CFO ESTIMATION METHOD USING REFERENCE SIGNAL IN WIRELESS LAN SYSTEM

摘要

Disclosed is a CFO estimation method comprising: generating a first function which is defined by an RS received from two consecutive OFDM symbols with respect to a certain subcarrier; repeatedly performing a process of generating the first function with respect to all sets of subcarriers to which reference signals are transmitted; and determining, as a first residual CFO, the phase of a second function, which is the sum of repeatedly performed results, by using information regarding a pre-known reference signal.