-antenna amplify-and-forward (AF) relays, we optimize the relay beamforming (rBF) filters and destination equalization filter based on the minimum mean-square error (MSE) criterion under an aggregate relay transmit power constraint. We also propose suboptimal rBF schemes which perform close to the optimal rBF scheme. Subsequently, we investigate single-user SC-FDE broadband MIMO AF relay systems. By exploiting the properties of the block-circulant channel matrices and the majorization theory, the problem is transformed into an equivalent power optimization problem with scalar variables. An alternating optimization algorithm is devised to obtain the optimal solution for the source and relay power allocation. Thirdly, we study a robust transceiver design for multiuser broadband systems with multiple single-antenna AF relays and in the presence of channel estimation errors. Our proposed design treats multiuser SC-FDE and OFDM based systems in a unified manner, where the goal is to maximize the network ABR subject to different types of relay power constraints. Lastly, we propose a robust transceiver design for single-user SC-FDE based multi-hop full-duplex decode-and-forward relay systems. The optimization problem is formulated as the minimization of the sum MSE or maximum MSE of different hops which takes into account the loopback interference of the full-duplex relays. We propose two algorithms to solve the resulting non-convex power allocation problems based on sequential geometric programming and alternating optimization, respectively.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate

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Lusina, Paul James. "Ka-broadband satellite communication using cyclostationary parabolic beamforming." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq22345.pdf.

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Ganesh, Babu Thimma V. J. "Performance analysis of broadband multimedia wireless communication networks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ63989.pdf.

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Ali, Saqib. "Non-linearity mitigation in wireless broadband communication systems." Thesis, Lancaster University, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.543952.

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De, Stefano Timothy. "Information communication technology, broadband infrastructure and firm performance." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/37298/.

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雷靜 and Jing Lei. "Frequency synchronization methods for digital broadband receivers." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31244427.

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Sun, Fanglei, and 孫芳蕾. "Resource allocation in broadband wireless networks." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40887868.

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Sun, Fanglei. "Resource allocation in broadband wireless networks." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40887868.

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Reim, Klaus Franz. "Broadband optical quantum memory." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:d0d73ed2-32c2-4de9-8b3d-fcf8b88b22b4.

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This thesis is about the experimental implementation of a high-speed and robust quantum memory for light. A novel far off-resonant Raman approach to ensemble-based quantum memories in a room-temperature environment is developed and demonstrated. Storage and retrieval of sub-nanosecond, weak coherent light pulses at the single-photon-level with total efficiencies exceeding 30% and storage times of up to 4 μs are achieved. The coherence of the memory is shown by directly interfering a copy of the incident signal with the retrieved signal from the memory. The unconditional noise floor of the memory is found to be low enough to operate the memory in the quantum regime at room temperature. Multiple readout of a single stored excitation is demonstrated, suggesting that 100% readout is possible in different temporal modes. Furthermore, first results regarding the storage and retrieval of polarisation encoded qubits are obtained. This and the memory’s ability to operate in the quantum regime at room temperature with a low unconditional noise floor illustrate its potential usefulness for real world applications.

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Pitsillides, Andreas, and Andreas Pitsillides@ucy ac cy. "Control structures and techniques for broadband-ISDN communication systems." Swinburne University of Technology, 1993. http://adt.lib.swin.edu.au./public/adt-VSWT20060321.132650.

