无线通信技术的空时编码技术的代码，研究信号的信噪比，调高信道质量-This is a function that simulate the Alamouti Space-Time scheme and plot a BER vs SNR graph

STBC-MIMO-OFDM This is a very good code for beginners. It computes the SER versus SNR for a Space time block coding MIMO-OFDM system.-STBC-MIMO-OFDM This is a very good code for beginners. It computes the SER versus SNR for a Space time block co