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This paper presents a novel DA based 2D DCT/DST coprocessor architecture for the synchronous design in a Xilinx FPGA device. A 1.2V, 90nm triple-oxide technology, Virtex-IV FPGA is used for final implementation and maximum operating frequency of 117 MHz is achieved. Using XPower toolbox, the total dynamic power consumption of 393 mW is measured. The paper presents the trade-offs involved in designing...
We introduce the notions of T-Rickart and strongly T-Rickart modules. We provide several characterizations and investigate properties of each of these concepts. It is shown that R is right Σ-t-extending if and only if every R-module is T-Rickart. Also, every free R-module is T-Rickart if and only if $R = Z₂(R_{R})⊕ R'$, where R' is a hereditary right R-module. Examples illustrating the results are...
We describe all those indecomposable primarily comultiplication modules with finite-dimensional top over pullback of two Dedekind domains. We extend the definition and results given by R. Ebrahimi Atani and S. Ebrahimi Atani [Algebra Discrete Math. 2009] to a more general primarily comultiplication modules case.
This paper presents a compact implementation of the S-Box of Pomaranch stream cipher using composite field arithmetic in GF((23)3). It describes a systematic exploration of different choices for the irreducible polynomials that generate the extension fields. It also examines all possible transformation matrices that map one field representation to another. We evaluated the optimal candidates using...
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