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A structured organisation of tasks, possibly hierarchical, is necessary in a BISDN network due to the complexity of the system, its large dimension and its physical distribution in space. Feedback (possibly supplemented by feedforward) control has an essential role in the effective and efficient control of BISDN. Additionally, due to the nonstationarity of the network and its complexity, a number of different (dynamic) modelling techniques are required at each level of the hierarchy. Also, to increase the efficiency of the network and allow flexibility in the control actions (by extending the control horizon) the (dynamic) tradeoff between service-rate, buffer-space, cell-delay and cell-loss must be exploited. In this thesis we take account of the above and solve three essential control problems, required for the effective control of BISDN. These solutions are suitable for both stationary and nonstationary conditions. Also, they are suitable for implementation in a decentralised coordinated form, that can form a part of a hierarchical organisation of control tasks. Thus, the control schemes aim for global solutions, yet they are not limited by the propagation delay, which can be high in comparison to the dynamics of the controlled events. Specifically, novel control approaches to the problems of Connection Admission Control (CAC), flow control and service-rate control are developed. We make use of adaptive feedback and adaptive feedforward control methodologies to solve the combined CAC and flow control problem. Using a novel control concept, based on only two groups of traffic (the controllable and uncontrollable group) we formulate a problem aimed at high (unity) utilisation of resources while maintaining quality of service at prescribed levels. Using certain assumptions we have proven that in the long term the regulator is stable and that it converges to zero regulation error. Bounds on operating conditions are also derived, and using simulation we show that high utilisation can be achieved as suggested by the theory, together with robustness for unforeseen traffic connections and disconnections. Even with such a high efficiency and strong properties on the quality of service provided, the only traffic descriptor required from the user is that of the peak rate of the uncontrollable traffic. A novel scheme for the dynamic control of service-rate is formulated, using feedback from the network queues. We use a unified dynamic fluid flow equation to describe the virtual path (VP) and hence formulate two illustrative examples for the control of service-rate (at the VP level). One is a nonlinear optimal multilevel implementation, that features a coordinated decentralised solution. The other is a single level implementation that turns out to be computationally complex. Therefore, for the single level implementation the costate equilibrium solution is also derived. For the optimal policies derived, we discuss their implementation complexity and provide implementable solutions. Their performance is evaluated using simulation. Additionally, using an ad hoc approach we have extended previous published works on the decentralised coordinated control of large scale nonlinear systems to also deal with time-delayed systems.

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Harbi, Yahya. "Enhanced air-interfaces for fifth generation mobile broadband communication." Thesis, University of York, 2017. http://etheses.whiterose.ac.uk/19155/.

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In broadband wireless multicarrier communication systems, intersymbol interference (ISI) and intercarrier interference (ICI) should be reduced. In orthogonal frequency division multiplexing (OFDM), the cyclic prefix (CP) guarantees to reduce the ISI interference. However, the CP reduces spectral and power efficiency. In this thesis, iterative interference cancellation (IIC) with iterative decoding is used to reduce ISI and ICI from the received signal in multicarrier modulation (MCM) systems. Alternative schemes as well as OFDM with insufficient CP are considered; filter bank multicarrier (FBMC/Offset QAM) and discrete wavelet transform based multicarrier modulation (DWT-MCM). IIC is applied in these different schemes. The required components are calculated from either the hard decision of the demapper output or the estimated decoded signal. These components are used to improve the received signal. Channel estimation and data detection are very important parts of the receiver design of the wireless communication systems. Iterative channel estimation using Wiener filter channel estimation with known pilots and IIC is used to estimate and improve data detection. Scattered and interference approximation method (IAM) preamble pilot are using to calculate the estimated values of the channel coefficients. The estimated soft decoded symbols with pilot are used to reduce the ICI and ISI and improve the channel estimation. The combination of Multi-Input Multi-Output MIMO and OFDM enhances the air-interface for the wireless communication system. In a MIMO-MCM scheme, IIC and MIMO-IIC-based successive interference cancellation (SIC) are proposed to reduce the ICI/ISI and cross interference to a given antenna from the signal transmitted from the target and the other antenna respectively. The number of iterations required can be calculated by analysing the convergence of the IIC with the help of EXtrinsic Information Transfer (EXIT) charts. A new EXIT approach is proposed to provide a means to define performance for a given outage probability on quasi-static channels.

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Fragoulis, Ioannis. "An investigation of two broadband HF shipboard communication antennas." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA245608.

