瑞利信道下的数据分组传输效率  

Transmission Efficiency of Data Packet in Rayleigh Channel

作　　者：俞一帆[1] 纪红[1] 乐光新[1] 

机构地区：[1]北京邮电大学电信工程学院,北京100876

出　　处：《北京邮电大学学报》2005年第3期55-58,共4页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(90104018;60172052)

摘　　要：根据GillbertElliott模型对瑞利衰落无线信道进行建模,利用该模型,研究了在无线信道内进行传输的数据分组的传输效率.相应的研究表明,分组的传输效率与其长度和信道传输条件有关.利用上述结果推导出了进行数据传输时分组所应设定的最佳帧长,并对推导结果通过仿真进行了验证.此外,根据上述结论,提出了针对不同业务及信道条件的新的动态帧长调整机制.The research on the transmission efficiency of data packet in Rayleigh fading channel is presented in the paper where the radio channel is modeled according to the GillbertElliott model. The research shows that the transmission efficiency depends on the packet size and the status of the channel where the packet is transmitted. Based on the founding, the optimal length of data packet during the transmission is deduced. The corresponding simulated is executed to testify the results of analysis. According to the results obtained from analysis and simulation, the dynamic adjustment mechanism on the packet size aimed at different service and channel condition is proposed.

关 键 词：GillbertElliott MARKOV 最佳帧长 数据分组 传输效率 

分 类 号：TN919.3[电子电信—通信与信息系统]