Now showing items 45-64 of 2197

    • EFFECT OF OPTSCAL CHANNAL BANDWIDTH ON THE IMMUNSTI OF NRZ AND RZ LINEAR CODES 

      Breskin, V.A.; Mazur, A.D.; Rozenvasser, D.M.; Брескин, В.А.; Мазур, А.Д.; Розенвассер, Д.М.; Брескін, В.О.; Мазур, А.Д.; Розенвассер, Д.М. (TCSET, Lviv-Slavske, Ukraine, 2012)
      A comparative assessment of the required bandwidth of the optical channel of FOTS using NRZ and RZ linear codes is given in this paper.
    • EFFICIENCY ANALYSIS OF UAV AND COMMUNICATION DEVICES 

      Венідіктов, О.В.; Венидиктов, О.В.; Venidiktov, O.V.; Шмельова, Т.Р.; Шмелёва, Т.Р.; Shmeleva, T.R. (ОНАЗ ім. О.С. Попова, 2016)
      In this paper Unmanned Aerial Vehicle were classified. Main application goals of UAV were defined. The technical problems of the UAV were investigated. Closings of a communication channel with the UAV cryptographic means ...
    • EFFICIENCY ESTIMATION OF COMPUTING GRIDS WITH VARIOUS TRAFFIC TYPES 

      Shmeleva, T.R.; Шмельова, Т.Р.; Шмелёва, Т.Р. (ОНАЗ ім. О.С. Попова, 2017)
      For the efficiency evaluation of computing grids with different types of traffic, reenterable colored Petri nets are suggested. The principles of constructing models in the form of reenterable colored Petri nets are ...
    • EFFICIENCY EVALUATION OF THE "VECTORING" SYSTEM APPLICATION ON THE CONNECTING LINES DURING MODERNIZATION OF THE RURAL TELEPHONE NETWORK 

      Оreshkov, V.І.; Орєшков, В.І.; Орешков, В.И. (ОНАЗ ім. О.С. Попова, 2018)
      The urgency of the "digital divide" problem is a global problem. That the problem is in particular and acute in Ukraine, is described in the article. It is proposed to use VDSL2 technology for modernization of the rural ...
    • EFFICIENCY OF PARTLY ERRORS CORRECTION IN ARQ DTS BASED ON TIMER SIGNAL CONSTRUCTION 

      Захарченко, Н.В.; Хомич, С.В.; Белова, Ю.В.; Севастев, Е.А.; Захарченко, Н.В.; Хомич, С.В.; Сєвастєєв, Е.О.; Zakharchenko, N.V.; Homich, S.V.; Belova, Yu.V.; Sevasteev, E.A. (ОНАЗ ім. О.С. Попова, 2014)
      Розроблено метод передавання на базі систем з вирішальним зворотнім зв’язком та таймерних сигнальних конструкцій з корегуванням частини помилок інтервалу «хорошого» стану рівнянням якості. Визначені граничні умови його ...
    • EFFICIENCY STUDY OF ALGORITHMS APPLIED IN DVB-T/ DVB-T2 SYSTEMS AT PRESENCE OF PHASE NOISE 

      Баляр, В.Б.; Balyar, V.B. (ОНАЗ ім. О.С. Попова, 2014)
      In article study results in direction of efficiency estimation of algorithms used in DVB-T/ DVB-T2 systems at presence of phase noise with parameters defined in DSTU ETSI TR 101 290. Obtained estimations will be used as ...
    • ELABORATION OF A SOFTWARE AND LAB ENVIRONMENT FOR IN-DEPTH OWD ANALYSIS ON WIRELESS LINKS USING LTEST 

      Nikityuk, L.A.; Siemens, E.; Нікітюк, Л.А.; Сіменс, Е.; Никитюк, Л.А.; Сименс, Е. (ОНАЗ ім. О.С. Попова, 2014)
      : Research of optimal transfer protocol for organization of a reliable data transfer between serial devices for GPRS/EDGE and UMTS networks with subsequent using it in elastic jitter buffer algorithm. The main criterion ...
    • ESTIMATING THE SERVICE WAITING PROBABILITY IN A SINGLE-CHANNEL SYSTEM WITH SELF-SIMILAR TRAFFIC 

      Lozhkovskyi, A.G.; Levenberg, E.V.; Ложковський, А.Г.; Левенберг, Є.В.; Ложковский, А.Г.; Левенберг, Е.В. (ОНАЗ ім. О.С. Попова, 2018)
      Estimation of the service quality characteristics in a single-channel system with queue for the packet network is often reduced to the determination of the Hurst exponent for self-similar traffic, after which using the ...
    • ESTIMATION OF QoS CHARACTERISTICS OF SELF-SIMILAR TRAFFIC FOR THE Wв/M/1/infinity QUEUING SYSTEM 

      Strelkovskaya, I.V.; Siemens, E.; Solovskaya, I.N.; Fedotova, I.; Стрелковська, І.В.; Сіменс, Е.; Соловська, І.М.; Федотова, І.; Стрелковская, И.В.; Сименс, Е.; Соловская, И.Н.; Федотова, И. (ОНАЗ ім. О.С. Попова, 2018)
      The work considers the problem of Quality of Service (QoS) characteristics estimation for self-similar traffic serviced by a queuing system of the Wв/M/1/infinity type using the Weibull distribution. To solve this problem, ...
    • FORMALIZATION OF THE INFOCOMMUNICATION NETWORK ADAPTATION TASK WITHIN THE LIFE CYCLE AND THE GENERAL APPROACH TO ITS SOLUTION BASED ON GENETIC ALGORITHMS 

