VLSI implementation of on board processing subsystems for satellite channels

One of the sub-systems used in on board processing for satellite channels is a Multicarrier Demodulator (MCD). The MCD consists of a demultiplexer followed by a demodulator. The demultiplexer is used to separate the frequency division multiple access signals into individual channels. The demodulator is used to bring the separated frequency division multiple access signals into baseband signals. The architecture has four modules namely a polyphase filter module, an FFT module, an interpolator network and the demodulator all operating in parallel and pipeline fashion. The VLSI implementation of a multicarrier demodulator for on-board satellite communication is presented.