APPARATUS AND METHOD FOR CHANNEL ESTIMATION IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM

摘要

An apparatus and method for estimating a channel in an Orthogonal Frequency Division Multiplexing (OFDM) system is provided. The apparatus and method includes estimating a channel corresponding to a pilot of a received signal, performing a first estimation on a data channel by performing time-domain linear interpolation on pilots of previous and next symbols of the pilot using the channel estimate, performing Infinite Impulse Response (IIR) filtering on the channel estimate and the data channel estimate of the pilots of the previous and next symbols of the pilot, and performing a second estimation on the data channel by performing frequency-domain linear interpolation on a remaining zone which excludes the pilot and the zone that underwent the first estimation.