A hybrid automatic repeat request(HARQ) scheme is presented base on 2×2 antenna array.The proposed method system transmit signal as Bell Labs layered space-time(BLAST) to get high output.If failed,the system resend signal that can combine with first signal to form space-time block code(STBC).The BLAST have high data rate but easy to be disturbed,and the STBC can resist interference very well.The combinations of them increase the output and robust of system greatly.The proposed method unites the advantage of...