APPARATUS AND METHOD FOR CHANNEL ESTIMATION IN MOBILE COMMUNICATION SYSTEM

摘要

PURPOSE: A channel estimator of a mobile communication system for improving the channel estimation performance by enhancing the density of a pilot is provided to use the data value which does not generate error in the channel estimation as the necessary pilot. CONSTITUTION: A sample symbol generator(113) performs HARQ(Hybrid Automatic Retransmit request) in case CRC(Cyclic Redundancy Check) checker(111) generates. The sample symbol generator generates initially transmitted data which is early transmitted to the sample signal. A estimator receives the retransmission signal. The channel estimator uses the sample signal as the pilot signal. The channel estimator presumes channel.