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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, December 1990.
Thesis Advisor(s): Adler, Richard W. Second Reader: Vincent, Wilbur R. "December 1990." Description based on title screen as viewed on March 30, 2010. DTIC Identifier(s): Ship Antennas, Communication Antennas, Antenna Radiation Patterns, High Frequency, Multiwire Antennas, Theses. Author(s) subject terms: Inverted Cone Antenna, Computer Antenna Modeling, NEC, HF Antennas, Shipboard Antenna. Includes bibliographical references (p. 95). Also available in print.

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Tan, Zhijie. "The broadband ISDN source simulator /." Title page, abstract and contents only, 1991. http://web4.library.adelaide.edu.au/theses/09ENS/09enst1612.pdf.

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Mundi, Anuj V. "PLC-WiFi hybrid broadband Internet deployment and security /." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0006964.

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Mysore, Sudhesh M. "Advances in optical power budgets and bandwidth capacity of broadband networks /." free to MU campus, to others for purchase, 1999. http://wwwlib.umi.com/cr/mo/fullcit?p9953885.

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Jain, Nidhi. "Single carrier frequency domain equalization for broadband wireless communications." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/5996.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on November 13, 2008) Includes bibliographical references.

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Ahmadvand, Nima. "Wavelength division multiplexing cross connect networks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ30066.pdf.

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Chu, Carlson. "Development of broadband information infrastructure in Hong Kong /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19876804.

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Zhu, Yu. "Frequency domain equalization for single carrier broadband wireless communications /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?ECED%202007%20ZHUY.

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Zheng, Yong. "The next generation network issues and trends : a dissertation submitted to Auckland University of Technology as part of the requirements for the degree of Master of Computer and Information Sciences, November 2008 /." Click here to access this resource online, 2008. http://hdl.handle.net/10292/680.

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Thesis (MCIS - Computer and Information Sciences) -- AUT University, 2008.
Includes bibliographical references. Also held in print (viii, 47 leaves ; 30 cm.) in the Archive at the City Campus (T 621.3821 ZHE)

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Desai, Khyati. "Bandwidth optimization using content aliasing of proxy server." [Chico, Calif. : California State University, Chico], 2009. http://hdl.handle.net/10211.4/82.

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Adas, Abdelnaser M. "Supporting multimedia traffic in broadband networks." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/14849.

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Mahdy, Ahmed M. "A broadband infrastructure for ad hoc networks with optical wireless." [Lincoln, Neb. : University of Nebraska-Lincoln], 2005. http://0-www.unl.edu.library.unl.edu/libr/Dissertations/2005/MahdyDis.pdf.

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Johansson, Leif Albin. "Broadband millimetre-wave radio over fibre systems." Thesis, University College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272419.

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Nan, Zhou. "Dynamic resource management for next generation broadband wireless communication systems." Thesis, University of Liverpool, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.539491.

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Ghiaasi-Hafezi, Golsa. "Broadband Low Noise Frequency Synthesizers for Future Wireless Communication Systems." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1253600913.

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Sinha, Amit Kumar Medhi Deepankar. "Methodologies and analyses of broadband access network traffic." Diss., UMK access, 2007.

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Thesis (Ph.D.)--School of Computing and Engineering. University of Missouri--Kansas City, 2007.
"A dissertation in computer networking and telecommunications networking." Advisor: Deep Medhi. Typescript. Vita. Title from "catalog record" of the print edition Description based on contents viewed July 30, 2008. Includes bibliographical references (leaves 94-100). Online version of the print edition.

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Green, Robert James. "Advanced error management in high-speed communication networks." Thesis, University of Birmingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368287.

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Chen, Xiaoqiang. "Congestion control and routing in integrated broadband networks." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240046.

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Mertzanis, Ioannis. "QOS provisioning for broadband satellite-ATM multimedia networks." Thesis, University of Surrey, 1999. http://epubs.surrey.ac.uk/773030/.

