Channel equalizer for use in ofdm receiving system

The present invention relates to a channel equalization unit of the OFDM receiving system, receives a receive channel signal and a count value after performing the complex multiplication, the first means for outputting a complex signal multiplier (10) and; It means for generating a reference signal (20); It means for outputting the first calculation after receiving the complex multiplication signal and the reference signal error, the error signal (30); After a delay for receiving a received channel signal, means for outputting a delay signal (40); After controlling the gain for receiving the delayed signals, means for outputting the gain control signal (50); Receiving the error signal and the gain control signal after performing the complex multiplication, the second means for outputting a complex multiplication signal (60); After the second addition receives the complex multiplication signal and the count value, means for outputting an update coefficient value (70); It means for generating an address signal (80); Means for storing the updated count value in accordance with said address signal (90); Selection signal generating means for generating a selection signal in accordance with a symbol synchronization signal (100); It means for generating an initial counter value (110); And it is comprised of means 120 for selecting a value from the initial coefficient value and the updated coefficient value according to the select signal, according to the present invention using a pilot signal in order to efficiently remove the inter-symbol within the sample interfere with the exact channel even sudden change of channel estimation can be done meurosseo equalized adaptively.