Apparatus and method for providing efficient transmission using block coding and cyclic delay diversities in the ofdm based cellular systems

The present invention is an orthogonal frequency code division multiplexing / code division multiple access in a communication system that supports a transmit diversity, in particular, to efficiently support transmit diversity for the same broadcast signals transmitted from at least two base station devices and methods It is to provide a. The present invention relates to implementing diversity to a plurality of base stations located within a cell and having a radio network controller to at least two transmit antennas in consideration of the situation of the radio channel the mobile terminal is located, consisting of at least three sectors transmitting information for, and is characterized in that for encoding the data to the base station in the cell to be transmitted according to the information space-time block, and sent to the mobile terminal via the at least two transmit antennas by applying different cyclic delays. Space time block coding, SFBC, cyclic delay, macrodiversity