Content №4-2010

Popov A.G., graduate MTUCI

Popov V.I., engineer MTUCI

Fiber OpticSwitch

Abstract
The paper describes thedesign of spectrally-selective switch on a Mach-Zehnder interferometer. An algorithm for selecting wavelength optical carrier channel and the appropriate settings interferometers.

Keywords:Mach-Zehnder fiber-optical switch, splitter, multiplexer, demultiplexer, interference, wave-guide.

References
1. Suzuki S.et al. Optical wavelength-division multiplex transmission network device using transceiver having 2-input/2-output optical path switch // Patent EP 1043847, 2000.

2. H.W. Kogelniket al. Passive – star coupler // Patent US № 4.787.693, 1998.

3. Goncharov, A.A., Svetikov V.V., Svidzinsky K.K., Sychugov V.A., Usievich B.A. Integrated optical analog of the Michelson echelon, its main properties, and applications // Quantum Electronics, 2004. Vol. 34. No 8.

4. Oberg M.G. Optical NxN wavelength cross-connect // Patent WO/1996/011537.

5. M. Russo, J.R. Mathieu.Tasks on optics. M.: MIR, 1976.

6. A. Snyder, Dzh. Lav.The theory of optical waveguides. M.: Radio and svyaz, 1987.

7. Wu Ming-Chiang.Compact wavelength-selective optical crossconnect // Patent WO/2004/015459.

8. M. Kuznetsov.Cascaded coupler Mach-Zehnder chammel dropping filters for Wavelength-Division Multiplexed optical systems // Journal of Lightwave Technology, 1994. Vol. 12. No 2. pp. 226-230.

9. R. Freeman. Fiber-optic communication systems. M.: Technosphere, 2004.

10. Koji T.et al. Wavelength selective and level adjusting optical device // Patent WO US2007/258678.

Klimov D.A.,Ph.D. MTUCI, klimov@srd.mtuci.ru

Koltunov M.N.,Ph.D., MTUCI, mihnatk@rambler.ru

Organizationmeasurements during system operation TCC

Abstract
In this article determine necessary measuring for synchronization network exploitation, gives reliable action with general network. Examine to rights measuring. Bring standard measuring methods and limit parameters measuring characteristics.

Keywords: network timing, timing signal, timing interval, primary referents clock, stand alone synchronization equipment, synchronization loop.

References
1.Koltunov M.N. Legotin N.N., Schwartz M.L. Network synchronization in communication systems. M.: SYRUS SYSTEMS, 2007.- 240 p.

2.Order №161 of the Ministry of Communication 07.12.2006.

3.Melnikov N.F. Metrological support system clock network synchronization in digital public network of the Russian Federation / / Metrology and measurement. № 6, 1999. pp. 18-27.

4.Recommendation industry R45.09-2001 “Connection carrier networks to the core network clock network synchronization” / / Russian Ministry of Communications. M., 2001.

5.ITU-T G. 811, 1998.

6.ITU-T G. 812, 2002.

7.ITU-T G. 823, 2002.

8.ETSI EN 300 462-3-1, 2003.

9.ETSI EN 300 462-4 – 2002.

10.ETSI EN 300 462-6-1, 1998.

11.ETSI EN 300 462-7-1, 2001.

Kryazhenkov K.G., Head TsSUiT, Moscow State Institute of Radio Engineering, Electronics and Automation (Technical University), konstantin@mirea.ru

Dynamic creation ofEthernet topologies in telecommunication complexes educational purpose

Abstract
This article describes a new solution for remote dynamic formation of Ethernet topologies in the telecommunication educational bundles. The choice of platform cross-connect devices and proposes a stepwise algorithm for the formation of the stand.

Keywords: dynamic topology, the cross-switching, remote access to telecommunications equipment.

References
1.Use of a Remote Network Lab as an Aid to Support Teaching Computer / / CLEI ELECTRONIC JOURNAL [electronic resource] / auth. M. Aravena, A. Ramos -12 (1), p. 6, April, 2009: http://www.clei.cl/cleiej/papers/v12i1p6.pdf.

2.Complex TermiLab-band remote access to telecommunications equipment: Electronic Catalogue of scientific papers of the Russian Academyof Natural Sciences / DV Dvoeglazov http://www.rae.ru/meo/pdf/2010/01/2010-01-62.pdf.

3.Physical Layer Switches: MRV Communications, Inc., USA, 2010: http://www.mrv.com/tap/physical_layer.

4.Increase Device Utilization & Accelerate Product Time to Market / APCON, Inc., USA, 2010: http://www.apcon.com/solutions/test_lab.php.

5.Achieve increased utilization while saving time / OnPATH Technologies, USA, 2010: http://www.onpathtech.com/applications/Test_Lab_A utomation / index.aspx.

