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    Wyświetlanie 1-3 z 3
    Tytuł:
    Scaling of numbers in residue arithmetic with the flexible selection of scaling factor
    Autorzy:
    Ulman, Z.
    Czyżak, M.
    Smyk, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/376813.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    scaling technique
    scaling factor
    residue arithmetic
    Residue Number System
    RNS
    Mixed-Radix System
    MRS
    Opis:
    A scaling technique of numbers in residue arithmetic with the flexible selection of the scaling factor is presented. The required scaling factor can be selected from the set of moduli products of the Residue Number System (RNS) base. By permutation of moduli of the number system base it is possible to create many auxiliary Mixed-Radix Systems (MRS). They serve as the intermediate systems in the scaling process. All MRS's are associated with the given RNS with respect to the base, but they have different sets of weights. For the scaling factor value resulting from the requirements of the given signal processing algorithm, the suitable MRS can be chosen that allows to obtain the scaling result in most simple manner.
    Źródło:
    Poznan University of Technology Academic Journals. Electrical Engineering; 2013, 76; 175-179
    1897-0737
    Pojawia się w:
    Poznan University of Technology Academic Journals. Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Scaling of signed residue numbers with mixed-radix conversion in FPGA with extended scaling factor selection
    Autorzy:
    Smyk, R.
    Czyżak, M.
    Ulman, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/97226.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    residue number system
    RNS
    scaling
    scaling algorithms
    mixed-radix system
    MRS
    FPGA
    Opis:
    A scaling technique of signed residue numbers in FPGA is proposed. The technique is based on conversion of residue numbers to the Mixed-Radix System (MRS). The scaling factor is assumed to be a moduli product from the Residue Number System (RNS) base. Scaling is performed by scaling of MRS terms, the subsequent generation of residue representations of scaled terms, binary addition of these representations and generation of residues for all moduli. The sign of the residue number is detected by using the most significant digit of the MRS representation. Basic blocks of the scaler are realized in the form of modified two-operand modulo adders with included additional multiply and modulo reduction operations. An exemplary pipelined realization of the scaler in the Xilinx FPGA environment is shown. The design is based on Look-Up Tables (LUT)(2,sup>6 x 1) that simulate small RAMs which serve as main components for the look-up realization. Also a method is shown that allows for flexible selection of scaling factors from a set of moduli products of the RNS base. This is made by forming auxiliary MRSs by permutation of moduli of the base. All formed MRSs are associated with the given RNS with respect to the base but each MRS has different set of weights. Thus for the required scaling factor, the suitable MRS can be chosen that provides for the scaling error smaller than 1.
    Źródło:
    Computer Applications in Electrical Engineering; 2013, 11; 465-477
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pipelined scaling of signed residue numbers with the mixed-radix conversion in the programmable gate array
    Autorzy:
    Czyżak, M.
    Smyk, R.
    Ulman, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/377373.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    scaling technique
    Mixed-Radix System
    MRS
    Residue Number System
    pipelining
    Opis:
    In this work a scaling technique of signed residue numbers is proposed. The method is based on conversion to the Mixed-Radix System(MRS) adapted for the FPGA implementation. The scaling factor is assumed to be a moduli product from the Residue Number System (RNS) base. Scaling is performed by scaling of terms of the mixed-radix expansion, generation of residue representations of scaled terms, binary addition of these representations and generation of residues for all moduli. The sign is detected on the basis of the value of the most significant coefficient of the MRS representation. For negative numbers their residues are adequately corrected. The basic blocks of the scaler are realized in the form of the modified two-operand modulo adders with included additional multiply and modulo reduction operations. The pipelined realization of the scaler in the Xilinx environment is shown and analyzed with respect to hardware amount and maximum pipelining frequency. The design is based on the LUTs(26x 1) that simulate small RAMs serving as the main component for the look-up realization.
    Źródło:
    Poznan University of Technology Academic Journals. Electrical Engineering; 2013, 76; 89-99
    1897-0737
    Pojawia się w:
    Poznan University of Technology Academic Journals. Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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