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This work is motivated by the current trends in future broadband communication networks. On the one hand, the latest developments and experimentation with the Asynchronous Transfer mode (ATM) technology shows that that ATM is going to be the future transport mechanism in many private and public networks. This is driven by the need to efficiently support a large population of widebandlbroadband users with different data traffic characteristics and certain Quality of Service (QoS) guarantees. On the other hand, the interest in satellites and their role in the future broadband multimedia communications systems, has grown considerably since they can very quickly and economically extend the boundaries of the terrestrial mobile and fixed networks coverage. On-board satellite signal regeneration and' ATM-like' switching is part of the latest experimental developments by many payload manufacturers. In this thesis, the focus is on the Grade of Service (GoS) and QoS provisioning in future broadband satellite multimedia systems by introducing new means for their performance evaluation. The investigation includes modelling techniques for both Geostationary (GEO) and non-GEO systems. An extensive set of representative results derived analytically and by simulation are presented assuming different mixed traffic scenarios. A new methodology for the Available Bit Rate (ABR) service class capacity estimation and the CAC strategy that needs to be adopted in S-ATM systems is developed. Moreover, the performance evaluation of bandwidth reservation techniques for non-GEO satellite constellations is investigated and new rules for maintaining specified GoS performance are proposed. This work contributes towards the definition of a satellite network infrastructure that best satisfies the requirements of an integrated solution with Broadband-Integrated Services Digital Network (B-ISDN).

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Stevens, Irena. "Policy implications of municipal investment in Georgia's wireline broadband networks." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49081.

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The Community Broadband Investment Act, introduced in the Georgia legislature in 2012 and 2013 is a reflection of a broader national debate over the role of government investment in broadband infrastructure. The bill would limit local governments' ability to invest in broadband infrastructure for their communities because of arguments that government entry into the telecommunications sector crowds-out private competition, does not serve the public adequately, and lacks a comprehensive business model or best practices. A closer look at the history of utility regulation and various economic perspectives on the proper government role in utility provision reveals that government has had an extensive historical role in utility infrastructure investment and regulation, and several economic doctrines support the conclusion that government can be helpful in facilitating effective broadband service to their communities. Case studies of different models of municipal broadband networks in Georgia reveal that government entry can facilitate private sector competition, often provides quality service, and has a set of best practices. The success of municipal broadband reveals an evolution in the approach to telecommunications regulation from a regulated monopoly approach to a public-private cooperation approach which considers public participation with private entities on a dynamic scale. Government-entry into the broadband market was a rational decision for several Georgia communities due to their unique set of circumstances, and while municipal broadband may not be the answer to many communities' problems with meeting public demand, communities should be allowed to maintain flexibility in their decision-making about how to best serve their residents, effectively allowing them to decide which combination of public and private advantages they can leverage to meet the demand of their communities in relation to their unique local characteristics.

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Li, Weichang. "Estimation and tracking of rapidly time-varying broadband acoustic communication channels /." Cambridge, Mass. : Woods Hole, Mass. : Massachusetts Institute of Technology ; Woods Hole Oceanographic Institution, 2006. http://hdl.handle.net/1912/1509.

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Originally issued as the author's thesis (Ph. D.)--Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2006.
"February 2006". "Doctoral dissertation." "Department of origin: Applied Ocean Physics and Engineering." "Joint Program in Oceanography/Applied Ocean Science and Engineering"--Cover. Bibliography: p. 197-206.

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Kipens, George Alfred. "A SAW-based commutation signaling modem for broadband indoor wireless communication." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ37265.pdf.

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Huang, Wenxiang. "A broadband RF CMOS frond-end for multi-standard wireless communication." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1170882877.

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Kipens, George. "A Saw-based commutation signaling modem for broadband indoor wireless communication /." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27998.

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Commutation signaling is a bandwidth expanding modulation scheme that is robust to multipath induced intersymbol interference. Surface Acoustic Wave (SAW) technology is very suitable for implementing high-speed commutation signaling modems. A SAW-based commutation signaling modem for broadband indoor wireless communication is described. The differential coherent detector is a key element since it performs IF matched filtering and differentially coherent demodulation of the received signal. A commutation signaling differential coherent detector has been implemented using SAW and analog silicon technologies. The bit rate is 40 Mb/s, the chip rate is 200 Mc/s and the operating frequency (IF frequency) is 1 GHz. A multicarrier commutation signaling modem uses frequency-division multiplexed subcarriers to combine a number of lower rate bit streams in order to achieve high-rate data transmission. A computer simulation study has been carried out to evaluate the performance of multicarrier commutation signaling over a nonlinear multipath channel.

