Abstract:

This paper studies the three typical space-time coding technology: the space-time layered code (LSTC),space-time block codes (STBC),and the space-time grid code (STTC);and discusses their coding and decoding principle.With emphasis on space-time block code,the OFDM systems are introduced in detail.The basic principle of the space-time block codes and OFDM technology combining STBC-OFDM system of basic model are discussed.A theoretical analysis is made of the receiver SNR performance,and a comparison is made through MATLAB simulation of ber performance with different numbers of antenna.The reliability of the STBC-OFDM system is validated.

Key words: space-time coding;OFDM;space-time block codes;MIMO