In recent decades many articles have discussed the possibilities of chaos applied in communications. However, the vast majority consider in practical terms the ideal channel condition, which is clearly a restringing condition. Some papers show that when there is an additive noise, the synchronization error often disrupts communication. In this work, we present results of a comparison between sy...

We propose a color constancy method using blackbody illumination constraint. Inputting two chromaticities of an identical surface taken under two blackbody illuminants, we can estimate each illuminant’s color temperature. From the simulation experiments conducted under ideal condition, we found that the accuracy of the estimation are extremely well, though the accuracy degraded under real condi...

For networks containing resistors, independent sources, gyrators, ideal transformers, diodes and other saturating monotone piecewise linear resistors, a new condition is proposed to guarantee uniqueness of solutions. This is both necessary and sufficient and is easy to test. It requires that the characteristics should satisfy a condition with the null vectors of the matrix of the linear part of...

Using the finite Zak transform (FZT) periodic polyphase sequences satisfying the ideal cyclic autocorrelation property and sequence pairs satisfying the optimum cyclic cross correlation property are constructed. The Zak space correlation formula plays a major role in the design of signals having special correlation properties. Sequences defined by permutation matrices in Zak space always satisf...

Let X be a closed subspace of a Banach space W and let F be the operator ideal of finite-rank operators. If α is a tensor norm, A is a Banach operator ideal, and λ > 0, then we call the condition “‖S‖α ≤ λ‖S‖A(X,W ) for all S ∈ F(X,X)” an inner inequality and the condition “‖T‖α ≤ λ‖T‖A(Y,W ) for all Banach spaces Y and for all T ∈ F(Y,X)” an outer inequality. We describe cases when outer inequ...

In this paper, we investigate three problems concerning the toric ideal associated to a matroid. Firstly, we list all matroids M such that its corresponding toric ideal IM is a complete intersection. Secondly, we handle the problem of detecting minors of a matroidM from a minimal set of binomial generators of IM. In particular, given a minimal set of binomial generators of IM we provide a neces...

In this paper, a new voltage controlled first order all-pass filter is presented. The proposed circuit employs a single differential voltage dual-X second generation current conveyor (DV-DXCCII) and a grounded capacitor only. The proposed all-pass filter provides both inverting and non inverting voltage-mode outputs from the same configuration simultaneously without any matching condition. Non-...