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 446 for “"Data Rate"”.
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Data Rate Enhancement in Ultrasonic Data Telemetry Links
… a novel technique for the enhancement of data rate in wireless data transfer through ultrasonic telemetry links. Referred to as INtervened-Timing, Enhanced-Rate Interval Modulation (INTERIM), the proposed technique is an isochronous pulse-based modulation technique, which embeds the …
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High data rate acoustic communications with nonideal channels
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01
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Space-Time Codes for High Data Rate Wireless Communications
Space-time codes (STC) are a class of signaling techniques, offering coding and diversity gains along with improved spectral efficiency. These codes exploit both the spatial and the temporal diversity of the wireless link by combining the design of the error correction code, modulation scheme and …
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Energy-efficient adaptive data rate optimisation scheme for LoRaWAN
… frequency band, scalability, low bit rate, and energy efficiency. LoRaWAN networks consist of low-power end devices connected in a star-of-star topology to a network server (NS) through a gateway (GW), enabling seamless exchange of data connected through an IP-based back-haul …
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Power Line Communication for Low-Data-Rate Energy Control
… novel or tailoring existing communication strategies to the requirements of the demand-leveling control of TCLs. Accordingly, this thesis takes a holistic approach to develop a low-cost, wide-coverage, and reliable communication infrastructure tailored to the nuances of the demand-leveling …
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Feasibility of a dynamic data rate satellite link for Inmarsat
… (GCCS). Inmarsat, however, has a very limited data rate. For ships fitted with the latest modem upgrade, Inmarsat provides a meager 128 kbps for support of its numerous functions. To improve upon Inmarsat's limited data rate, this thesis suggests a potential improvement to Inmarsat …
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Analysis Of Time Synchronization Errors In High Data Rate Ultrawideban
… systems hold the promise of delivering wireless data at high speeds, exceeding hundreds of megabits per second over typical distances of 10 meters or less. The purpose of this Thesis is to estimate the timing accuracies required with such systems in order to achieve Bit Error Rates (BER) of the …
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Characterizing Dynamic Power and Data Rate Policies for WirelessUSB Networks
… adjusting transmission power level and data rate encoding. WirelessUSB is a low-power, low-latency wireless technology developed by Cypress Semiconductor Corporation for human interface devices such as keyboards and mice. WirelessUSB devices conserve power by employing power-efficient …
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Delta-Sigma digital-RF modulation for high data rate transmitters
… transmitter IC built in 0.13 pm CMOS demonstrates a data rate of 1.2 Gb/s using OFDM modulation in a bandwidth of 200 MHz centered at 5.25 GHz. The modulator consumes 187 mW and occupies a die area of 0.72 mm2. A quadrature digital-IF approach eliminates modulator LO feedthrough and image …
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High Data Rate Coherent Optical OFDM System for Long-Haul Transmission
… the increase in demand for bandwidth and high data rates. Optical Orthogonal Frequency Division Multiplexing is considered as a promising technology to satisfy the increased demand for bandwidth in broadband services. Optical OFDM received a great attention after proposing it as a modulation …
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On the theory of estimation and control with finite data-rate
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-08-01
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A Proposed Architecture for a High-Data Rate Mobile Lmds Network
… thesis proposes a system architecture for a high-data rate mobile Local Multipoint Distribution Service (LMDS) Network. Its goal is to provide a workable "strawman" design that can serve as a basis for further research. The architecture is designed to offer broadband services to train commuters …
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A micro-coded controller for a medium data rate satellite payload simulator
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Null power reallocation for data rate improvement in a wireless multicarrier system
Multicarrier systems are advantageous for high data rate transmissions in wireless environments due to their ease of implementation and tolerance for multipath delay spread. Currently, these systems as specified by the IEEE 802.11 standards do not adapt to frequency-selective fading but simply …
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Effects of user and spatial diversity on high data rate wireless systems
A novel design paradigm for wireless data delivery involves use of a scheduler at a base station to schedule users awaiting transmission and send downlink data to these users with all available cell power. This is unlike previous systems that share the available downlink power between users and …
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Design of Miniature Low-Cost Antennas for Compact Low-Data-Rate IoT Terminals
… where ubiquitous IoT devices gather and exchange data for monitoring, tracking, and control purposes. It is already being deployed across diverse sectors, such as logistics, agriculture, and healthcare. At its core, IoT enables wireless devices to autonomously communicate over the Internet. …
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An implementation of a 5.25 GHz transceiver for high data rate wireless applications
The desire for transmission of high data rate information across wireless channels has grown immensely over the past decade. Wireless devices available today including mobile phones, wireless local area networks (WLANs) and Bluetooth radios have realized a wide variety of applications at data rates …
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Multiple-input multiple-output visible light communication receivers for high data-rate mobile applications
… of optical wireless communication that transmits data by modulating light in the visible spectrum. To meet the growing demand for wireless communication capacity from mobile devices, we investigate multiple-input multiple-output (MIMO) VLC to achieve multiplexing capacity gains and to allow …
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CMOS Receiver Design for Optical Communications over the Data-Rate of 20 Gb/s
Circuits to extend operation data-rate of a optical receiver is investigated in the dissertation. A new input-stage topology for a transimpedance amplifier (TIA) is designed to achieve 50% higher data-rate is presented, and a new architecture for clock recovery is proposed for 50% higher clock …
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