How to choose pilot symbols count in OFDM? I am from an Instrumentation background and recently have been working on an OFDM project. With my research, I was unable to find the solution to the below question.


How to choose the Pilot Carriers/pilot symbols? Suppose from one example which I am referring they have chosen pilot carriers as 8 counts for the  Subcarrier count of 64 and with Cyclic prefix is 16. and in the second example pilot carriers = 346 for the subcarrier count = 224 with CP = 16. I am really confused about how to choose the pilot count?
It is a tradeoff. The more pilot subcarriers, the better then channel estimation, but the fewer subcarriers usable for data. Simulations and testing of performance can help in making the choice.

You probably have some numbers wrong. If you have 224 subcarriers, you cannot have 346 of them as pilot carriers.