single mode fibers for communications
Tài liệu ComProtect® Solid-State Single-Pair Protectors for Series 2 Switching Blocks docx
Ngày tải lên :
10/12/2013, 18:15
... Solid-State Single- Pair Protectors for Series Switching Blocks Features: • Meets applicable GR-974-CORE, GR-78-CORE and GR-63-CORE standards • Meets UL 497 standard for paired conductor communications ... contaminants • Meets all standards for uncontrolled environments including salt-fog, rain, fungus, airborne contaminants and aging Also meets standards for environmental cycling for impulse and AC surges ... Telecommunications, Inc views its patent portfolio as an important corporate asset and vigorously enforces its patents Products or features contained herein may be covered by one or more U.S or foreign...
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ULTRA-WIDEBAND RADIO TECHNOLOGIES FOR COMMUNICATIONS, LOCALIZATION AND SENSOR APPLICATIONS ppt
Ngày tải lên :
16/03/2014, 12:20
... the Ph.D with honours from the former GerhardMercator University Duisburg in 1983 He was awarded for both degrees He then worked for Dräger in Lübeck for years before he returned to University ... (Including Personal) Communications and COST259 Wireless Flexible Personalized Communications For the Carl Cranz Series for Scientific Education he served as a lecturer for Wave Propagation He ... function f Y | A (·| am ) has the form (6) There does not exist a closed form for the distribution function in general But for D ∈ Z + it can also be solved in closed form with the help of the Marcum-Q...
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Báo cáo khoa học: "A Unified Single Scan Algorithm for Japanese Base Phrase Chunking and Dependency Parsing" pdf
Ngày tải lên :
17/03/2014, 02:20
... yields comparable performance with even a single scan of a sentence for dependency parsing in addition to bunsetsu chunking According to the results in Table 2, we suppose that performance of our ... code for base phrase chunking and dependency parsing 4.2 Pseudo Code for the Proposed Algorithm The algorithm that we propose is based on (Sassano, 2004), which is considered to be a simple form ... Acc Both for further details Experiments and Discussion 5.1 Experimental Set-up Corpus For evaluation, we used the Kyoto University Corpus Version (Kurohashi and Nagao, 1998) The split for training/test/development...
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STATE OF OREGON STATEWIDE SINGLE AUDIT REPORT FOR THE FISCAL YEAR ENDED JUNE 30, 2011 doc
Ngày tải lên :
23/03/2014, 04:20
... fund information of the State of Oregon, as of and for the year ended June 30, 2011, and have issued our report thereon dated January 17, 2012 Our audit was performed for the purpose of forming ... Communities 10.675 Urban and Community Forestry Program 10.676 Forest Legacy Program 10.678 Forest Stewardship Program 10.679 Collaborative Forest Restoration 10.680 Forest Health Protection 10.687 ... Program for Neglected and Delinquent Children and Youth 84.015 National Resource Centers Program for Foreign Language and Area Studies or Foreign Language and International Studies Program and Foreign...
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Random Signals for Communications and Signal Processing
Ngày tải lên :
10/06/2014, 09:29
... distributions ¨ Solve for the distributions of random variable arising from certain functions of random variables ¨ Model datasets arising in communications using common probabilistic models ¨ Analyze ... Signal Modeling Wiener Filters Spectrum Estimation Adaptive Filters Applications in Communications and Signal Processing Textbook: M H Hayes, Statistical Digital Signal Processing and Modeling, ... on communication signals ¨ Model and analyze the linear systems using multivariate Gaussian distributions ¨ Design statistical signal processing systems for communications applications ¨ ...
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Báo cáo toán học: " Pyramid-based image empirical mode decomposition for the fusion of multispectral and panchromatic images" pptx
Ngày tải lên :
20/06/2014, 20:20
... includes the Wavelet transform [7], empirical mode decomposition (EMD) [8], parameterized logarithmic image processing [9], as well as other methods The Wavelet approach transforms the original images ... frequency layers before replacing the high frequency of MS image with those that are from panchromatic image Then, an inverse Wavelet transform is selected to construct the mixed layers for image fusion ... represents the information in an image This index shows the overall detailed information of the image The entropy equation is shown in (13) The greater the entropy of a fused image, the more information...
