An Introduction to the FDM-TDM Digital Transmultiplexer

This technical note describes the FDM-TDM transmultiplexer, a class of algorithms used to construct a bank of digital filters. Such a filter bank can be used to separate the spectrally disjoint portions of an input signal. The need for such a filter bank arises frequently in practical applications and the growing capability of digital signal processing (DSP) devices makes the digital "transmux" approach ever more attractive compared to alternate system designs.

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