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Li, Weichang 1972. "Estimation and tracking of rapidly time-varying broadband acoustic communication channels." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/39205.

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Thesis (Ph. D.)--Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and the Woods Hole Oceanographic Institution), 2006.
Includes bibliographical references (p. 197-206).
This thesis develops methods for estimating wideband shallow-water acoustic communication channels. The very shallow water wideband channel has three distinct features: large dimension caused by extensive delay spread; limited number of degrees of freedom (DOF) due to resolvable paths and inter-path correlations; and rapid fluctuations induced by scattering from the moving sea surface. Traditional LS estimation techniques often fail to reconcile the rapid fluctuations with the large dimensionality. Subspace based approaches with DOF reduction are confronted with unstable subspace structure subject to significant changes over a short period of time. Based on state-space channel modeling, the first part of this thesis develops algorithms that jointly estimate the channel as well as its dynamics. Algorithms based on the Extended Kalman Filter (EKF) and the Expectation Maximization (EM) approach respectively are developed.
(cont.) Analysis shows conceptual parallels, including an identical second-order innovation form shared by the EKF modification and the suboptimal EM, and the shared issue of parameter identifiability due to channel structure, reflected as parameter unobservability in EKF and insufficient excitation in EM. Modifications of both algorithms, including a two-model based EKF and a subspace EM algorithm which selectively track dominant taps and reduce prediction error, are proposed to overcome the identifiability issue. The second part of the thesis develops algorithms that explicitly find the sparse estimate of the delay-Doppler spread function. The study contributes to a better understanding of the channel physical constraints on algorithm design and potential performance improvement. It may also be generalized to other applications where dimensionality and variability collide.
by Weichang Li.
Ph.D.

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Jemai, Jaouhar. "On the calibration of channel models for indoor broadband radio communication." Aachen Shaker, 2008. http://d-nb.info/99435889X/04.

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Wang, Jun. "Interface assignment, bandwidth allocation and scheduling for wireless mesh networks /." access full-text access abstract and table of contents, 2009. http://libweb.cityu.edu.hk/cgi-bin/ezdb/thesis.pl?phd-cs-b30082705f.pdf.

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Thesis (Ph.D.)--City University of Hong Kong, 2009.
"Submitted to Department of Computer Science in partial fulfillment of the requirements for the degree of Doctor of Philosophy." Includes bibliographical references (leaves [104]-116)

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Chen, Hong Xu, and n/a. "A high performance ATM switch architecture." Swinburne University of Technology, 2006. http://adt.lib.swin.edu.au./public/adt-VSWT20070405.172354.

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ATM is based on the efforts of the ITU-T Broadband Integrated Services Digital Network (B-ISDN) standard. It was originally conceived as a high-speed transfer technology for voice, video, and data over public networks. The ATM Forum has broadened the ITU-T�s vision of ATM for extended use over public and private networks, multi-protocol support and mobile ATM. There are also some ATM applications in High Performance Computing (HPC). ATM is a packet switching technique based on a virtual circuit mechanism. Data flows are statistically multiplexed and communication resources are dynamically shared. Therefore the high performance ATM switch is essential for quality of services (QoS). This thesis introduces typical ATM switch architecture design and analyses design problems. The research objective is to propose a switch architecture design that can solve or improve those existing problems to achieve a superior performance. The research goal is an integrated ATM switch architecture that will handle both unicast and multicast packets. Unlike the usual design for the multicast ATM switch which concentrates on a cell copy network with a unicast switching network, the proposed switch architecture processes the network packets in a single switching block, and allows unicast and multicast packets to co-exist without competing. The switch design has a simple topology and operation principle and is easy to implement. Furthermore, no copy network is required. Three major components are proposed to form the core of the new switch architecture: the parallel buffering strategy for improved buffer performance, the fast table lookup algorithm for packet duplication and routing, and the relay ring controller for solving the contention problem associated with multiple packets destined for the same output port. A mathematical model is presented and its numerical results are analysed. In addition, the simulation algorithms for the proposed switching design are presented and compared against the switching design with input and output buffering strategies. The simulation results are also compared and analysed against the numerical results. A multicast traffic model is also presented. Its performance calculation for the proposed switch is achieved through simulation. Performance analysis is compared against the output buffering switch under the same multicast traffic model. The performance analysis shows that the proposed switch architecture achieves high throughput with low cell loss rate and low time delay. Its performance can be as good as the output buffering strategy or better. Therefore the proposed switch design has solved the problems associated with input and output buffering. This thesis also analyses the complexity of the proposed switch architecture and suggests a topology to build a large scale ATM switch. The suitability and feasibility for production implementation are also addressed.

