蓝牙技术在军事通信中的应用与发展

蓝牙技术是一种新型的无线技术,以低成本的近距离无线连接为基础,为固定与移动设备通信建立一种特别连接的短程无线电环境。介绍了蓝牙在军事方面应用所具有的灵活、开放、抗干扰性强等独特优势和它在军用设备间的线缆替代、小型武器平台内部的通信系统(车内装备的无线互连)、近距离通信指挥网络的组成(军用小型局域网)三方面的应用,以及军用蓝牙技术开发的一般方法。阐明了蓝牙在军事通信领域应用的可行性、迫切性和广泛前景。     

蓝牙系统定时和收发处理的实现

蓝牙(Bluetooth)是一种短距离低功耗无线技术，它提供低成本、近距离的无线通信，构成固定与移动设备通信环境中的个人网络，取代现有的PC、打印机、传真机和移动电话等设备上的有线接口，使得近距离内各种信息设备能够实现无缝资源共享。蓝牙系统的定时和收发处理是无线局域网的基础。它直接面对个人和商务的无线连接应用，为已存在的数字网络和外设提供通用接口(GB)以组建一个远离固定网络的个人特别连接设备群，即个人局域网PAN(Personal Area Network)。在既有的有线网路的基础上，完成网络无线化的构建。     

蓝牙1．1版及Wi—Fi无线局域线网新品集锦

新的蓝牙1.1规范的公布及Wi-Fi(IEEE 802.11,Wi-Fi是无线以太网兼容联盟的商标)无线局域网标准的广泛认可已经推动了相关芯片和产品的开发,在此基础上OEM厂商可以应用蓝牙无线技术,为他们的产品添加蓝牙连接的功能,毫不费力地实现与其他固定或无线设备进行通信。     

划时代蓝牙通信的研究与探索

蓝牙技术的出现是用户需求和通信技术发展的必然,蓝牙技术自身的特点决定了该技术在个人区域网络和短距离无线网络的重要地位。这里介绍了蓝牙技术的基本概念,并且与红外线传输和无线局域网进行了比较,重点分析了蓝牙的核心技术结构和应用模型。     

蓝牙接入BACnet的智能家居技术设计与实现

本文介绍了蓝牙技术、BACnet协议和蓝牙智能家居局域网的概念.提出了一种将基于蓝牙技术的个人区域网(PAN)与基于BACnet的小区内部局域网相连接的解决方案,讨论了算法实现步骤、协议软件连接和系统硬件构成.     

蓝牙芯片市场初露锋芒

蓝牙(Bluetooth)是一种短距离(10～100米)的新型无线通信技术，它以低成本、低功耗、近距离无线特别连接来替代有线电缆，使各种数据和语音设备互连互通，组成个人化信息网络，实现个人区域内快速灵活的数据和语音通信以个人范围内的信息共享、推动和扩大无线通信的应用范围。蓝牙使用开放的2．4GHZ ISM(工业、科学和医疗)频段，     

展望无线技术走近无线局域网

无线局域网技术（包括IEEE802.11、蓝牙技术、HomeRF等）将是新世纪无线通信领域最有良好发展前景的重大技术之一，本文着重介绍了无线局域网标准的进展，IEEE802.11、蓝牙技术、HomeRF等几种主流标准的比较，分析了无线局域网技术，市场，发展与应用前景。     

蓝牙射频技术漫谈

<正> 概述 蓝牙作为一种新的短距离无线通讯技术标准,具有广泛的应用前景,正受到全球各界的广泛关注。蓝牙技术有以下特点:支持用户在许多设备之间进行无线数据交换及文件同步,使移动电话、便携式计算机以及各种便携式通信设备之间在近距离内资源共享;支持非可视范围内的通讯与链接,且能在移动中进行无线连接和通讯;支持无线设备到有线网络之间的无线链接,只要连接到局域网的蓝牙接入点,就可以实现到有线局域网的无线数据连接;支持电路交换与分组交换,以支持语音、数据和视频信号传输。     

无线局域网技术及其应用

本文根据无线局域网的特点、组成及拓扑结构,通过对微波通信及微波扩频通信技术的介绍,分析了无线局域网的技术实现;阐述了无线局域网的四种互联方式：网桥连接型、基站接入型、HUB接入型及无中心结构;对802．11标准、蓝牙、HomeRF和IrDA四种无线局域网的协议标准进行了分析;从传输介质的脆弱性和WEP存在的不足,分析了无线局域网的安全隐患;揭示了无线局域网的优劣势。     

蓝牙核心技术

本文以核心协议为切入点,详细阐述了蓝牙的工作原理,同时也对蓝牙、IEEE802.11和HomeRF这三种主流个人无线局域网技术作了扼要的分析比较,从而说明了蓝牙巨大的市场与技术优势。     

An overview of the Bluetooth wireless technology

The Bluetooth^TM wireless technology is designed as a short-range connectivity solution for personal, portable, and handheld electronic devices. Since May 1998 the Bluetooth SIG has steered the development of the technology through the development of an open industry specification, including both protocols and application scenarios, and a qualification program designed to assure end-user value for Bluetooth products. This article highlights the Bluetooth wireless technology     

Future Applications of Bluetooth

Bluetooth is a short-range radio technology that is increasingly being provided in the various electronic devices that we carry around, such as laptops, mobile telephones and cameras. Bluetooth's supporters claim that it can deliver 'unprecedented productivity' through the seamless interconnection of these devices into a personal area network (PAN) — but does the technology really live up to this expectation? This paper investigates the claims surrounding Bluetooth, and compares its capabilities and potential applications with the existing technologies of DECT and wireless LAN. Bluetooth usage scenarios are considered in the areas of ad hoc networks, the home, the office environment, mCommerce and public access wireless hot-spots. Widespread implementation in devices does not mean widespread usage, and barriers to easy operation are examined to see if Bluetooth can move beyond its personal area network role into new areas of networking that could benefit a broad range of users.     

