A Wireless Transmission Technique for Remote Monitoring and Recording System on Power Devices by GPRS Network
|
|
- Arline Roberts
- 5 years ago
- Views:
Transcription
1 Proceedings of the 6th WSEAS International Conference on Instruentation, Measureent, Circuits & Systes, Hangzhou, China, April 15-17, A Wireless Transission Technique for Reote Monitoring and Recording Syste on Power Devices by GPRS Network Cheng-Chien Kuo *Hong-Chan Chang *Fu-Hsien Chen Departent of Electrical Engineering, *Departent of Electrical Engineering, Saint John s University, National Taiwan University of Science and Technology, 499, Sec. 4, Ta King Road, Tasui, Taiwan. 43, Sec. 4, Keelung Road, Taipei, Taiwan. Abstract: - A reote onitoring and recording syste for power devices is developed in this paper. It ais at the application of the technology of wireless transission and signal processing in the transission of the signals of long-distance electric equipent to the central control station. The terinal visualizes its working states in pictorial syste and saves all the historical data into general database for the purpose of future research and exaination. Through this proposed syste, only requires a GPRS atching acquisition syste odule which enables the longdistance control center to acquire any signals of the equipent, so that overall supervision is attained. Meanwhile, the task of wire setting on rough landfor is avoided, and the tie to overhaul can be saved. In addition, by exaining the data record or analyzing the theoretically, we coe to know the perforance, life-span and operation efficiency of the equipent, so as to propose aintenance or replaceent, thus the traditional periodical aintenance progra is upgraded to a ore efficient conditional based one. When anything abnoral happened to the equipent, the syste can infor in advance the engineers concerned to repair it iediately or replace it, and reduces the occurrence of unexpected accidents. Key-Words: - Power Devices, General Packet Radio Service, Wireless Transission, Reote Monitoring. 1 Introduction Nowadays, electric power has becoe an indispensable energy source which is used so widely that it functions as a basic necessity of every walk of life. Regarding the electric facility, high profit is earned when everything works soothly, otherwise, work-line coes to a halt and results in decreasing output, in particular serious in the power industry. Provided that the power supply is cut, every sectors of the econoy will suffer huge losses. If any proble of the equipent is spotted in advance, we replace or repair it tiely, huge losses can be avoided. With technological advanceent of inforation and network, the electric supervisory syste, no longer confined to siply electric power utilization, can offer various services by onitoring the state of power consuing in an interactively way, so as to iprove the efficiency of overall power utilization. As to the current electric facilities, little tiely supervision and analysis of syste has been done. If we can ake an iediate analysis and supervision, we will get ore data, such as load curve, deand, peak load, fro which we can work out deand factor, load factor and diversity factor. Based on the data, we are able to ake an evaluation of our equipent, energy and utilizing efficiency. To ake sure the high security of electric operating syste, SCADA has been recoended by power firs across the world to acquire the data of electric working state, to control the switch device, and to supervise long-distance equipent, so that syste dispatchers are able to onitor the operating state of on-site equipent. SCADA coprises control center, on-site equipent and counication network, etc. Before the display of PC screen, the dispatcher can ake an analysis of any coing signals. When any abnoral data appears, the dispatcher does an iediate repair to avoid any ajor accidents to coe. On the basis of the highly developed obile counications era today [1,4], it is believed that the wireless transission platfor ay odify and iprove the cable transission disadvantages. The present day GPRS network syste has been established to a perfect level leading to the popular use of obile phones []. And GPRS network can have reliable way to transit data in addition to voice [3]. There already have any applications that apply the advantage of GPRS network to iprove the conventional uses [4-1]. Hence, this research designed a wireless real-tie onitoring feedback syste to connect the built-in GPRS odule, aking it possible to send back the onitoring data without aterial cabling between the onitored ends. The use of GPRS odule akes the onitoring coands and inforation observation not confined to a fixed point, enhancing the onitoring flexibility, convenience and reliability. Therefore, this
2 Proceedings of the 6th WSEAS International Conference on Instruentation, Measureent, Circuits & Systes, Hangzhou, China, April 15-17, research applied GPRS in collecting electric power data to further achieve the onitoring purpose, and developed a set of GPRS reote onitoring equipent that ainly onitor the relevant electric data at the onitored ends including the three-phase voltage rs value, electric current, and electric power. In addition, inforation on the statuses of power source over voltage, under voltage, over current and power status are fed back to the far-located onitoring end by GPRS. D. Host end onitoring: Utilize Visual Basic as the onitoring progra of Host end to revert the received data to its original wavefor, and then to work out various data after calculation, so as to coe to know the state of longdistance equipent. Software and Hardware Prograing This section is to elaborate on the syste structure and the design procedures of relevant hardware and software. The syste structure is as shown in Fig. 1. Install the GPRS reote onitoring device developed in this research at the onitored station. The device collects the inforation on electric voltage and current with its power calculated. And the onitoring data collected can be sent fro the GPRS odules at the onitored end to the central station with internet of the far onitoring end by GPRS network syste. Fig.. Syste Structure Fig. 1. GPRS reote onitoring syste structure.1 Fraework of the Syste The syste is ade of four parts as describing below and shown in Fig. including: electric signal processing, signal sapling, GPRS transission and Host end onitoring. A. Electric signal processing: Utilize siple circuit to ake soe proportional processing of signals, and then copare the siulated with the actualized, after that, ake soe odification to ake sure the circuit useable. B. Signal sapling: Utilize single chip to saple the voltage, current and phase signal, and to do soe calculation of data out of the saples. C. GPRS transission: Make use of the atch of Yi Yang s GPRS Module with single chip, and utilize AT coand to control the online and data transission by RS-3 transission technique.. Function of the Syste The ain functions of this syste can be divided as two parts. The first one is to onitor the equipents and transit back the relative paraeters. The second function is to analysis the received data for further uses as stated below. A. Monitor the data of electric equipent: We can collect the voltage and current data fro onitored equipents, and transitted the data to the long-distance PC by GPRS. When receiving the data, the PC saves it into database and visualizes its wavefor. At the sae tie we can calculate the data and get the power consued by the electric equipent concerned. B. Analyze the received data: We also can collect data fro any equipents, and then ake a coparison. For instance, we can calculate out the loss in the transission, through which, if anything abnoral, we can infor in advance the engineer to do a repair and aintenance.
