Polyphase channelizer performs sample rate change required for both matched filtering and channel frequency spacing

  • Authors:

  • Fred Harris;Chris Dick

  • Affiliations:

  • San Diego State University;Xilinx Corp.

  • Venue:
  • Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
  • Year:
  • 2009

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Abstract

We present here the design and implementation of a polyphase filter bank channelizer with an embedded square-root shaping filter in its polyphase engine that performs two different resampling tasks required for the spectral shaping and for the Mchannel channelization. In particular, in the example we cite, the shaping filter performs 1-to-48 resampling from input symbol rate to output sample rate while the IFFT performs 1-to-40 resampling to form a 40 channel channelizer.