基于序贯检测的信元容错定界机制  

Error-tolerant cell delimitation scheme of asynchronous transfer mode based on sequential detection

作　　者：范亮[1] 王晓梅[1] 梅关林 

机构地区：[1]信息工程大学信息系统工程学院,郑州450001

出　　处：《计算机应用》2016年第A02期18-21,24,共5页journal of Computer Applications

基　　金：西南电子电信技术研究所资助项目(2014024)

摘　　要：针对高误比特率的信道条件下异步传输模式(ATM)中信元定界问题,在传统的信元定界机制的基础上提出了一种基于序贯检测的信元容错定界机制。该机制利用序贯检测的方法设计判决规则,从而可在预同步状态时实现系统状态的有效转换,降低信元的"漏检"概率,缩短信元同步时间,最终提高信元的容错定界性能。随后,针对两种定界机制分别建立马尔可夫模型,并依据模型对系统性能分别进行理论分析和仿真验证,结果表明在高误比特率的信道条件下该定界方法的性能要优于传统方法,具有较好的容错能力。In order to improve the performance of cell delimitation in high bit error rate channel, this paper proposed a cell delimitation scheme based on sequential detection, developed from the conventional one. An efficient rule was designed for system state changing with the sequential detection method, which can decrease the missing rate of Asynchronous Transfer Mode （ATM） cell, shorten the delimitation time and enhance the error-tolerant capability of the system. Then, with the Markov models of the presented schemes, the influences of system parameters were analyzed and verified. The results show that the proposed scheme outperforms the conventional one, providing a good error-tolerant ability.

关 键 词：无线ATM 容错 定界 序贯检测 

分 类 号：TP393.0[自动化与计算机技术—计算机应用技术]