SAMPLING CLOCK ERROR DETECTING APPARATUS AND METHOD, AND ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) RECEIVER INCLUDING THE SAME

摘要

A clock error detection apparatus and method for an OFDM receiver stably establishes a sampling clock recovery operation without being affected by a channel. The clock error detection apparatus extracts a pilot symbol from an output signal of the FFT unit, removes reception symbol's phase distortion caused by a multi-path channel, calculates an estimated sampling clock error rate on the basis of a phase rotation variation between pilot symbols, and outputs the calculated result.