MULTIPLE CARRIER-BASED MULTIPLE ANTENNA SYSTEM AND OFDM TRANSMITTING METHOD USING THEREOF

摘要

A multiple carrier based multiple antenna system and an OFDM transmitting method using the same are provided to improve transmission efficiency by applying a SFBC(Space Frequency Block Code) method and a PCC preprocess method using an LCF(Linear Complex Field) code in a multiple antenna environment. A multiple carrier based transmission antenna system converts a signal transmitted by using a plurality of antennas in series or parallel, and encodes the converted signal by a precoding encoder(130). A serial/parallel converter(120) converts the modulated data symbol from series to parallel and transmits the converted data symbol to the precoding encoder. The precoding encoder transmits a coded signal in each antenna and the signal with an opposite phase to the coded signal by using different subcarriers and sets the sub carrier of the coded signal in at least one antenna identical to the subcarrier of the coded signal with the opposite phase of other antennas. The precoding decoder processes the received signal by applying an ML(Maximum Likelihood) method.