Báo cáo hóa học: " Research Article Bandwidth Optimization in Centralized WLANs for Different Traffic Types" pdf
Báo cáo hóa học: " Research Article Bandwidth Optimization in Centralized WLANs for Different Traffic Types" pdf
... LiAllocating bandwidth between different forms of coexisting traffic (such as web-browsing, streaming, and telephony) within awireless LAN is a challeng ing and interesting problem. Centralized coordination ... Article Bandwidth Optimization in Centralized WLANs for Different Traffic TypesR. J. Haines, N. Fanning, T. Lewis, and J. CoonTelecommunications Research Laboratory, Toshiba Research Europe Ltd., ... following two inequalities:CFPMIN≤ xy,CPMIN≤ (1 − x)y = y − xy.(9)These are obtained by rearranging the first two inequal-ities of the original problem statement. Solving the secondinequality...
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Báo cáo hóa học: "Research Article Delay Optimization in Cooperative Relaying with Cyclic Delay Diversity" docx
... sub-carrierChannel for user 1 after schedulingChannel for user 2 after schedulingChannel for user 3 after schedulingChannel for user 4 after schedulingChannel for user 5 after schedulingFigure 8: ... focused in this paper on the delay optimization withlimited feedback only relying on the strongest path. Oneof the interesting points is to investigate how the feedbackaffects the system performance ... An optimal delay allocationapproach using coherent combining in large-scale coop-erative relaying networks was introduced in [6], but it iswell suited for unlimited feedback communications...
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báo cáo hóa học:" Research Article Exponential Stability and Global Attractors for a Thermoelastic Bresse System" pdf
... in infinite dimensions,” in Nonlinear DifferentialEquations, J. Hale and P. Martinez-Amores, Eds., vol. 132, pp. 1–42, Pitman, Boston, Mass, USA, 1985.Advances in Difference Equations 11Setting ... stands for L2-inner product on L2. In particular, V−1 H−1, V0 L2,andV1 H10. The injection Vs1→ Vs2is compactwhenever s1>s2. For further convenience, for s ∈ R, introduce ... this damping depends on t he type of couplingand the wave speeds. When the wave speeds are the same E G, the indirect damping isactually strong enough to induce exponential stability for the...
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Báo cáo hóa học: " Research Article Prefiltering-Based Interference Suppression for Time-Hopping Multiuser UWB" pdf
... P)−P)(17)Hindawi Publishing CorporationEURASIP Journal on Advances in Signal ProcessingVolume 2009, Article ID 617298, 10 pagesdoi:10.1155/2009/617298 Research Article Prefiltering-Based Interference ... and H. Liu, “Prerake diversity combining for pulsed UWB systems considering realistic channels with pulseoverlapping and narrow-band interference,” in Proceedingsof the IEEE Global Telecommunications ... freedom to suppress the interference. In other words, (15) becomes an overdetermined system. It isgenerally impossible to obtain exact solution. By minimizingthe least-squares (minimum distance) criterion...
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Báo cáo hóa học: " Research Article Fixed Points in Discrete Models for Regulatory Genetic Networks" pot
... expression of insulin-likegrowth factor binding protein 2 (IGFBP2) occurring only in high-grade brain tumors. It can be assumed that geneexpression events were initiated at some stages in low-leveltumors ... models. In the Boolean model,Hindawi Publishing CorporationEURASIP Journal on Bioinformatics and Systems BiologyVolume 2007, Article ID 97356, 8 pagesdoi:10.1155/2007/97356 Research Article Fixed ... evaluating apolynomial in n variables over a finite field Fqis O(qn/n).The complexity of evaluating f in all of its n coordinates isthus O(qn) and the complexity of evaluating f in all pointsof...
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Báo cáo hóa học: " Research Article Bandwidth-Efficient Cooperative Relaying Schemes with Multiantenna Relay" pptx
... signals before forwardingprocessed signals to the destination in another phase. Thedestination can use maximum ratio combining in bothphases to recover the original information. In [7–11], ... is interleaved before being re-encoded [8]) so that the destination can use code combiningtechniques such as iterative decoding to recover the originalinformation. Coded cooperative relaying ... at the destination. In addition, instead of demodulate-and-forward and zero-forcing detection as in [15], we explore the proposed colo-cated multiantenna relaying and code combining structuresto...
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Báo cáo hóa học: " Research Article Bandwidth Impacts of Localizing Peer-to-Peer IP Video Traffic in Access and Aggregation Networks" ppt
... P2Psystems are emerging for streaming linear broadcast TV viaapplication-layer multicast [5].2.1. Limiting the impact of P2PTechnical solutions to P2P bandwidth usage include addingmore network ... on ADSL,” in Proceedings of the 2ndConference on Next Generation Internet Design and Engineering(NGI ’06), pp. 255–262, Valencia, Spain, April 2006.[11] V. Janardhan and H. Schulzrinne, “Peer ... trafficwasvideoinMicrosoftformats. 65% of all audio files by volume of trafficwerestilltraded in the MP3 format, and 12.3% were in the open-source OGG file format used by BitTorrent.Video P2P poses unique bandwidth...
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Báo cáo hóa học: " Research Article Performance Optimization for Delay-Tolerant and Contention-Based Application in IEEE 802.16 Networks" pptx
... request uplink bandwidth before transmittingdata in a corresponding bandwidth grant. This means thatif an SS wants to do uplink transmission, it first sends arequest to BS during the polling interval. ... UL-MAP contain the correlativeinformation of the intervals’ usage in the following downlinkand uplink subframes, respectively, and are broadcast to allSSs. The following downlink bursts carry ... any grants in apredefined time. Finally, the SSs transmit uplink data duringthe corresponding allocated intervals. For ease of analysis, we assume the following.(i) The number of SSs in system...
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Báo cáo hóa học: " Research Article Reed-Solomon Turbo Product Codes for Optical Communications: From Code Optimization to Decoder Design" docx
... binary BCH codes yields a binary BCHproduct code.Starting from a K1× K2information matrix, systematicencoding of P is easily accomplished by first encoding the K1information rows using ... used for BCH codes since it increases mini-mum distance without increasing decoding complexity nordecreasing significantly the code rate, in contrast to RScodes. Both eBCH TPCs have minimum ... high-coding gain. BER requirementsare less stringent than for OTN and are typically of the orderof 10−11. High-coding gains result in increased link budget[20]. On the other hand, decoding complexity...
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Báo cáo hóa học: "Research Article Feedback Reduction in Uplink MIMO OFDM Systems by Chunk Optimization" doc
... 0. By insert-ing the optimal decoding order into (8) and collecting twosucceeding terms in the sum, we obtain the programmingproblem in (3).The optimization problem (3) is a convex -optimization problem ... users perform single-stream beamform-ing or spatial multiplexing. For the channel realizationfrom Figure 9, only one user performs spatial multiplexingwhereas all other users perform single-stream ... rate optimization of theMIMO OFDM MAC under individual power constraints andunder chunk constraints. In order to reduce the feedbackoverhead by informing the mobiles of their linear precodingmatrices,...
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