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 500 for “"mimo"”.
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MIMO channel model
Multiple-input multiple-output is a system that allows the technology to meet the growing demand for high data rates in wireless communications systems. The aim of this thesis is to investigate the capacity capability of the geometric channel model by using the one-ring and two-ring channel model …
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Transmit Signal Design for MIMO Radar and Massive MIMO Channel Estimation
… of this work, we develop the framework for a MIMO radar transmit scheme which trades o waveform diversity for beampattern directivity. Time-division beamforming consists of a linear precoder that provides direct control of the transmit beampattern and is able to form multiple transmit beams in …
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Mimo systems parameters identification
In this thesis, a presentation of a new canonical representation of multi-input multi-output systems is given. The new characterization covers the full range of practical situations in linear systems according to the structural properties and model of the perturbations which are known. Its direct …
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Some contributions on MIMO radar
… advances in Multiple Input Multiple Output (MIMO) wireless communications, this dissertation aims at exploring the potential of MIMO approaches in the radar context. In communications, MIMO systems combat the fading effects of the multi-path channel with spatial diversity. Further, the …
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Mutual coupling in MIMO systems
… have arisen. Multiple Input Multiple Output (MIMO) antenna topologies have provided promise of the desired system capacity and reliability. Since MIMO systems employ two or more antenna pairs simultaneously, the effects of mutual coupling become a significant consideration in the quest to …
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Rate selection for MIMO links
Over the years, multiple-input multiple-output (MIMO) technology has become more prevalent in modern wireless communication systems. MIMO systems take advantage of multiple antennas at the transmitters and receivers, as well as multipath propagation, to provide more reliable, higher capacity …
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Target localization in MIMO radar systems
MIMO (Multiple-Input Multiple-Output) radar systems employ multiple antennas to transmit multiple waveforms and engage in joint processing of the received echoes from the target. MIMO radar has been receiving increasing attention in recent years from researchers, practitioners, and funding …
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ARQ Techniques for MIMO Communication Systems
Multiple-input multiple-output (MIMO) communication systems employ multiple antennas at the transmitter and the receiver. Multiple antennas provide capacity gain and/or robust performance over single antenna communications. Traditional automatic-repeat-request (ARQ) techniques developed for …
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Wideband Channel Characterization for MIMO Scenario
… wireless multiple-input multiple-output (MIMO) channel models. This thesis verifies the suitability of the Saleh Valenzuela with Angle (SVA) model for wideband MIMO communication models. While recent wideband MIMO measurements have been obtained by switching a single transmit/receive pair …
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MIMO Wireless Networks: Modeling and Optimization
… (also known as multiple-input multiple-output (MIMO) technology). The benefits of substantial improvements in capacity at no cost of additional spectrum and power have positioned MIMO as one of the breakthrough technologies in modern wireless communications. As expected, research activities on …
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Communication Synthesis for MIMO Decoder Matrices
… The primary example modeled in this work is MIMO decoding. Making this possible are 16 functional unit containers within the framework, with generalized interfaces, which can hold custom user hardware and IP cores. This framework, which is controlled by a microsequencer, is centered on a …
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Power-optimal MIMO two-way relay networks
In this dissertation, we study MIMO two-way relay networks consisting of singleantenna users which wish to exchange information with the help of multiple multiantenna relays. The problem we aim to solve is to minimize the total transmit power consumed in the entire network while certain …
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Low-Cost Architectures for Future MIMO Systems
Massive multiple-input multiple-output is a promising technique for the next generation of wireless communication systems which addresses most of the critical challenges associated with concurrent relaying systems, such as digital signal processing complexity, long processing delay,<br/>and low …
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Linear Precoding for Downlink Network MIMO Systems
… collaboration, also known as downlink network MIMO, has been proven to suppress the adverse effects of inter-cell interference (ICI), and as a result, to improve the performance of cell edge users. Beamforming, also known as linear precoding, is a possible transmission strategy to reduce the …
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Evaluation of coding scheme for MIMO radar
Multiple Input Multiple Output (MIMO) antenna systems have shown a great potential for wireless communication. These systems support high capacity, increased diversity and interference suppression. Recently it has been proposed MIMO constellations for Radar. MIMO Radar is not only a new research …
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