Finite response filter reconfigurable with a canonical sign digit representation coefficients

摘要

[Summary] (57) provide a reconfigurable FIR filter using (CSD) coefficient expression [challenge] canonical sign digit The invention relates to a data tap at (CSD) coefficient canonical sign digit finite impulse response filter for processing the values ​​for (FIR). Finite impulse response filter according to the present invention (FIR) is provided with a shift group associated with CSD coefficient and at least one data tap value of one at least. Each shift group including a plurality of parallel paths. Each parallel path produces a product that is weighted by shifting according to the bit pair of the coefficient and data tap values. It also provided an adder for combining the product of the weighted shift from each group.