MOBILE COMMUNICATION SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS AND METHOD FOR ADAPTIVELY ALLOCATING PILOT SUBCARRIER THEREIN

摘要

The present invention relates to an orthogonal frequency division multiple access (OFDM) mobile communication system and an adaptive pilot subcarrier allocation method thereof, and more particularly, to a method and apparatus for estimating a channel using a pilot signal in a mobile communication terminal The pilot allocation parameters are fed back to the base station in the mobile communication terminal. When the pilot allocation parameters are received, the base station allocates the pilot subcarriers to the mobile communication terminal according to the pilot allocation parameters, Signal. According to the present invention, a pilot subcarrier can be adaptively allocated according to a channel environment between a base station and a mobile communication terminal in a mobile communication system. ; Orthogonal frequency division multiple access, base station, pilot subcarrier, coherence frequency, coherence time