Efficient polyphase filters demultiplex FDM signals

In Digital Signal Processing applications there exists the process of converting Frequency Division Multiplexed (FDM) to Time Division Multiplexed (TDM) signals. The device used to implement this function is called a Transmultiplexer. This thesis project describes the software model of such a device by use of polyphase filters. Various MATLAB scripts (m-files) have been written to create a test signal used as inputs to the simulation of a conventional Transmultiplexer, a filterbank Transmultiplexer and finally a polyphase Transmultiplexer. The conventional and filterbank Transmultiplexers are described to explain and derive the concept of the Polyphase method.