<< polyphase_decimation Channelization polyphase_form >>

comm_tbx >> Channelization > polyphase_filter

polyphase_filter

Creation of a polyphase decimation filter structure

Parameters

h:

FIR filter coefficients (1d vector)

m:

number of polyphase branches e.g. decimation ratio

H:

resulting polyphase matrix form

Description

Creation of the polyphase matrix. The filter is decomposed into m phases sub-filters (m rows of the H matrix). Each sub-filter can process a decimated version of the input signal, with a different phase.

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<< polyphase_decimation Channelization polyphase_form >>