Supposing I have a discrete time signal x(n). when I pass this through an FIR filter h(n), and again pass this result through h(n) again (essentially this is a second order filtering), the group delay increases by a factor of 2. what are the practical implications of this?
The same concept is used while implementing a matched filter receiver . where the same filter which is used in the transmitter side is also used in the receiver side.
Thanks in advance