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We consider a full-duplex (FD) system where the uplink (UL) and downlink (DL) users are simultaneously served in the same bandwidth. We propose a new design that incorporates the power allocation for UL users and a joint beamforming and non-orthogonal multiple access for DL users under the effects of both residual self-interference and cochannel interference. In particular, a sum rate maximization...
The navigation relayed by multiple stations (NRMS) is an advanced cooperative navigation technology which relies on multiple different stations to sequentially guide a vehicle to its destination. This paper addresses the optimal path planning problem for the vehicle navigated by the NRMS technology (OPP-V-NRMS) which is a challenging hierarchical mixed-variable constrained optimization problem involving...
Linear reconstruction techniques based on the Born approximation are known to be unable to reconstruct speed of sound quantitatively. Recently, it was shown that non-linear reconstructions based on the Kaczmarz method can overcome this limitation (Hesse, Salehi, and Schmitz 2013). However, a fundamental problem towards its practical application is the convergence. As described by Natterer (Natterer...
In this paper, an existing numerical algorithm for high-accurate computation of exact Carson formulas based on piecewise linear approximation is improved. Carson formulas are used for computing of per-unit-length (pul) self and mutual impedances of infinitely long parallel conductors. The proposed algorithm is based on piecewise quadratic approximation of kernel function and analytical integrations...
In this paper, a new numerical algorithm for high-accurate computation of exact Carson formulas is developed. Carson formulas are used for computing of per-unit-length (pul) self and mutual impedances of infinitely long parallel conductors. The proposed algorithm is based on piecewise linear approximation of kernel function and analytical integrations of piecewise-linearized kernel function multiplied...
In this paper, the Modified Cauer form (MCF) is considered to obtain a low-order model from a high-order model. It is based on continued fraction (CF) method and is being used to obtain low-order models. The Low-order model of a system gives easy analysis as compared to original high-order model. The efficient reduced order model always envisages the main properties of the original system. The step...
The inherent characteristics of processes in practice can be more precisely described by the fractional order differential equations because of the arbitrary orders and the distinctive memory feature of fractional order calculus. In this paper, a fractional order PID-type dynamic matrix controller is designed for a class of fractional order linear single input and single output systems. The approximate...
The paper considers the class of discrete-time, single-input, single-output, nonlinear dynamical systems described by a polynomial difference equation. This class, call polynomial time-invariant, is a proper generalization of the linear time-invariant model class. The identification data is assumed to be generated in the errors-in-variables setting, where the input and the output noise is zero mean,...
In this paper, we propose two types of noise shaping infinite impulse response (IIR) filters for ΔΣ modulators based on H2 and H∞ norms of the in-band quantization noise. We utilize the hybrid-design and the least-squares approximation method to obtain noise shaping IIR filters by taking an indirect approach for solving the non-convex optimization problem. In both methods, we also incorporate the...
To improve the dynamic performance of the electro-hydraulic servo system, the best-rational controller is designed by realizing the fractional order PID controller based on the best-rational function theory. Firstly, in the frequency domain, the rational models of the fractional differential and integral operators are realized based on the best-rational function theory. Secondly, the fractional order...
In this paper, an approximation method of reachable sets for linear discrete systems with bounded input is proposed. The method finds boundary points of reachable sets by solving finite convex optimization problems. It not only constructs an inner approximation bounding but also an outer approximation bounding. Two numerical examples are used to demonstrate the validity of the algorithm. Compared...
In this paper a new special class of separable normed cones is selected by us. This class includes cones in normed spaces as well as cones in linear spaces with asymmetric norms. Examples of separable normed cones that do not admit a linear injective isometric embedding in a normed space are given. In the class of separable normed cones the concept of compact subdifferential is introduced. The main...
The approximate continuous-time output regulation problem of the spherical inverted pendulum has been well addressed in recent years. Because most of the nonlinear control laws are implemented as digital controllers, this paper further studies the approximate discrete-time output regulation problem of the spherical inverted pendulum by neural network control. The solvability of the discrete-time output...
In the studies of 5th generation (5G) wireless communication systems, an alternative method to orthogonal frequency division multiplexing (OFDM) used for 4th generation (4G) systems is still being investigated. OFDM with offset quadrature amplitude modulation (OFDM/OQAM) is one of these alternatives. Due to the reasons such as absence of cyclic prefix (CP) in its structure and perfect separation between...
In This work we use the Sub-optimal Approximation method of fractional order transfer function to design the parameters of a PID controller with fractionalized integrator. The performance analysis of the fractionalized PID controller over integer order PID controller is provided with simulation examples showing the effectiveness of the proposed technique against disturbances.
With the rapid development of mobile networks and the widespread usage of mobile devices, spatial crowdsourcing [1], which outsources location-related tasks to moving workers, has drawn increasing attention. Spatial crowdsourcing differs from traditional crowdsourcing in that tasks released by a requester are location-related, and workers should physically travel to a specific spot to perform the...
We consider supervised learning problems over training sets in which both the number of training examples and the dimension of the feature vectors are large. We focus on the case where the loss function defining the quality of the parameter we wish to estimate may be non-convex, but also has a convex regularization. We propose a Doubly Stochastic Successive Convex approximation scheme (DSSC) able...
Approximate circuits and approximate circuit design methodologies attracted a significant attention of researchers as well as industry in recent years. In order to accelerate the approximate circuit and system design process and to support a fair benchmarking of circuit approximation methods, we propose a library of approximate adders and multipliers called EvoApprox8b. This library contains 430 non-dominated...
Video processing performed directly on IoT nodes is one of the most performance as well as energy demanding applications for current IoT technology. In order to support real-time high-definition video, energy-reduction optimizations have to be introduced at all levels of the video processing chain. This paper deals with an efficient implementation of Discrete Cosine Transform (DCT) blocks employed...
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