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 115 for “"Baseband"”.
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Ultra-wideband digital baseband
… over short distances. In this thesis two digital baseband receivers for impulse UWB have been designed. The first one was designed for baseband UWB pulses and achieves 193 kbps of wireless communication using impulses of 300 MHz bandwidth and 2% duty cycle, and was part of a system-on-a-chip. The …
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Decentralized Baseband Processing for Massive MU-MIMO Systems
… or thousands of antennas and generates raw baseband data rates that exceed the limits of current interconnect technology and chip I/O interfaces. This thesis proposes novel decentralized baseband processing architectures that alleviate these bottlenecks by partitioning the BS antenna array …
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Efficient baseband design and implementation for high-throughput transmitters
… chipsets with lower power budgets. Digital basebands with increased energy-efficiency are needed while fitting within tight area constraints. High spectral efficiency demands modulation schemes with high peak to average power ratio, increasing the precision requirements on the digital …
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Near-field baseband communication system for use in biomedical implants
… thesis introduces the reader to the near-field baseband pulse radio communication for biomedical implants. It details the design and implementation of the complete communication system with a particular emphasis on the antenna structure and waveform coding that is compatible with this particular …
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Coding for the Control of Intersymbol Interference in Baseband Channels
Made available in DSpace on 2014-12-12T20:54:53Z (GMT). No. of bitstreams: 1 7913430.pdf: 3958903 bytes, checksum: 42a429b8e06f742d193d3ad25d669840 (MD5) Previous issue date: 1978
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An adaptive Orthogonaly Division Multiplexing baseband modem for wideband wireless communication
… for a wideband indoor wireless channel. The baseband modem is implemented on a Field Programmable Gate Array and uses 294,939 2-input NAND gates with a clock frequency of 128 MHz. The Frequency Adaptive Modulation algorithm is 6% of the entire baseband modem which means that it is of low …
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Digital predistortion of RF amplifiers using baseband injection for mobile broadband communications
Radio frequency (RF) power amplifiers (PAs) represent the most challenging design parts of wireless transmitters. In order to be more energy efficient, PAs should operate in nonlinear region where they produce distortion that significantly degrades the quality of signal at transmitter’s output. …
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Digital assistance design for analog systems : digital baseband for outphasing power amplifiers
… of digital assistances through the digital baseband design for outphasing power amplifiers. In the digital baseband design, this thesis conveys two major points: the importance of the use of the reduced-complexity system modeling techniques, and the communications between hardware design and …
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An energy efficient sub-threshold baseband processor architecture for pulsed ultra-wideband communications
… work is to describe how operating the digital baseband processor in the sub-threshold region and increasing the degree of parallelism can translate into energy savings across the entire UWB receiver. While sub-threshold operation is traditionally used for low energy, low performance …
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New d-piso architecture for dynamic symbol size digital baseband modulation implementation in FPGA
… study of fixed and dynamic symbol size digital baseband modulation for optical communication system in FPGA hardware design. KCU105 FPGA development board and Vivado software were chosen as the main platform to implement the design. A new architecture to implement dynamic symbol size baseband …
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Design and prototype of an all digital system for baseband FM multiplex signal demodulation
… is in the modulation and demodulation of baseband frequency modulated (FM) radio signals. In this project, an all digital system for demodulating baseband FM Multiplex (MPX) signals is simulated, designed, and prototyped on a Xilinx Spartan-3AN FPGA. The design architecture is simulated …
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Probing the Diversity of Fast Radio Bursts with CHIME/FRB
… 1 dataset updated with channelized raw voltage (“baseband”) data (“BaseCat1”), for which I played a pivotal role. The CHIME/FRB baseband localization pipeline can localize FRBs to arcminute-precision as long as the signal is bright enough to trigger the saving of offline baseband data. I then …
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Design and verification of SC-FDE/OFDM communication schemes for millimetre-wave wireless system using FPGA technologies
… to prototype the hardware implementation of the baseband digital signal processing modules of the proposed 64.8 GHz millimetre-wave transceiver. The design and the construction of the complete baseband transceiver is based on a software-defined radio (SDR) concept, which was achieved by a …
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A Neural Network Receiver for EM-MWD Communication
<p>Baseband digital communication in electro-magnetic measurement while drilling (EM-MWD) systems is often corrupted by non-white surface noise. The inability to reliably decode the transmitted signals in a noisy environment limits the depth at which EM-MWD systems can operate. Correlation …
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Digital frequency demodulation for a laser vibrometer
… or electronically frequency shifted from baseband to an intermediate frequency. This shifting produces a narrow band modulation that may be demodulated with standard analog frequency demodulators. This thesis proposes replacing these traditional optics or electronic circuits with a digital …
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Wideband RF Front End Daughterboard Based on the Motorola RFIC
… we receive to low intermediate-frequency (IF) or baseband (centered on zero Hz) signals in order for ADCs to sample them and feed them into microchips for processing. The reverse is true when we transmit. Amplification is also needed on the receive side to fully utilize the dynamic range of the …
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Code-division multiplexing
… model. Each pulse is shaped via a prototype baseband filter such that when the demodulated signal is detected through a baseband matched filter, the resulting output samples satisfy the Generalized Nyquist criterion. Specifically, we propose finite-length, time overlapping orthogonal pulse …
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