Báo cáo hóa học: "Research Article Achievable Rates and Resource Allocation Strategies for Imperfectly Known Fading Relay Channels" doc

... Communications and NetworkingVolume 2009, Article ID 458236, 16 pagesdoi:10.1155/2009/458236Research Article Achievable Rates and Resource Allocation Strategies for Imperfectly Known Fading Relay ChannelsJunwei ... Accepted 19 October 2009Recommended by Michael Gastpar Achievable rates and resource allocation strategies for imperfectly known fading relay channels are studied. It is assumed thatcommunication ... three resource allocation problems: (1) power allocation between data and training symbols, (2)time/bandwidth allocation to the relay, and (3) power allocation between the source and relay in...

Báo cáo hóa học: " Research Article Achievable Rates and Scaling Laws for Cognitive Radio Channels" pdf

... Communications and NetworkingVolume 2008, Article ID 896246, 12 pagesdoi:10.1155/2008/896246Research Article Achievable Rates and Scaling Laws for Cognitive Radio ChannelsNatasha Devroye, Mai Vu, and ... Host-Madsen and J. Zhang, “Capacity bounds and power allocation for wireless relay channels,” IEEE Transactions onInformation Theory, vol. 51, no. 6, pp. 2020–2040, 2005.[28] N. Devroye and M. Sharif, ... R0 and the guard band according to (22 )for = 1, P = 1, P0= 100, σ2=1, β = 0.1, and α = 4.In Figure 7, we plot the relation between the exclusive re-gion radius R0 and the guard-band...

Báo cáo hóa học: " Research Article Performance Analysis of SSC Diversity Receivers over Correlated Ricean Fading Satellite Channels" doc

... Pout,ABEP1,andC and will be presented for diﬀerent Riceanchannel conditions, that is, diﬀerent values for K and ρ,aswell as for various modulation schemes.In Figures 1 and 2 the normalized ... γ/ log2M, for severalvalues of K. Figure 3 considers the performance of DBPSK,BPSK, and M-ary PSK signaling formats and ρ= 0.5. Asexpected, when K increases, the ABEP improves and BPSKexhibits ... normalizedoutage threshold per bit, γth/γb, for several values of K and ρ. These performance results have been obtained by numer-ically evaluating (10), (11), and (21)andforρ= 0 they areidentical to the...

Báo cáo hóa học: " Research Article Meta-Model and UML Proﬁle for Requirements Management of Software and Embedded Systems" pot

... models can be built using for examplethe standard proﬁle for Modeling and Analysis of Real-TimeEmbedded system (MARTE) [24], proﬁle for Schedulability,Performance and Time (SPT) [25], or some ... 5 and foremost vehicle in communicating requirements tosystem developers who use it as the basis for design and veriﬁcation. For this reason, it is important that there is acommon understanding ... Zhu and I. Gorton, “UML proﬁles for design decisions and non-functional requirements,” in Proceedings of the Workshopon SHAring and Reusing Architectural Knowledge Architecture,Rationale, and...

Báo cáo hóa học: "Research Article Design of an Omnidirectional Multibeam Transmitter for High-Speed Indoor Wireless Communications" doc

... responseprovide us the frequency response and channel bandwidth for conﬁguration D and E as shown in Figure 12. The 3 dBbandwidth for conﬁguration D and E were about 38 MHz and 40 MHz, respectively, indicating ... Djahani and Kahn [13, 22]haveusedmultibeam(quasidiﬀusive) transmitters and imaging diversity receiversto improve the link performance for both LOS and non-LOS IR links. The link performance ... whichare 24, 23, 20, 16, 12, 6, and 1 for elevations angles of 0◦,15◦,30◦,45◦,60◦,75◦ ,and9 0◦, respectively. We have studied theperformance for both LOS link and diﬀuse link with theseﬁve...

báo cáo hóa học:" Research Article Hardy-Littlewood and Caccioppoli-Type Inequalities for A-Harmonic Tensors" pdf

... Inequalities and ApplicationsVolume 2010, Article ID 351597, 14 pagesdoi:10.1155/2010/351597Research Article Hardy-Littlewood and Caccioppoli-TypeInequalities for A-Harmonic TensorsPeilin Shi1 and ... Inequalities and ApplicationsReferences1 R. P. Agarwal, S. Ding, and C. Nolder, Inequalities for Diﬀerential Forms, Springer, New York, NY, USA,2009.2 S. Ding, “Lipschitz and BMO norm ... C1diamB−1u − ct,σBBwλ1dxα/s3.4 for all balls B with σB ⊂ Ω and all closed forms c. Since c is a closed form and u is an A-harmonic tensor, then u − c is still an A-harmonic...

báo cáo hóa học:" Research Article Local Regularity and Local Boundedness Results for Very Weak Solutions of Obstacle Problems" pot

... Bensoussan and Frehse. Meyers and Elcrat 5 ﬁrst considered the higher integrability for weak solutions of 1.1 in 1975; see also 6. Iwaniec and Sbordone 1 obtained the regularityresult for very ... deﬁnition for very weak solutions of obstacle problem of A-harmonic1.1 and obtained the local and global higher integrability results. The local regularity results for minima of functionals and ... Qiao, Y. Wang, and Y. Chu, “Local regularity results for minima of anisotropic functionals and solutions of anisotropic equations,” Journal of Inequalities and Applications, vol. 2008, Article ID835736,...

báo cáo hóa học:" Research Article An Optimal Adaptive Network Coding Scheme for Minimizing Decoding Delay in Broadcast " doc

... optimalschemestodealwithsucherasuresarefountaincodes[1] and random linear network codes (RLNC) [2]. In the latterscheme, for example, the source transmits random linearmixturesofallthepacketstobedelivered.Itiswell -known that if the random ... is dispatched from thecenter in a packet. For coordination purposes, each agentneeds to know its own and other agents’ commands. There-fore, commands are broadcast to everyone in the network. ... processing/execution of commandsmay not be a real issue. However, fast command executionmay be crucial and therefore, it is imperative that innovativepackets arrive and get decoded at the destinations...

Báo cáo hóa học: " Research Article Connectivity-Based Reliable Multicast MAC Protocol for IEEE 802.11 Wireless LANs" doc

... results of the multicast throughputs ofthe BMMM and our reliable MAC protocols for n=20, 40, 60, 80, and 100, and p = 0.1%, 1%, 2% and 5% inFigures 1 and 2 where the dotted lines represent the ... 2003.[2] S. Choi and K. Choi, “Reliable multicast for wireless LAN,”in Resource, Mobility, and Security Management in WirelessNetworks and Mobile Communications, Y. Zhang, H. Hu, and M. Fujise, ... Communications and Networkingreliable multicast MAC protocol increases the throughput byabout 60% and 27% with the user payloads of 88 bits and 1000 bits, respectively.5. Conclusions For a bandwidth-eﬃcient...

Báo cáo hóa học: "Research Article Fully Decentralized and Collaborative Multilateration Primitives for Uniquely Localizing WSNs" doc

... localized nodes grows, thereforeit constitutes a good candidate for the seed set. However, for the initial iterations we try every possible triple as a candidate for the seeds and take the maximum ... circles for r = 1, dashes for r= 2, diamonds for r = 3, and gray circles are unlocalizable.are declared as anchors. The experiments are run for r, kvalues, where r varies from 1 to 8, and k ... (46.23%)Localized for r= 1(26.13%)Localized for r= 2(46.23%Localized for r= 3 (154.77%)Anchor (12.6%)Figure 3: Random network with n = 200 and k = 6. Squares arelocalized for r= 0 (anchors),...

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