3 Proceedings of the 6th WSEAS International Conference on Instruentation, Measureent, Circuits & Systes, Hangzhou, China, April 15-17, The Principiu and Method of the Design.3.1 Signal Processing A. Voltage The power voltage of equipents is an AC large signal that is not suitable for A/D converter and GPRS transission. We utilize ceent resistance divider to drop the voltage around the range about.5v. Then we use adder circuit to raise the AC voltage level for.5v, such that the V ax is around 5V and DC value, and then the signal can be sent to ADC for conversions. B. Current As to the current, through current transforer (CT we dwindles the current in proportion. Then we connect in serial the current with a resistance, and then we utilize a reverse aplifier and an adder to aplify its voltage and ake a level shift, after that send the signal to the ADC for a conversion..3. Phase Difference Let V = V cos( ω t +θ1 and I = I cos( ω t +θ Using ultiplier to set the product of V and I then : = VI = V I cos( ω t + θ1 cos( ωt + θ V = I [cos( ωt + θ1 + θ + cos( θ1 θ ] VI VI = cos(ωt + θ1 + θ + cos( θ1 θ AC ter DC ter The AC ter will only have an offset affected by DC value at this oent as shown in Fig. 6. It is very easy to find the av through ax and in : ax + in av = (1 V I av = cos( θ1 θ V We using a hardware chip (AD633 to produce the signal of ultiplication of V and I, such that the av can be find according to (1. Therefore, the phase difference between V and I can be find as below: av θ = θ = cos 1 1 θ ( VI.3.3 Saple In signal sapling, the ADC0809 cobined with 884A is utilized to convert analog to digital. In here, 884A offers 1.MHZ clock for ADC0809 so that it can work soothly. It takes about 10 clock for each saple point of ADC0809 to ake the conversion, 1 1.MHz 10 = 8.33μs, together with 30 μs, delay of progra, the sapling frequency is about 4.KHz. Therefore, sapling 60Hz power signal in such a anner also accords with Nyquist sapling theore f p f s, and this won t bring about aliasing phenoenon. ADC0809 utilize its fraework to switchover between 8 analog channels for 8bit conversion. The signal of voltage, current and phase difference is input to connector V REF ( + to +5V, and V REF ( to GND. Since V REF is 5V, and the resolution of ADC is 8bit, 56 levels is set. Its 8 step voltage = 5V ( 1 = V. Then the START and ALU of ADC chip are triggered, so that the conversion is activated, and after conversion, the converted data is acquired in the anner of interrupt. Surely, to ake ADC0809 work, clock should be provided. In this design, it is ADC0809 that offers the clock, aided by 7. MHZ crystal oscillator; 884A divides by 6. Finally 1.MHZ clock is obtained by PCLK. V 0V Frequency=60Hz t ax - V I av I in 0 t Frequency= 60Hz 0 Frequency=10Hz t - I Fig. 6. The wavefor after the product of voltage and current
4 Proceedings of the 6th WSEAS International Conference on Instruentation, Measureent, Circuits & Systes, Hangzhou, China, April 15-17, Microprocessor is utilized here to acquire the signal of 70 sapling points, and then GPRS is applied to transit the data to long-distance supervisory syste, where linear interpolation is eployed to revert the data to its original signal..3.4 The Connection of 89C5 with GPRS Module In the application of GPRS odule and 89C5, 89C5 is utilized in this paper to give AT Coand to control GPRS odule through RS-3, so that GPRS can connect to the network to transit the data. To get GPRS Module to transit signal soothly, AT Coand is utilized here..3.5 Power Calculation After calculating the data obtained in sapling, we get V I and θ, with which we work out for the forula P = V I cosθ. Then the power is easily got. 3 Ipleentation Three parts to be discussed here: 3.1 Voltage acquisition In this part, as shown in Fig. 8, we decrease the voltage to -.5V~+.5V as shown in upper portion of Fig. 8, but the sapling scope of ADC0809 is confined to positive value (0V~5V. Therefore, we ake a slight adjustent of the voltage, which is done in the lower part of Fig. 8. In this process, we use the IC as TL084. The U1 is the buffer added to prevent the interference between the front and back voltage. The U is the noninverted adder to raise its voltage; it is designed according the following procedure. Assue the point 3 of U is V A, the output of U1 is point 6 denoted as V i, V o is the output of U placed in point 6 R=1k,R7=R8=R9=R,R5=R6=R VA 5 VA 0 VA Vi + + = 0 R R R V A 5 + VA + V A Vi = 0 4 V A = Vi V A = Vi R 1 V o = ( 1+ VA = (1 + 1 ( Vi = Vi +.5 R After passing U, the level of voltage V i (-.5V~+.5V rises by.5v, thus the V o scope is expanded between 0V~5V. After such adjustent, ADC0809 is well prepared for voltage value. 3. Current conversion As shown in Fig. 9 is the current conversion circuit. When collecting real signal saple of voltage and current, we connect the equipent to 110V voltage, R3(1k in serial, LOAD and CT. R3 is set to prevent excessive short-circuit current; LOAD is set to detect the state of voltage and current value for a easy exaination, which is also the purpose of our experient; CT is set for two exaination: the first one is to easure the current passing the LOAD, and the second one is to transfor the current inducted into the voltage wavefor through R4(9.9K. The voltage of R1 and R falls into 110V, close to the voltage for LOAD. For a convenient detecting, we divide the 110V so that the voltage falls into the scope (-.5V~+.5V, convenient for its analysis to coe. Fig. 9. Current transfor by CT 3.3 Current acquisition As shown in Fig. 10 is the current acquisition circuit. The current value has been inducted fro priary to secondary through CT in part. Next, the current value is transfored into the voltage through R4. Since the current is transfor to secondary, due to the turn ratio, the previous big current is converted into sall one, the value inducted in easureent is even sall. For a convenient easureent, we utilize a reverse aplifier (U3, whose rate is R11: R10 => 31.5 ties, to aplify the voltage to the scope, -.5V~+.5V. After that, by the eans of voltage acquisition, we utilize a nonreverse adder (U4 to adjust the voltage to 0V~5V, convenient for ADC0809 to receive.
