Báo cáo hóa học: " Research Article Opportunistic Spectrum Access in Self-Similar Primary Traffic" docx

... behind. Instead of deleting messages on transmission, CHARON retains them in a special state that does not allow further forwarding, except in the case that the node meets a sink. Messages in ... two LEGO Mindstorms NXT robots are attached to a hanging EURASIP Journal on Wireless Communications and Networking 19 Interesting topics for future research include the use of message integri...

Ngày tải lên: 21/06/2014, 11:20

... communication in intermittent network connectivity scenarios. Concerning the network layer, two routing approaches are common in opportunistic scenarios: forwarding and flooding. In forwarding, intermediate ... to derive interesting design guidelines on the convenience and applicability of such approaches. 1. Introduction Opportunistic networking has attracted the interest of researc...

Ngày tải lên: 21/06/2014, 11:20

... scheme in a dynamic spectrum sharing system consisting of single primary and secondary users. We considered a spectrum sharing scenario, where the secondary user can operate within the primary ... Model Adopting the spectrum- sharing scenario used in [9], we consider a spectrum- sharing system consisting of single primary and secondary users. The secondary user is allowed to o...

Ngày tải lên: 21/06/2014, 11:20

... elements in M bins putting j n elements in bin number n. Finally, including constraint (A.10)weobtain expression (A.13) F Z ( R ) = M  i=1 P{A ∩ B i } = 1  j 1 =0 M − j 1  j M =1 min(2 − j 1 ,M− ... scheduling solution proposed in [10]. According to this solution, sinks are ordered from 1toM with increasing channel quality. The M − v +1 information sources aiming to transmit to the M...

Ngày tải lên: 21/06/2014, 11:20

... pages doi:10.1155/2010/595431 Research Article Opportunistic Multicasting Scheduling Using Erasure-Correction Coding over Wireless Channels Quang Le-Dang and Tho Le-Ngoc Department of Electrical and Computer Engineering, ... However, since there is a correlation in channel gains among the subcarriers, deep fade on one subcarrier may result in insufficient instantaneous SNR on neighbou...

Ngày tải lên: 21/06/2014, 11:20

... studied integral inequalities useful in the theory of partial dynamic equations on time scales, as far as we know. In this paper, we investigate some nonlinear integral inequalities in two independent ... cited. We investigate some nonlinear integral inequalities in two independent variables on time scales. Our results unify and extend some integral inequalities and their correspondin...

Ngày tải lên: 21/06/2014, 05:20

... signal in thepresenceofMC. 2. 2-D Direct Data Domain Algorithm Consider a URA consisting of N × P equally spaced elements with the spacing of d x in rows (in the x direction) and d y in columns (in ... [13–16]. The approach is to adaptively minimize the interference power while maintaining the array gain in the direction of the signal. The sample support problem is eliminated by .....

Ngày tải lên: 21/06/2014, 05:20

... paper is organized in the following way. In Section 2, we present some lemmas, which will be used in Section 3. The main results and proofs are given in Section 3. Finally, in Section 4, we give ... β  u  >a 0  /  ∅. 3.48 Hindawi Publishing Corporation Advances in Difference Equations Volume 2011, Article ID 894135, 20 pages doi:10.1155/2011/894135 Research Article S...

Ngày tải lên: 21/06/2014, 05:20

... solutions to a class of the Hammerstein integral equations. 1. Introduction and Preliminary In 1, 2, C ollatz divided the typical problems in computation mathematics into five classes, and the first ... Lakshmikantham, Nonlinear Problems in Abstract Cones, vol. 5 of Notes and Reports in Mathematics in Science and Engineering, Academic Press, Boston, Mass, USA, 1988. 4 D. Guo, Nonl...

Ngày tải lên: 21/06/2014, 07:20

... van den Bergh and A. P. Engelbrecht, “Training product unit networks using cooperative particle swarm optimisers,” in Proceedings of the International Joint Conference on Neural Networks (IJCNN ... R, keeping N,and α fixed. Finally we varied α, keeping instead N and R fixed. The parameters of the camera networks are shown in Tab le 2, the results are illustrated in Figure 5. The main resu...

Ngày tải lên: 21/06/2014, 08:20