一种基于CDMA自组网的通信网络MAC准同步协议  

A Proposal of MAC Protocol for Wireless Ad Hoc Networks Based on QS-CDMA

作　　者：黄金城[1] 田明[1] 项慧慧[1] HUANG Jin-cheng;TIAN Ming;XIANG Hui-hui(Department of Information Engineering,Yancheng Institute of Technology,Yancheng 224051,China)

机构地区：[1]盐城工学院信息工程学院,江苏盐城224051

出　　处：《软件导刊》2020年第9期251-255,共5页Software Guide

摘　　要：为了提高无线自组网通信网络吞吐量和数据包发送成功率,提出一种基于准同步CDMA的自组网MAC协议,并对其收发电路进行设计。在采用零相关区序列的准同步CDMA系统中,到达接收端的各用户信号存在一定的相对时延,如果用户信号相对时延控制在零相关窗口范围之内,可以达到近似于同步的效果,同时零相关序列的相关性能大大提高了系统抗多址干扰和多径干扰能力。仿真结果表明,该协议的系统吞吐量是未采用零相关序列系统的5倍,在数据包发送数为50时仍有30%的发送成功率。In order to improve the throughput and RTS success rate of wireless AD hoc networks,this paper proposes a media access control(MAC)protocol for Wireless Ad Hoc Networks and gives the fundamental hardware design of transmitter and receiver circuits.A quasi-synchronous CDMA system(QS-CDMA system)which uses a set of sequences with a zero correlation zone called ZCZ code as a spreading code is useful for wireless communications,because of excellent properties such as co-channel interference free performance. The simulation results show that the throughput of this protocol is 5 times as larger as that of unassign sequence,and when the number of packets is 50 the RTS success rate remains 30%.

关 键 词：码分多址 MAC协议 零相关序列 自组网 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]