Structure and Performance of Space-Time Block Code

This paper introduce the structure of STBC (space time block code) which is based on the crossing coding. First we introduce the Alamouti code, then we give the rules of the construct STBC. We also introduce the STTC in the 3GPP, which is the critical transmit diversity technology. After that we compare the performance of the different receive antennas and different modulation in the Rayleigh fading channel. From the simulation results we can draw the conclusions that the STBC could improve performance