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Wilkinson, Martha L. "Bridging the digital divide : framing whiteness /." View online, 2010. http://repository.eiu.edu/theses/docs/32211131575047.pdf.

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Kozak, Nadine Irène. "On the last mile the effects of telecommunications regulation and deregulation in the rural western United States and Canada /." Diss., [La Jolla] : University of California, San Diego, 2010. http://wwwlib.umi.com/cr/ucsd/fullcit?p3390098.

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Thesis (Ph. D.)--University of California, San Diego, 2010.
Title from first page of PDF file (viewed Feb. 22, 2010). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 421-450).

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Jiyapanichkul, Prasit, and jiyapanichkul@yahoo com. "Resource management in broadband multimedia networks." Swinburne University of Technology. Laboratory for Telecommunication Research, 1999. http://adt.lib.swin.edu.au./public/adt-VSWT20050610.100950.

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This research deals with optimal resource management in an overloaded broadband multimedia network. Optimisation is with respect to user satisfaction, where user satisfaction reflects both the quality of service experienced by connected users and the dissatisfaction of users blocked from access to the network. The research focuses on Asynchronous Transfer Mode (ATM) networks and the Internet, because these are the dominant emerging broadband networks which present some fundamental unsolved problems, related to the sharing of resources between mixed traffic types. ATM networks use conservative admission control, which protects network resources and ensures a high level of service for those admitted to the network, but results in low network efficiency because of low utilisation of resources due to blocking of many potential users. The Internet does not use admission control, with the result that performance degrades progressively as load increases. This causes frustration among users, and lowers the network efficiency due to high levels of congestion. We propose an optimisation model for each network (ATM networks and the Internet)which is intended to represent the distribution and consumption of key network resources by different traffic types. The model is aimed at maximising performance such that users admitted to the network are offered no less than some minimum acceptable level of quality of service (QoS). The solution is a set of traffic flow rates on each path which results in maximising an objective function value (revenue based on network operator interest or throughput based on customer interest) for a given network configuration with given user demand. As an example using the ATM network model, we illustrate the application of the model to an ATM network carrying both connection oriented and connectionless traffic. We explore the optimal response to a link failure which in turn causes node overload. As an example using the Internet model, we consider an overloaded network with link bottlenecks and an overloaded Web server, and explore the effect of transferring some server capacity to a mirror site and a proxy server. For real-time traffic control, the optimisation model is used to assign quotas for bandwidth or connections to selected paths. A control algorithm is implemented to provide maximum performance by admitting requests within the quotas which are obtained from the optimisation model. In an ATM network simulation, the algorithm is used to manage the virtual path (VP) pool in a network which suffers a link failure. A comparison is made between fixed virtual path management (FVPM) and dynamic virtual path management (DVPM), comparing the revenue achieved by each. This illustrates how DVPM adapts the VP pool in a robust fashion to achieve maximum revenue in the face of a link failure. However, the transient response suggests that benefit could be obtained using non-steady-state solutions. The model is extended by taking network state and traffic parameters into account to control changes in the VP pool to recognise limits to the rate at which traffic can be moved (through the natural birth-death processes). This scheme is called state dependent virtual path management (SDVPM). Performance evaluation of the new model shows that SDVPM achieves higher revenue than DVPM when the network suffers a link failure that requires a major change to the VP pool. In an Internet simulation, two algorithms are compared for control of access to a proxy server and a set of primary servers. An algorithm based on optimal flow solutions provides substantially better network performance than a localised heuristic algorithm. In each simulation case (ATM and Internet examples), the performance using a control system based on the steady state optimum flow model is close to the ideal optimal result.