5 Proceedings of the 6th WSEAS International Conference on Instruentation, Measureent, Circuits & Systes, Hangzhou, China, April 15-17, Fig. 8. Voltage acquisition circuit diagra Fig. 10. Current acquisition circuit diagra 3.4 Phase Process The ultiplier circuit of voltage and current is shown in Fig. 11. Using the product of voltage and current to get the phase difference Fig. 11. ultiplier circuit of voltage and current For exaple: The input value are V =.5cos( ω t + 45, I =.5 cos( ω t + 30 Suppose the angle of voltage and current are θ 1 and θ, respectively. = VI =.5.5cos( ω t + θ1 cos( ωt + θ 6.5 = [cos(ωt + θ1 + θ + cos( θ1 θ ] = 3.15 cos(ωt + θ1 + θ cos( θ1 θ the angle θ can be calculated by the DC ter that is the ean value of the wavefor. av = 3.07 av = 3.15 cos( θ1 θ = θ = θ = cos 1 1 θ = Then, the phase difference of voltage and current can be found. 4. Future Developent and Application The syste can be applied in the supervision of electric equipents, which not only saves labor cost, but also obtains the signal of equipent tiely. The
6 Proceedings of the 6th WSEAS International Conference on Instruentation, Measureent, Circuits & Systes, Hangzhou, China, April 15-17, syste can be established in every circuitry to onitor the state of equipents and then transit their signal for analysis. Apart fro analyzing the current state of the equipent concerned, the syste can utilize its database to copare the state of all equipents to deterine if anything needs to be iproved and coe to know the life-span of the equipent, etc. This not only axiizes the perforance of all the equipent, but also iniizes the occurrence of accidents. In addition to siple signal transission, GPRS is very convenient for the local end or the Host end, convenient for a setup and easy for aateurs to operate. The developent of long-distance electric supervisory syste, based on GPRS transission, is proising. Hence, future research shall focus on an autoatic control of the supervisory syste, which can autoatically control the state of long-distance equipent with the result obtained fro analyzing the signal. The syste is expected to coe into factory, copany and even residence for a long-distance supervision, so as to bring security and efficient supervision everywhere. 5 Conclusion The developent of wireless counications has been iproving and enhancing the reote onitoring technology. It is an iportant link of the reote onitoring technology to transit data or control coands accurately and quickly between the onitoring end and the controlled end. In this paper, a wireless transission through GPRS network for power equipents onitoring and controlling syste is ipleented. The GPRS schee is used in the proposed transission structure and shows a good perforance in the real application. The presented devices for reote onitoring and controlling are tested under Taiwan Power Copany with rather encouraging results. It shows the ability for future technique in wireless onitoring of power equipents. 6 Acknowledgent Support for this research by the National Science Council of the Republic of China under Grant No. NSC 94-6-E CC3 is gratefully acknowledged. References [1] Scanaill C.N., Ahearne B., Lyons G.M., Long-ter Teleonitoring of Mobility Trends of Elderly People Using SMS Messaging, IEEE Transactions on Inforation Technology in Bioedicine, Vol.10, No., 006, pp [] Jeong-Hyun Park, Wireless Internet Access of The Visited Mobile ISP Subscriber on GPRS/UMTS Network, IEEE Transactions on Consuer Electronics, Vol.49, No.1, 003, pp [3] Wilson, A.J., The Use of GPRS Technology for Electricity Network Tele-Control, Journal of Coputing & Control Engineering, Vol.16, No., 005, pp [4] Salkintzis A.K., Fors C., Pazhyannur R., WLAN-GPRS Integration for Next-Generation Mobile Data Networks, IEEE Transactions on Wireless Counications, Vol.9, No.5, 00, pp [5] Caacho G., Alducin G., Gutierrez J., Miranda J.C., Software Developent for Local Data Transfer for Mobile Applications Using GPS and GPRS Technology, The 16th International Conference on Electronics, Counications and Coputers, 006. CONIELECOMP, 006, pp [6] Talledo Vilela J.P., Miranda Valenzuela J.C., Wireless Sensor Network and Reote Data Acquisition Syste for Mobile Applications, The 16th International Conference on Electronics, Counications and Coputers, 006. CONIELECOMP, 006, pp [7] Hongliang Zhou, GPRS Based Power Quality Monitoring Syste, 005 IEEE Proceedings on Networking, Sensing and Control, 005, pp [8] Talledo J.P., Miranda J.C., Design of a Multiple-Point Wireless Reote Data Acquisition Syste for Mobile Applications, The 16th International Conference on Electronics, Counications and Coputers, 006. CONIELECOMP, 006, pp [9] Vilela, J.P.T.; Valenzuela, J.C.M.; Design and ipleentation of a wireless reote data acquisition syste for obile applications, 5th International Workshop on Design of Reliable Counication Networks, 005. (DRCN 005, Oct. 005, pp. 8. [10] Al-Baker O., Benlari R., Al-Qayedi A., A GPRS- Based Reote Huan Face Identification Syste for Handheld Devices, International Conference on Wireless and Optical Counications Networks, 005. WOCN, 005, pp [11] Rashid O., Coulton P., Ahed H., Khirallah C., Live Inforation Update Services Over GPRS, International Conference on Inforation and Counication Technologies: Fro Theory to Applications, 004, 004, pp [1] Druea A., Svasta P., Popescu C., Reote Access Solutions for Industrial Control Systes, 7th International Spring Seinar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 004. Vol.1, 004. pp
Experiment 7: Frequency Modulation and Phase Locked Loops October 11, 2006
Experient 7: Frequency Modulation and Phase ocked oops October 11, 2006 Frequency Modulation Norally, we consider a voltage wave for with a fixed frequency of the for v(t) = V sin(ω c t + θ), (1) where
More informationELEC2202 Communications Engineering Laboratory Frequency Modulation (FM)
ELEC Counications Engineering Laboratory ---- Frequency Modulation (FM) 1. Objectives On copletion of this laboratory you will be failiar with: Frequency odulators (FM), Modulation index, Bandwidth, FM
