AOS中基于最优帧长的链路自适应联合优化方法

LINK ADAPTATION JOINT OPTIMIZATION METHOD BASED ON OPTIMAL FRAME LENGTH IN AOS

针对AOS中数据传输误码率高的问题,导致系统吞吐量低的问题,提出基于最优帧长的链路自适应联合优化方法。该方法以系统吞吐量最大化为目标,联合可变帧长,自适应编码调制和混合自动重传请求技术进行优化,根据信道状态信息分配下一帧传输最佳的帧长和编码调制方式,并对出错数据进行纠错和重传,最终提升系统吞吐量。仿真验证表明,与AMC-HARQ和AMC-ARQ方法相比,该方法在保证系统误帧率的同时,提高了系统的吞吐量。

Aimed at the problem of high data transmission error rate in advanced orbiting system(AOS),resulting in low system throughput,a link adaptive joint optimization method based on the optimal frame length is proposed.To maximize system throughput,the method was optimized by combining variable frame length,adaptive coding modulation and hybrid automatic repeat request technology,and it assigned the best frame length and coding modulation method for the next frame transmission according to the channel state information.In addition,error correction and retransmission of erroneous data were carried out to improve system throughput.Simulation verification shows that compared with the AMC-HARQ and AMC-ARQ methods,the system throughput is improved while ensuring the system error rate.