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 96 for “"SISO"”.
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Phase behaviors of ABAC tetrablock terpolymers
… ly(styrene-b-isoprene-b-styrene-bethylene oxide) (SISO) as the model system, synthesized via a living anionic polymerization method and characterized with NMR, GPC, TEM, SAXS, DSC and DMS. In the compositional study, two series of the isoprene-rich and the styrene-rich symmetric SISO samples (the S …
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Balancing a two-wheeled Segway robot
… losses in the motors were incorporated. A SISO PID compensator and a SISO lead-lag compensator were designed to balance the robot based on the new model; both showed acceptable system responses but were subject to high-frequency oscillation. A SISO state feedback controller was also …
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Performance Evaluation of Multiuser Detectors with V-BLAST to MIMO Channel
… Rayleigh flat fading single-input single-output (SISO) and multiple-input multiple-output (MIMO) channel models. First, we review the performance of three multiuser receivers; the decorrelator, the MMSE receiver and the multistage parallel interference cancellation receiver in an AWGN and Rayleigh …
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Space-Time Coding with Offset Modulations
… a bit error rate performance that matches the SISO case but with much higher complexity than that of the QPSK decoder. A second decoder matches the simplicity of the decoder for STC encoded non-offset QPSK but with a loss of 3 dB relative to the single-input, single-output (SISO) case. A third …
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AUTOMATED MEDICATION INFUSION SYSTEM DESIGN
… and complex, a single-input single-output (SISO) semi-adaptive control approach which only adapt can adapt model parameters having a large impact on the model’s fidelity was introduced. Thirdly, the complicated interaction of multiple medications makes the adaptive controller for two …
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Turbo equalization using message passing methods with higher order modulation signaling
… equalization. In this thesis we will employ the SISO algorithm based on linear MMSE filter for the equalizer and use the SISO algorithm based on MAP/BCJR for the decoder in order for the massage passing in the turbo equalization. The objective of this thesis is to study the proposed turbo …
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Advanced Orthogonal Frequency-Division Multiplexing Systems with Cyclic Prefix-Less Multiple-Input and Multiple-Output Discrete Fourier Transform Spreading and Unmanned Aerial Vehicles-Assisted Cyclic Postfixed Windowed Schemes
… of CP-less Single-Input Single-Output (SISO) OFDM technique with Multiple-Input Multiple-Output (MIMO) technology adopted 5G systems, we present the first CP-less MIMO OFDM System. It is based on incorporating Discrete Fourier transform (DFT) spreading, signal discrimination with …
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Algorithms and Architectures for Joint Equalization and Decoding
… processing VLSI architecture is proposed, where SISO equalizers and decoders are running concurrently, thereby increasing throughput by up to 75%. To improve the BER further, a class of switching linear turbo equalizers is also shown along with several feasible switching schemes.
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Multi-Input Multi-Output Repetitive Control Theory And Taylor Series Based Repetitive Control Design
… controllers for single-input single-output (SISO) systems, and compares the designs obtained to those generated by optimization in the frequency domain. This approach is very simple, straightforward, and easy to use. It also supplies considerable insight, and gives understanding of the cause …
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An investigation of turbogenerator dynamics and control
… system as a pseudo- Single-Input Single-Output, (SISO) system where the governor loop is first closed and the exciter loop is treated as a SISO system for the prime purpose of rejecting voltage disturbances. The function of the PSS is identified as that of overcoming an awkward switch-back …
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Linear-time invariant Positive Systems: Stabilization and the Servomechanism Problem
… problem for both single-input single-output (SISO) and multi-input multi-output (MIMO) stable positive LTI systems. The study of the positive servomechanism problem focuses on the tracking problem of nonnegative constant reference signals for unknown/known stable SISO/MIMO positive LTI systems …
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New modelling and control methods with application to combined cycle power plants
… predictive PID controller design method for both SISO and MIMO systems. This methodology is concerned with the design of PID controllers, which have similar features to the model-based predictive controller. Generalized Predictive Control (GPC) design principles are used to develop the PID control …
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A method of characterisation of the nonlinear vibration transmissibility of cushioning materials
… system by a Single Input-Single Output (SISO) approach assuming a linear relationship. However, the product/cushion system can exhibit strong nonlinear behaviour. The Reverse Multiple Input-Single Output (R-MISO) approach has shown a greater ability to more accurately characterise the …
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Implementation of Parallel and Serial Concatenated Convolutional Codes
… and the general soft-input soft-output (SISO) decoding module. Sliding window techniques, which can be employed to reduce memory requirements, are also briefly discussed. The second part of this dissertation presents four major contributions to the field of concatenated convolutional …
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Applied Control Strategies at a Cogeneration Plant
… include the following:</p> <p>1) The classical SISO feedback structure</p> <p>2) The First Order Plus Dead Time (FOPDT) process model</p> <p>3) The Internal Model Control (IMC) correlations for PI controller tuning</p> <p>4) Static feed forward with feedback trim</p> <p>5) Cascade Control</p>
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TOWARDS RELAY FEEDBACK AUTO-TUNING OF MULTI-LOOP SYSTEMS
Many single-input/single-output (SISO) and multi-input /multi-output (MIMO) systems in the process industry have simple controllers mainly of PI/PID structures placed on them in a multi-loop fashion. This thesis is a step towards the autotuning of these controllers using the relay feedback …
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Intelligent algorithms applied to weather radar based flood forecasting system
… time-invariant and Single Input Single Output (SISO) system. The calculation formula for the moment parameters and the geometry coefficients (t-peak time, volume parameter) create the initial model and a genetic algorithm provides the basic tool to global search for the parameters. An expert …
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Physical layer security: secrecy performance analysis and design of cooperative communication systems
… analysis for a Single-Input Single-Output (SISO) system with Nakagami-m fading. Unlike many studies that have investigated the dissimilar fading scenarios, there was a need to close the gap in the literature by proposing, presenting and analysing similar fading scenario for SISO system that …
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ARQ Techniques for MIMO Communication Systems
… developed for single-input single-output (SISO) communication systems have to be modified in order to be employed in MIMO communication systems. In this dissertation, we propose and analysis some ARQ techniques for MIMO communication systems. The basic retransmission protocols of ARQ, …
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Fast peak-power reduction for MIMO-OFDM systems with diversity
… ratio (PAPR) of single-input single-output (SISO) orthogonal frequency-division modulated (OFDM) signals by extending the outer constellation points in a way that minimizes the PAPR of an OFDM transmit signal, without reducing the bandwidth or increasing bit error rate (BER). Recent work …
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