论文部分内容阅读
提出并分析了一种适用于MIMO系统的新的链路自适应算法。通过接收端估计信噪比,并利用各种编码调制方式的特性,该算法在接收端采用递归的方法确定了每一个发射端子信道所采用的编码调制方式,使反向链路仅传输少量的控制信息,实现了链路的自适应。仿真结果表明,文章所提出的算法大大提高了MIMO系统的吞吐量,且可靠性也显著增加。
A new link adaptation algorithm for MIMO system is proposed and analyzed. By estimating the signal-to-noise ratio at the receiving end and using the characteristics of various coding and modulation schemes, the algorithm recursively determines the coding and modulation scheme adopted by each transmitting sub-channel at the receiving end so that the reverse link transmits only a small amount of Control information, to achieve the link adaptation. The simulation results show that the proposed algorithm greatly improves the throughput of the MIMO system, and the reliability is also significantly increased.