I am working in burst QPSK demodulator. I just want to double check if what I am doing is right.
- Large frequency feedforward recovery by FFT
- Carrier recovery Costas with 4 samples/symbol
- Timing recovery with interpolation and matched filter using feedback control
So 4 samples/symbol goes to interpolation filter and after matched filter 2 samples/symbol is used for Gardner timing 4 symbol recovery.
Will the steps I have followed work?