Hi All, Recently, I've gone down the road of timing synchronization and ended up learning basics for PLLs and such. So far in GNURadio, it seems that the loop filters used in the existing GNURadio synch blocks are only first order. From what I understand, increasing the filter order of the PLL can help it to lock in the presence of noise, for both timing and frequency. Any else care to comment on the performance gains for higher orders?
I propose to come up with a block that can cascade a series of integrators and gains to form a loop filter. The total order and gains of the filter can perhaps be defined in the block constructor. The idea is make the block generic enough so that you can drop it in with an outside NCO and phase error detector. Thoughts, questions or concerns? Colby _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio