零中频无线自组网物理层设计与实现

发布时间：2018-01-14 10:24

本文关键词：零中频无线自组网物理层设计与实现　出处：《西安电子科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：MANETs(Mobile Ad-hoc NETworks,无线移动自组网络)由一组可移动的无线节点设备构成;是一个具有节点自治功能的通信网络系统;是一个可以不需要依靠现有的通信网就可以迅速构建可提供正常使用功能的网络体系;是一个可以工作在较少甚至没有人工干预支持情况下的通信网;是一个没有任何中心实体并且能够自组织以及自愈合的通信网络系统;是一个网络内节点以无线传输信道进行通信和交换信息,从而实现信息和服务的共存的网络结构;是一个尽管网络内节点设备常常在没有事先示警的情况下动态地、随意地、频繁地加入网络和退出网络,但也能够迅速自调整自愈合保持通信能力而不会摧毁网络中其它节点间正常通信的自组织网络[1]。其特点包括:对等性;节点游牧性;带宽有限、链路容量易变;网络拓补可能随机、迅速、不可预测地变化;节点设备多样且受其本身的若干特性(电池能量、设备处理能力等)限制;比固定网络更易受物理安全威胁。在无线自组网中,存在许多关键技术问题,本文结合实际所搭建软件无线电平台架构,在物理层的设计与实现上做了一定的研究。MANETs物理层的设计主要参考已有的各项无线传输协议标准,如IEEE802.11协议系列、蓝牙传输协议、Hiper LAN协议等标准所定义的物理层。本文主要工作包括:根据无线自组网特点,给出了一种基于软件无线电的零中频无线自组网硬件实现方案;设计基于软件无线电系统架构的无线自组网节点框架并进行了模块功能划分和方案设计;论述了无线自组网节点收发系统设计过程,重点对直流抑制算法和同步算法做了详细分析;针对本文所设计自组网节点平台,研究了物理层功率管理与控制技术、接收自动增益控制技术和接收信号能量指示的实现;协助上层开发设计人员完成自组网相关测试,提供了正确的物理层处理功能。本文以软件无线电平台和微软提供的Sora平台为核心,搭建了测试系统,对软件无线电平台各个模块做了简单功能测试和性能分析,验证了节点平台设计的正确性和合理性,可满足实际运用需求。
[Abstract]:MANETs (Mobile Ad-hoc NETworks, wireless mobile ad hoc network) mobile wireless node equipment can be composed of a group; is a node with the autonomous function of communication network system; one can not need to rely on the current communication network can be quickly constructed can provide normal use function of the network is a system; in less or even no manual intervention to support the communication network condition; there is no central entity and can self organization and communication network system self-healing; is a network node for communication and exchange of information in the wireless channel, the network structure so as to realize the coexistence of information and services; is a while the nodes in the network devices are often dynamically, without prior warning in the case of random, frequently join or exit the network, but also be able to quickly adjust the self maintaining communication can self-healing Force without destroying the rest of the network node between the normal communication of the self-organizing network [1]. features include: equivalence; nomadic nodes; the limited bandwidth, variable link capacity; network topology may be random, rapid, unpredictable changes; diversity and node equipment are subject to a number of its own characteristics (processing capacity of battery energy equipment etc.) restrictions; more susceptible to physical security threats than the fixed network. In the wireless ad hoc network, there are many key technical problems, this paper builds a software radio platform architecture, the design of the main reference of the existing research of.MANETs physical layer of the wireless transmission protocol design and implementation in the physical layer, such as the IEEE802.11 protocol series, Bluetooth transmission protocol, the physical layer defined by the Hiper LAN protocol standards. The main work of this paper include: according to the characteristics of wireless ad hoc networks, a method based on software is given Radio zero if wireless ad hoc network hardware design; software radio system architecture for wireless ad hoc network node framework and designed the modules function and discusses the scheme based on wireless network; node transceiver system design process, focusing on the DC suppression algorithm and synchronization algorithm are analyzed in detail based on the design of ad hoc networks; node platform, on the physical layer power management and control technology, automatic gain control technology and realize the receiving signal energy indicator; assist in the development and design staff to complete ad hoc networking test, provides the correct physical layer processing function. This paper is based on the software radio platform and Microsoft Sora platform as the core, build a test the system of software radio platform, each module of the simple function test and performance, verify the correctness of the design and node platform It is reasonable and can meet the needs of practical use.

【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5

【相似文献】