无线ATM通信网的定时信息恢复技术研究  

Research on Timing Recovery in Wireless ATM Networks

作　　者：吴晓文[1] 吴诗其[1] 李乐民[1] 孙海荣[1] 

机构地区：[1]电子科技大学

出　　处：《电子学报》1998年第4期59-65,共7页Acta Electronica Sinica

基　　金：电子科学研究院基金;国家"863"计划项目资助

摘　　要：本文对无线ＡＴＭ通信网ＣＢＲ业务定时信息的恢复技术进行了研究。提出了异步剩余时间标签（ＡＲＴＳ）技术，并通过码速调整改善收端的ＣＢＲ业务时钟性能，给出了实现方案。同时，提出采用ＡＲＴＳ　ＦＩＦＯ吸收定时信息的延时抖动。由于无线ＡＴＭ通信网的误码率较大，其信元丢失率较高，本文在分析ＲＴＳ的多重码速调整特性基础上，还提出了利用已收到相邻ＡＲＴＳ之间的差值规律来估计丢失的ＡＲＴＳ的新方法。理论计算和模拟结果表明，本文提出的定时信息恢复技术完全适用于无线ＡＴＭ通信网，并且与Ｂ－ＩＳＤＮ／ＡＴＭ采用的ＳＲＴＳ技术有较好的兼容性。This paper introduces a timing recovery technique for CBR traffic in Wireless ATM Networks .A novel technique named Asynchronous Residual Time Stamp( ARTS)combined with stuffing technique is pre-sented , the implement scheme is also discussed . In addition , areceived First-In-First-Out buffer is implemented toabsorb the cell delay jitter at the destination terminal,the regularity in the previously received ARTS is used toestimate the loss of the ARTSs . From the analysis and simulation niulation results, we know that the timing recovery tech-nique for CBR traffic proposed by this paper is adequate for Wireless ATM Networks , and it is compatible withSRTS for B-ISDN/ATM well.

关 键 词：定时恢复 ARTS 无线ATM通信网 

分 类 号：TN919.72[电子电信—通信与信息系统] TN92[电子电信—信息与通信工程]