More informationSECURITY AND BER PERFORMANCE TRADE-OFF IN WIRELESS COMMUNICATION SYSTEMS APPLICATIONS
Latin Aerican Applied Research 39:187-192 (2009) SECURITY AND BER PERFORMANCE TRADE-OFF IN WIRELESS COMMUNICATION SYSTEMS APPLICATIONS L. ARNONE, C. GONZÁLEZ, C. GAYOSO, J. CASTIÑEIRA MOREIRA and M. LIBERATORI
More informationPower Improvement in 64-Bit Full Adder Using Embedded Technologies Er. Arun Gandhi 1, Dr. Rahul Malhotra 2, Er. Kulbhushan Singla 3
Power Iproveent in 64-Bit Full Adder Using Ebedded Technologies Er. Arun Gandhi 1, Dr. Rahul Malhotra 2, Er. Kulbhushan Singla 3 1 Departent of ECE, GTBKIET, Chhapianwali Malout, Punjab 2 Director, Principal,
More informationA New Localization and Tracking Algorithm for Wireless Sensor Networks Based on Internet of Things
Sensors & Transducers 203 by IFSA http://www.sensorsportal.co A New Localization and Tracking Algorith for Wireless Sensor Networks Based on Internet of Things, 2 Zhang Feng, Xue Hui-Feng, 2 Zhang Yong-Heng,
More informationSecondary-side-only Simultaneous Power and Efficiency Control in Dynamic Wireless Power Transfer System
069060 Secondary-side-only Siultaneous Power and Efficiency Control in Dynaic Wireless Power Transfer Syste 6 Giorgio ovison ) Daita Kobayashi ) Takehiro Iura ) Yoichi Hori ) ) The University of Tokyo,
More informationRelation between C/N Ratio and S/N Ratio
Relation between C/N Ratio and S/N Ratio In our discussion in the past few lectures, we have coputed the C/N ratio of the received signals at different points of the satellite transission syste. The C/N
More informationACCURATE DISPLACEMENT MEASUREMENT BASED ON THE FREQUENCY VARIATION MONITORING OF ULTRASONIC SIGNALS
XVII IMEKO World Congress Metrology in 3rd Millenniu June 22 27, 2003, Dubrovnik, Croatia ACCURATE DISPLACEMENT MEASUREMENT BASED ON THE FREQUENCY VARIATION MONITORING OF ULTRASONIC SIGNALS Ch. Papageorgiou
More informationEnergy-Efficient Cellular Communications Powered by Smart Grid Technology
Energy-Efficient Cellular Counications Powered by Sart Grid Technology Itiaz Nasi, Mostafa Zaan Chowdhury, and Md. Syadus Sefat Departent of Electrical and Electronic Engineering Khulna University of Engineering
More informationPrecise Indoor Localization System For a Mobile Robot Using Auto Calibration Algorithm
Precise Indoor Localization Syste For a Mobile Robot Using Auto Calibration Algorith Sung-Bu Ki, JangMyung Lee, and I.O. Lee : Pusan National University, http://robotics.ee.pusan.ac.r, : Ninety syste Abstract:
More informationKeywords: International Mobile Telecommunication (IMT) Systems, evaluating the usage of frequency bands, evaluation indicators
2nd International Conference on Advances in Mechanical Engineering and Industrial Inforatics (AMEII 206) Entropy Method based Evaluation for Spectru Usage Efficiency of International Mobile Telecounication
More informationA NEW APPROACH TO UNGROUNDED FAULT LOCATION IN A THREE-PHASE UNDERGROUND DISTRIBUTION SYSTEM USING COMBINED NEURAL NETWORKS & WAVELET ANALYSIS
A NEW APPROACH TO UNGROUNDED FAULT LOCATION IN A THREE-PHASE UNDERGROUND DISTRIBUTION SYSTEM USING COMBINED NEURAL NETWORKS & WAVELET ANALYSIS Jaal Moshtagh University of Bath, UK oshtagh79@yahoo.co Abstract
More informationANALOGUE & DIGITAL COMMUNICATION
1 ANALOGUE & DIGITAL COMMUNICATION Syed M. Zafi S. Shah & Uair Mujtaba Qureshi Lectures 5-6: Aplitude Modulation Part 1 Todays topics Recap of Advantages of Modulation Analog Modulation Defining Generation
More informationDesign and Implementation of Serial Port Ultrasonic Distance Measurement System Based on STC12 Jian Huang
International Conference on Education, Manageent and Coputer Science (ICEMC 2016) Design and Ipleentation of Serial Port Ultrasonic Distance Measureent Syste Based on STC12 Jian Huang Xijing University,
More informationDSI3 Sensor to Master Current Threshold Adaptation for Pattern Recognition
International Journal of Signal Processing Systes Vol., No. Deceber 03 DSI3 Sensor to Master Current Threshold Adaptation for Pattern Recognition David Levy Infineon Austria AG, Autootive Power Train Systes,
More informationNotes on Orthogonal Frequency Division Multiplexing (OFDM)
Notes on Orthogonal Frequency Division Multiplexing (OFDM). Discrete Fourier ransfor As a reinder, the analytic fors of Fourier and inverse Fourier transfors are X f x t t, f dt x t exp j2 ft dt (.) where
More informationRAKE Receiver. Tommi Heikkilä S Postgraduate Course in Radio Communications, Autumn II.
S-72333 Postgraduate Course in Radio Counications, Autun 2004 1 RAKE Receiver Toi Heikkilä toiheikkila@teliasoneraco Abstract RAKE receiver is used in CDMA-based (Code Division Multiple Access) systes
More informationAdaptive Harmonic IIR Notch Filter with Varying Notch Bandwidth and Convergence Factor
Journal of Counication and Coputer (4 484-49 doi:.765/548-779/4.6. D DAVID PUBLISHING Adaptive Haronic IIR Notch Filter with Varying Notch Bandwidth and Convergence Factor Li Tan, Jean Jiang, and Liango
More informationA State-of-the-Art PMU and MATLAB Based GUI Development towards Power System State Estimation on Real Time Basis
I J E E E International Journal of Electrical, Electronics ISSN No. (Online) : 77-66 and oputer Engineering (): 40-45(0) Special Edition for Best Papers of Michael Faraday IET India Suit-0, MFIIS- State-of-the-rt
More informationAdditive Synthesis, Amplitude Modulation and Frequency Modulation
Additive Synthesis, Aplitude Modulation and Frequency Modulation Pro Eduardo R Miranda Varèse-Gastproessor eduardo.iranda@btinternet.co Electronic Music Studio TU Berlin Institute o Counications Research
More informationPart 9: Basic AC Theory
Part 9: Basic AC Theory 9.1 Advantages Of AC Systes Dealing with alternating current (AC) supplies is on the whole ore coplicated than dealing with DC current, However there are certain advantages of AC
More informationEXPERIMENTATION FOR ACTIVE VIBRATION CONTROL
