一种自适应传输策略的选取方法

摘要

针对无线通信信道的变化，为了提高频谱的利用效率，增加系统的吞吐量，提出了一种自适应传输策略选取方法。给出了仿真系统的总体设计框图，分析了主要部分的功能和作用；分别介绍了在加性高斯白噪声信道（ AWGN信道）下和变参信道（瑞利信道）下的自适应策略的建立准则，给出了在不同信道模型条件下自适应策略建立的依据和方法，并研究了对应传输策略的吞吐量。研究结果表明，自适应调制编码传输策略可以更好地利用信道条件，从而达到信道利用率的有效提升。%In view of variety of wireless communication channel,an adaptive transmission strategy select method is presented in order to raise spectrum utilization efficiency and throughput of the system.First,the general design block diagram of simulation system is presented and the functions of main part are analyzed.Then,the rule of adaptive transmission strategy in AWGN and parametric variation channel (Rayleigh channel) is introduced.The set⁃up foundation and method of adaptive strategy are presented in the condition of dif⁃ferent channel models,and the throughput of corresponding transmission strategy is studied. The results show that AMC transmission strategy can better utilize channel to raise utilization efficiency of channel.