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Báo cáo hóa học: " Research Article Multivariate Empirical Mode Decomposition for Quantifying Multivariate Phase Synchronization" doc
Ngày tải lên :
21/06/2014, 09:20
... the same mode for all oscillators For each network, 50 simulations are performed with additive white Gaussian noise at a SNR value of dB Table shows the mean and standard deviation values for all ... frequencies In this paper, we propose to use a recently developed transform, multivariate empirical mode decomposition (MEMD), for quantifying the phase synchrony between multiple time series EMD ... Hilbert transform can be used to obtain highly localized phase information Thus, EMD can act as a prefiltering tool for the Hilbert transform-based phase synchrony analysis In previous applications...
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Báo cáo hóa học: "Research Article Mode Switching for the Multi-Antenna Broadcast Channel Based on Delay and Channel Quantization" pot
Ngày tải lên :
21/06/2014, 20:20
... calculated mode switching points for different parameters, we plot the operating regions for both SU and MU modes The active mode for the given parameter and the condition to activate each mode can ... interference, for which an SU/MU mode switching algorithm is proposed We derive accurate closed-form approximations for the ergodic rates for both SU and MU modes, which are then used to calculate the mode ... system model and some assumptions are presented in Section The transmission techniques for both SU and MU-MIMO modes are described in Section The rate analysis for both SU and MU modes and the mode...
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Báo cáo hóa học: " Narrow ridge waveguide high power single mode 1.3-lm InAs/InGaAs ten-layer quantum dot lasers" pptx
Ngày tải lên :
22/06/2014, 18:20
... 2:303–307 performance in terms of light output, beam quality and high-temperature operation have been demonstrated [18– 20] Comparatively, fewer works have been reported on single mode operation ... performance [31] Furthermore, mode hopping is expected to be more pronounced in narrow ridge structures where the crosssectional area is relatively small More detailed investigation on the mode ... recombination [22] tends to degrade the laser performance Undesirable lateral current spreading resulting from sidewall effects have been investigated for improving the laser structure design [22–24]...
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Báo cáo hóa học: " Research Article Comparison of OQPSK and CPM for Communications at 60 GHz with a Nonideal Front End" docx
Ngày tải lên :
22/06/2014, 19:20
... effect of quantization due to the ADC for CPM modulation For a BER of 10−3 , the performance degradation is about dB for an ADC with bits With an additional bit, performance degradation becomes negligible ... modulation scheme, for which a nonlinear PA with less backoff can be used, thus increasing the power efficiency of the system 4.2 System model Our system model is inspired from the model of Wang and ... Simulation results are represented in Figure 12 For a BER of 10−3 , the performance degradation is about dB for an integrated PSD of −16 dBc However, the performance can be improved by dB when the integrated...
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Báo cáo hóa học: "Single step process for the synthesis of carbon nanotubes and metal/alloy-filled multiwalled carbon nanotubes" docx
Ngày tải lên :
22/06/2014, 22:20
... Raman spectra for SWNTs show the presence of RBM, at 388.9 cm–1, in addition to the G- and Dbands The increase in the intensity of D-band for Nifilled MWNTs is due to the non-uniform filling of ... route by performing several cycles of hydrogenation/dehydrogenation of the alloy using a Seiverts apparatus [17] The growth of carbon nanostructures has been carried out using a single- stage ... carried out for 30 Methane flow was stopped and the furnace was cooled to room temperature Argon flow was maintained through out the experiment (1 bar, 200 sccm) Hydrogen generated was collected for at...
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Báo cáo hóa học: " Research Article Comparison of OQPSK and CPM for Communications at 60 GHz with a Nonideal Front End" doc
Ngày tải lên :
22/06/2014, 22:20
... effect of quantization due to the ADC for CPM modulation For a BER of 10−3 , the performance degradation is about dB for an ADC with bits With an additional bit, performance degradation becomes negligible ... modulation scheme, for which a nonlinear PA with less backoff can be used, thus increasing the power efficiency of the system 4.2 System model Our system model is inspired from the model of Wang and ... Simulation results are represented in Figure 12 For a BER of 10−3 , the performance degradation is about dB for an integrated PSD of −16 dBc However, the performance can be improved by dB when the integrated...
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Báo cáo hóa học: " End-to-End Rate-Distortion Optimized MD Mode Selection for Multiple Description Video Coding" doc
Ngày tải lên :
22/06/2014, 23:20
... that additional MD modes of interest may be straightforwardly incorporated into the adaptive MD encoding framework and the associated models for determining the optimized MD mode selection In ... methods, ADAPT is able to outperform optimized SD coding by up to dB for the Foreman sequence and about 0.5 dB for the Carphone sequence The ADAPT method is able to outperform the STD coding approach ... we use a twostate Gilbert loss model, but the same approach could be used for any multistate loss model including those with fixed burst lengths We use the Gilbert model to simulate the nature of...