CHPTER - 6 EXPERIMENTTION FOR CTIVE VIBRTION CONTROL 6. INTRODUCTION The iportant issues in vibration control applications are odeling the sart structure with in-built sensing and actuation capabilities
More informationKalman Filtering for NLOS Mitigation and Target Tracking in Indoor Wireless Environment
16 Kalan Filtering for NLOS Mitigation and Target Tracking in Indoor Wireless Environent Chin-Der Wann National Sun Yat-Sen University Taiwan 1. Introduction Kalan filter and its nonlinear extension, extended
More informationUNIT - II CONTROLLED RECTIFIERS (Line Commutated AC to DC converters) Line Commutated Converter
UNIT - II CONTROLLED RECTIFIERS (Line Coutated AC to DC converters) INTRODUCTION TO CONTROLLED RECTIFIERS Controlled rectifiers are line coutated ac to power converters which are used to convert a fixed
More informationDIGITAL Communications
DIGITAL Counications Contents Introduction to Counication Systes Analogue Modulation AM, DSBSC, SB, SSB, FM, PM, Narrow band FM, PLL Deodulators, and FLL Loops Sapling Systes Tie and Frequency Division
More informationLOW COST PRODUCTION PHASE NOISE MEASUREMENTS ON MICROWAVE AND MILLIMETRE WAVE FREQUENCY SOURCES
Page 1 of 10 LOW COST PRODUCTION PHASE NOISE MEASUREMENTS ON MICROWAVE AND MILLIMETRE WAVE FREQUENCY SOURCES Hugh McPherson Spectral Line Systes Ltd, Units 1,2&3 Scott Road, Tarbert, Isle of Harris. www.spectral-line-systes.co.uk
More informationAn improved Active Islanding Detection Technology for Grid-connected Solar Photovoltaic System
An iproved Active Islanding Detection Technology for Grid-connected Solar Photovoltaic Syste H. T. Yang, P. C. Peng, T. Y. Tsai, and Y. Y. Hong Abstract--Solar photovoltaic (PV) generation has drawn ore
More informationEvaluation of Steady-State and Dynamic Performance of a Synchronized Phasor Measurement Unit
01 IEEE Electrical Power and Energy Conference Evaluation of Steady-State and Dynaic Perforance of a Synchronized Phasor Measureent Unit Dinesh Rangana Gurusinghe, Graduate Student Meber, IEEE, Athula
More informationCOMPARISON OF TOKEN HOLDING TIME STRATEGIES FOR A STATIC TOKEN PASSING BUS. M.E. Ulug
COMPARISON OF TOKEN HOLDING TIME STRATEGIES FOR A STATIC TOKEN PASSING BUS M.E. Ulug General Electric Corporate Research and Developent Schenectady, New York 1245 ABSTRACT Waiting ties have been calculated
More informationAllocation of Multiple Services in Multi-Access Wireless Systems
Allocation of Multiple Serices in Multi-Access Wireless Systes Anders Furuskär Wireless@KTH, Royal Institute of Technology, Sweden and Ericsson Research anders.furuskar@era.ericsson.se Abstract This paper
More informationImplementation of Adaptive Viterbi Decoder
Ipleentation of Adaptive Viterbi Decoder Devendra Made #1 VIII Se B.E.(Etrx) K.D.K.College of Engineering, Nagpur, Maharashtra(I) Asst. Prof. R.B. Khule *2 M.Tech V.L.S.I. K.D.K.College of Engineering,
More informationNew Adaptive Linear Combination Structure for Tracking/Estimating Phasor and Frequency of Power System
28 Journal of Electrical Engineering & echnology Vol. 5, No., pp. 28~35, 2 New Adaptive Linear Cobination Structure for racking/estiating Phasor and Frequency of Power Syste Choowong-Wattanasakpubal and
More informationR&S IMS Hardware Setup according IEC / EN (radiated immunity) Products: R&S IMS, R&S NRP-Z91, HL046E. Application Note
Products: R&S, R&S NRP-Z91, HL046E R&S Hardware Setup according IEC / EN 61000-4-3 (radiated iunity) Application Note This application note describes the general setup and required equipent for EMC easureents
More informationResearch Article Novel Design for Reduction of Transformer Size in Dynamic Voltage Restorer
Research Journal of Applied Sciences, Engineering and Technology 8(19): 057-063, 014 DOI:10.1906/rjaset.8.1198 ISSN: 040-7459; e-issn: 040-7467 014 Maxwell Scientific Publication Corp. Subitted: April
More informationA HIGH POWER FACTOR THREE-PHASE RECTIFIER BASED ON ADAPTIVE CURRENT INJECTION APPLYING BUCK CONVERTER
9th International onference on Power Electronics Motion ontrol - EPE-PEM Košice A HIGH POWER FATOR THREE-PHASE RETIFIER BASE ON AAPTIVE URRENT INJETION APPYING BUK ONVERTER Žarko Ja, Predrag Pejović EE
More informationTransmit Power and Bit Allocations for OFDM Systems in a Fading Channel
Transit Power and Bit Allocations for OFD Systes in a Fading Channel Jiho Jang *, Kwang Bok Lee, and Yong-Hwan Lee * Sasung Electronics Co. Ltd., Suwon P.O.Box, Suwon-si, Gyeonggi-do 44-74, Korea School
More informationImpact of the Reactive Power Compensation on Harmonic Distortion Level
pact of the Reactive Power Copensation on Haronic Distortion Level J. A. M. eto,. C. Jesus, L. L. Piesanti Departaento de Tecnologia Universidade Regional do oroeste do Estado do Rio Grande do Sul juí
More informationOverlapped frequency-time division multiplexing
April 29, 16(2): 8 13 www.sciencedirect.co/science/journal/158885 he Journal of China Universities of Posts and elecounications www.buptjournal.cn/xben Overlapped frequency-tie division ultiplexing JIANG
More informationEQUALIZED ALGORITHM FOR A TRUCK CABIN ACTIVE NOISE CONTROL SYSTEM
EQUALIZED ALGORITHM FOR A TRUCK CABIN ACTIVE NOISE CONTROL SYSTEM Guangrong Zou, Maro Antila, Antti Lanila and Jari Kataja Sart Machines, VTT Technical Research Centre of Finland P.O. Box 00, FI-0 Tapere,
More informationINTERNATIONAL TELECOMMUNICATION UNION
INTERNATIONAL TELECOMMUNICATION UNION ITU-T J.133 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (07/2002) SERIES J: CABLE NETWORKS AND TRANSMISSION OF TELEVISION, SOUND PROGRAMME AND OTHER MULTIMEDIA
More informationELECTROMAGNETIC COVERAGE CALCULATION IN GIS
ELECTROMAGNETIC COVERAGE CALCULATION IN GIS M. Uit Guusay 1, Alper Sen 1, Uut Bulucu 2, Aktul Kavas 2 1 Yildiz Technical University, Departent of Geodesy and Photograetry Engineering, Besiktas, Istanbul,
More informationCompensated Single-Phase Rectifier
Copensated Single-Phase Rectifier Jānis DoniĦš Riga Technical university jdonins@gail.co Abstract- Paper describes ethods of rectified DC pulsation reduction adding a ensation node to a single phase rectifier.
