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Demodulation in digital receiver.

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makis0987

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i want to implement a simple RDS system in matlab.
I have a baseband digital signal[0,fm] which is voice and want also to send a message which i convert to ASCII and then send their superposition to the reciever.
My problem is in the receiver what filters should i use, and how can I remove sinusoidal noise from the signal knowing only sampling frequency and the duration of bit.
Thanks in advance
 

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