Reducing the cost of Bluetooth systems

The Bluetooth^TM industry has set itself an ambitious goal of just $5 for the implementation of a complete receiver/transmitter, including its DSP-based subsystem and associated ROM and RAM. Although this is unlikely to be realised until Bluetooth wireless technology has achieved considerable market penetration and gained economy of scale through very high volume production, some manufacturers appear to be closer to this goal than others. CSR, for example, had shipped over 1 million of its BlueCore single-chip Bluetooth radios by June this year, and 48% of all Bluetooth equipped end-user products on the market now contain this chip. This article takes a look at some of the design techniques that CSR has employed to reduce cost as much as possible, and outlines some of the issues that are likely to affect how quickly the market ramps up     

蓝牙认证中音频设备连接方法研究

蓝牙技术是一种全球统一的无线通信标准,任何使用蓝牙无线技术的产品只有通过BQB测试才能保证与市面上其他的蓝牙设备兼容。但是,目前蓝牙认证中音频设备连接方法存在一些问题,针对此问题提出一种新的连接方法,与现存技术相比,该方法既可以通过BQB测试,又能保证商用设备正确连接,同时也不给用户使用增加复杂的操作。     

蓝牙技术与协议的开发应用与实现

围绕最新的蓝牙1.1版本规范,概括了蓝牙的产生背景、技术特点和市场潜力、蓝牙开发等方面,最后介绍了有关的产品.     

基于UART传输层的蓝牙主机控制接口（HCI）的实现

蓝牙作为一种短距离的无线网络技术,为设备之间的互联提供了方便.使用蓝牙互联的大都是"智能主机",它具有处理器,总线和操作系统,蓝牙必须与它们有机的融合在一起才能发挥作用.本文分析了蓝牙主机控制器接口的工作原理,介绍了基于UART传输层的HCI的实现,并给出了实际应用的例子.     

Evaluating Bluetooth Performance as the Support for Context-Aware Applications

We present an experiment relative to the use of the Bluetooth wireless technology to provide network support for context-aware applications. We describe an approach to provide network interconnection using a combination of wireless and wired network technologies. We also describe the steps taken to create a Bluetooth based context-aware application. We, finally, evaluate, using a small test-bed and simulation the overall performance of this technology when adopted in the area of context-aware and ubiquitous computing.     

Mutual interference between independent Bluetooth piconets

The Bluetooth wireless communication technology provides wireless solutions applicable for a number of communications needs. In addition, multiple independent piconets are possible and likely to occur within the same location, either intentionally or by chance. Bluetooth devices utilize frequency hopping and independent piconets operate on different hopping sequences. Although the use of independently selected hopping sequences reduces the likelihood of mutual interference, as the number of colocated piconets increases, mutual interference becomes more likely. Mutual interference is also dependent on the performance requirements dictated by the application utilizing Bluetooth technology as well as the environment in which the piconet is operating. A method for analytically evaluating mutual interference for Bluetooth technology is presented. Models were developed for a single Bluetooth interferer as well as multiple interfering Bluetooth piconets operating in an arbitrary environment. The analytical models are based on two sets of parameters: Bluetooth interference and radio propagation. Empirical tests have been conducted to both support the derivation of the analytical models as well as to substantiate the analytical model results. The analytical results fall within the 95% confidence bounds of the empirical test results. Mutual interference analysis is presented based on evaluating the analytical model over a wide range of the multidimensional parameter space. The analytical model presented is a general approach well suited for evaluating mutual interference for applications using Bluetooth for data communications.     

基于蓝牙的汽车物联网应用与开发

为了深入研究和运用汽车物联网技术,从物联网定义出发,采用蓝牙核心技术,通过实验和归纳总结,将汽车的智能发展和蓝牙技术应用紧密相联,以蓝牙“摇控”为切入点,进一步研究和开发蓝牙潜在拓展运用,获得了汽车物联的应用场景,深刻揭示了基于蓝牙的汽车物联网应用和技术解决方案,得到了汽车物联的重要技术支撑,信息覆盖面大,应用上具有开发成本低廉,应用灵活方便,技术安全可靠等特点。     

蓝牙通信及其安全体系

蓝牙通信技术作为一种短距离无线通信技术,将广泛应用于个人办公或商务环境中。蓝牙通信协议栈包括专为蓝牙通信开发的核心协议、借用继承协议。蓝牙规范通过各种应用轮廓来支持各种具体应用业务。蓝牙通信技术具有较完整的安全体系结构,能实现设备级的身份鉴别和授权,并能实现链路级的数据加密通信。但是,蓝牙通信技术在安全方面仍有值得思考的地方。