Adaptive Harmonic IIR Notch Filter with Varying Notch Bandwidth and Convergence Factor
|
|
- Katherine Black
- 6 years ago
- Views:
Transcription
1 Journal of Counication and Coputer ( doi:.765/ /4.6. D DAVID PUBLISHING Adaptive Haronic IIR Notch Filter with Varying Notch Bandwidth and Convergence Factor Li Tan, Jean Jiang, and Liango Wang. College of Engineering and Technology, Purdue University North Central, Westville, Indiana 4639, USA. School of echanical Engineering, Nanjing University of Science and Technology, Nanjing, 94, China Abstract: This paper proposes an iproved adaptive haronic IIR notch filter. The proposed algorith utilizes varying notch bandwidth and convergence factor to achieve robust frequency estiation and tracking. A forula to deterine the stability bound by using the LS (least ean squares algorith is derived. In addition, the developed algorith is also devised to prevent the adaptive algorith fro converging to its local inia of the SE function due to signal fundaental frequency switches in the tracking process. Key words: Adaptive filter, LS algorith, frequency tracking, and notch filter.. Introduction Frequency tracking in presence of haronic distortion and noise has been attracted uch research attention [-6], where various adaptive IIR notch filters are applied. In general, if a signal to be estiated is subjected to nonlinear effects in which possible haronic frequency coponents are generated, a higher-order notch filter, which is constructed by cascading second-order IIR (infinite ipulse response notch filters, can be eployed to estiate the signal frequency including any haronic frequencies. The general IIR notch filter ethod [-6] uses ore filter coefficients and the corresponding adaptive algorith ay converge to local inia of the SE (ean square error function due to signal frequency changes. A low-cost adaptive haronic IIR notch filter with a single adaptive paraeter [7] has recently been proposed to efficiently perfor frequency estiation and tracking in a haronic frequency environent. The proposed LS (least ean square algorith begins with an optial initial paraeter, which is estiated based on a block of input saples, to prevent the algorith fro converging to the local inia. However, when the signal fundaental frequency switches during the tracking process, the global iniu of the SE function will suddenly be changed. In this scenario, the LS algorith ay converge to the local inia with a wrong estiated frequency value or the algorith could start at the point of the SE function with a very low gradient so that the algorith suffers fro a slow convergence rate. Therefore, in this paper, a siple schee is first devised to onitor the global iniu of the SE function and it will reset the adaptive paraeter using its new estiation whenever a possible local iniu is detected. Secondly, we iprove the algorith convergence and frequency tracking by using varying notch bandwidth and convergence factor. The coputer siulations deonstrate validity of the iproved algorith. Finally, we present conclusions. Corresponding author: Li Tan, Ph.D., professor of electrical engineering, research fields: digital signal processing, active noise control and control systes, digital counications. E-ail: lizhetan@pnc.edu.
2 Adaptive Haronic IIR Notch Filter with Varying Notch Bandwidth and Convergence Factor 485. Adaptive Haronic IIR Notch Filter and Proposed Algorith. Adaptive Haronic IIR Notch Filter The adaptive haronic IIR notch filter proposed in Ref. [7] has the following for: H ( z H ( z H ( z H ( z H ( z ( where, H ( z denotes the th nd-order IIR sub-filter whose transfer function is defined as: z cos( z H ( z ( rz cos( r z The filter output y ( n fro the th sub-filter can be expressed as: y y cos( y ( n y (3 rcos( y( n r y,,, with y x. Fro Eq. (, the transfer function has only one adaptive paraeter and has zeros on the unit circle resulting in infinite-depth notches. The paraeter r controls the notch bandwidth. It requires r for achieving narrowband notches. When r is close to, the 3-dB notch bandwidth can be approxiated as BW ( r [8]. The SE function, Ey [ ] Ee [ ], at the final stage is iniized using the LS algorith, where en ( y. Once the adaptive paraeter is adapted to the angle corresponding to the signal fundaental frequency, each (,3,, will autoatically lock to its haronic frequency. The LS update equations are given below: cos[ ] ( n sin[ ] y ( n rcos[ ] ( n r rsin[ ] y ( n,,, where, (4 ( n y (5 y is the gradient ter with y xn ( ( n and is the convergence factor. Since the SE function is a nonlinear function of the single adaptive paraeter, the algorith ay converge to one of the local inia due to the inappropriately chosen initial value of. To prevent local convergence, the algorith will start with an optial initial value, which is coarsely searched over the frequency range: /(8, /(8,,79 /(8, as follows: (6 arg (in Ee [ ( n, ] / where, the estiated SE function, Ee [ ( n, ], can be deterined by using a block of N signal saples: N Ee [ ( n, ] y ( ni, (7 N i When the signal fundaental frequency switches, the current algorith ay