Báo cáo hóa học: " Rapid Prototyping for Heterogeneous Multicomponent Systems: An MPEG-4 Stream over a UMTS " ppt

... Virtex-E and Virtex-II FPGAs, and PCs. The calculations and data transfers are executed in paral- lel. RAM and SAM communication models have been tested for PCI transfers. Higher transfer rates are ... application behavior. These applica- tions are a mixture of transformation and reactive operators [3]. A transformation operator is based on the data-driven process: input data is transfo...

Ngày tải lên: 22/06/2014, 23:20

... three subchannels, Packet Random Access CHannel (PRACH), Packet Access Grant CHannel (PAGCH), and Packet Paging Channel (PPCH) [43]. GPRS stations use the PRACH to initiate a packet transfer by ... Control and Evaluations The essential mechanisms to coordinate distributed channel access control follow two channel access schemes; (1) random channel access scheme,suchasCSMA,CSMA/CA, and pure...

Ngày tải lên: 21/06/2014, 23:20

... variance of the ith subband, and σ 2 x is the variance of the input signal. A zero mean unit variance AR(1) process with correlation coefficient ρ = 0.95 is an accurate approximation of natural images ... Lagrangian local search was introduced in [22] and later applied to filter bank design in [23] and peak con- strained least squares (PCLS) FIR design in [24, 25]. The discrete Lagrangian lo...

Ngày tải lên: 23/06/2014, 00:20

... and 2: C. perfringens, lane 3 and 4: C. tetani, lane 5 and 6: P. aeruginosa, and lane 7 and 8: S. aureus in duplicates. Plasmid of P. aeruginosa (lane 9), and S. aureus (lane 10) were used to identify ... quantitatively analyzed using an image analysis software. The sensitivity, specificity and reproducibility of this method were also evaluated. Materials and Methods Materials and reagents...

Ngày tải lên: 20/06/2014, 03:20

... mean transfer delay over the last-hop WLAN and T c is that between the WLAN router and the cellular base station. For 802.11 WLAN, the wireless channel is shared in a contention-based access manner. ... collision probability is quite small and each packet sees an approximately constant service rate. Assuming a constant channel service rate C L (bps) for the last-hop WLAN and a M...

Ngày tải lên: 21/06/2014, 17:20

... USA, 1987. [24] M. A. Fischler and R. C. Bolles, “Random Sample Consen- sus: A Paradigm for Model Fitting with Applications to Image Analysis and Automated Cartography,” Communications of the ACM, ... Mich, USA, 1996. [5] P. Bahl and V. N. Padmanabhan, “RADAR: an in-building RF- based user location and tracking system,” in Proceedings of 19th Annual Joint Conference of the IEEE Compute...

Ngày tải lên: 22/06/2014, 23:20

... Yokoyama Nanotechnology Research center, Fujitsu Lab. Ltd., Morinosato-Wakamiya 10-1, Atsugi, Kanagawa 243-0197, Japan e-mail: song.hai-zhi@jp.fujitsu.com Y. Sakuma Æ M. Kawabe Nanomaterials Laboratory, National Institute ... dots are about 1.5 (big) and 1.2 nm (small) and the depth of holes are 1.4 (big) and 1.1 nm (small), Fig. 2 Top-view AFM images and line profiles of a square- latticed...

Ngày tải lên: 22/06/2014, 22:20

... NANO EXPRESS Open Access Rapid large-scale preparation of ZnO nanowires for photocatalytic application Chunyu Ma 1 , Zhihua Zhou 1,2† , Hao Wei 1 , Zhi Yang 1 , Zhiming Wang 2 and Yafei Zhang 1*† Abstract ZnO ... article as: Ma et al.: Rapid large-scale preparation of ZnO nanowires for photocatalytic applicat ion. Nanoscale Research Letters 2011 6:536. Submit your manuscript to a j...

Ngày tải lên: 20/06/2014, 22:20

... invoked for gate-level synthesis. Place androutetoolssuchasXilinxISEareusedtogen- erate gate-level bit -stream file. For hardware verifica- tion and validation, a configurable Nallatech hardware platform ... 0 NCO Vehicular Pedestrian Wireless channel Figure 1: A realistic MIMO-CDMA tr ansmitter block diagram with digital baseband and analog RF modules. RF/IF downconverter ADC Covarianc...

Ngày tải lên: 22/06/2014, 22:20

... H ¨ am ¨ al ¨ ainen, J. Saloranta, J P. M ¨ akel ¨ a, I. Oppermann, and T. Patana, “Ultra-wideband signal impact on the perfor- mances of IEEE 802.11b and bluetooth networks,” Interna- tional ... Heterogeneous Ultra-Wideband Systems Yongjing Zhang, 1 Haitao Wu, 2 Qian Zhang, 3 and Ping Zhang 1 1 Beijing University of Posts and Telecommunications, China 2 Microsoft Research Asia, Beijing, C...

Ngày tải lên: 22/06/2014, 22:20