采用2发1收的MISO—OFDM系统，对STBC／ SFBC／STFBC在不同的频率／时问选择性信道环境下进行了性能仿真比较。-A comparison of STBC，SFBC and STFBC has been conducted under the different frequency／time seleetive fading channel by using two by one MISO—OFDM system．