Báo cáo hóa học: " Research Article Downlink Coexistence Performance Assessment and Techniques for WiMAX Services from High Altitude Platform and Terrestrial Deployments" pot
Báo cáo hóa học: " Research Article Downlink Coexistence Performance Assessment and Techniques for WiMAX Services from High Altitude Platform and Terrestrial Deployments" pot
... pagesdoi:10.1155/2008/291450 Research Article Downlink Coexistence Performance Assessment and Techniques for WiMAX Services from High Altitude Platform and Terrestrial DeploymentsZ. Yang,1A. Mohammed,1T. Hult,1 and ... ArnonWe investigate the performance and coexistence techniques for worldwide interoperability for microwave access (WiMAX) delivered from high altitude platforms (HAPs) and terrestrial systems in ... for wireless connections ranging from 2 to 66 GHz in frequency band [5]. Related research [6–8] has been carried out to examine the WiMAX downlink performance from an individual HAP system and...
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Báo cáo hóa học: " Research Article Evaluation of Different Power Saving Techniques for MBMS Services" pptx
... Watts for a 64 kbps service and to 13.4 Watts for a 128 kbps service.These high sums of power underline the need for using thistechnique.7.2. Usage of Longer TTI and Space Diversity. Fortunately,some ... 2009, Article ID 785927, 15 pagesdoi:10.1155/2009/785927 Research Article Evaluation of Different Power Saving Techniques for MBMS Services Antonios Alexiou,1, 2Christos Bouras,1, 2 and Vasileios ... power saving techniques and analyze their performance in terms of power consumption.We provide simulation results that reveal the amount of power that is saved and reinforce the need for the usage...
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báo cáo hóa học:" Research Article Strong Convergence to Common Fixed Points for Countable Families of Asymptotically Nonexpansive Mappings and Semigroups" ppt
... t<∞}, thenTtxn xn for all n and for all t>0. Hence 1/tntn0Tuxndu xn for all n and zn xnthen, 4.1 reduces to 4.11.12 Fixed Point Theory and Applications{tni},i ... first show that Cn1is closed and convex for all n ∈ N ∪{0}.FromtheLemma 2.5,itis observed that Cn1is closed and convex for each n ∈ N ∪{0}.Fixed Point Theory and Applications 9Since xn− ... Somyot Plubtieng for drawing my attention tothe subject and for many useful discussions and the referees for helpful suggestions thatimproved the contents of the paper. This research is supported...
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Báo cáo hóa học: " Research Article On the Performance of Kernel Methods for Skin Color Segmentation" pot
... Face and GestureRecognition, 2000.[11] M H. Yang and N. Ahuja, “Gaussian mixture model for humanskincoloranditsapplicationsinimageandvideodatabases,” in Conference on Storage and Retrieval for ... Nevertheless, performance for UdB was worse than for CdB. It canbe seen that under controlled acquisition conditions theresults obtained for the three color spaces showed the lowestHTER for = 1. Therefore, ... analyzed the performance of twoconventional skin detectors (GMM and MLP), and threekernel methods (binary SVM, and one-class hyperplane and hypersphere SVND algorithms).4.1. Experiments and Results....
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báo cáo hóa học:" Research Article Linear Classifier with Reject Option for the Detection of Vocal Fold Paralysis and Vocal Fold Edema" doc
... of the speech productionsystem for male and female speakers and the higher accuracy for speech emotion recognition, speaker indexing, speakerrecognition, and so forth, offered by the gender-dependentmodels ... and the findings of objective analysis is generallysought for [19, 20].Several techniques for the detection and classification ofvoice pathologies by means of acoustic analysis, parametric and ... perturbations (shimmer) and estimate the Harmonic to Noise Ratio at differentfrequency bands and the critical-band energy spectrum byemploying either short-term Discrete Fourier Transform and cepstral...
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Báo cáo hóa học: " Research Article Probabilistic Coexistence and Throughput of Cognitive Dual-Polarized Networks" doc
... system-level performance. The parameter value ν = 0and > 0 correspond to narrowbandscenarios and wideband scenario, respectively.6 EURASIP Journal on Wireless Communications and NetworkingNo ... positive and, therefore, one obtains thatqmax≤ ε1+XPD(d)θP0Pdd0α=q⊥max, (20)where the right-hand side expression for q⊥maxderives directly from (18). Therefore, ... the values of interest for XPDmin0(with a 80%level of confidence) are 8.91 dB and 1.8 dB for horizontal and vertical polarizations, respectively.In Figure 12, the performance of these half-duplexsystems...
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Báo cáo hóa học: "Research Article Downlink Multicell Processing with Limited-Backhaul Capacity" ppt
... derived in closed-form and compared with an upper bound. Performance is also evaluated in asymptotic regimes of interest (high backhaul capacity and extreme signal-to-noise ratio, SNR) and further ... transmitters/receivers, and so forth, (see, e.g., [4–6]). While the formermodelling provides basic analytical and theoretical insightinto the network performance and optimal operation, thelatter ... Rlocal(15)isacontinuous function of α for α≥ 0.6.1. Performance in Asymptotic Regimes. High BackhaulCapacity.ForC→∞,wehaveRlocal→ log2(1+P) <Rub(as for Rseq and Rjoint), which corresponds...
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Báo cáo hóa học: " Research Article Downlink Resource Allocation for Autonomous Infrastructure-based Multihop Cellular Networks" pdf
... forwarding traffic. We also refer to the transmissionon the regular FDD bands as in-band forwarding, and thetransmission on an additional unlicensed band as out-of-band forwarding. In-band forwarding ... architecture for a networkutilizing the out-of-band transmission for the forwardingtraffic along with TDS for the access traffic for the jointoptimization of the degree of the multihop, routing path, and ... effective modeling for the joint base-station/relay assignment,rate allocation, and routing scheme is proposed and formulated under a single problem for the downlink. This problem is thenformulated...
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Báo cáo hóa học: "Research Article Downlink Assisted Uplink Zero Forcing for TDD Multiuser MIMO Systems" docx
... Journal on Wireless Communications and NetworkingVolume 2009, Article ID 894726, 11 pagesdoi:10.1155/2009/894726 Research Article Downlink Assisted Uplink Zero Forcing for TDD MultiuserMIMO SystemsPetri ... pilotDemodulation and beam allocation pilotData Data Data···(b)Figure 3: Simplified TDD frame and pilot structure needed for (a)UL beamforming, (b) UL/DL beamforming.zero forcing multiplexing, and assuming ... manner and employs downlink (DL) pilot signals to convey the information of the beamselection and beamformers to be used by the terminals. When coexisting with the DL transmit-receive zero forcing,...
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Báo cáo hóa học: " Research Article Power-Controlled CDMA Cell Sectorization with Multiuser Detection: A Comprehensive Analysis on Uplink and Downlink" doc
... with random sig-nature for uplink and downlink; uniform terminal distribution.Figures 6, 7, 8 ,and9 show uplink and downlink sectorboundaries for uniform and nonuniform user distributions,respectively. ... the optimumsectorization for uplink and downlink with random signa-tures and single path, for uniform and nonuniform user dis-tributions over the cell. Tables 1 and 2 show the correspond-ing ... assumption of iden-tical channel gains for uplink and downlink between eachuser and base station, the condition for feasibility of the up-link and the downlink power control problems is the...
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