The primary purpose of prefix correlation approaches is to align the signal properly. Occasionally, it corrects the phases correctly allowing us to precisely retrieve the signal.
In wireless communication, prefix signals are typically sent first, followed by data payload and perhaps postfix at the conclusion of the packet. To determine auto-correlation, we generate the same prefix at the receiving end. We correctly align the prefix signals following prefix correlation.
Occasionally, you might want to increase the prefix's amplitude in order to improve correlation. Chirp signals can also be used as a prefix for security and resolution. Prefix correlation is actually used in a lot of research papers to get channel impulse responses.