suffers fro a local iniu convergence with a wrong frequency value or a slow convergence rate. Fig. shows the SE function global iniu changes when the fundaental frequency switches fro 875 Hz to,5 Hz. The algorith is assued to start at the location of 875 Hz (previous global iniu corresponding to 875 Hz will converge to the local iniu at the location of 8 Hz (all SE functions are siulated using the sapling rate of 8 Hz, 3, r.96 and input saples. Again, when the fundaental frequency switches fro,5 Hz to, Hz, the algorith will suffer slow convergence, since the gradient of the SE function corresponding to the fundaental frequency of, Hz at the location of,5 Hz is very sall (approxiately flat. This is due to that the pole radius, r is chosen to be close to to aintain a narrower notch bandwidth.. Global iniu onitoring and Resetting To prevent the proble of local iniu convergence, we onitor the global iniu by coparing the frequency deviation
3 486 Adaptive Haronic IIR Notch Filter with Varying Notch Bandwidth and Convergence Factor.8.6 Algorith starts at 5 Hz and converges to Hz at slow speed.4 SE..8.6 Algorith starts at 875 Hz and converges to 8 Hz Local iniu at 8 Hz SE for 875 Hz.4 SE for Hz SE for 5 Hz Frequency (Hz Fig. SE functions for the haronic notch filter at the fundaental frequencies, 875 Hz,, Hz and,5 Hz, respectively. f f f (8 with a axiu allowable frequency deviation chosen below: fax.5 (.5 BW (9 where, f.5 fs / Hz is the pre-scanned optial frequency via Eqs. (6 and (7, f s denotes the sapling rate in Hz, and BW is the 3-dB bandwidth of the notch filter, which is approxiated by BW ( r fs / in Hz. If f fax, the adaptive algorith ay possibly converge to its local inia. Then the adaptive paraeter can be reset to its new estiated optial value fro Eqs. (6 and (7 and then the algorith will resue frequency tracking fro the neighborhood of the global iniu..3 Varying Notch Bandwidth and Convergence Factor To illustrate the iproveent of the slow convergence rate as described in Fig., we plot the SE functions corresponding to the fundaental frequency of, Hz for different pole radiuses using the sae sapling rate of 8, Hz, 3, and input saples and their corresponding agnitude frequency responses in Fig.. It is observed that when the pole radius r is uch saller than ( r.8, we will have a larger SE function gradient starting at,5 Hz to speed up the slow convergence. But using the saller r will end up with a degradation of the notch filter frequency response, that is, a larger notch bandwidth. On the other hand, choosing r close to ( r.96 will aintain a narrow notch bandwidth but result in a slow convergence rate, since the algorith begins with a sall SE function gradient value at,5 Hz. Consider the fact that when is located away * fro its optial value, then it is desirable for the adaptive notch filter to have a bigger notch bandwidth (saller r and a larger convergence factor (larger ; when approaches to its optial value, the narrower notch bandwidth ( r close to and sall convergence factor are desirable to achieve a sall isadjustent as well as preserve a good notch filter frequency response (see Fig. b. Furtherore, when the algorith approaches to its global iniu, the
4 Adaptive Haronic IIR Notch Filter with Varying Notch Bandwidth and Convergence Factor (a SE 4 r=.9 r=.8 Larger gradient value Sall gradient value 5 Hz r= Frequency (Hz r=.8 (b H(f (db r=.9 r= Frequency (Hz Fig. (a SE functions for r.8, r.9 and r.96 ; (b agnitude frequency responses for r.8, r.9, and r.96. cross-correlation cn ( between the final filter output en ( y and its delayed signal y ( n becoes uncorrelated, that is, cn ( Ey [ ( ny ( n]. Hence, we can adopt the cross-correlation easureent to control the notch bandwidth and convergence factor. The cross-correlation can be estiated below: cn ( cn ( ( y( ny ( n ( where,. The radius of the pole locations, which controls the notch bandwidth, can be updated according to: rn ( r r e cn ( in ( where, rin r rin r with rin.8 (still providing a good notch filter frequency response. The convergence factor is then updated according to where, c ax ( e ( ax is the upper bound for in r r r and is the daping constant, which controls the speed of change for the notch bandwidth and convergence factor. Our iproved algorith is then suarized in Table. To include Eqs. (-( in the iproved algorith, the additional coputational coplexity over the algorith proposed in Ref. [7] for processing each input saple requires six ultiplications, four additions, two absolute operations, and one exponential function operation..4 Stability Bound We focus on deterining a siple upper bound for Table Adaptive haronic IIR notch LS algorith with varying notch bandwidth and convergence factor. Step : Deterine the initial using (6 and (7: Search for arg (in Ee [ ( n, ] / for /(8,,79 /(8 Set the initial condition: ( and f.5 s f / Hz. Step : Apply the LS algorith using (3, (4, (, (, (, and (5 to obtain. Step 3: Convert in radians to the desired estiated fundaental frequency in Hz: f.5 fs /. Step 4: onitor the global iniu: if f f fax, go to step Otherwise continue Step.