6.TesLA Standards / Test Lab Automation Alliance, USA: http://www.teslaalliance.org/standards.html.

SavandyukovI.M., PostgraduateMTUCI

Comparativeanalysis of the options for interaction with various SEO traffic OSS-systems

Abstract
Network managementis not possible without a large amount of computer equipment and specialized software. Software and hardware system that provides network management functions, is a set of different systems which are linked with each other and with relevant tasks. Adding the new system in this complex requires serious consideration of issues of cooperation in the design stage of the system. On the example of the introduction of traffic optimizer considers options for interaction between the new system and the different classes of systems that can be available from your service provider.

Keywords: OSS-systems, network management, traffic optimizer.

References
1.Enhanced telecom operations map (eTOM). The business process framework. For the information and communications services industry. Release 7.1.

2.Telecom application map. The OSS system landscape. Release 1.0.

3.Savandyukov IM Method for optimizing resources in optical networks with wave seal // T-Comm – Telecommunications and Transport, 2009. № 4. pp. 32-35.

4.IT Service Management. Introduction // M.: IT Expert, 2003. 228 p.

Petrov E.P., Petrov, I.E, Abaturov S.G.

Protectingmobile receivers with noise-like signals from powerful and harmonic interference

Abstract
We propose amethod of dealing with such powerful (PP) and the harmonic interference (SOEs) in the mobile (MS) noise-like signals (PNS) using adaptive receiver (PU) with a nonlinear filter (NF) synthesized for rapid detection and identification (search) SHPS, built on the recurrence of the pseudorandom sequence (PRS), a large period. It is shown that the presence of the input CP of several powerful PNS than useful, can be considered as PP, which improves reception suppression useful PNS. We propose a method of dealing with the PP in terms of the strong harmonic interference (GPO) and the white Gaussian noise (BGSH).

Keywords: protectionof receivers, noise-like signal, harmonic interference.

References
1.Borisov V.I.,  Zinchuk V.M., Limarev A.E., Mukhin N.P., Nakhmanson G.S. Immunity radio systems spread spectrum signal modulated carrier pseudo-random sequence. – Moscow Radio and Svyaz, 2003. 640 p.

2.ProzorovD.E., Petrov E.P. Quick Search noise-like signals. M.: On the short-, 2006. 216 p.

3.ChastikovA.V. Babintsev V.V. Petrov I.E. Nonlinear receiver for fast searching of binary CAP. Information management and processing // Sat. scientific papers VyatGU, 2000. Issue 4. pp.72-78.

4.ChastikovA.V. Block protection against such interference. Digital signal processing and its application // Proceedings of the 4th International Conference. – M.: 2002. pp.126-130.

5.ChastikovA.V., Petrov I.E. Study of the impact of narrowband interference on adaptive device search CAP / Science Manufacturing Technology Environment (Science-Protek-98): Kirov, 1998. Vol.1. pp. 92-93.

ShinakovY.S.,PhD, Head of Radio Systems MTUCI

BochechkaG.S.,PostgraduateMTUCI

Suppressionof phase noise OFDM system using a Kalman filter

Abstract
The performance of an OFDM system can be strongly degraded by the presence of random phase noise especially if a system design targets high data rates at high carrier frequencies. Phase noise causes constellation rotation, the so called common phase error, and intercarrier interference. In this paper we introduce a method for pilot based common phase error estimation using an extended Kalman filter. The performance of this method is investigated for OFDM system with the model of a radio channel recommended for standards IEEE 802.11 and HIPERLAN.

Keywords:phase noise, OFDM, Kalman filter, Wiener process.

References
1. D. Petrovic, W. Rave, and G. Fettweis. Phase noise suppression in OFDM using a Kalman filter. In Proc. IEEE WPMC. — Vol. 3. — pp. 375-379. Yokosuka, Japan, 19-22, October 2003.

2. A. Hajimiri, T. H. Lee. A General Theory of Phase Noise in Electrical Oscillators. IEEE J. Solid-State Circuits. —Vol. 33. — No 2. — pp. 179-194, February 1998.

3. A. Demir, A. Mehrotra, and J. Roychowdhury.Phase Noise in Oscillators: A Unifying Theory and Numerical Methods for Characterisation//IEEE Trans. Circuits Syst. I. — Vol. 47. —No 5, May 2000.

4.BochechkaG.S. Channel estimation techniques based on the embedded pilot signals in OFDM // T-Comm – Telecommunications and Transport, 2009. No3.pp. 38-42.