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Báo cáo hóa học: "Spatial-Mode Selection for the Joint Transmit and Receive MMSE Design" doc
Ngày tải lên :
23/06/2014, 01:20
... performance and over 100 channels for the coded performance For each channel, at least 10 bit errors were counted for each Eb /N0 value, where Eb /N0 stands for the average receive energy per ... these two strongest modes while using a lower constellation on the second mode to reduce its impact on the BER, whereas spatial -mode selection has to stick to the single- mode transmission with ... receive Eb /N0 (dB) Conventional mode SNRconv1 Conventional mode SNRconv2 SNReven-MSE Conventional + MRC Conventional mode SNRconv1 Conventional mode SNRconv2 Conventional mode SNRconv3 SNReven-MSE...
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Designing Optical Fibers for WDM Applications docx
Ngày tải lên :
27/06/2014, 14:20
... Therefore l− = ( D+l+ / − D− ) l − to be small, D − Should be LARGE Example: At 1550 nm for a SMF* : Dispersion coefficient ~ 17 ps/km-nm Total dispersion ~ 1700 ps/nm for 100 km of SMF IF, for ... Area ? Dispersion +D NZDSF DSF D NZDSF 1550 nm C-Band L-Band DSF : # Only for single wavelength transmission at 1550 nm – For DWDM application – NOT SUITABLE # Nonlinear phenomena like Four Wave ... public-domain specifications at the vendor's Zero Dispersion Slope < 0.092 ps/km-nm^2 web-site (for vendor information, please contact Optiwave Corporation) Simpo PDF Merge and Split Unregistered Version...
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low speed laser welding of aluminium alloys using single mode fiber lasers
Ngày tải lên :
27/07/2014, 23:31
... compared to 61 percent for MIG welding www.intechopen.com 52 Laser Welding 2.4 Single- Mode High Power Fiber Lasers The power source used in this study is a 300 W, Single- Mode, Ytterbium Fiber ... (Industrial Laser Solutions, 2005) Fig Beam mode measurement of a 300 W, CW, single- mode fiber laser, provided by IPG, Inc A comparison of a high power single- mode fiber laser and other major industrial ... welding of aluminium alloys using single- mode iber lasers 55 Low Speed Laser Welding of Aluminium 3.1 Modeling of an Idealized Welding Process A 2-D heat conduction model for laser welding is reported...
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Designing Optical Fibers for WDM Applications phần 1 potx
Ngày tải lên :
06/08/2014, 00:21
... DCF Highest Negative DCF DCF for Broadband Applications Non Zero Dispersion Shifted Fiber with Large Effective Area (+D NZDSF) Non Zero, Negative Dispersion Fiber for Metropolitan Network (-D ... Optical Systems Group delay Group velocity dispersion Dispersion slope Effective area (For specific fiber vendor information, please contact Optiwave Corporation) Fiber Parameters Core Radius : 4.07 ... public-domain specifications at the vendor's Zero Dispersion Slope < 0.092 ps/km-nm^2 web-site (for vendor information, please contact Optiwave Corporation) Simulation Parameters to Design an Optical...
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Designing Optical Fibers for WDM Applications phần 2 pdf
Ngày tải lên :
06/08/2014, 00:21
... small, D − Should be LARGE Example: At 1550 nm for a SMF* : Dispersion coefficient ~ 17 ps/km-nm Total dispersion ~ 1700 ps/nm for 100 km of SMF IF, for a DCF , Dispersion coefficient ~ -17 ps/km-nm ... Area ? Dispersion +D NZDSF DSF D NZDSF 1550 nm C-Band L-Band DSF : # Only for single wavelength transmission at 1550 nm – For DWDM application – NOT SUITABLE # Nonlinear phenomena like Four Wave ... Dispersion coefficient ~ -17 ps/km-nm Requires 100 km of DCF Increases system cost * For specific fiber vendor information, please contact Optiwave Corporation Fiber_CAD Electronics Letters, Vol...
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Designing Optical Fibers for WDM Applications phần 3 pdf
Ngày tải lên :
06/08/2014, 00:21
... of the fiber were taken from the public-domain specifications at the vendor’s website For vendor specific information, please contact Optiwave Corporation Why (-D) NZDSF ? Dispersion +D NZDSF ... of the fiber were taken from the public-domain specifications at the vendor’s website For vendor specific information, please contact Optiwave Corporation Conclusion • Commercial fiber data sheets ... wavelength Therefore it is not possible to simulate a WDM optical system which require these data at several wavelengths • However, an understanding can be developed by simulating these data for a fiber...
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