      Nikityuk, L.A.; Нікітюк, Л.А.; Никитюк, Л.А. (ОНАЗ ім. О.С. Попова, 2017)
      Infocommunication network on formal grounds is a complex system that functions in a disturbing environment, evolves over time and is characterized by non-stationary fault flow of its subsystems and elements. In this paper ...
    • FORMATION THE PIЕCOSECOND OPTICAL PULSES OF THE ASSIGNED STRUCTURE USING PRECISION LINES OF DELAY 

      Odegov, N.A.; Staren"kiy, I.V.; Kostjuk, V.V (ОНАЗ ім. О.С. Попова, 2018)
      The article examines the development of methods of one to increase the spectral efficiency of the fiber optic systems of transmission. The essence of the method is shown with the use of alphabet as signals with peak ...
    • FOURIER ANALYSIS OF THE TEXTURE OF HIGH-DEFINITION IMAGES 

      Osharovskaya, E.V.; Ошаровська, О.В.; Ошаровская, Е.В.; Patlayenko, N.A.; Патлаєнко, М.О.; Патлаенко, Н.А.; Pyliavskyi, V.V.; Пілявський, В.В.; Пилявский, В.В. (Львівський національний університет ім. Івана Франка, 2018)
      This paper presents the results of measuring the signal-to-noise ratio at the boundary of object contours in highdefinition images after compression of the original digital stream based on the Fourier transform and the ...
    • FRACTAL CODING OF VIDEO SEQUENCES BY GENETIC ALGORITHM 

      Osharovskaya, E.V.; Patlaenko, N.A.; Ошаровська, О.В.; Патлаєнко, М.О.; Ошаровская, Е.В.; Патлаенко, Н.А. (ОНАЗ ім. О.С. Попова, 2017)
      The results of application of the modified genetic algorithm of fractal coding to still images and video sequences are presented. The dependence of the compression coefficient on the size of the rank block is obtained. ...
    • GENERAL INDIVIDUAL ATTACK ON THE PING-PONG PROTOCOL WITH COMPLETELY ENTANGLED PAIRS OF QUTRITS 

      Vasiliu, E.V.; Васіліу, Є.В.; Василиу, Е.В. (Cornell University, 2009)
      The general individual (non-coherent) attack on the ping–pong protocol with completely entangled pairs of three–dimensional quantum systems (qutrits) is analyzed. The expression for amount of the eavesdropper’s information ...
    • GENERATION OF DEFECTS IN P-N-JUNCTIONS THAT ARE MADE FROM GaAS AND GaAIAS AFTER THE X-RAY IRRADIATION 

      Irkha, V.I.; Ірха, В.І.; Ирха, В.И.; Gorbachev, V.E.; Горбачов, В.Е.; Горбачев, В.Э.; Mikhalaki, V.F.; Міхалакі, В.Ф.; Михалаки, В.Ф. (Національний університет «Львівська політехніка», 2012)
      The process of generation and reproduction of dark-patch defects in GaAs and GaAlAs p-n-junctions after the X-ray irradiation are considered.
    • THE GENERELIZED CLASSIFICATION MODEL OF IoT-PLATFORMS 

      Tsaryov, R.Yu.; Korovkina, K.V.; Царьов, Р.Ю.; Коровкіна, К.В.; Царёв, Р.Ю.; Коровкина, К.В. (ОНАЗ ім. О.С. Попова, 2017)
      The relevance of the concept development of the Internet of Things was shown in the article. The generalized classification model of Internet of Thighs (IoT) platforms was proposed. The model is represented by two levels: ...
    • H-ФРАКТАЛЬНЫЕ АНТЕННЫ 

      Цалієв, Т.А.; Цалиев, Т.А.; Tsaliev, Т.А.; Король, Е.Р.; Король, Э.Р.; Korol, E.R. (ОНАЗ ім. О.С. Попова, 2014)
      В данной работе произведен анализ потенциала применения фрактальных антенн на примере антенных элементов H-фрактальной геометрии.
    • IMPLEMENTATION OF A DTW ALGORITHM FOR AN ESTIMATION OF THE ECG SIGNALS 

      Мазур, Г.Д.; Мазур, А.Д.; Mazur, A.D. (ОНАЗ імені О.С. Попова, 2015)
      Dynamic Time Warping algorithm and its types were described in this work. DTW distance was compared to Euclidian distance. Software with implementation of DTW algorithm was done in MatLab environment for comparison of two ...
    • IMPROVING DYNAMICS OF OBJECTS INTERACTION IN LTE BASED WIRELESS NETWORK 

      Taher, A.K.; Тахер, А.К. (ОНАЗ ім. О.С. Попова, 2016)
      This work analyses resource scheduling in LTE technology radio channel consider dynamics of terminal network objects interaction in real-time mode for multimedia data transmission over a packet-based network. It is ...
    • IN THE FIELD OF NEXT GENERATION NETWORKS BUILDING 

      Vorobienko, P.P.; Воробієнко, П.П.; Воробиенко, П.П. (Одеський національний політехнічний університет, 2013)
      There is provided an overview of the number of innovative technological solutions created by the scientists of A.S.Popov ONAT in the field of NGN building. In particular we consider the new telecommunication technologies ...