ZlobinV.A.,graduate Dept. RES, GOU VPO VyatkaState University, zlbinxxbasil@rambler.ru

Offsettime-frequency distributions for the existence of signals

Abstract
This paper considers of possibility of correcting the time_frequency data of time-frequency distribution. Some recommendations for choosing the kernel of distribution to which it is necessary to apply a reassignment method are made.

Keywords:time-frequency distribution, the core distribution, the signal method reassignment.

References
1.CohenL. Time-frequency distributions. Review // TIIAR, 1989. Vol. 77. No 10. pp. 72-120.

2. Signal Analysis: Wavelets, Filter Banks, Time-Frequency Transforms and Applications. Alfred Mertins. 1999 John Wiley & Sons Ltd, Print ISBN 0-71-98626-7, Electronic ISBN 0-470-84183-4.

3. Signal Analysis: Time, Frequency, Scale, and Structure. Ronald L. Allen and Duncan W. Mills. ISBN 0-471-23441-9.

4. D. J. Nelson. Cross_spectral methods for processing speech, Journal of the Acoustical Society of America, vol. 110, pp. 2575-2592, Nov. 2001.

5. Cohen L. Instantaneous frequency and time-frequency distributions / L. Cohen, C. Lee // IEEE Proc. Of ISCAS,1989. Vol. 2. pp. 1231-1234.

Stepanova I.V., Associate Professor of Automatic telecommunication MTUCI, 515iv@mail.ru

Pocrovskaya M.A.,graduate full-time study MTUCI

Forecasting methods andapproximations for multimedia contact center

Abstract
A distinctive feature of the modern contact center — is the ability to handle requests coming from a different intensity from sources of various types. To ensure the effective operation of the contact center must have the levels of effective management of its resources. One possible solution might be to use the approximation. In addition, the task of predicting Internet traffic can be solved using the method of neural network forecasting.

Keywords:contact center, a method of neural network forecasting, web traffic, approximation.

References
1. Mandelbaum A., Massey W.A. and Reiman M.I. (1998), Strong approximations for Markovian service networks,Queueing Systems: Theory and Applications (QUESTA) 30, 149-201.

2.Livshits K.I.,Shiferdeker I.Y. Diffusion approximation of the mathematical model of the non-profit foundation with the relay money management / / Bulletin of the Tbilisi State University in 2006. No 293. pp. 38-44.

3.RoslyakovA.V. A comparative analysis of mathematical models of call centers // Electrosvyaz, 2004. No 9. pp. 32-34.

4.OsovskiC. Neural networks for information processing. Moscow: Finance and Statistics, 2002. 344 p.

5.CallanR. Basic concepts of neural networks. Moscow: Publishing House “Williams”, 2001. 287 p.

Popov A.G., Ph.D., professor MTUCI, W515iv@mail.ru

ChanTuan Min, graduate student full-time study MTUCI

Features of the calculationof integrated call centers

Abstract
The rapid development of Internet network as a single transport to transfer any type of information alters the composition of consumers of telecommunications products. Integrated Service Centers calls focused on a wide range of service users, are used as a means of accessing personal computers and telephones to ensure receipt of information from operators of the center in a dialogue mode. Bandwidth points can be adjusted in various ways to improve the productivity of operator groups and ensuring user access to the services center with the lowest latency.

Keywords:information and referral system, the decomposition method, the discipline of service with the expectation algorithms call service features quality service.

References
1.Popov A.G., Chan Tuan Min. Methods of organization and calculation of information systems service call / / Proceedings MTUCI, 2007. pp. 77-82.

2.Popov A.G., Chan Tuan Min. Mathematical models for the design of call centers / / International Forum of Information (MFI-2008): Proceedings of the Conference “Telecommunications and Computer Systems.” M.: MTUCI, 2008. pp. 131-133.

3.GregLevine. Measure the quality of the contact center // Networks and Systems, 2007. No 9. pp. 20-26.

4.News from the “World of call-centers” // CONNECT!, 2007. No 4. pp. 26-28.

5.KeithDawson. IP-technology in the Call-center // Networks and Systems, 2007. No 4. pp. 56-59.

OlgaIvanova, Deputy Head of the Training Division MTUCI, ivolga07@gmail.com

Ivanov P.V.,MTUCI

Designof your mail system

Abstract
In the developmentof information systems should be aware that the role of man in the process of human-computer interaction, as one of the components of the total system, it becomes more and more important. This determines the direction of change in the technology of information processing, resulting in better use of computer systems with the industry specifics. Essential to work with information in a distributed business environment have intelligent interfaces.

Keywords: database, information flow, system verification records, intuitive interface.

References
1.BadgerI.V. The development of tools and technologies Postal: Manual. Moscow: MTUCI, 2001. 92 p.

2.Computers and information technology / / Tutorial, 2008. 592 p.

