DS-UWB通信系统MAC协议设计  

MAC Protocol Design of DS-UWB Communication System

作　　者：吴婕[1] 朱轶[1] 雍建平[1] 

机构地区：[1]江苏大学计算机科学与通信工程学院,江苏镇江212013

出　　处：《计算机测量与控制》2011年第7期1784-1787,共4页Computer Measurement &Control

基　　金：国家863计划项目资助(2007AA04Z1B2)

摘　　要：在新加坡学者Peng-Yong Kong提出的CT-MAC协议研究的基础上,提出了一种修正的UWB通信系统MAC接入协议;算法针对DS-UWB通信物理层,修正了CT-MAC协议原有的最优冲突域计算方法,细化了协议流程;将修正的CT-MAC协议与IEEE802.11 DCF协议分别应用于同一个高速UWB通信系统,对MAC层性能进行仿真分析比较,仿真结果表明:由于CT-MAC协议的最优冲突域范围随带宽增大而减小,因而可保证网络具有更多的并发通信节点;相比较DCF协议,CT-MAC协议更适合DS-UWB通信系统。Based on the current concurrent transmission MAC（CT-MAC） protocol research of Peng-Yong Kong,this paper proposes a modified CT-MAC protocol for UWB communication system.This algorithm focuses on the DS-UWB physical layer,modifies the original optimization exclusion region calculation method and gives a better description of the process of CT-MAC.Furthermore,the modified CT-MAC protocol and IEEE 802.11 DCF protocol are compared by system performance analysis when they are applied to the same high-rate UWB system.Simulation results indicate that the exclusion region in CT-MAC protocol will reduce with the increasing bandwidth.Smaller exclusion region will ensure more concurrent transmissions.As a result,the CT-MAC protocol is more suitable for DS-UWB communication system if compared to the IEEE 802.11 DCF protocol.

关 键 词：超宽带通信 接入协议 冲突域 性能分析 

分 类 号：TN911[电子电信—通信与信息系统]