5 488 Adaptive Haronic IIR Notch Filter with Varying Notch Bandwidth and Convergence Factor Eq. ( using the existing approach in Refs. [-4]. For siplicity, we oit the second and higher order ters in the Taylor series expansion of the filter transfer function (theoretical analysis including the second-order ters is lengthy and not pursued in this work. We achieve the following results: j H ( e, H ( ( (3 where, sin( j H ( Hk ( e j j ( r( e re k, k (4 B ( The agnitude and phase of H ( in (4 are defined below: B ( H ( (5 H ( (6 Now, consider the input signal x( n with each haronic aplitude A and phase as: x Acos[( n] v (7 where, vn ( is the white Gaussian noise. Siilar to Refs. [, 3], we can approxiate the haronic IIR notch filter output as: y ( n AB( cos[( n ] v (8 where, v ( n is the filter output noise and note that [ ] (9 To derive the gradient filter transfer function defined as S( z ( z/ X( z in Refs. [, 3], we can achieve the following recursion: S( z H( z S ( z z sin( [ rh ( z] ( H ( z H ( z rcos( z r z Expanding Eq. ( leads to: nsin( n z s( z Hk( z n k, kn r cos( n z r z r nsin( n z H( z rcos( n z r z n ( At the optial points,, the first ter in Eq. ( is approxiately constant, since we can easily verify that these points are essentially the centers of band-pass filters [4]. The second-ter is zero due to j He (. Therefore, for siplicity, we can approxiate the gradient filter frequency response at as: j j j sin( e s ( e H ( e k, k cos( r e r e j sin( Hk( e B( j j k, k ( r( e re Using Eq. (4 leads to: k j j ( j S ( e B( (3 The gradient filter output can be approxiated by: ( n B( Acos[( n ] v (4 where, v ( n is the noise output fro the gradient filter. Substituting Eqs. (8 and (4 in Eq. (5 leads to the following: E[ ( n] E[ ] E[ y ] (5 E[ ( n] E[ ] AB ( cos( E[ ] (6 Ev [ ( nv ] Then the stability bound in ean convergence is achieved as: ( / AB ( cos( (7 The last ter in Eq. (6 is not zero [3], but it can significantly be reduced by using a varying convergence factor in Eq. (, the upper bound can be expressed as: ( (8 AB( Since evaluating Eq. (8 still requires knowledge of all the haronic aplitudes, we siplify Eq. (8 by assuing that each frequency coponent has the sae aplitude to obtain: ( (9 x B(
6 Adaptive Haronic IIR Notch Filter with Varying Notch Bandwidth and Convergence Factor 489 where, x is the power of the input signal. Furtherore, for each given, we can nuerically search for the upper bound ax which works for the required frequency range, that is, ax in[arg( u( ] (3 / Fig. 3 plots the upper bounds based on Eq. (9 versus using for r.8, r.9 and x r.96, respectively. We can see that a saller upper bound will be required when r is close to and increases. 3. Coputer Siulations In our siulations, the input signal containing up to third haronics is used, that is, x sin( fan/ fs.5cos( fan/ fs (3.5cos( 3 fan/ fs where, f a is the fundaental frequency and f s = 8, Hz. The fundaental frequency changes for every n =, saples. Our developed algorith uses the following paraeters: 3, N,, c(.,.997, rin.8, r.6 4 The upper bound ax.4 is nuerically searched using Eqs. (5, (3, (9, (3 for r.96. The behaviors of the developed algorith are deonstrated in Fig. 4. Figs. 4a-4c depict the cross correlation cn (, pole radius rn ( and adaptive step size. Fig. 4d shows the tracked fundaental frequencies. As expected, when the algorith converges, cn ( approaches to zero (uncorrelated, rn ( will becoe r ax.96 to offer a narrowest notch bandwidth. At the sae tie, un ( approaches to zero so that the isadjustent can be reduced. In addition, when the frequency changes fro 875 Hz to,5 Hz, the algorith starts oving away fro its original global iniu, since the SE function is changed. Once the tracked frequency is oved beyond the axiu allowable frequency deviation fax, the algorith relocates and reset and is reset again after the frequency is switched fro,5 Hz to, Hz. To copare with the algorith recently proposed in Ref. [7], we apply the sae input signal to the adaptive haronic IIR notch filter using the fixed notch bandwidth ( r.96 and convergence factors, 4 where ax.4 (upper bound, fast 4 convergence factor and (slow convergence - - r=.8 uax -3 r=.9 r= Fig. 3 Plots of the upper bounds Eq. (9 versus using x.
