The simulation results based on siso and mimo systems show that the proposed scheme could effectively eliminate the time - variant fading characteristics of wireless channel and under an acceptable demand of ber , the frequency efficiency is enhanced greatly and besides , dynamic encoding is implemented with low complexity and high efficiency 通过在单天线和多天线系统中的仿真,表明该方案可以有效的克服无线信道的时变衰落特性,在满足误码率性能要求的基础上可以提高系统频谱利用率,且实现复杂度低。