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 16 of 16 for “"Digital Receiver"”.
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High resolution readout of vibrating island accelerometer using digital receiver
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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Theory, design and implementation of a digital receiver for the Advanced Communications Technology Satellite (ACTS) beacons
… the theory, design and implementation of a digital receiver designed for the ACTS propagation experiments. The Virginia Tech Satellite Communications Group is designing, constructing and distributing eight ACTS propagation terminals (APTs) under a contract with NASA. The terminals will …
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Six-port wireless receiver architectures
… work describes novel six-port direct conversion digital receiver architecture.<br/><br/>A general review of six -port reflectometer theory and architectures is presented. Three six-port architectures suitable for MMIC realization are discussed. <br/><br/>A new broadband six-port direct conversion …
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The design and implementation of a wideband digital radio receiver
… circuitry. Improvements in mixed signal and digital signal processing technology are rapidly leading towards a largely digital approach, with down-conversion and filtering moving to the digital signal processing domain. Advantages of this technology include increased performance and …
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Ambient ZeroScatter: Ambient BPSK and QPSK Backscatter Communication using Existing Digital I/O Pins
… We demonstrate that completely unmodied digital I/O pins on MCUs and FPGAs can be re-purposed as binary phase-shift keying (BPSK) backscatter modulators in the UHF and microwave bands with zero added components, and that multiple digital I/O pins can be used in combination with series or …
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Transceiver Design for Ultra-Wideband Communications
… paying particular attention to transmitter and receiver design. This thesis is specifically focused on a software radio transceiver design for impulse-based UWB with the ability to transmit a raw data rate of 100 Mbps yet encompasses the adaptability of a reconfigurable digital receiver. A 500 …
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Symbol Timing and Coarse Classification of Phase Modulated Signals on a Standalone SDR Platform
… synchronization, and demodulation of digital phase modulated signals (QAM and MPSK signal types) and also analog signals. The Digital Receiver Module (DRM) is implemented on the FPGA and takes care of all the digital down conversions, mixing, decimation, and low pass filtering. The …
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On the waveform fidelity of broadband digital storage architectures
Recent advances in digital technology resulted in the advent of high-density, very large-scale and very high-speed integrated circuit devices. For the first time it has become viable to store and/or process digitally sufficient lengths of very broadband signals. The digital capturing, storage and …
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An implementation of an AMPS digital base station with adaptive Automatic Gain Control
We consider the problem of designing a wide-band digital receiver for an Advanced Mobile Phone Service (AMPS) cellular system, and the associated problem of choosing an appropriate Analog-to-Digital (ADC) converter. The probability density function of the voltage across a cellular receiving antenna …
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An optical data receiver for integrated photonic interconnects
… This work presents a novel optical data receiver for integrated optical links. Both the optical receiver and the photodiode are monolithically-integrated in the same CMOS substrate. The highly-digital receiver senses the photodiode current using a regenerative cross-coupled latch. The …
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Data acquisition and control system for the OLYMPUS propagation experiments
… signal strength is measured via a hybrid analog/digital receiver. The analog portion the receiver utilizes the coherency of the satellite beacons to track 20 and 30 GHz signals to the noise floor. The digital portion of the receiver is contained within the DACS and consists of a stand-alone …
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Channel modeling and interference rejection for CDMA automatic vehicle monitoring systems
It is desirable to develop a universal digital receiver which is capable of operating with many different wireless communication systems. Time Dependent Adaptive Filter (TDAF) Processing represents an effective approach for CDMA interference rejection. This technique is especially appropriate at …
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Electron Temperature Enhancement Effects on Plasma Irregularities Associated with Charged Dust in the Earth's Mesosphere
… can be drawn. The new designed Echotek digital receiver is ready for use now. It will be much superior to the experimental setup used for measurements in the previous campaign.Therefore, future experimental campaigns are planning next year to support the theoretical research.
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Digital CMOS Design for Ultra Wideband Communication Systems: from Circuit-Level Low Noise Amplifier Implementation to a System-Level Architecture
… benefit from a radio architecture that enables digital communications. In addition to the normal challenges of CMOS RFIC design, there are two major technical challenges for the implementation of CMOS digital UWB radios. The first is building RF and analog circuitry covering wide bandwidth over …
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Adquisición de imágenes de resonancia magnética nuclear mediante técnicas de submuestreo
… las ventajas potenciales del procesamiento digital, pero tratando a la vez de reducir las exigencias sobre los diferentes componentes electrónicos a utilizar. El objetivo final es lograr un sistema de reconstrucción de imágenes más versátil y de mejor calidad que los comúnmente utilizados en …