Báo cáo hóa học: " RD Optimized, Adaptive, Error-Resilient Transmission of MJPEG2000-Coded Video over Multiple Time-Varying Channels" potx

... 10.1155/ASP/2006/79769 RD Optimized, Adaptive, Error-Resilient Transmission of MJPEG2000-Coded Video over Multiple Time-Varying Channels Scott Bezan and Shahram Shirani Department of Electrical and ... for transmission of tiles over 1, 2, and 3 time- varying channels, respectively. In all cases, the PSNR of the AP scheme outperforms that of the BP scheme. In...

Ngày tải lên: 22/06/2014, 23:20

... distribution of the histogram is dominated by the local structure of the region, such that noise and cod- ing artifacts will not affect the overall distribution of the his- togram. According to the ... the probability density functions (PDFs) of some descriptors in- side a region. The PDFs are approximated by the histogram of a descriptor. Considering the context of video process...

Ngày tải lên: 22/06/2014, 19:20

... complexity). Keywords: Channel length, Cyclic prefix (CP), Orthogonal frequency-division multiplexing (OFDM), Symbol synchronization I Introduction Orthogonal frequency-division multiplexing (OFDM) is a ... CP of length N G is inserted at the beginning of each OFDM symbol to pre vent ISI and preserve the mutual orthogonality of sub-carriers. Following parallel-to-serial conversion, the...

Ngày tải lên: 21/06/2014, 00:20

Ngày tải lên: 21/06/2014, 02:20

... approximation of fT, y 1 . This computation is continued to obtain {y n } an approximate sequence of {x n }. One of the most popular iteration procedures for approximating a fixed point of T is Picard’s ... Iran 2 Department of Mathematics, Amirkabir University of Technology, Tehran 15916 34311, Iran 3 Department of Mathematics, Newcastle University, Newcastle, NSW 2308, Austra...

Ngày tải lên: 21/06/2014, 20:20

... of partitioned H.264 video over WLANs. 4.2. Transmission of partitioned H.264 video The data partitioning feature is available in the extended profile of the H.264 standard. Using this feature, ... layer is limited to a type of service field in each video packet that informs the delivery layer of its priority class. (2) Transmission of the entire video trafficinonestream...

Ngày tải lên: 21/06/2014, 23:20

... In addition, when the number of the OFDM symbols per frame is Γ, the percentage of overhead out of every OFDM frame becomes V 0 /Γ×100%. On the other hand, for Method B, the amount of overhead is |D|N dg V 1 ,where|D| ... V 1 are the numbers of dedicated subcarriers and transmitted OFDM symbols, respectively. The percentage of the overhead out of every OFDM frame becomes |D|/K ×...

Ngày tải lên: 21/06/2014, 23:20

... condition for Schur convexity. B. Proof of Theorem 4 Proof. The proof is similar to the proof in Appendix A.The difference is that we have two sums in the integral instead of the product. Starting from ... Communications and Networking 11 Appendices A. Proof of Theorem 1 Proof. In the proof, we verify Schur’s condition directly. Therefore, we need the first derivative of R MT sum with r...

Ngày tải lên: 21/06/2014, 23:20

... vertex of the tree T. We denote the first predecessor of t by 1 t , the second predecessor of t by 2 t , and denote by n t the nth predecessor of t.LetX A  {X t ,t∈ A},andletx A be a realization of ... transition probability of a T-indexed second-order nonhomogeneous Markov chain. Liu 10 has studied a strong limit theorem for the harmonic mean of the random transition probabil...

Ngày tải lên: 22/06/2014, 02:20

... The molar ratio of Zn:tu = 1:0.25 seems to be optimal in order to grow highest aspect ratio nanorods. Structural Properties and Phase Composition of ZnO Layers Figure 3 shows the XRD pattern of the sprayed ... morphology of grown ZnO crystals has been controlled by the reaction conditions and the presence of various additives. In order to obtain the desired crystals size, shape and...

Ngày tải lên: 22/06/2014, 18:20