7 49 Adaptive Haronic IIR Notch Filter with Varying Notch Bandwidth and Convergence Factor (a c(n.4. Reset Reset (b r(n (c u(n x Hz 5 Hz Hz n (Iterations Fig. 4 (a The cross correlation cn ( between the notch filter output and its delayed output; (b varying notch filter paraeter rn ( ; (c varying convergence factor ; (d tracked fundaental frequencies f ( n. (d f(n (Hz (a f(n (Hz Hz Hz 875 Hz ( ( (3 8 Hz, wrong frequency value ( (3 (b f(n (Hz ( SNR= db SNR=8 db SNR=9 db n (Iterations Fig. 5 (a Frequency tracking behavior coparisons for noise free condition; (b frequency tracking behavior coparisons 4 for noise environent. (: new algorith, ax.4, rin.8 and r ax.96 ; (: algorith [7], r.96 and ax.4 r and 4 (fast convergence; (3: algorith [7],.96 4 (slow convergence. factor are used, respectively. As shown in Fig. 5a, when the fundaental frequency switches fro 875 Hz to,5 Hz, the iproved algorith converges to its global iniu with a true frequency of,5 Hz while the algorith in Ref. [7] with both fast and slow convergence factors converges to a local iniu,
8 Adaptive Haronic IIR Notch Filter with Varying Notch Bandwidth and Convergence Factor 49 respectively, with a wrong tracked frequency value as 8 Hz. Fig. 5b shows siulation results for noisy environent, where both algoriths converge to their global iniu, respectively. When the fundaental frequency switches fro,5 Hz to, Hz, the proposed algorith takes iterates to converge, while the algorith [7] takes 5 iterations using ax and 3 iterations to converge, respectively. The algorith proposed in Ref. [7] has a slow convergence rate because of the sall gradient value of its SE function. In addition, the iproved algorith is robust to noise as depicted in Fig. 5b. This is due to the fact that when the algorith converges, the convergence factor approaches to zero to offer the saller isadjustent. It is evident fro Fig. 5 that our iproved algorith tracks the signal frequency switches well for both noise free and noise conditions. 4. Conclusions In this paper, we have proposed an iproved adaptive haronic IIR notch filter for frequency tracking in a haronic frequency environent. The proposed algorith utilizes varying notch bandwidth and convergence factor to achieve a higher convergence rate and robust frequency tracking. The developed algorith is able to prevent the adaptive algorith fro its local iniu convergence due to signal fundaental frequency switches in the tracking process. References [] Chicharo, J., and Ng, T. 99. Gradient-Based Adaptive IIR Notch Filtering for Frequency Estiation. IEEE Trans. Acoust., Speech, and Signal Processing 38 (ay: [] Zhou, J., and Li, G. 4. Plain Gradient-Based Direct Frequency Estiation Using Second-Order Constrained Adaptive IIR Notch Filter. Electronics Letters 5: [3] Xiao, Y., Takeshita, Y., and Shida, K.. Steady-State Analysis of a Plain Gradient Algorith for a Second-Order Adaptive IIR Notch Filter with Constrained Poles and Zeros. IEEE Transactions on Circuits and Systes-II 48 (July: [4] Oetraglia,., Shynk, J., and itra, S Stability Bounds and Steady-State Coefficient Variance for a Second-Order Adaptive IIR Notch Filter. IEEE Transactions on Signal Processing 4. [5] Kusljevic,., Toic, J., and Jovanovic, L.. Frequency Estiation of Three-Phase Power Syste Using Weighted-Least-Square Algorith and Adaptive FIR Filtering. IEEE Trans. on Instru. eas. 59 (February: 3-9. [6] Piskorowski, J.. Digital Q-Varying Notch IIR Filter with Transient Suppression. IEEE Trans. on Instru. eas. 59 (Feb.: [7] Tan, L., and Jiang, J. 9. Novel Adaptive IIR Notch Filter for Frequency Estiation and Tracking. IEEE Signal Processing agazine (Noveber: [8] Tan, L., and Jiang, J. 3. Digital Signal Processing: Fundaentals and Applications. nd ed., Elsevier/Acadeic Press.