More informationThe PAPR and Simple PAPR Reduction of the 2D Spreading Based Communication Systems
RADIOENGINEERING, VOL. 9, NO., APRIL 7 The PAPR and Siple PAPR Reduction of the D Spreading Based Counication Systes Jiří BLUMENSTEIN, Zbyněk FEDRA Dept. of Radio Electronics, Brno University of Technology,
More informationTESTING OF ADCS BY FREQUENCY-DOMAIN ANALYSIS IN MULTI-TONE MODE
THE PUBLISHING HOUSE PROCEEDINGS OF THE ROMANIAN ACADEMY, Series A, OF THE ROMANIAN ACADEMY Volue 5, Nuber /004, pp.000-000 TESTING OF ADCS BY FREQUENCY-DOMAIN ANALYSIS IN MULTI-TONE MODE Daniel BELEGA
More informationDesign of Efficient ZVS Half-Bridge Series Resonant Inverter with Suitable Control Technique
Harish Vegola et al. Int. Journal of Engineering Research and Application RESEARCH ARTICLE OPEN ACCESS Design of Efficient ZVS Half-Bridge Series Resonant Inverter with Suitable Control Technique Harish
More informationPerformance Analysis of an AMC System with an Iterative V-BLAST Decoding Algorithm
I. J. Counications, Network and Syste Sciences, 008,, 105-06 Published Online May 008 in SciRes (http://www.srpublishing.org/journal/ijcns/). Perforance Analysis of an AMC Syste with an Iterative V-BLAST
More informationAn orthogonal multi-beam based MIMO scheme. for multi-user wireless systems
An orthogonal ulti-bea based IO schee for ulti-user wireless systes Dong-chan Oh o and Yong-Hwan Lee School of Electrical Engineering and IC, Seoul ational University Kwana P.O. Box 34, Seoul, 151-600,
More informationECE 6560 Multirate Signal Processing Analysis & Synthesis Notes
Multirate Signal Processing Analysis & Synthesis Notes Dr. Bradley J. Bazuin Western Michigan University College of Engineering and Applied Sciences Departent of Electrical and Coputer Engineering 1903
More informationWe are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists. International authors and editors
We are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists 3,900 116,000 10M Open access books available International authors and editors Downloads Our authors
More informationAlternative Encoding Techniques for Digital Loudspeaker Arrays
Alternative Encoding Techniques for Digital Loudspeaer Arrays Fotios Kontoichos, Nicolas Alexander Tatlas, and John Mourjopoulos Audio and Acoustic Technology Group, Wire Counications Laboratory, Electrical
More informationParameter Identification of Transfer Functions Using MATLAB
Paraeter Identification of Transfer Functions Using MATLAB Mato Fruk, Goran Vujisić, Toislav Špoljarić Departent of Electrical Engineering The Polytechnic of Zagreb Konavoska, Zagreb, Croatia ato.fruk@tvz.hr,
More informationTransmit Beamforming and Iterative Water-Filling Based on SLNR for OFDMA Systems
Transit Beaforing and Iterative Water-Filling Based on SLNR for OFDMA Systes Kazunori Hayashi, Megui Kaneko, Takeshi Fui, Hideaki Sakai Graduate School of Inforatics, Kyoto University, Yoshida Honachi
More informationHIGH FREQUENCY LASER BASED ACOUSTIC MICROSCOPY USING A CW GENERATION SOURCE
HIGH FREQUENCY LASER BASED ACOUSTIC MICROSCOPY USING A CW GENERATION SOURCE T.W. Murray, O. Balogun, and N. Pratt Departent of Aerospace and Mechanical Engineering, Boston University, Boston MA 0225 Abstract:
More informationDetection of Faults in Power System Using Wavelet Transform and Independent Component Analysis
Detection of Faults in Power Syste Using Wavelet Transfor and Independent Coponent Analysis 1 Prakash K. Ray, 2 B. K. Panigrahi, 2 P. K. Rout 1 Dept. of Electrical and Electronics Engineering, IIIT, Bhubaneswar,
More informationSession Eleven: An On-Line Technique to Detect Winding Deformation within Power Transformers
Session Eleven: An On-Line Technique to Detect Winding Deforation within Power Transforers A. Abu-Siada Senior Lecturer, Curtin University Abstract Frequency Response Analysis (FRA) has been growing in
More informationRobust Acceleration Control of Electrodynamic Shaker Using µ Synthesis
Proceedings of the 44th IEEE Conference on Decision and Control, and the European Control Conference 5 Seville, Spain, Deceber -5, 5 WeIC8. Robust Acceleration Control of Electrodynaic Shaker Using µ Synthesis
More informationAccuBridge TOWARDS THE DEVELOPMENT OF A DC CURRENT COMPARATOR RATIO STANDARD
AccuBridge TOWARD THE DEVELOPMENT OF A DC CURRENT COMPARATOR RATO TANDARD Duane Brown,Andrew Wachowicz, Dr. hiping Huang 3 Measureents nternational, Prescott Canada duanebrown@intl.co, Measureents nternational,
More informationPerformance Evaluation of UWB Sensor Network with Aloha Multiple Access Scheme
1 Perforance Evaluation of UWB Sensor Network with Aloha Multiple Access Schee Roeo Giuliano 1 and Franco Mazzenga 2 1 RadioLabs Consorzio Università Industria, Via del Politecnico 1, 00133, Roe, Italy,
More informationStudy and Implementation of Complementary Golay Sequences for PAR reduction in OFDM signals
Study and Ipleentation of Copleentary Golay Sequences for PAR reduction in OFDM signals Abstract In this paper soe results of PAR reduction in OFDM signals and error correction capabilities by using Copleentary
More informationNew Characteristics Analysis Considering Transmission Distance and Load Variation in Wireless Power Transfer via Magnetic Resonant Coupling
New Characteristics nalysis Considering Transission Distance and oad Variation in Wireless Power Transfer via Magnetic Resonant Coupling Masaki Kato, Takehiro ura, Yoichi Hori The Departent of dvanced
More informationA Robust Scheme for Distributed Control of Power Converters in DC Microgrids with Time-Varying Power Sharing
A Robust Schee for Distributed Control of Power Converters in DC Microgrids with Tie-Varying Power Sharing Mayank Baranwal,a, Alireza Askarian,b, Srinivasa M. Salapaka,c and Murti V. Salapaka,d Abstract
More informationPOWER QUALITY ASSESSMENT USING TWO STAGE NONLINEAR ESTIMATION NUMERICAL ALGORITHM
POWER QUALITY ASSESSENT USING TWO STAGE NONLINEAR ESTIATION NUERICAL ALGORITH Vladiir Terzia ABB Gerany vadiir.terzia@de.abb.co Vladiir Stanoevic EPS Yugoslavia vla_sta@hotail.co artin axiini ABB Gerany
More informationIncorporating Performance Degradation in Fault Tolerant Control System Design with Multiple Actuator Failures
International Incorporating Journal Perforance of Control, Degradation Autoation, in and ault Systes, Tolerant vol. Control, no. Syste, pp. 7-, Design with June Multiple Actuator ailures 7 Incorporating
More informationFundamental study for measuring microflow with Michelson interferometer enhanced by external random signal
Bulletin of the JSME Journal of Advanced Mechanical Design, Systes, and Manufacturing Vol.8, No.4, 2014 Fundaental study for easuring icroflow with Michelson interferoeter enhanced by external rando signal
More informationL It indicates that g m is proportional to the k, W/L ratio and ( VGS Vt However, a large V GS reduces the allowable signal swing at the drain.
