Alamouti方案的仿真，双发双收，双发单收，单发多收的性能比较，信道为准静态平坦水落信道，信道噪声为高斯白噪声。-Alamouti scheme simulation, twin double income, double single income, single overcharged performance comparison, static channel subject to flat Mizuochi channel, channel noise is Gaussian white noise.