Real-Time Frequency Tracking Using Novel Adaptive Harmonic IIR Notch Filter
Real-Time Frequency Tracking Using Novel Adaptive Harmonic IIR Notch Filter Li Tan, Ph.D. College of Engineering and Technology Purdue University North Central lizhetan@pnc.edu Jean Jiang, Ph.D. College
More informationSelective Harmonic Elimination for Multilevel Inverters with Unbalanced DC Inputs
Selective Haronic Eliination for Multilevel Inverters with Unbalanced DC Inputs Abstract- Selective haronics eliination for the staircase voltage wavefor generated by ultilevel inverters has been widely
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 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 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 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 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 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 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 informationNon-Linear Weighting Function for Non-stationary Signal Denoising
Non-Linear Weighting Function for Non-stationary Signal Denoising Farès Abda, David Brie, Radu Ranta To cite this version: Farès Abda, David Brie, Radu Ranta. Non-Linear Weighting Function for Non-stationary
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 informationOverlapping Signal Separation in DPX Spectrum Based on EM Algorithm. Chuandang Liu 1, a, Luxi Lu 1, b
nd International Worshop on Materials Engineering and Coputer Sciences (IWMECS 015) Overlapping Signal Separation in DPX Spectru Based on EM Algorith Chuandang Liu 1, a, Luxi Lu 1, b 1 National Key Laboratory
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 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 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 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 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 informationMitigation of GPS L 2 signal in the H I observation based on NLMS algorithm Zhong Danmei 1, a, Wang zhan 1, a, Cheng zhu 1, a, Huang Da 1, a
2nd International Conference on Electrical, Coputer Engineering and Electronics (ICECEE 25 Mitigation of GPS L 2 signal in the H I observation based on NLMS algorith Zhong Danei, a, Wang zhan, a, Cheng
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 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 informationSpeech Enhancement using Temporal Masking and Fractional Bark Gammatone Filters
PAGE 420 Speech Enhanceent using Teporal Masking and Fractional Bark Gaatone Filters Teddy Surya Gunawan, Eliathaby Abikairajah School of Electrical Engineering and Telecounications The University of New
More informationIterative Receiver Signal Processing for Joint Mitigation of Transmitter and Receiver Phase Noise in OFDM-Based Cognitive Radio Link
Iterative Receiver Signal Processing for Joint Mitigation of Transitter and Receiver Phase Noise in OFDM-Based Cognitive Radio Link Ville Syrjälä and Mikko Valkaa Departent of Counications Engineering
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 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 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 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 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 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 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 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 informationAdaptive Double Notch Filter for Interference Suppression in the GPS Receiver
ICCAS5 June -5, KINTEX, Gyeonggi-Do, Korea Adaptive Double Notch Filter or Intererence Suppression in the GPS Receiver Eu-Geun Han, Geon-Woo Lee, Chansik Park, Dong-Ho Shin, Sung-Soo Lee and Sang Jeong
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 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 informationWindowing High-Resolution ADC Data Part 2
Windoing High-Resolution DC Data art Josh Carnes pplications Engineer, ational Seiconductor Corp. bstract nalyzing data fro DCs requires the use of indoing functions for spectral estiation and analysis
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 informationPARAMETER OPTIMIZATION OF THE ADAPTIVE MVDR QR-BASED BEAMFORMER FOR JAMMING AND MULTIPATH SUPRESSION IN GPS/GLONASS RECEIVERS
PARAMETER OPTIMIZATION OF THE ADAPTIVE MVDR QR-BASED BEAMFORMER FOR JAMMING AND MULTIPATH SUPRESSION IN GPS/GLONASS RECEIVERS V. Behar 1, Ch. Kabakchiev 2, G. Gaydadjiev 3, G.Kuzanov 4, P. Ganchosov 5