3.Semenov M.I., Trubilin I.T., Loyko V.I., Baranovskaya T.P. Automated information technology in the economy.Moscow: Finance and Statistics, 2002. 416 p.

4. http://www.osp.ru.

5. http://www.parus.ru.

6. http://www.galaktika.ru.

7. http://www.infin.ru.

8. http://www.1C.ru.

Device to protectLANs

Abstract
Questions of informational safety are considered during maintenance of local informational networks on objects of handle and a supply with information of trials at unauthorized access to carriers with the confidential information. The method of creation of impulse magnetic systems, and equipment for its implementation is offered. At the heart of equipment operation physical bases of magnetisation are put.

Keywords: Information protection, local area networks, magnetic media, the information eraser.

References
1. GerusS.V., Sokolov A.A., Mityagin A.Y., Khlopov B.V.Magnetic properties of materials used in the systems of external computer memory // International Scientific Conference, Sevastopol, October 2004. Proceedings of the International Scientific and Technical Conference Information Technologies in Science, Engineering and Education. Moscow, 2005. Vol. 111. pp.130-133.

2. Sokolov AA., Timiryazev M.P., Mityagin A.Y. Fesenko, M.V, Khlopov B.V.Investigation of the effect of pulsed magnetic fields to store information on your hard drive // Proceedings of the International Scientific Conference “High Technologies in Russia’s industry.” Moscow: JSC “TsNITI Technomash”, 2008. pp. 248-258.

3. Patent of Russian Federation № 2232435 from 10.07.2004

4. Patent of Russian Federation № 2321165 from 27.03.2008

5. Patent of Russian Federation № 2368019 from 20.09.2009

6. Lobanov BS, Pikul A.I., Khlopov B.V.Methods ofimproving the protection of the information stored in the hard disk drive // T-Comm – Telecommunications and Transport, 2009. No 4. pp. 8-13.

Korchagin S.I., head of “Security” MIPT (SU) system analysis, management and processing of information

Evaluating the effectiveness ofIR PPS within a probabilistic approach

Abstract
Probabilistic characteristicsof a violator, and their numerical values ??can be obtained by simulation models, which are mainly based on their geometrical interpretation. This can be of value for research on the effectiveness of integrated systems of physical protection systems (PPS IR) based on the selection of the most effective desired probability of correct detection.

Keywords: efficiency rating, simulation model, integrated systems, physical protection system.

References
1.Korchagin S.I., Leus, A.V., Pavlov V.G., Shanaev G.F. The procedure of optimizing the structure IKSFZ based on the selection of the most effective options // BIA Russian magazine about business security and identity, 2010.

2.Wentzel E.S. Probability theory and its engineering applications. M.: High School, 2000.

3.Chernorutskii I.G. Optimization techniques in control theory: the manual. St.: Peter, 2004. 256 p.

4.Labels M.S. Bogachev A.S., Mironov M.A. Operational use and efficiency of aircraft electronic systems. Acad VVIA them. NE Zhukovsky, 1990. pp. 127, 133.

5.Mikhailov B.A., Reutov A.P., Rybalov A.G. Aviation radioelectronic systems and their operation. Acad VVIA them. NE Zhukovsky, 1968.

6.Schneider V.E., Slutsky A.I, Shumov A.S. Short course of higher mathematics. M.: High School, 1978. Vol. 2. pp.82-90.

Kiselev I.V.,graduate MTUCI

Effect ofintelligent call routing on the functioning of Call-Centres

Abstract
Call-center — a hardware-software system equipment for the reception and service with operators of incoming calls arriving at the emergency, background, consulting, contract, technical and other services that use to provide services to clients resources telephone networks. The problem is that on certain days or at certain hours of the load may increase sharply. The problem is that on certain days or at certain hours of the load may increase sharply. It is proposed to introduce mutual aid, organizing an additional group of operators for the provision of reference services. The article presents the results of calculations of the capacity of call-centers, which can be realized by intelligent call routing to the operator group.

Keywords:call-center, emergency services, capacity, intelligent routing, mutual aid.

References
1.Solutions and services for contact centers. Materials ATM_GRUP, 2008. 39 p.

2.Kovaleva I.V. Future contact center ALCATEL-GENESYS // Electrosvyaz, 2007. No 11. pp.51-53.

3.Neiman V.I., Seleznev D.A. Further integration of networks and issues of quality telephone // Electrosvyaz, 2007. No 6. pp.38-41.

4.Brad Cleveland. 12 Features of Call-center, which is to know guide // Networks and Systems, 2007. No 4. pp.52-54.

5.Greg Levine. Measure the quality of the contact center // Networks and Systems, 2007. No 9. pp.20-26.