Field-Effect Transistors (FETs) 3.9 MOSFET as an Aplifier Sall-signal equivalent circuit odels Discussions about the MOSFET transconductance W Forula 1: g = k n ( VGS Vt ) L It indicates that g is proportional
More informationA Novel Sine Duty-Cycle Modulation Control Scheme for Photovoltaic Single-Phase Power Inverters
Leandre Nnee Nnee, Jean Mbihi A Novel Sine Duty-Cycle Modulation Control Schee for Photovoltaic Single-Phase Power Inverters ARNAUD OBONO BIYOBO Research Laboratory of Coputer Science Engineering and Autoation
More informationAPPLICATION NOTES TECHNICAL NOTE TN 494
APPLICATION NOTES TECHNICAL NOTE TN 494 MAXIMUM PERMISSIBLE LENGTHS OF ELECTRIC CABLES FOR THE CONNECTION OF HYDRAULIC VALVES WITH INTEGRATED ELECTRONICS CA4885-00; Version.0, 05/08 Copyright Copyright
More informationLUENBERGER ALGORITHM BASED HARMONICS ESTIMATOR FOR FRONT END RECTIFIER AND PWM-VSI
LUENBERGER ALGORITHM BASED HARMONICS ESTIMATOR FOR FRONT END RECTIFIER AND PWM-VSI P Ajay-D-Vial Raj R.Sundaraurthy S Jeevananthan M.Sudhakaran Departent of Electrical and Electronics Engineering, Pondicherry
More informationOn the field of view of a Galilean telescope
Transactions of the Optical Society On the field of view of a Galilean telescope To cite this article: H A Hughes and P F Everitt 1920 Trans. Opt. Soc. 22 15 View the article online for updates and enhanceents.
More informationSAMPLING PERIOD ASSIGNMENT FOR NETWORKED CONTROL SYSTEMS BASED ON THE PLANT OPERATION MODE
SAMPLING PERIOD ASSIGNMENT FOR NETWORKED CONTROL SYSTEMS BASED ON THE PLANT OPERATION MODE Daniel A. Perez, Ubirajara F. Moreno, Carlos B. Montez, Tito L. M. Santos PGEAS - Prograa de Pós-Graduação e Engenharia
More informationA Novel Control Scheme to Reduce Storage Capacitor of Flyback PFC Converter
International Journal of Electronics and Electrical Engineering Vol. 4, No., April 6 A Novel Control Schee to Reduce Storage Capacitor of Flyback PFC Converter Boyang Chen and Lei Li College of Autoation,
More informationKeywords: Equivalent Instantaneous Inductance, Finite Element, Inrush Current.
Discriination of Inrush fro Fault Currents in Power Transforers Based on Equivalent Instantaneous Inductance Technique Coupled with Finite Eleent Method Downloaded fro ijeee.iust.ac.ir at 5:47 IRST on
More informationMismatch error correction for time interleaved analog-to-digital converter over a wide frequency range
Misatch error correction for tie interleaved analog-to-digital converter over a wide frequency range Zouyi Jiang,,2 Lei Zhao,,2,a) Xingshun Gao,2, Ruoshi Dong,2, Jinxin Liu,2, and Qi An,2 State Key Laboratory
More informationKeywords Frequency-domain equalization, antenna diversity, multicode DS-CDMA, frequency-selective fading
Joint Frequency-doain Equalization and Antenna Diversity Cobining for Orthogonal Multicode DS-CDMA Signal Transissions in A Frequency-selective Fading Channel Taeshi ITAGAKI *1 and Fuiyui ADACHI *2 Dept.
More informationDesign and Implementation of Block Based Transpose Form FIR Filter
Design and Ipleentation of Bloc Based Transpose For FIR Filter O. Venata rishna 1, Dr. C. Venata Narasihulu 2, Dr.. Satya Prasad 3 1 (ECE, CVR College of Engineering, Hyderabad, India) 2 (ECE, Geethanjali
More informationYield Enhancement Techniques for 3D Memories by Redundancy Sharing among All Layers
Yield Enhanceent Techniques for 3D Meories by Redundancy Sharing aong All Layers Joohwan Lee, Kihyun Park, and Sungho Kang Three-diensional (3D) eories using through-silicon vias (TSVs) will likely be
More informationNONLINEAR WAVELET PACKET DENOISING OF IMPULSIVE VIBRATION SIGNALS NIKOLAOS G. NIKOLAOU, IOANNIS A. ANTONIADIS
NONLINEAR WAVELET PACKET DENOISING OF IMPULSIVE VIBRATION SIGNALS NIKOLAOS G. NIKOLAOU, IOANNIS A. ANTONIADIS Departent of Mechanical Engineering, Machine Design and Control Systes Section National Technical
More informationAmplifiers and Feedback
6 A Textbook of Operational Transconductance Aplifier and AIC Chapter Aplifiers and Feedback. INTRODUCTION Practically all circuits using Operational Transconductance Aplifiers are based around one of
More informationLETTER Adaptive Multi-Stage Parallel Interference Cancellation Receiver for Multi-Rate DS-CDMA System
IEICE TRANS. COMMUN., VOL.E87 B, NO.8 AUGUST 2004 2401 LETTER Adaptive Multi-Stage Parallel Interference Cancellation Receiver for Multi-Rate DS-CDMA Syste Seung Hee HAN a), Student Meber and Jae Hong
More informationUsing Adaptive Modulation in a LEO Satellite Communication System
Proceedings of the 11th WSEAS International Conference on COMMUNICATIONS, Agios Nikolaos, Crete Island, Greece, July 26-28, 27 255 Using Adaptive Modulation in a LEO Satellite Counication Syste L. HADJ
More informationCOMBINED FREQUENCY AND SPATIAL DOMAINS POWER DISTRIBUTION FOR MIMO-OFDM TRANSMISSION
The 8th nnual IEEE International Syposiu on Personal, Indoor and Mobile Radio Counications (PIMRC 07) COMINED FREQUENCY ND SPTIL DOMINS POWER DISTRIUTION FOR MIMO-OFDM TRNSMISSION Wladiir ocquet, Kazunori
More informationReal Time Etch-depth Measurement Using Surface Acoustic Wave Sensor
Australian Journal of Basic and Applied Sciences, (8): -7, 1 ISSN 1991-8178 Real Tie Etch-depth Measureent Using Surface Acoustic Wave Sensor 1 Reza Hosseini, Navid Rahany, 3 Behrad Soltanbeigi, Rouzbeh
More informationInvestigating Multiple Alternating Cooperative Broadcasts to Enhance Network Longevity
