Báo cáo hóa học: " Research Article Secure Precise Clock Synchronization for Interconnected Body Area Networks" doc

... Communications and Networking Volume 2011, Article ID 797931, 14 pages doi:10.1155/2011/797931 Research Ar ticle Secure Precise Clock Synchronization for Interconnected Body Area Networks David Sanchez Sanchez, 1 Luis ... that the synchronization of nodes will remain precise between two successive resynchronizations. We propose a secure, accurate, precise, and energy...

Ngày tải lên: 21/06/2014, 05:20

... Wireless Communications and Networking Volume 2009, Article ID 328706, 8 pages doi:10.1155/2009/328706 Research Article An Adaptive Channel Model for VBLAST in Vehicular Networks Ghassan M. T. Abdalla, 1 Mosa ... channel models are ideal for urban areas under heavy traffic conditions where there are a large number of surroundings and no line of sight. However, in suburban areas, open...

Ngày tải lên: 21/06/2014, 23:20

... networks and derive a closed-form expression for the link probability of outage. We theoretically prove that polarimetric diversity can increase transmission rates for the secondary terminals while, ... the values of interest for XPD min 0 (with a 80% level of confidence) are 8.91 dB and 1.8 dB for horizontal and vertical polarizations, respectively. In Figure 12, the performance of th...

Ngày tải lên: 21/06/2014, 17:20

... increment of k, the BER curve for HP bits moves backward while the BER curve for LP bits moves forward along the SNR axis. That is, for a fixed BER value, the SNR for HP bits monotonically decreases ... the SNR for LP bits monotonically increases in response to k.As k increases, the SNR for HP and LP bits cross; thus, for any target bit error rate, the gap between SNR for HP bi...

Ngày tải lên: 21/06/2014, 18:20

... Corporation Fixed Point Theory and Applications Volume 2010, Article ID 291851, 10 pages doi:10.1155/2010/291851 Research Article On Two Iterative Methods for Mixed Monotone Variational Inequalities Xiwen ... and Noor’s result in 27 is therefore false. Remark 3.3. Noor has repeated his above mistake in a number of his recent articles. A partial search found that articles 20, 21, 26...

Ngày tải lên: 21/06/2014, 20:20

... physical structure of the hole for multiple experiments. However, to perform the experiments, the sensor should also be covered with soil. Therefore, the reuse of a hole for multiple experiments is ... Wireless Communications and Networking Volume 2010, Article ID 620307, 14 pages doi:10.1155/2010/620307 Research Article Development of a Testbed for Wireless Underg round Sensor Ne...

Ngày tải lên: 21/06/2014, 23:20

... al. analyzed the perfor- mance of CCA by in -body and on -body nodes [35]. Figure 7 shows that for a given −85 dBm CCA threshold, the on -body nodes cannot see the activity of in -body nodes when they ... limitations for an in -body sensor network. The main reason is that the path loss inside the human body due to tissue heating is much higher than in the free space. The in -body...

Ngày tải lên: 21/06/2014, 23:20

... 30% of the total battery capacity [19]. Hence, precisely modeling battery behavior is essential for optimizing system performance in sensor networks. Researchers have developed high-level mathematical models ... would re- duce its overall performance as indicated in previous research [9, 21]. Algorithms for constructing CDS in wireless sensor networks have been studied by several resear...

Ngày tải lên: 22/06/2014, 19:20

... Journal on Advances in Signal Processing Volume 2007, Article ID 56104, 7 pages doi:10.1155/2007/56104 Research Article A Time-Domain Fingerprint for BOC(m, n) Signals B. Muth, 1 P. Oonincx, 1 and ... applicable to cosine-phased BOC. How- ever, more research is needed for finding the exact shape of the run length histogr ams for variations on BOC signals and for answering the q...

Ngày tải lên: 22/06/2014, 20:20