I will explain the system:
i am trying to transfer data from tx node to rx at UHF band on 400 MHz. I am trying first only wired transfer then i will try wireless.i am assuming only gaussian noise. My bandwidth is 1 Mhz. I am using gardner timing recovery with 2 samples/symbol. I am using 2nd order loop filter. please let me know any other information is required?.
What kind of interpolation filter should be used in timing recovery block of the receiver? I have seen some papers where linear, cubic, quadratic farrow filter is used.
Is there any particular criteria for this? Do i need a farrow filter or any other filter? Does this has any affect of the convergence of the timing recovery? If my input and output samples/symbol are same can i use any simpler filter?