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20 results on '"Kovacs, Lorant"'

1. A probabilistic demand side management approach by consumption admission control

Author

Kovacs, Lorant, Drenyovszki, Rajmund, Olah, Andras, Levendovszky, Janos, Tornai, Kalman, and Pinter, Istvan

Subjects
Computer Science - Systems and Control
Abstract

New generation electricity network called Smart Grid is a recently conceived vision for a cleaner, more efficient and cheaper electricity system. One of the major challenges of electricity network is that generation and consumption should be balanced at every moment. This paper introduces a new concept for controlling the demand side by the means of automatically enabling/disabling electric appliances to make sure that the demand is in match with the available supplies, based on the statistical characterization of the need. In our new approach instead of using hard limits we estimate the tail probability of the demand distribution and control system by using the principles and the results of statistical resource management.

Published
2016

2. Deep Learning Based Consumer Classification for Smart Grid

Author

Tornai, Kálmán, Oláh, András, Drenyovszki, Rajmund, Kovács, Lóránt, Pintér, István, Levendovszky, János, Akan, Ozgur, Series editor, Bellavista, Paolo, Series editor, Cao, Jiannong, Series editor, Coulson, Geoffrey, Series editor, Dressler, Falko, Series editor, Ferrari, Domenico, Series editor, Gerla, Mario, Series editor, Kobayashi, Hisashi, Series editor, Palazzo, Sergio, Series editor, Sahni, Sartaj, Series editor, Shen, Xuemin Sherman, Series editor, Stan, Mircea, Series editor, Xiaohua, Jia, Series editor, Zomaya, Albert Y., Series editor, Lau, Eng Tseng, editor, Chai, Michael K.K., editor, Chen, Yue, editor, Jung, Oliver, editor, Leung, Victor C.M., editor, Yang, Kun, editor, Bessler, Sandford, editor, Loo, Jonathan, editor, and Nakayama, Tomonori, editor

Published
2017
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8. Approximate Minimum Bit Error Rate Equalization for Fading Channels

Author

Levendovszky Janos, Olah Andras, Treplan Gergely, and Kovacs Lorant

Subjects
Telecommunication, TK5101-6720, Electronics, TK7800-8360
Abstract

A novel channel equalizer algorithm is introduced for wireless communication systems to combat channel distortions resulting from multipath propagation. The novel algorithm is based on minimizing the bit error rate (BER) using a fast approximation of its gradient with respect to the equalizer coefficients. This approximation is obtained by estimating the exponential summation in the gradient with only some carefully chosen dominant terms. The paper derives an algorithm to calculate these dominant terms in real-time. Summing only these dominant terms provides a highly accurate approximation of the true gradient. Combined with a fast adaptive channel state estimator, the new equalization algorithm yields better performance than the traditional zero forcing (ZF) or minimum mean square error (MMSE) equalizers. The performance of the new method is tested by simulations performed on standard wireless channels. From the performance analysis one can infer that the new equalizer is capable of efficient channel equalization and maintaining a relatively low bit error probability in the case of channels corrupted by frequency selectivity. Hence, the new algorithm can contribute to ensuring QoS communication over highly distorted channels.

Published
2010

9. Minimum Probability of Error-Based Equalization Algorithms for Fading Channels

Author

van der Meulen Edward C, Levendovszky Janos, and Kovacs Lorant

Subjects
Telecommunication, TK5101-6720, Electronics, TK7800-8360
Abstract

Novel channel equalizer algorithms are introduced for wireless communication systems to combat channel distortions resulting from multipath propagation. The novel algorithms are based on newly derived bounds on the probability of error (PE) and guarantee better performance than the traditional zero forcing (ZF) or minimum mean square error (MMSE) algorithms. The new equalization methods require channel state information which is obtained by a fast adaptive channel identification algorithm. As a result, the combined convergence time needed for channel identification and PE minimization still remains smaller than the convergence time of traditional adaptive algorithms, yielding real-time equalization. The performance of the new algorithms is tested by extensive simulations on standard mobile channels.

Published
2007

19. THE IMPORTANCE OF INVESTING IN EDUCATION OF HUMAN RESOURCES IN MANAGEMENT

Author

Kulaš, Anita, Kraljić, Lucija, and Kovacs, Lorant

Subjects
Human resources, education, management
Abstract

Education is needed so that the organization could accomplish the goals of the enterprise. Apart from managing and education of people, there are other key concepts of work that are being worked on, and those are: motivation of the workers, investing in human resources, team-work, organizational study, emotional intelligence in management and it`s development, career and people management. Allows these activities are part of the organization and its functions which serve for development and the successful progress of the company. The practical example of investing in education of human resources was analyzed at the end of the paper.

Published
2014

20. Analysis of tourist markets of organized trips in Croatia

Author

Katolik, Andreja, Vuković, Jelena, Jurković, Zvonimir, Kovacs, Lorant, Csaba Jahanyak, Zsolt, and Pap-Szigeti, Robert

Subjects
tourism, market, tour operators
Abstract

The paper defines the factors underlying the Croatian tourist offer and analyzes previous results in Croatian tourism, all in order to identify relevant trends existing in the Croatian tourism since its independence and earlier. Then it analyzes the current share of tour operators, especially the leading specialist tour operator for Croatia who works in Croatia. The purpose of this paper is to ultimately connect all the conclusions of the study in order to identify set goals. So, in order to know what is the actual representation of Croatia in programs leading tour operators that acts on foreign tourist generating markets, what is the position of Croatia in relation to other competing destinations and the role of tour operators specialized in organizing trips to Croatia. At the end of the paper further development of specialist tour operator for Croatia is presented.

Published
2014

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