Báo cáo hóa học: " Research Article How to Solve the Problem of Bad Performance of Cooperative Protocols at Low SNR Charlotte Hucher, Ghaya Rekaya-Ben Othman, and Jean-Claude Belfiore" potx

... pages doi:10.1155/2008/243153 Research Article How to Solve the Problem of Bad Performance of Cooperative Protocols at Low SNR Charlotte Hucher, Ghaya Rekaya-Ben Othman, and Jean-Claude Belfiore Ecole Nationale Superieure ... cooperation). Outage probabilities and simulation results show that the adaptive cooperation protocols solve the...

Ngày tải lên: 22/06/2014, 19:20

... capable of acquiring the frequency-hopping pattern, signature sequence and time synchronization of the user. The output of the frequency dehopper in the receiver enters the despreader and then the ... at mainlobe and a at sidelobe is developed. The width of the mainlobe and the height of the sidelobe are calculated based on the first moment and th...

Ngày tải lên: 21/06/2014, 19:20

... the proof. Acknowledgments The authors would like to thank the referee and the editor for their careful reading of the manuscript and their many valuable comments and suggestions. The research ... The proof of uniqueness is the same to that of Theorem 2.1. Therefore, {x n } converges to the unique common fixed point of S and T. Corollary 2.4. Let E be...

Ngày tải lên: 21/06/2014, 20:20

... to reach further than the filter slopes of the corresponding subband split filter. We had to find a compromise between setting the band limits of the band-stop filtering far outside the subband of ... multiple subbands [1], a systematic test procedure should measure the attenuation in each of them separately. It is therefore required that the test stimuli can stimulate e...

Ngày tải lên: 21/06/2014, 22:20

... 2.1 implies that 1.1 has a solution u  ut if and only if u is a fixed point of T. From Lemmas 2.1 and 2.2 and the Ascoli-Arzela theorem, the following follow. Lemma 2.5. The operator defined ... Mathematics, Shanghai Jiao Tong University, Shanghai 200240, China 2 Department of Mathematics and Physics, Anyang Institute of Technology, Anyang, Henan 455000, China 3 Departm...

Ngày tải lên: 21/06/2014, 05:20

... years, the problem has attracted a great deal of people. Lions 6 used the theory of maximal monotone operators to solve the existence of solution of the following problem: Δu  0, in Ω ×  0,T  , ... considered blowup of the solution of problem 1.8–1.10. For more results concerning the related problem 1.8– 1.10, we refer the reader to 3 , 6,...

Ngày tải lên: 21/06/2014, 11:20

... With the proposed hybrid JEEMAS strategy, the destination needs to feedback the index of the path with the maximum mutual information to the source and each stage. Recall from the derivation of the achievable ... 3). Proof. To prove the theorem we will compute the achievable DM-tradeoff of the CF strategy (30) and show that it matches with the upper boun...

Ngày tải lên: 21/06/2014, 20:20

... element  P of F q k and, under this representation, to find factors Y −P(X)ofR is equivalent to find factors Y −  P of  R(Y) =  j≤l  R j Y j , that is, to compute factorization of a univariate polynomial ... can change up to w of its coordinates. (In fact, we suppose that the action of the warden on the stego-medium translates onto the stego-data in such a way th...

Ngày tải lên: 22/06/2014, 00:20

... noted that it follows from 6 that the complex Monge-Amp ` ere operator is well defined on E p . For further information about pluripotential theory and the complex Monge-Amp ` ere operator we ... special functions and their generalizations have had great impact on, for example, analysis, mathematical physics, and statistics. In this paper we prove the following inequality for th...

Ngày tải lên: 22/06/2014, 02:20

... is the only feasible way to take all the above mentioned aspects into account. To summarize, the goals of the paper are (i) to understand how equalization techniques affect the performance at ... from the wireless links point of view (i.e., at data-link and physical levels). The specific configuration of the simulation platform adopted for the present inve...

Ngày tải lên: 22/06/2014, 06:20