Báo cáo hóa học: "Research Article Dual Wake-up Low Power Listening for Duty Cycled Wireless Sensor Networks" docx

... Journal on Wireless Communications and Networking Volume 2008, Article ID 738292, 11 pages doi:10.1155/2008/738292 Research Article Dual Wake-up Low Power Listening for Duty Cycled Wireless Sensor ... “WiseMAC: an ultra low power MAC protocol for multi-hop wireless sensor networks,” in Proceedings of the 1st International Workshop on Algorithmic Aspects of...

Ngày tải lên: 21/06/2014, 23:20

... Part 15.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Low- Rate Wireless Personal Area Networks, IEEE, 2006. [4] V. Westmark, “A definition for information system ... routing in wireless sensor networks,” Cluster Computing, vol. 8, no. 2-3, pp. 179–188, 2005. [6] C.P .Low, C.Fang,J.M.Ng,andY.H.Ang,“Efficient load- balanced clustering algorithms...

Ngày tải lên: 21/06/2014, 11:20

... security protocols for sensor networks,” Wireless Networks, vol. 8, no. 5, pp. 521–534, 2002. [11] H. Chan, A. Perrig, and D. Song, “Random key predistribution schemes for sensor networks,” in ... encryption overhead for sensor network nodes,” in Proceedings of the 2nd ACM International Workshop on Wireless Sensor Networks and Applications (WSNA ’03), pp. 151–159, September...

Ngày tải lên: 21/06/2014, 17:20

... s i as follows: F ij = αF power, j + βF info,j + γF comm,j ,forj ∈ S i , (23) where F power, j , F info,j ,andF comm,j are the power attraction component force, information attraction component force and ... Bayesian estimation for target tracking. (i) Power attraction component force F power, j . F power, j is used to indicate the node battery energy level, which is defined as follo...

Ngày tải lên: 21/06/2014, 20:20

... send the busy tone pulses. PCDC (Power Controlled Dual Channel) [14] also uses dual channels for data and control packets. A single channel solution for transmission power control (POWMAC) is used in ... data packet by using the lowest transmission power level even if there is no power level satisfied the iTolerance constraints. Notice that here, for simplicity and fair perfor...

Ngày tải lên: 21/06/2014, 23:20

... Q + mn,k and Q − mn,k for m/∈ L s , we need the following information to be shared among the schedulers: the signal power, S m,k (i), the total interference plus noise power, Z m,k (i), and the ... and the transmit powers are gradually adapted accordingly. The difference between our scheme and the busy burst concept of [15] is that we have more informative beacons that allow for more pre...

Ngày tải lên: 21/06/2014, 05:20

... as S  x   ⎧ ⎪ ⎪ ⎪ ⎨ ⎪ ⎪ ⎪ ⎩ { 4, 5 } for x ∈ { 1, 2 } { 4 } for x ∈ { 3, 4 } { 3, 4 } for x  5 ,T  x   ⎧ ⎪ ⎪ ⎪ ⎨ ⎪ ⎪ ⎪ ⎩ { 3, 4 } for x ∈ { 1, 2 } { 4 } for x ∈ { 3, 4 } { 3 } for x  5 . 2.36 and take ... contradiction with ε>0. Therefore, conclusion 2.17 is true. From the construction of the sequence {x n },it follows that the same conclusion holds for {x n }.Thu...

Ngày tải lên: 21/06/2014, 11:20

... Journal on Wireless Communications and Networking Volume 2010, Article ID 164651, 12 pages doi:10.1155/2010/164651 Research Article Frame-Aggregated Link Adaptation Protocol for Next Generation Wireless ... standard has been used both for indoor and mobile communications. The applications for WLANs include wireless home gateways, hotspots for commercial usages, and ad hoc ne...

Ngày tải lên: 21/06/2014, 17:20

... capacity for today’s high-speed multimedia wireless services. This turns out to be the most significant obstacle in developing antijamming features for high-speed wireless communica- tion systems, for ... in Signal Processing Volume 2009, Article ID 361063, 11 pages doi:10.1155/2009/361063 Research Article Secure Collision-Free Frequency Hopping for OFDMA-Based Wireless Netwo...

Ngày tải lên: 21/06/2014, 20:20

... ω x for t ≥ 0. It follows that φ(y(t)) = φ(∞) for t ≥ 0 and hence, by Property 4, for a.a. t ≥ 0wehave 0 = dφ(y(t))/dt = Dφ(y(t)). This means that y(t) ∈ Z for a.a. t ≥ 0. Hence, y(t) ∈ cl(Z)forallt ... H k (x)}.Givenany δ>0, for sufficiently large k,sayk>k δ ,wehave graph(H k ) ⊆ graph(H ∞ )+B(0, δ). (A.9) By applying [12, page 105, Proposition 1] it follows that for any  ...

Ngày tải lên: 21/06/2014, 22:20