分层空时编码技术是提高无线信道传输速率和容量的一种非常有效的方法。在无需提高信号发射功率和额外增加带宽的情况下就可以大幅度的提高系统容量。但是，分层空时编码无法获得最大分集增益，所以接收端在恢复信号时选用的译码算法对系统性能至关重要。-Layered space-time coding technology is to improve the wireless channel transmission rate and capacity of a very effective method. Without having to increase the signal transmission power and extra bandwidth can significantly improve the system capacity. Layered space-time coding, however, could not obtain maximum diversity gain, so the receiver choose when to restore signal decoding algorithm is very important to system performance.