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 informationIntermediate-Node Initiated Reservation (IIR): A New Signaling Scheme for Wavelength-Routed Networks with Sparse Conversion
Interediate-Node Initiated Reservation IIR): A New Signaling Schee for Wavelength-Routed Networks with Sparse Conversion Kejie Lu, Jason P. Jue, Tiucin Ozugur, Gaoxi Xiao, and Irich Chlatac The Center
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 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 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 informationFORWARD MASKING THRESHOLD ESTIMATION USING NEURAL NETWORKS AND ITS APPLICATION TO PARALLEL SPEECH ENHANCEMENT
FORWARD MASKING THRESHOLD ESTIMATION USING NEURAL NETWORKS AND ITS APPLICATION TO PARALLEL SPEECH ENHANCEMENT T. S. GUNAWAN 1, O. O. KHALIFA 1, E. AMBIKAIRAJAH 2 1 Electrical and Coputer Engineering Departent,
More informationIgnition and monitoring technique for plasma processing of multicell superconducting radio frequency cavities
Ignition and onitoring technique for plasa processing of ulticell superconducting radio frequency cavities Marc Doleans Oak Ridge ational Laboratory, Oak Ridge, Tennessee 3783, USA E ail: doleans@ornl.gov
More informationTrack-Before-Detect for an Active Towed Array Sonar
17-20 Noveber 2013, Victor Harbor, Australia Track-Before-Detect for an Active Towed Array Sonar Han X. Vu (1,2), Sauel J. Davey (1,2), Fiona K. Fletcher (1), Sanjeev Arulapala (1,2), Richard Elle (1)
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 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 informationModeling and Parameter Identification of a DC Motor Using Constraint Optimization Technique
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-issn: 2278-684,p-ISSN: 2320-334X, Volue 3, Issue 6 Ver. II (Nov. - Dec. 206), PP 46-56 www.iosrjournals.org Modeling and Paraeter Identification
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 informationNovel Multilevel Inverter Carrier-Based PWM Method
98 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 5, NO. 5, SEPTEMBER/OCTOBER 999 Novel Multilevel Inverter Carrier-Based PWM Method Leon M. Tolbert, Senior Meber, IEEE, and Thoas G. Habetler, Senior
More informationOTC Statistics of High- and Low-Frequency Motions of a Moored Tanker. sensitive to lateral loading such as the SAL5 and
OTC 61 78 Statistics of High- and Low-Frequency Motions of a Moored Tanker by J.A..Pinkster, Maritie Research Inst. Netherlands Copyright 1989, Offshore Technology Conference This paper was presented at
More informationNINTH INTERNATIONAL CONGRESS ON SOUND AND VIBRATION, ICSV9 PASSIVE CONTROL OF LAUNCH NOISE IN ROCKET PAYLOAD BAYS
first nae & faily nae: Rick Morgans Page nuber: 1 NINTH INTERNATIONAL CONGRESS ON SOUND AND VIBRATION, ICSV9 PASSIVE CONTROL OF LAUNCH NOISE IN ROCKET PAYLOAD BAYS Rick Morgans, Ben Cazzolato, Anthony
More informationA 1.2V rail-to-rail 100MHz amplifier.
University of Michigan, EECS413 Final project. A 1.2V rail-to-rail 100MHz aplifier. 1 A 1.2V rail-to-rail 100MHz aplifier. Mark Ferriss, Junghwan Han, Joshua Jaeyoung Kang, University of Michigan. 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 informationROBUST UNDERWATER LOCALISATION OF ULTRA LOW FREQUENCY SOURCES IN OPERATIONAL CONTEXT
ROBUST UNDERWATER LOCALISATION OF ULTRA LOW FREQUENCY SOURCES IN OPERATIONAL CONTEXT M. Lopatka a, B. Nicolas a, G. Le Touzé a,b, X. Cristol c, B. Chalindar c, J. Mars a, D. Fattaccioli d a GIPSA-Lab /DIS/
More informationMulticarrier Interleave-Division Multiple Access Communication in Multipath Channels
Multicarrier Interleave-Division Multiple Access Counication in Multipath Channels Habib ur Rehan *, Muhaad Naee **, Iran Zaa *, Syed Isail Shah ** * Center for Advanced Studies in Engineering (CASE) Islaabad
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 informationComparing structural airframe maintenance strategies based on probabilistic estimates of the remaining useful service life
22 èe Congrès Français de Mécanique Lyon, 24 au 28 Août 2015 Coparing structural airfrae aintenance strategies based on probabilistic estiates of the reaining useful service life. WAG a, C.GOGU b,.biaud
More informationSIG: Signal-Processing
TH Köln - Technology, Arts, Sciences Prof. Dr. Rainer Bartz SIG: Signal-Processing Copendiu (6) Prof. Dr.-Ing. Rainer Bartz rainer.bartz@th-koeln.de Contact: eail: website: office: rainer.bartz@th-koeln.de
