نتایج جستجو برای: p power convexification method

تعداد نتایج: 3129501  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند 1388

a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...

2017
Yu Zhang Ramtin Madani Javad Lavaei

This paper deals with the non-convex power system state estimation (PSSE) problem, which plays a central role in the monitoring and operation of electric power networks. Given a set of noisy measurements, PSSE aims at estimating the vector of complex voltages at all buses of the network. This is a challenging task due to the inherent nonlinearity of power flows, for which existing methods lack ...

Journal: :Journal of modern power systems and clean energy 2023

The increasing penetration of the renewable energy sources brings new challenges to frequency security power systems. In order guarantee system security, constraints are incorporated into unit commitment (UC) models. Due non-convex form nadir constraint which makes constrained UC (FCUC) intractable, this letter proposes a revised support vector machine (SVM) based parameter separating plane met...

Journal: :CoRR 2017
Mohammad Hadi Mohammad Reza Pakravan

We propose an energy-efficient procedure for transponder configuration in FMF-based elastic optical networks in which quality of service and physical constraints are guaranteed and joint optimization of transmit optical power, temporal, spatial and spectral variables are addressed. We use geometric convexification techniques to provide convex representations for quality of service, transponder ...

Journal: :Journal of Applied and Industrial Mathematics 2021

This paper is concerned with the study of a version globally convergent convexification method direct application to synthetic aperture radar (SAR) imaging. Results numerical testing are presented for experimentally collected data fake landmine. The SAR imaging technique common tool used create maps parts surface Earth or other planets. Recently, it has been applied in context noninvasive inspe...

2007
Santiago Cerisola Jesus M. Latorre Andres Ramos

In this paper we present a solution method for stochastic integer problems. The method is a Benderstype algorithm that sequentially approximates the nonconvex recourse functions defined by the second stage subproblems. The presented convexification takes into account the domain that is induced by the collection of tender variables. The method is applied to a broad collection of stochastic integ...

Journal: :Int. J. Digital Multimedia Broadcasting 2010
Gábor Fodor Mikael Johansson Pablo Soldati

We consider the problem of setting the uplink signalto-noise-and-interference (SINR) target and allocating transmit powers for mobile stations in multicell spatial multiplexing wireless systems. Our aim is twofold: to evaluate the potential of such mechanisms in network multiple input multiple output (MIMO) systems, and to develop scalable numerical schemes that allow real-time near-optimal res...

Journal: :MATHEMATICA SCANDINAVICA 1975

2013
Tao Li Yanjun Wang Zhian Liang

A general class of convexification transformations is proposed to convexify the noninferior frontier of a multiobjective program. We prove that under certain assumptions the noninferior frontier could be convexified completely or partly after transformation and then weighting method can be applied to identify the noninferior solutions. Numerical experiments are given to vindicate our results.

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