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 105 for “"multi-band"”.
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Multi-band excitation vocoder
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1987.
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Superconductivity in Multi-Band and Disordered Systems
… excitations of either the lower or upper Hubbard bands. In the experiments at hand, disorder induces a closing of the Mott gap through the generation of mid-gap localized states at the chemical potential. Depending on the magnitude of the disorder, we find that the destruction of the Mott state …
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A 1.5 Kbps multi-band excitation speech coder
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1990.
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A 4.8 Kbps multi-band excitation speech coder
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1988.
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Antenna Multi-Band Enhancement by Employing Negative Impedance Converters
… originally centered at 2.9 GHz, to create a multi-band network. The network exhibits resonances at frequencies of 0.9 GHz, 1.5 GHz and 1.9 GHz. The work highlights the design process of pairing a NIC with a capacitive, single-band antenna, addressing key challenges such as overcoming the …
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Optimal Sum-Rate of Multi-Band MIMO Interference Channel
… in the same area and occupy the same frequency band(s). The performance of these wireless systems is coupled to each other due to the mutual interference. One such wireless scenario is modeled as a network of simultaneously communicating node pairs and is generally referred to as an interference …
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Mutual Coupling Reduction Techniques for Multi-band Base Station Antennas
… in densely populated dual-polarized broadband multi-band base station antenna (BSA) arrays for improved radiation characteristics. Array face densification without the proposed techniques leads to undesirable interactions between arrays and radome cover. This research is supported by …
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Scaling Optical Transport using Multi-band Photonic Integrated Switching Systems
L'abstract è presente nell'allegato / the abstract is in the attachment
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Multi-Band Optical Networks Capacity, Energy, and Techno-Economic Assessment
L'abstract è presente nell'allegato / the abstract is in the attachment
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MULTI-BAND BOSE HUBBARD MODELS AND EFFECTIVE THREE-BODY INTERACTIONS
… diverse quantum many-body Hamiltonians. A single-band Bose-Hubbard (BH) Hamiltonian was first proposed to describe these systems in 1998 and its associated quantum phase-transition was subsequently observed in 2002. Over the years, there has been a rapid progress in experimental realizations of …
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A multi-band acoustic echo canceller for vehicular handsfree telephone
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
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Compact Digital Predistortion for Multi-band and Wide-band RF Transmitters
… The number of training samples and complex multiplication operations required for coefficients estimation can be reduced by more than ten times without additional calculation resource. Thirdly, based on the proposed theory, this thesis proves that theoretically a DPD system using memory …
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Combining Masked Autoencoding and Neural Fields for Multi-band Satellite Understanding
Multi-spectral satellite remote sensing is a primary way to monitor planet-scale events such as deforestation, land-cover change, fire, and flooding. Unfortunately, incomplete spatial coverage and sparse temporal sampling make it challenging to develop a unified understanding of the environment. We …
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Investigation into the design of ultra-wideband (UWB) and multi-band antennas
… demands on spectrums for which ultra-wideband (UWB) and multi-band, e.g.: dual-band, techniques are useful. These UWB and multi-band services require UWB and multi-band antenna designs. Motivated by these applications, we first carried out the investigations on the family of square plate …
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Safety and data quality of EEG recorded simultaneously with multi-band fMRI
… EEG data quality and safety when used with newer multi-band (MB) fMRI sequences. Here, we measure the relative heating of a MB protocol compared with a standard single-band (SB) protocol considered to be safe. We also evaluated EEG quality recorded concurrently with the MB protocol on humans. We …
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Stochastic Geometry for Mobility-Aware Performance Modeling in 6G Multi-band Wireless Networks
Using tools from stochastic geometry, I develop a stochastic geometry-based tractable framework to analyze the performance of a mobile user in a two-tier wireless network operating on sub-6GHz and terahertz (THz) transmission frequencies. Specifically, using an equivalence distance approach, I …
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Analysis and design of reconfigurable multi-band stacked microstrip patch antennas (MSAs) for wireless applications
… of resonance frequencies and to enhance the bandwidth and gain of the overall MSA, another patch is placed on top of the first antenna. The two patches are separated with a dielectric layer optimized to yield the maximum number of resonance frequencies, bandwidth and gain. The second antenna …
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Silicon-Based RFIC Multi-band Transmitter Front Ends for Ultra-Wideband Communications and Sensor Applications
Fully integrated Ultra-Wideband (UWB) RFIC transmitters are designed in Si-based technologies for applications such as wireless communications or sensor networks. UWB technology offers many unique features such as broad bandwidth, low power, accurate position location capabilities, etc. This …
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