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 42 for “"receiver design"”.
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Algorithms and Architectures for UWB Receiver Design
… complexity challenges to traditional radio designs in terms of signal detection and synchronization. Additionally, the extremely wide bandwidth and shared nature of the medium means that UWB receivers must contend with a variety of interference sources. Traditional interference mitigation …
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Channel shortening equalizers for UWB receiver design simplification
… To exploit the temporal diversity, a UWB receiver usually incorporates Rake reception. Each multipath in the channel carries just a fraction of the signal energy. This phenomenon dictates a Rake receiver with a large number of fingers to achieve good energy capture and output signal to …
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Multiband RF/Microwave Front-end Receiver Design for Multi-Standard Applications
… amplifiers in a commonly used multi-standard receiver with parallel architecture increases. It leads to high power consumption and low feasibility for high integration design. Compared to the RF transmitter, the design of the RF receiver front end is considered to be more challenging due to …
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An airborne X-band synthetic aperture radar receiver design and implementation
This dissertation focuses on the design and implementation of an X-band receiver for use in the South African Synthetic Aperture Radar (SASAR II) project. The SAR will be used to demonstrate the capability of building a high resolution X-hand imaging radar in South Africa. The design starts by …
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Ultra-wideband Small Scale Channel Modeling and its Application to Receiver Design
… channels for communications and to system level design issues for UWB receivers. Measurement based UWB small scale modeling and characterization efforts as well as UWB communications system analysis and simulation are presented. Relevant background material related to UWB communications and …
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Area and Power Conscious Rake Receiver Design for Third Generation WCDMA Systems
A rake receiver, which resolves multipath signals corrupted by a fading channel, is the most complex and power consuming block of a modem chip. Therefore, it is essential to design a rake receiver be efficient in hardware and power. We investigated a design of a rake receiver for the WCDMA …
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A Multi-Constellation Multi-Frequency GNSS Software Receiver Design for Ionosphere Scintillation Studies
… a multi-constellation multi-band GNSS software receiver has been developed based on USRP2, a general purpose radio platform. The C++ class-based software receiver were developed to process the IF data for GPS L1, L2C, and L5 and GLONASS L1 and L2 signals collected by the USRP2 front end. The …
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CMOS Receiver Design for Optical Communications over the Data-Rate of 20 Gb/s
… 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 rate. …
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Low-Complexity Iterative Receiver Design for Multi-Carrier Faster-Than-Nyquist Signaling Over Frequency-Selective Fading Channel
… interference simultaneously, which makes the receiver design of MFTN signaling quite challenging. Especially in multipath fading channels, the coupling of channel interference and self-interference imposed by MFTN signaling further increases the complexity of symbol detection and channel …
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Characterisation of a dual frequency conversion superheterodyne receiver
… how it relates to the KAT project. Then certain receiver design techniques and parameters will be discussed together with receiver design trade-offs will be presented. This dissertation will then focus on the actual simulations of the 3x4 receiver module using the time-domain RF simulator, …
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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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A modulation-doped field-effect transistor-based optoelectronic integrated circuit receiver for optical interconnects
… lightwave communication system is the optical receiver/preamplifier which converts the low-level optical signals into amplified electrical signals. This thesis describes the design, fabrication, and characterization of an OEIC receiver based on submicron pseudomorphic modulation-doped …
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A software-defined receiver for laser communications using a GPU
… is the lack of accessible, low-complexity receiver electronics and software implementations. Graphics Processing Units (GPUs) can reduce the complexity in receiver design since GPUs require less specialized knowledge and can enable faster development times than Field Programmnable Cate …
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Experimental designs for efficient free-space multi-spatial-mode optical communication
… sent through free space between transmitter and receiver. This thesis aims to lay the groundwork for an experimental design to achieve efficient spatial-PPM free-space optical communication using 1550 nm light at the single photon level. We focus on presenting and evaluating a …
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Cognitive RF Front-end Control
… addresses the performance degradation in receivers due to poor selectivity. Poor selectivity is expected to be a primary limitation on the performance of Dynamic-Spectrum-Access (DSA) and millimeter wave (mmWave) technologies. Both DSA and mmWave are highly desired technologies because …
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Evaluation of GNU Radio Platform Enhanced for Hardware Accelerated Radio Design
… radio technology has enabled radio developers to design and implement radios with great ease and flexibility. Software radios are effective in experimentation and development of radio designs. However, they have limitations when it comes to high-speed, high-throughput designs. This limitation can …
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Cyclostationarity Feature-Based Detection and Classification
… that has promising applications to intelligent receiver design. Cyclostationarity FB classification and detection algorithms have been applied to a breadth of wireless communication signals — analog and digital alike. This thesis reports on an investigation of existing methods of extracting …
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X-band digitization systems aspects and filters for MeerKAT radio astronomy receiver
… in the Southern hemisphere. MeerKAT is being designed to observe radio signals produced by celestial sources at UHF-, L-, S- and X-band frequencies. With the development of the X-band receivers for MeerKAT scheduled to start in the near future, research is required to determine an optimum …
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