Hi all,

I am designing a loop filter of DPLL in 802.11ac OFDM system. The DPLL tracking is achieved by pilot symbols inserted into OFDM symbols.

Importantly, the coefficients of loop filter significantly impact the PER ( packet error rate ) of the OFDM system.

So, does anyone know that how to design or determine the coefficients of the loop filter is able to maximize the performance of the OFDM system.

Many thanks

Jiajun Zhu