Báo cáo hóa học: "Research Article Two-Step Time of Arrival Estimation for Pulse-Based Ultra-Wideband Systems" potx

... analysis of the results to provide insights for adapting IEEE 802.15.4 for CPS. By analyzing the results, we can configure and optimize the parameters of IEEE 802.15.4 for CPS. 3. QoS Requirements of ... simulation time. L MSDU is the MSDU length of the data frame. T end − T start is the total time of the transmission from the beginning to the end. (iii) Packet Loss Rate: it...

Ngày tải lên: 21/06/2014, 05:20

... nonnegative on time scales. Therefore, it is a natural problem to consider the existence of positive solution for higher order p-Laplacian equations with sign changing nonlinearity on time scales. ... on time scales,” Journal of Differential Equations, vol. 240, no. 2, pp. 217– 248, 2007. 8 Y H. Su, W T. Li, and H R. Sun, “Triple positive pseudo-symmetric solutions of three-poi...

Ngày tải lên: 21/06/2014, 20:20

... sequence (10), the closed-form estimation variance (31) may provide a guideline for signal power allocation at transmitter, for example, for a given threshold of the estimation variance φ (channel ... thereby providing validity for adaptive resource allocation. We also present a performance analysis of the channel estimation approach to derive a closed-form expression for...

Ngày tải lên: 21/06/2014, 23:20

... detection probability Theoretical Simulation Figure 3: Performance of the proposed scheme according to PU SNR. Table 1: Parameter values for performance evaluation. Parameter Value Number of pilot subcarriers, M 240 OFDM symbol duration ... exploit all OFDM symbols of pilot subcarriers for PU detection. Therefore, the CR users can achieve better detection performance with the propos...

Ngày tải lên: 21/06/2014, 05:20

... remarkably well for every member of the family, except when α is close to zero. In fact, for more than 50% of the members of this family, the use of the kernel function optimized for the whole ... (“parameter space for the family of random processes”) is a fixed subset of R L ,forsome fixed integer L.Forafixedq ∈ Q, we think of {x q (t), t ∈ Z} as a random process in discre...

Ngày tải lên: 21/06/2014, 07:20

... 2010, Article ID 695237, 9 pages doi:10.1155/2010/695237 Research Article Enumerative Encoding of TMTR Codes for Optical Recording Channel Hui-Feng Tsai Department of Computer Science and Information ... coding gain of this encoder, a time- varying Viterbi detector is required. The trellis diagrams of the Viterbi detector for even and odd times are shown in Figure 7(c). The...

Ngày tải lên: 21/06/2014, 08:20

... equilibrium point x  0 of 1.4 is global attractor for any initial conditions x −m ,x −m1 , ,x 1 ,x 0  ∈ 0,μ m1 . Proof. The proof of this Theorem is similar to that of Theorem 3.3. We omit ... in Difference Equations Volume 2010, Article ID 505906, 10 pages doi:10.1155/2010/505906 Research Article Asymptotic Behavior of Equilibrium Point for a Family of Rational Diff...

Ngày tải lên: 21/06/2014, 11:20

... “Geometrical aspects of stability theory for Hill’s equations,” Archive for Rational Mechanics and Analysis, vol. 131, no. 3, pp. 225–240, 1995. 17 M. Zhang, “Nonuniform nonresonance of semilinear ... 0. 2.23 Proof. Compared with results in 8, we need only prove Σ  2m1  a, b  ∈  λ L 2m1  a, b  , λ R 2m1  a, b   ∀m ∈ Z  . 2.24 The proof of this is similar to the...

Ngày tải lên: 21/06/2014, 11:20

... L −1 ζ n u  ou for u near 0 in E. The results of Rabinowitz 8 for 3.8 can be stated as follows. For each integer k ≥ 1,ν∈{, −}, there exists a continuum {C νn k } of solutions of 3.8 joining ... max 0≤|s|≤r {|fs|}. Proof. The proof is similar to that of Lemma 3.5in6; we omit it. Lemma 2.6. Let (A1)-(A2) hold, and {μ l ,y l }⊂Φ ν k is a sequence of s...

Ngày tải lên: 21/06/2014, 11:20

... a nontrivial σ-algebra of subsets of Ω.LetP be a δ-ring of subsets of Σ, such that E ∩ A ∈Pfor any E ∈Pand A ∈ Σ. Let us assume that there exists an increasing sequence of sets K n ∈Psuch that ... ε,   g  ω    ≤   f  ω    , for every ω ∈ Ω  . 1.2 For the sake of simplicity we write ρf instead of ρf, Ω. Definition 1.2. AsetE is said to be ρ-null if ρα, E0...

Ngày tải lên: 21/06/2014, 20:20