Báo cáo hóa học: "Research Article Cooperative Localization Bounds for Indoor Ultra-Wideband Wireless Sensor Networks" pdf

... Signal Processing Volume 2008, Article ID 852509, 13 pages doi:10.1155/2008/852509 Research Article Cooperative Localization Bounds for Indoor Ultra-Wideband Wireless Sensor Networks Nayef Alsindi ... indoor multipath environments. 3. INDOOR COOPERATIVE LOCALIZATION BOUNDS 3.1. Problem formulation Based on the ranging models of Section 2,wederivethe G-CRLB for...

Ngày tải lên: 22/06/2014, 06:20

... global identity (ID), wireless sensor networks lack global ID. Furthermore, the complexity of QoS models proposed for wireless sensor net- works may become a limiting factor for the implementation of ... Journal on Wireless Communications and Networking Volume 2010, Article ID 468737, 14 pages doi:10.1155/2010/468737 Research Article Modelling and Implementation of QoS in W...

Ngày tải lên: 21/06/2014, 17:20

... id of a sensor, we obtain the keying information (called a polynomial share) allocated to that sensor. For example, sensor i receives f (i, y) as its keying information. Therefore two sensors ... keying information storage in a worker node (for a λ-collusion- resistent key space, m is determined by τ, the number of keying information units a sensor can obtain in the form of m = (λ+1)...

Ngày tải lên: 21/06/2014, 20:20

... on Embedded Systems Volume 2009, Article ID 474903, 13 pages doi:10.1155/2009/474903 Research Article Reliable Event Detectors for Constrained Resources Wireless Sensor Node Hardware Marco Antonio ... of the distance for the speech period of the signal set SS2. (a) event detector performance for the parameters {tol =±0.0055, L = 160 milliseconds}.(b) event detector performance...

Ngày tải lên: 21/06/2014, 20:20

... Journal on Wireless Communications and Networking A B C D E F G H I Figure 1: The minimum connected dominating set (MCDS) {C, D, F, G} forms a backbone for the sensor network. A packet is forwarded ... connected dominating set (BACDS) for the network in Figure 1 at t = 10 minutes. The ζ i (t)foreach node i is listed above. algorithms for forming a virtual backbone in a sensor net-...

Ngày tải lên: 22/06/2014, 19:20

... Chen et al. 3 for sensor networks. It provides the following mechanisms: (a) for a sink node to flood a query toward the sensors of interest (say, sensors detecting event), (b) for intermediate nodes ... and Infor- mation in Huazhong University of Science and Technology, China, as a Ph.D. candi- date. His current research interests include wireless sensor network, wireless ad hoc...

Ngày tải lên: 22/06/2014, 23:20

... proportion of the localization techniques proposed for sensor networks assume a device- based approach. For example, the three/two neighbor algorithm proposed by Barbeau et al. [7]allowsfora sensor of ... Journal on Wireless Communications and Networking Volume 2010, Article ID 567040, 10 pages doi:10.1155/2010/567040 Research Article Centroid Localization of Uncooperative N...

Ngày tải lên: 21/06/2014, 23:20

... heterogeneity such that for Δ (I) > 15 dB, SIC is clearly superior to OMA. The beneficial effects of the newly proposed strategy can be observed for BORG ∗ K , which performs as well as OMA for small Δ (I) , ... Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010, Article ID 395763, 10 pages doi:10.1155/2010/395763 Research Article A Novel Method fo...

Ngày tải lên: 21/06/2014, 11:20

... compares the pdf of a gaussian variable with mean μ f and standard deviation σ f / √ n with the pdf of (1/n)  u f u for different values for n. The latter pdf has 8 EURASIP Journal on Wireless Communications ... closed-form formula is a very good approximation, even for the traditional hexagonal network. The simplicity of the result allows a spatial integration of the OCIF leadi...

Ngày tải lên: 21/06/2014, 11:20

... 2010, Article ID 619423, 10 pages doi:10.1155/2010/619423 Research Article Gr ¨ uss-Type Bounds for the Covariance of Transformed Random Variables Mart ´ ın Egozcue, 1, 2 Luis Fuentes Garc ´ ıa, 3 Wing-Keung ... next calculate D. For this, we use the above formulas for the three cumulative distribution functions and see that Cx, y xyx 2 −11 −y 2 /4. The negative sign of C...

Ngày tải lên: 21/06/2014, 18:20