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 11 of 11 for “"Time Division Multiplexing (TDM)"”.
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Optimizing resource allocation in next-generation optical access networks
… three next-generation access networks: Time Division Multiplexing (TDM) PONs, Wavelength Division Multiplexing (WDM) PONs, and WDM Radio-Over-Fiber (RoF) Picocellular networks. To address resource allocation problems in these three networks, this thesis first investigates respective …
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ΑΝΑΛΥΣΗ ΚΑΙ ΣΧΕΔΙΑΣΗ ΤΟΥ ΜΗΧΑΝΙΣΜΟΥ ΠΡΟΣΠΕΛΑΣΗΣ ΓΙΑ ΕΝΑ ΟΠΤΙΚΟ ΔΙΚΤΥΟ ΠΟΛΛΑΠΛΩΝΥΠΗΡΕΣΙΩΝ ΣΤΑ 144 ΜΒ/S
… CONJUNCTION WITH A CONSIDERABLE AMOUNT OF REAL-TIME AND INTERACTIVE DATA TRAFFIC REQUIRES DIFFERENT HANDLING OF STREAM AND BURSTY-TYPE COMMUNICATIONS. THIS TASK IS ACCOMPLISHED THROUGH THE USE OF A DISTRIBUTED HYBRID SWITCHING PROTOCOL WHICH EMPLOYS AN ASYNCHRONOUS DYNAMIC TIME DIVISION …
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Optical Temperature Monitoring of Electrical Power Transformer Networks
… accuracy that can be achieved is about 0.010C. Time Division Multiplexing (TDM) is employed to identify individual transformers in the network at the central station. A Model to find an optimal node to place the optical sources is also presented. The temperature monitoring of standard IEEE …
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Resonant cavity Fibre Bragg grating sensor interrogation
… presents a novel high-performance approach to time-division-multiplexing (TDM) fibre Bragg grating (FBG) optical sensors, known as the resonant cavity architecture. A background theory of FBG optical sensing includes several techniques for multiplexing sensors. The limitations of current …
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Performance analysis of star architecture packet-switched VSAT network using roll-call polling multiple access scheme
… that carries out its communications task on a Time Division Multiplexing (TDM) satellite channel. This research consists of three major parts. First, the performance analysis of the single-hop star architecture network is carried out. This includes the study of a polling communication system …
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Analysis and practical considerations in implementing multiple transmitters and receivers for wireless power transfer via coupled magnetic resonance
… The second part of this study introduces a time division multiplexing (TDM) technique for tightly coupled receivers via the same method of coupled magnetic resonance. Two or more receivers can be powered simultaneously using a single transmit coil. In a tightly coupled receiver scenario, the …
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Performance analysis of star architecture packet-switched VSAT networks using random code division multiple access
… major thrusts. First, we analyzed the average time delay of the broadcast Time Division Multiplexing (TDM) outbound channel (hub to VSAT). Second, a throughput performance analysis of an asynchronous Direct-Sequence Code Division Multiple Access (DS-CDMA) communication system is carried out for …
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Electrical Impedance Tomography/Spectroscopy (EITS): a Code Division Multiplexed (CDM) approach
… and successfully confirmed the use of Code Division Multiplexing (CDM) using Gold codes in Electrical Impedance Tomography and Spectroscopy. The results obtained showed 3.5% and 6.2% errors in determining the position and size of imaged anomalies respectively, with attainable imaging speed …
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Applications of perfect difference codes in fiber-optics and wireless optical code-division multiplexing/multiple-access systems
… itself in the radio domain, Spread spectrum code-division multiplexing/multiple-access (CDMA) has seen a recent upsurge in optical domain as well. Due to its fairness, flexibility, service differentiation and increased inherent security, CDMA is proved to be more suitable for the bursty nature of …
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Highly Accurate Ultrasonic Positioning and Tracking Systems
… which accurate estimations of distance, through time-of-flight (TOF) techniques, are fundamental. Generally, cross-correlation, which produces a peak at the time delay between a transmitted and received signal, is considered the optimal TOF estimation technique. Since their accuracy depends on …
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Současný obousměrný přenos dat a napájecího signálu jedním optickým vláknem
… polarizačního (PDM), vlnového (WDM) a časového (TDM) multiplexu. V teoretické části této práce jsou blíže popsány a specifikovány optická vlákna, zdroje a detektory optického záření a pasivní optické komponenty vhodné pro realizaci zadaných přenosových systémů. Dále jsou popsány principy …