Báo cáo hóa học: " Research Article Implementation of a Cooperative MAC Protocol: Performance and Challenges in a Real Environment" doc

... corresponding data packet, since such information is contained in the MAC header and is in many instances transmitted at a rate higher than what STA s can support. Fortunately, since each data packet ... Networking Volume 2009, Article ID 598140, 19 pages doi:10.1155/2009/598140 Research Article Implementation of a Cooperat ive MAC Protocol: Performance and Chal...

Ngày tải lên: 21/06/2014, 20:20

... wireless path between each antenna and the additional antenna can be calculated by making a connection between each antenna path and the additional antenna path with a cable. The phase difference between ... 2000. [8]J.LitvaandT.K.Lo,Digital Beamforming in Wireless Communications, Artech House, Norwood, Mass, USA, 1996. [9] S. Mano and T. Katagi, A method for measuring amplitude...

Ngày tải lên: 21/06/2014, 23:20

... submodules of the physical layer are implemented as procedures, which get as standard parameters: request type, command, command parameters and data. Shared data are representedasglobalvariables.Eachphysicallayermodule ... cycles) obtained by OCAPI-xl and through area cost estimates. Using this ap- proach, different mappings of HIPERLAN/2 tasks on hard- ware and software have been e...

Ngày tải lên: 22/06/2014, 22:20

... X. Qin and Y. Su, “Approximation of a zero point of accretive operator in Banach spaces,” Journal of Mathematical Analysis and Applications, vol. 329, no. 1, pp. 415–424, 2007. 19 X. Qin and ... pseudocontractive mapping. Fixed Point Theory and Applications 15 16 W. Takahashi and M. Toyoda, “Weak convergence theorems for nonexpansive mappings and monotone mappings,”...

Ngày tải lên: 21/06/2014, 05:20

... “Coding of time-varying signals in spike trains of integrate -and- fire neurons with random threshold,” Neural Computation, vol. 8, no. 1, pp. 44–66, 1996. [8] A. A. Lazar and E. A. Pnevmatikakis, ... signal entering the soma of the neuron is often unknown. Ordinarily good estimates of the bandwidth are not available due to nonlinear processing in the upstream transduction pat...

Ngày tải lên: 21/06/2014, 20:20

... to continuous and discrete calculus,” Results in Mathematics, vol. 18, no. 1-2, pp. 18–56, 1990. 5 V. Lakshmikantham, S. Sivasundaram, and B. Kaymakcalan, Dynamic Systems on Measure Chains, vol. 370 ... Mass, USA, 2001. 3 M. Bohner and A. Peterson, Advances in Dynamic Equations on Time Scales,Birkh ¨ auser, Boston, Mass, USA, 2003. 4 S. Hilger, “Analysis on measure chains a...

Ngày tải lên: 21/06/2014, 20:20

... theorem, and so on; for details see 1–4 and the references therein. In the last several years, boundary value problems in an in nite interval have been arisen in many applications and received ... t  v  s  ds. 2.6 Hindawi Publishing Corporation Advances in Difference Equations Volume 2009, Article ID 609143, 11 pages doi:10.1155/2009/609143 Research Article Existenc...

Ngày tải lên: 21/06/2014, 20:20

... αα C C C C C C N m−1 Y m−1 N m Y m N m+1 Y m+1 N m+2 Y m+2 X m+2 X m+1 X m X m−1 Figure 1: Linear Wyner model with inter-cell conferencing and intra-cell TDMA studied in Section 2. N m are Gaussian with independent real and imaginary parts that each have zero mean and variance ... the uplink of a cellular system abstracted according to the linear Wyner model as sketched in the...

Ngày tải lên: 21/06/2014, 22:20

... plane. In practice, almost all communication systems transmit the information symbols in a regular way, and the underlying tiling forms a lattice in the TF plane. In a nutshell, a lattice V in ... suppression, and there is also an SINR gap between HMM and CP-OFDM about 4 ∼ 8dB at SNR = 30 dB and CFO in the range of −0.5 ∼ 0.5. Effects of both CFO and TO on the...

Ngày tải lên: 21/06/2014, 22:20

... 2007, Article ID 19375, 14 pages doi:10.1155/2007/19375 Research Article Effects of Unstable Links on AODV Performance in Real Testbeds Eleonora Borgia and Franca Delmastro Pervasive Computing and ... rapidly than OLSR since it introduces a 50% packet loss at a distance of 2 or 3 hops, and it dras- tically increases beyond 5 hops reaching a maximum value of 89% a...

Ngày tải lên: 22/06/2014, 19:20