More informationEXPERIMENTAL VERIFICATION OF SINUSOIDAL APPROXIMATION IN ANALYSIS OF THREE-PHASE TWELVE-PULSE OUTPUT VOLTAGE TYPE RECTIFIERS
th INTERNATIONAL SYPOSIU on POWER ELECTRONICS - Ee 9 XV eđunarodni sipoziju Energetska elektronika Ee 9 NOVI SAD, REPUBLIC OF SERBIA, October 8 th - th, 9 EXPERIENTAL VERIFICATION OF SINUSOIDAL APPROXIATION
More informationA Preprocessing Method to Increase High Frequency Response of A Parametric Loudspeaker
A Preprocessing Method to Increase High Frequency Response of A Paraetric Loudspeaker Chuang Shi * and Woon-Seng Gan Digital Processing Laboratory School of Electrical and Electronic Engineering Nanyang
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 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 informationPower Optimal Signaling for Fading Multi-access Channel in Presence of Coding Gap
Power Optial Signaling for Fading Multi-access Channel in Presence of Coding Gap Ankit Sethi, Prasanna Chaporkar, and Abhay Karandikar Abstract In a ulti-access fading channel, dynaic allocation of bandwidth,
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 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 informationExperiment 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 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 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 informationPerformance Analysis of Atmospheric Field Conjugation Adaptive Arrays
Perforance Analysis of Atospheric Field Conjugation Adaptive Arrays Aniceto Belonte* a, Joseph M. Kahn b a Technical Univ. of Catalonia, Dept. of Signal Theory and Coun., 08034 Barcelona, Spain; b Stanford
More informationDesign of an Arrayed Waveguide Grating with flat spectral response
Design of an Arrayed Waveguide Grating with flat spectral response Thoas Kaalakis, Thoas Sphicopoulos and Diitris Syvridis (Departent of Inforatics and Telecounications, University of Athens, Panepistiiopolis,
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 informationTorsion System. Encoder #3 ( 3 ) Third encoder/disk for Model 205a only. Figure 1: ECP Torsion Experiment
Torsion Syste Introduction This lab experient studies dynaics of a torsional syste with single and ultiple degrees of freedo. The effects of various control configurations are studied in later part of
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 informationPhase Noise Modelling and Mitigation Techniques in OFDM Communications Systems
Phase Noise Modelling and Mitigation Techniques in OFDM Counications Systes Ville Syrjälä, Mikko Valkaa, Nikolay N. Tchaov, and Jukka Rinne Tapere University of Technology Departent of Counications Engineering
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 informationIMPROVEMENT OF FAR FIELD RADIATION PATTERN OF LINEAR ARRAY ANTENNA USING GENETIC ALGORITHM
ISSN: 2229-6948 (ONLINE) ICTACT JOURNAL OF COMMUNICATION TECHNOLOGY, MARCH 10, VOLUME: 01, ISSUE: 01 DOI: 10.21917/ijct.10.0004 IMPROVEMENT OF FAR FIELD RADIATION PATTERN OF LINEAR ARRAY ANTENNA USING
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 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 informationGroup Secret Key Generation in Wireless Networks: Algorithms and Rate Optimization
Group Secret Key Generation in Wireless Networks: Algoriths and Rate Optiization Peng Xu, Kanapathippillai Cuanan, Meber, IEEE, Zhiguo Ding, Senior, Meber, IEEE, Xuchu Dai and Kin K. Leung Fellow, IEEE
More information2. Continuous-wave modulation
. Continuous-wave odulation 1. Appliation goal We study representations in tie and frequeny doain for two types of ontinuous wave odulation: aplitude odulation (AM) and frequeny odulation (FM).. Continuous-wave
More informationDynamic Model Displacement for Model-mediated Teleoperation
Dynaic Model Displaceent for Model-ediated Teleoperation Xiao Xu Giulia Paggetti Eckehard Steinbach Institute for Media Technology, Technische Universität München, Munich, Gerany ABSTRACT In this paper,
More informationA Frequency Domain Approach to Design Constrained Amplitude Spreading Sequences for DS-CDMA Systems for Frequency Selective Fading Channels
A Frequency Doain Approach to Design Constrained Aplitude Spreading Sequences for DS-CDMA Systes for Frequency Selective Fading Channels B.J.Peiris, K.R.Narayanan and S.L. Miller Dept. of Electrical Engineering
More informationComparison Between PLAXIS Output and Neural Network in the Guard Walls
Coparison Between PLAXIS Output and Neural Network in the Guard Walls Ali Mahbod 1, Abdolghafar Ghorbani Pour 2, Abdollah Tabaroei 3, Sina Mokhtar 2 1- Departent of Civil Engineering, Shahid Bahonar University,
