Polyphase channeliser for FDM

Please find the attached word file and in that I have explained each detail please give advice on that thanks.

anyone can guide on this how to proceed on this polyphase filter requirement.

aim is to generate a 50 channel FDM separated by 192kHz centers containing symbols modulated at 128 kHz by square root nyquist filters with 50 percent excess bandwidth so task is to baseband channelizer all 50 channels and output data samples from ach channels at 256 ks/s which is two samples per symbol