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 32 for “"receiver architecture"”.
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Multi-channel ultra-low-power receiver architecture for body area networks
… attempt a reduction in system power. Narrowband receivers in-particular can enjoy significant power reduction by employing high-Q bulk acoustic resonators as channel select filters directly at RF, allowing down-stream analog processing to be simplified, resulting in better energy efficiency. But …
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A low-complexity linear and iterative receiver architecture for multi-antenna communication systems
… is on the design of low-complexity multi-antenna receiver architectures for communication networks and their demonstration in a real-time wireless environment. Our practical realization of an orthogonal frequency-division multi-antenna receiver is capable of several forms of linear and iterative …
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Optimizing communication performance of low-resolution ADC systems with hybrid beamforming
… have drawn extensive attention as a promising receiver architecture for millimeter wave (mmWave) communications by reducing hardware cost and power consumption. In this dissertation, hybrid beamforming systems that employ low-resolution ADCs are considered to achieve a better trade-off between …
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Six-port wireless receiver architectures
… 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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Novel Approaches to Overloaded Array Processing
… such environments, OLAP becomes possible when a receiver exploits additional signal properties such as the finite-alphabet property and signal excess-bandwidth. This thesis proposes three approaches to signal extraction in overloaded environments, each providing a different tradeoff in …
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A subsampling delta-sigma modulator for global navigation satellite systems
… Global Navigation Satellite Systems (GNSS) receivers should be capable of processing multi-frequency signals in order to provide better positioning accuracy and signal availability to end-user. Nevertheless, the realization of such receivers with conventional receiver architectures leads to …
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A reconfigurable analog-to-digital converter for a mobile receiver
… converters (ADCs) of mobile terminal receivers, this indicates higher sample rate, lower power consumption and higher resolution. With comparison to other ADCs, the pipelined ADC architecture has most successfiilly covered the wide resolution limits and data rate requirements of these …
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On the waveform fidelity of broadband digital storage architectures
… analogue methods. Given such a digital receiver technology, the system designer has at his disposal complete, real-time, receiver and processor reconfigurability. In this thesis, a number of architectures for the digital capture, storage and reconstruction of broadband signals are …
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Energy-efficient wireline transceivers
… several fundamental trade-offs in conventional receivers; (2) a 4-10.5Gb/s continuous-rate CDR with novel frequency acquisition scheme based on bang-bang phase detector (BBPD) and a ring oscillator-based fractional-N PLL as the low noise wide range DCO in the CDR loop; (3) a source-synchronous …
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The design and implementation of a wideband digital radio receiver
… functionality, as well as reduced cost. Wideband receivers place the heaviest demands on both mixed signal and digital signal processing technology, requiring high spurious free dynamic range (SFDR) and signal processing bandwidths. This dissertation investigates the extent to which current …
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Dynamic pixel selection in free-space photon-counting optical communication systems for the exploitation of excess channel capacity
… form of a diffraction-limited spot at the receiver end of a free-space optical receiver. Adaptive optics, a traditional solution to this problem, is computationally expensive and adds complexity to receiver architecture by requiring tools like wavefront sensors and deformable mirrors. Due …
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A super-nyquist architecture for rateless underwater acoustic communication
… are commonplace. In this thesis, we develop an architecture for reliably communicating over the underwater acoustic channel. A notable feature of this architecture is its rateless property: the receiver simply collects pieces of transmission until successful decoding is possible. With this, we …
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Spectrum monitor for cognitive radio
The concept of a cognitive radio assumes that the receiver is able to determine the activity level across a large range of spectrum in order to assign a channel for its use. Hence a key function is a spectrum monitor to detect the spectrum availability as a first step. This thesis explores the …
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Design and Implementation of a Constant Envelope OFDM Waveform in a Software-Defined Radio Platform
… description of CE-OFDM and its suboptimal receiver architecture is provided in order to define and analyze the key parameters of the waveform and their performance impacts. The primary contribution of this thesis is a highly tunable software-defined radio (SDR) implementation of the …
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Digital CMOS Design for Ultra Wideband Communication Systems: from Circuit-Level Low Noise Amplifier Implementation to a System-Level Architecture
… would also significantly 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 …
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Advanced MIMO-CDMA receiver for interference suppression: Algorithms, system-on-chip architectures and design methodology
… for much higher rate packet services. The receiver architecture is essential for the mobile devices to support high speed multimedia service. The design challenges come from both detection algorithms and hardware architectures. Much more complicated algorithms are required to suppress …
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Power Line Communications in Microprocessors - System Level Study and Circuit Design
… in this thesis is the design of low power receiver for microprocessor level PLC, also called data recovery block. The proposed design of data recovery block employs Correlation Detection (CD) receiver architecture. The design has been implemented in IBM 0.13 µm CMOS process and has been …
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Resource allocation and secure communication design in simultaneous wireless information and power transfer systems
… the multi-antenna relay. A power splitting (PS) receiver architecture is utilized at each destination node to implement energy harvesting (EH) and information decoding (ID) simultaneously. The aim of this chapter is to minimize the relay transmit power by jointly designing relay beamforming …
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Time-Modulated Array Testbed Prototype for Multibeam Spectrometry
… elements, systems development of the heterodyne receiver architecture, and development of firmware and software for receiving and analyzing RF signals. The TMA antennas and radios are designed to operate at about 2.3 GHz. This targets passive radar using XM Radio as the transmitter of …
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Ultra-wideband Spread Spectrum Communications using Software Defined Radio and Surface Acoustic Wave Correlators
… Commission (FCC) frequencies, simple transceiver architecture, and high performance in noisy environments. Spread spectrum techniques offer additional improvements beyond the conventional pulse-based UWB communications. This dissertation implements a multiple-access UWB communication system using …
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