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 informationAnalysis on DV-Hop Algorithm and its variants by considering threshold
Analysis on DV-Hop Algorith and its variants by considering threshold Aanpreet Kaur 1, Pada Kuar 1, Govind P Gupta 2 1 Departent of Coputer Science & Engineering Jaypee Institute of Inforation Technology,
More informationPerformance of Multiuser MIMO System Employing Block Diagonalization with Antenna Selection at Mobile Stations
Perforance of Multiuser MIMO Syste Eploying Bloc Diagonalization with Antenna Selection at Mobile Stations Feng Wang, Mare E. Bialowsi School of Inforation Technology and Electrical Engineering The University
More informationAnalysis and Comparison of Time Replica and Time Linear Interpolation for Pilot Aided Channel Estimation in OFDM Systems
Int J Counications Networ and Syste Sciences 010 3 446-45 doi:10436/ijcns01035059 Published Online May 010 (http://wwwsciporg/journal/ijcns/) Analysis and Coparison of Tie eplica and Tie inear Interpolation
More informationAPPLICATION OF THE FAN-CHIRP TRANSFORM TO HYBRID SINUSOIDAL+NOISE MODELING OF POLYPHONIC AUDIO
6th European Signal Processing Conference (EUSIPCO 8), Lausanne, Switzerland, August 5-9, 8, copyright by EURASIP APPLICATION OF THE FAN-CHIRP TRANSFORM TO HYBRID SINUSOIDAL+NOISE MODELING OF POLYPHONIC
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 informationPREDICTING SOUND LEVELS BEHIND BUILDINGS - HOW MANY REFLECTIONS SHOULD I USE? Apex Acoustics Ltd, Gateshead, UK
PREDICTING SOUND LEVELS BEHIND BUILDINGS - HOW MANY REFLECTIONS SHOULD I USE? W Wei A Cooke J Havie-Clark Apex Acoustics Ltd, Gateshead, UK Apex Acoustics Ltd, Gateshead, UK Apex Acoustics Ltd, Gateshead,
More informationClamping of Switch Peak Voltage with Diode and Transformer at Output of Class E Amplifier for Renewable Energy Applications
adashi Suetsugu et al., Vol.3, No., 013 Claping of Switch Peak Voltage with Diode and ransforer at Output of Class E Aplifier for enewable Energy Applications adashi Suetsugu*, Xiuqin Wei * *Departent
More informationES 442 Homework #8 Solutions (Spring 2018 Due April 16, 2018 ) Print out homework and do work on the printed pages.. Problem 1 ASCII Code (20 points)
Hoework 8 NAME olutions E 44 Hoework #8 olutions (pring 018 Due April 16, 018 ) Print out hoework and do work on the printed pages.. Proble 1 ACII Code (0 points) he Aerican tandard Code for Inforation
More informationBoris Krnic Nov 15, ECE 1352F. Phase Noise of VCOs
Boris Krnic Nov 15, 93 187 13 ECE 135F Phase Noise of VCOs. ABSTRACT The ain purpose of this paper is to present siplified first order noise analysis techniques as applied to ring VCOs. The scarcity of
More informationDistributed Power Delivery for Energy Efficient and Low Power Systems
Distributed Power Delivery for Energy Efficient and Low Power Systes Selçuk Köse Departent of Electrical Engineering University of South Florida Tapa, Florida 33620 kose@usf.edu Eby G. Friedan Departent
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 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 informationESTIMATION OF OVERCOVERAGE IN THE CENSUS OF CANADA USING AN AUTOMATED APPROACH. Claude Julien, Statistics Canada Ottawa, Ontario, Canada K1A 0T6
ESTMATON OF OVERCOVERAGE N THE CENSUS OF CANADA USNG AN AUTOMATED APPROACH Claude Julien, Statistics Canada Ottawa, Ontario, Canada K1A 0T6 KEY WORDS: Coverage evaluation, two-phase design, stratification
More informationCross-correlation tracking for Maximum Length Sequence based acoustic localisation
Cross-correlation tracking for Maxiu Length Sequence based acoustic localisation Navinda Kottege Research School of Inforation Sciences and Engineering The Australian National University, ACT, Australia
More informationARCING HIGH IMPEDANCE FAULT DETECTION USING REAL CODED GENETIC ALGORITHM
ARCING HIGH IMPEDANCE FAULT DETECTION USING REAL CODED GENETIC ALGORITHM Naser Zaanan Jan Sykulski A. K. Al-Othan School of Electronics & School of Electronics & Coputer Science Dept. Electrical Engineering
More informationUniversity of Bristol - Explore Bristol Research. Peer reviewed version. Link to published version (if available): /ICC.2006.
Kaya, I., & Kocak, T. (2006). Energy-efficient pipelined bloo filters for network intrusion detection. IEEE International Conference on Counications, 5, 2382-2387. DOI: 10.1109/ICC.2006.255126 Peer reviewed
More information