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.
Results
Showing 1 to 20 of 409 for “"Multipath"”.
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Multipath aided rapid acquisition
… a rapid acquisition procedure that exploits the multipath to aid the synchronization. In particular, we consider a class of serial search strategies and determine the optimal search procedure for the uncertainty space consisting of N[sub]s total cells and N[sub]Q correct cells. We derive …
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Multipath transport for virtual private networks
… communication tunnels over public Internet. Multipath TCP (MPTCP) extends TCP to allow data to be delivered over multiple network paths simultaneously. This thesis first builds a testbed and investigates the potential of using MPTCP tunnels to increase the goodput of VPN communications and …
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Communication through noisy, random-multipath channels
Thesis (Sc.D.) Massachusetts Institute of Technology. Dept. of Electrical Engineering, 1956.
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Microwave multipath resolution in microcellular channels
… arrival and resolve the overall paths that these multipaths had to take to reach the receiver. This information will be used to compare with propagation prediction simulations using the modeled environment, and therefore, provide new insight into the nature of reflection and scattering of radio …
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Through-the-Wall Imaging and Multipath Exploitation
… our results, we exploit information in the multipath of the objects surrounding both the target and the sensors. First, we estimate building layouts by using the jump-diffusion algorithm and employing prior knowledge about typical building layouts. We also take advantage of a detailed …
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Transmission of data under multipath transmission conditions
… to achieve, primarily due to fading caused by multipath interference. In this thesis a data communication system is described for use over radio channels impaired by multipath interference. The thesis first describes radio communication in general, and multipath interference In particular. The …
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Equalization Techniques For Multipath Mitigation in Aeronautical Telemetry
… In the presence of frequency selective multipath interference typically encountered in aeronautical telemetry, both equalization techniques are shown to provide reliable performance for FQPSK and SOQPSK-TG. The performance of both waveforms with the DF-MMSE equalizer is slightly better …
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Performance analysis of CDMA systems in multipath channels
… Two benefits of CDMA include resistance to multipath fading and graceful performance degradation in the presence of multiple access interference. These benefits have made CDMA especially attractive for cellular telephone systems and other wireless networks. This thesis project is divided …
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Improving Network Performance Through Endpoint Diagnosis And Multipath Communications
… part of this thesis explores the efficacy of multipath communication in such situations. It is expected that multi-path communications have monetary implications for the ISP's and content providers. Our solution, therefore, aims to minimize such costs to the content providers while …
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Joint Positioning and Multipath Radio Channel Estimation and Prediction
… the narrowband radio channel are described with multipath components, where amplitude and angle of arrival are associated with each component. Since it is believed that the performance of the solution is greatly affected by imperfections in the receiver, its frequency error is also included in …
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Characterization of the Multipath Environment of Ionospheric Scintillation Receivers
… amplitude and phase. These errors are known as multipath errors and can lead to cycle slip and loss of lock on the satellite or degradation in the accuracy of position determination. High elevation cut off angles used for filtering GNSS signals, usually 15-30°, can reduce non-ionospheric …
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Multipath arrival tracking for marine vehicles utilizing pattern recognition
… advantage of the patterns associated with these multipath arrivals. Through the use of pattern recognition, a multipath arrival tracking algorithm was developed to utilize the unique characteristics associated with each individual ray path for long range tracking purposes. This tracking algorithm …
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Performance of a wideband CDMA system under multipath fading
… is more difficult to analyze, is the effect of multipath fading, which is caused by reflections of the transmitted signal through the propagating medium to the receiver.
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Multipath "Fresnel Zone" Routing for Wireless Ad Hoc Networks
… for wireless ad hoc networks has shown that multipath routing can enhance data delivery reliability and provide load balancing. Nevertheless, only a few multipath routing algorithms have been proposed and their interaction with transport layer protocols has not been thoroughly addressed in …
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Load distribution and energy awareness in manets using multipath routing
… single paths to the desired destinations, while multipath routing obtains multiple paths for only marginal additional overhead. This work argues that multipath routing is advantageous, even allowing for the additional overheads, because of the improved network load distribution. The merits of …
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