Investigating Multiple Alternating Cooperative Broadcasts to Enhance Network Longevity Aravind Kailas School of Electrical and Coputer Engineering Georgia Institute of Technology Atlanta, Georgia 3033-050,
More informationSwitching Transients of Low Cost Two Speed Drive for Single-Phase Induction Machine
Switching Transients of Low Cost Two Speed Drive for Single-Phase Induction Machine L. Woods, A. Hoaifar, F. Fatehi M. Choat, T. Lipo CA&T State University University of Wisconsin-Madison Greensboro, C
More informationDesign of a Microcontroller Based Automatic Voltage Stabilizer with Toroidal Transformer
Design of a Microcontroller Based utoatic Voltage Stabilizer with Toroidal Transforer Thet Htun ung Departent of Electrical Power Engineering Mandalay Technological University Myanar bstract- Every electrical
More informationOptimal Modulation Index of the Mach-Zehnder Modulator in a Coherent Optical OFDM System Employing Digital Predistortion
Optial Modulation Index of the Mach-Zehnder Modulator in a Coherent Optical OFDM yste Eploying Digital redistortion David Rörich, Xiaojie Wang, Michael Bernhard, Joachi peidel Universität tuttgart, Institut
More informationSimplified Analysis and Design of MIMO Ad Hoc Networks
Siplified Analysis and Design of MIMO Ad Hoc Networks Sunil Srinivasa and Martin Haenggi Departent of Electrical Engineering University of Notre Dae Notre Dae, IN 46556, USA Eail: {ssriniv, haenggi}@nd.edu
More informationDeveloping Active Sensor Networks with Micro Mobile Robots: Distributed Node Localization
Developing Active Networks with Micro Mobile Robots: Distributed Node Localization Weihua Sheng and Gira Tewolde Kettering University/Forerly GMI Flint, MI 484 Eail: wsheng@kettering.edu Abstract Top-down
More informationWaveform Design and Receive Processing for Nonrecurrent Nonlinear FMCW Radar
Wavefor Design and Receive Processing for Nonrecurrent Nonlinear FMCW Radar John Jakabosky and Shannon D. Blunt Radar Systes Lab University of Kansas Lawrence, KS Braha Hied Sensors Directorate Air Force
More informationAnalysis of wind farm islanding experiment
Downloaded fro orbit.dtu.dk on: Apr 4, 19 Analysis of wind far islanding experient Pedersen, Jørgen Kaas; Pedersen, Knud Ole Helgesen; Poulsen, Niels Kjølstad; Akke, Magnus Published in: I E E E Transactions
More informationEinstein Classes, Unit No. 102, 103, Vardhman Ring Road Plaza, Vikas Puri Extn., Outer Ring Road New Delhi , Ph. : ,
AENAING CUEN PAC 7. Introduction : Q. What is direct current? Solution : Direct current does not change direction with tie. Q. What is alternating current? Solution : Alternating currents and voltages
More informationExploring the Electron Tunneling Behavior of Scanning Tunneling Microscope (STM) tip and n-type Semiconductor
Page 110 Exploring the of Scanning Tunneling Microscope (STM) tip and n-type Seiconductor M. A. Rahan * and J. U. Ahed Departent of Applied Physics, Electronics & Counication Engineering, University of
More informationA Novel NLOS Mitigation Approach for Wireless Positioning System
2 3rd International Conference on Coputer and Electrical Engineering (ICCEE 2) IPCSIT vol. 53 (22) (22) IACSIT Press, Singapore DOI:.7763/IPCSIT.22.V53.No..54 A Novel NLOS Mitigation Approach for Wireless
More informationHarmonic Elimination in Multilevel Converters
1 Haronic Eliination in Multilevel Converters John Chiasson, Leon Tolbert, Keith McKenzie and Zhong Du ECE Departent The University of Tennessee Knoxville, TN 37996 chiasson@utk.edu, tolbert@utk.edu, kc18@utk.edu,
More informationA soft decision decoding of product BCH and Reed-Müller codes for error control and peak-factor reduction in OFDM
A soft decision decoding of product BCH and Reed-Müller codes for error control and pea-factor reduction in OFDM Yves LOUET *, Annic LE GLAUNEC ** and Pierre LERAY ** * PhD Student and ** Professors, Departent
More informationARecent report pointed out that in 2014 the amount of data
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. XX, NO. XX, JANUARY 2XX 1 QoS-Aware Energy Efficient Association and Resource Scheduling for HetNets Taewoon Ki and J. Morris Chang, Senior Meber, IEEE Abstract
More informationSmarter Balanced Assessment Consortium Claims, Targets, and Standard Alignment for Math
Sarter Balanced Assessent Consortiu Clais, s, Stard Alignent for Math The Sarter Balanced Assessent Consortiu (SBAC) has created a hierarchy coprised of clais targets that together can be used to ake stateents
More informationEFFECTS OF MASKING ANGLE AND MULTIPATH ON GALILEO PERFORMANCES IN DIFFERENT ENVIRONMENTS
1 EFFECTS OF MASKING ANGLE AND MULTIPATH ON GALILEO PERFORMANCES IN DIFFERENT ENVIRONMENTS M. Malicorne*, M. Bousquet**, V. Calettes*** SUPAERO, 1 avenue Edouard Belin BP 43, 3155 Toulouse Cedex, France.
More informationALTERNATING CURRENT (A.C. CIRCUITS)
AENANG UEN (SHO) 3-4 PAGE: AENANG UEN (A.. US) Alternating current An electrical current, agnitude of which changes with tie and polarity reverses periodically is called alternating current (A.) he sinusoidal
More informationA simple charge sensitive preamplifier for experiments with a small number of detector channels
A siple charge sensitive preaplifier for experients with a sall nuber of detector channels laudio Arnaboldi and Gianluigi Pessina Istituto Nazionale di Fisica Nucleare (INFN) Università degli Studi di
More information