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The multiple constant multiplication (MCM) implementation of polyphase decomposed finite impulse response (FIR) filters can be formulated as (1) one MCM block with all coefficients, (2) one MCM block for each subfilter, or (3) as a matrix MCM block. The coefficient symmetry of linear phase FIR filters, however, is not exploited in the later two formulations. In this paper, we investigate the MCM implementation...
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