Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 50 for “"broadband wireless"”.
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Fixed Broadband Wireless Access Systems at Millimeter Wave Frequency
… radio. The millimeter wave band is suited for broadband services because of the large available bandwidth, high frequency reuse and the reduced size of radiating and receiving antennas and electronic components.<br/><br/>For the development of a wireless system operating at millimeter wave …
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Algorithms for channel impairment mitigation in broadband wireless communications
Broadband wireless communications has been well recognized as one of the most potential strategies to integrate various high-data-rate and quality communication applications such as high-speed wireless internet, broadcasting and mobile communication services under a common system infrastructure. To …
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Timing and frequency synchronization in OFDM broadband wireless systems
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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Service oriented networking for multimedia applications in broadband wireless networks
Extensive efforts have been focused on deploying broadband wireless networks. Providing mobile users with high speed network connectivity will let them run various multimedia applications on their wireless devices. In order to successfully deploy and operate broadband wireless networks, it is …
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Network selection and optimisation of 4G heterogeneous multi-hop broadband wireless networks
Wireless Heterogeneous Networking (HetNet) offers the potential to be one of the most promising approaches to meeting escalating network capacity demands cost-effectively. The main challenge facing the deployment of HetNets is provisioning backhaul connectivity for small cells and the selection is …
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A Framework for policy-based Quality of Service for fixed broadband wireless networks
… policy-based quality of service (QoS) for fixed broadband wireless systems. An implementation of the proposed architecture for the Local Multipoint Distribution Service (LMDS) wireless network in Blacksburg, Virginia is described in detail. The focus of the research work was to enable simpler …
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Joint compensation of I/Q impairments and PA nonlinearity in mobile broadband wireless transmitters
… and power amplifier (PA) nonlinearity in wireless transmitters using accurate, low complexity digital predistortion (DPD) technique. After analysing the distortion created by I/Q modulators and PAs together with nonlinear crosstalk effects in multi-branch multiple input multiple output …
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Characterization and Evaluation of Non-Line-of-Sight Paths for Fixed Broadband Wireless Communications
Channel impulse responses collected on the Virginia Tech campus show combinations of specular multipath and diffuse scattering at LMDS frequencies. An algorithm is presented that estimates link performance based on the channel impulse response. Presented and analyzed are representative impulse …
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A Comparison Between Synchronous CDMA and Orthogonal Frequency Division Multiplexing (OFDM) for Fixed Broadband Wireless Access
The growth of broadband Internet access has paved the way for the development of many new technologies. As the cost of implementing broadband access soars, the best alternative will be to use fixed wireless for these services. This thesis addresses the possibility of 3rd Generation (3G) mobile …
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An assessment of new broadband wireless technologies and their impact on adoption strategies for the dominant providers
Thesis (S.M.)--Massachusetts Institute of Technology, System Design & Management Program, 2003.
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A Coverage Area Estimation Model for Interference-Limited Non-Line-of-Sight Point-to-Multipoint Fixed Broadband Wireless Communication Systems
First-generation, line-of-sight (LOS) fixed broadband wireless access techniques have been around for several years. However, services based on this technology have been limited in scope to service areas where transceivers can communicate with their base stations, unimpeded by trees, buildings and …
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The Middle Class Tax Relief And Job Creation Act Of 2012 And Its Impact On Television Broadcasting And Future Broadband Wireless Communications
… electromagnetic spectrum for utilization by wireless communications providers. This "new" wireless spectrum will allow wireless providers to increase their wireless broadband capabilities and feed the ever-growing demand by consumers for more wireless broadband capacity. This thesis addresses …
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Location based authenticated multi-services group key management for cyber security in high speed broadband wireless multicast communications. Multi-service group key management scheme with location based handover authentication for multi-handoffs participating in multi-group service subscriptions, its performance evaluation and security correctness in high speed broadband wireless multicast communications
… is on the increase due to the convergence of wireless and mobile access technologies in all businesses. Accordingly, with the proliferation of diverse multicast group service subscriptions that are possible to co-exist within a single broadband network, there is also huge demand by the mobile …
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The optimization of multiple antenna broadband wireless communications. A study of propagation, space-time coding and spatial envelope correlation in Multiple Input, Multiple Output radio systems
… and space time block coding for future mobile wireless communications. The initial system analysis employs a space-time coded OFDM transmitter over a multipath Rayleigh channel, and a receiver which uses a selection combining diversity technique. The performance of this combined scenario is …
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Assessing the opportunities and risks of different short-range wireless strategies for an automotive manufacturer
Recent innovations in wireless technology enable devices that were once stand-alone to be "connected". Today, connected products are changing the way people access information, communicate with others and live their lives. In the automotive industry, the notion of a connected automobile is now …
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Wideband Channel Characterization for MIMO Scenario
Because broadband wireless systems benefit from accurate channel characterization, there is growing interest in broadband wireless multiple-input multiple-output (MIMO) channel models. This thesis verifies the suitability of the Saleh Valenzuela with Angle (SVA) model for wideband MIMO …
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Ofdm system cyclic prefix characteristic analaysis for wimax technology
In the modern world, Wireless Communication System are involved in every part of life. Worldwide Interoperability for Microwave Access (WIMAX) system based on Orthogonal Frequency Division Multiplexing (OFDM) with different adaptive modulation techniques is currently the topic of discussion.WIMAX …
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Wideband Terrestrial Path Loss Measurement Results For Characterization of Pico-cell Radio Links at 38 GHz and 60 GHz Bands of Frequencies
… applications has necessitated deployment of broadband network access technologies. Research analysts project that the U.S. market for broadband wireless networking will grow to nearly $2 billion by 2004 and Local Multipoint Distribution Services (LMDS) have enormous potential to emerge as the …
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