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Jayalath, A. D. S. (Angiyaddage Dhammika Srilal) 1967. "OFDM for wireless broadband communications (peak power reduction, spectrum and coding)." Monash University, School of Computer Science and Software Engineering, 2002. http://arrow.monash.edu.au/hdl/1959.1/7995.

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Jayalath, A. D. S(Angiyaddage Dhammika Srilal) 1967. "OFDM for wireless broadband communications(peak power reduction, spectrum and coding) /." Monash University, School of Computer Science and Software Engineering, 2002. http://arrow.monash.edu.au/hdl/1959.1/7995.

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Joelsson, Maria. "Förändringskommunikation : Ett fiberbredbandsprojekt i Vara kommun." Thesis, Högskolan Väst, Institutionen för ekonomi och it, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-4448.

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I Vara kommun samverkar både stat, region, kommun och medborgare i ett projekt för att få fiberbredband på landsbygden. Ett stort förändringsprojekt som involverar många människor och som behöver kommuniceras på ett bra sätt för att skapa förståelse, motivation och engagemang. Syftet med den här uppsatsen har varit att beskriva förändringskommunikation och att kartlägga olika aktörer och kommunikationskanaler som kan vara involverade i en förändringsprocess. Dessutom har syftet varit att få ta del av upplevelsen av den kommunikation som har skett i det här förändringsprojektet i Vara kommun. Studiens fokus resulterade i en kvalitativ design och urvalet av respondenterna som svarade på upplevelsen av kommunikationen gjordes utifrån de föreningsrepresentanter som har varit aktiva i projektet. Dessutom har en kartläggning av bakgrund, aktörer och kommunikationskanaler skett via informanter som har varit aktuella. Författaren har själv varit engagerad i projektet. De kommunikationskanaler som aktörerna har använt sig av har varit elektroniska, skriftliga och muntliga. Engagemang, förväntningar och relationer är de 3 tema som den tematiska analysen resulterade i och har varit underlag för att beskriva upplevelsen av kommunikationen. Kommunikationen upplevs ha varit som en bergodalbana, där förtroendet har gått upp och ner. Det förutsätts att kommunikation fungerar men det är viktigt att ledningen redan på den strategiska nivån lyfter upp förändringskommunikationen.
Vara municipality interact at both national, regional, local government and citizens in a project to get fiber broadband in rural areas. A major change project involving many people and need to communication in a good way to create understanding, motivation and commitment. The purpose of this paper was to describe change communication and to identify the different actors and communication channels involved in a process of change. In addition, the aim has been to benefit from the experience of the communication that has occurred in this change project in Vara Municipality. Focus of the study resulted in a qualitative design and selection of respondents who responded to the experience of communication made by the representatives who have been active in the project. In addition, a survey of the background, actors and communication channels occurred via informants who have been relevant. The author herself has been involved in the project. The communication channels that participants have used have been electronic, written and oral. Commitment, expectations and relationships are the 3 theme that the thematic analysis resulted in, and has been a basis for describing the experience of communication. The communication is perceived to have been as a rollercoaster, where thrust has gone up and down. It assumed that communication works but it is important that management already on the strategic level work with change communication

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Yuan, Ping. "Gain, noise and bandwidth of avalanche photodiodes with thin multiplication regions /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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Schwartz, Jason L. "Achieving last-mile broadband access with passive optical networking technology." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02sep%5FSchwartz.pdf.

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Dissertations / Theses on the topic 'Broadband communication'

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