Báo cáo hóa học: " Research Article How Reed-Solomon Codes Can Improve Steganographic Schemes" potx

... m). 4. What Reed-Solomon Codes Are, and Why They May Be Interesting Reed-Solomon codes over the finite field F q are optimal linear codes. The nar row-sense RS codes have length n = q −1and can be defined ... BCH codes. But, we prefer the alternative, and larger, definition as an evaluation code, which leads to the generalized Reed-Solomon codes (GRS codes) . 4.1. Reed-Solomo...

Ngày tải lên: 22/06/2014, 00:20

... Journal on Wireless Communications and Networking Volume 2008, Article ID 286351, 11 pages doi:10.1155/2008/286351 Research Article How Equalization Techniques Affec t the TCP Performance of MC-CDMA ... schemes). However, in spite of the use of W-H codes, the orthogonality of the sequences of different users is lost due to the different fading in each subchannel [4]. There- fore, in or...

Ngày tải lên: 22/06/2014, 06:20

... Corporation EURASIP Journal on Advances in Signal Processing Volume 2008, Article ID 243153, 7 pages doi:10.1155/2008/243153 Research Article How to Solve the Problem of Bad Performance of Cooperative Protocols ... re- ceived signals can be written in the form Y = √ SNRHX +W with an equivalent channel matrix H being orthogonal. So, linear decoding can be performed as for the origi...

Ngày tải lên: 22/06/2014, 19:20

... can write | u n1  x  − u n  x  | ≤    ϕ   L  n−1  x − a  n−1  n − 1  ! d  Tu 1 ,u 1  . 3.4 Hindawi Publishing Corporation Fixed Point Theory and Applications Volume 2010, Article ... Point Theory and Applications Volume 2010, Article ID 927640, 6 pages doi:10.1155/2010/927640 Research Article Hyers-Ulam Stability of Nonlinear Integral Equation Mortaza Gachpazan an...

Ngày tải lên: 21/06/2014, 11:20

... Publishing Corporation Advances in Difference Equations Volume 2010, Article ID 457073, 15 pages doi:10.1155/2010/457073 Research Article A Discrete Equivalent of the Logistic Equation Eugenia N. ... forth. Nowadays, the logistic differential equation can be found in many biology textbooks and can be considered as a cornerstone of ecology. However, it has also received much criticism...

Ngày tải lên: 21/06/2014, 11:20

... w(t) > 0 is represented with dashed line). We cannot predict the exact final steady state of the cell, but we can see that the equilibrium points cannot be in the ( −1, 1) region, so the output ... Corporation EURASIP Journal on Advances in Signal Processing Volume 2009, Article ID 646975, 7 pages doi:10.1155/2009/646975 Research Article Cellular Neural Networks for NP-Hard Optimiza...

Ngày tải lên: 21/06/2014, 22:20

... Corporation Journal of Inequalities and Applications Volume 2007, Article ID 36845, 9 pages doi:10.1155/2007/36845 Research Article System of Generalized Implicit Vector Quasivariational Inequalities Jian-Wen ... and suggestions that improved the presentation of this manuscript. This research was sup- ported by the National Natural Science Foundation of China (Grant no. 70502006), the...

Ngày tải lên: 21/06/2014, 22:20

... residue rings. Their codes are however unstructured. Structured LDPC codes, which include the family of finite geometry (FG) codes [5] and balanced incomplete block design (BIBD) codes [6], are favored ... setting a = 1yield binary codes that are the same as those in [14, Section IV- A]. Further, it has also been shown that these codes are the binary projective geometry (PG) LDPC...

Ngày tải lên: 21/06/2014, 23:20

... 2 it can be seen that the received power without tak- ing the oxygen attenuation into account shows a linear de- crease for increasing frequency. However, taking into account the significant oxygen ... frequency. The modeling of the measured rain events shows that the model can predict the received scattered power for any con- figuration of interfering link. It is shown that the path ori- e...

Ngày tải lên: 22/06/2014, 19:20