飞思卡尔ZigBee射频芯片MC13192的原理与应用

ZigBee技术是一种低速率无线传输技术，它基于IEEE802．15．4标准，工作频率为868MHz、915MHz或2．4GHz，其中2AGHz是一个开放的频率。该技术的突出特点是应用简单、电池寿命长、组网能力强、可靠性高以及成本低。与已经在市场上推广了很多年的蓝牙技术相比，ZigBee技术的传输速率要低一些（ZigBee的峰值速率为250kbps，蓝牙的峰值速率为750kbps），但ZigBee的待机功耗比蓝牙要低1到2个数量级（ZigBee为3～40μA，蓝牙为200μA）。     

五大短程无线技术争雄融合还是对立?

ZigBee、UWB、Wi-Fi、蓝牙和NFC五种短程无线技术,优势和挑战并存,短期内融合仍是梦想,各自找准位置才是上策     

新应用助推ZigBee

如今,各种近距离无线传输技术层出不穷,在竞争如此激烈的环境下,ZigBee之所以能够脱颖而出,杀手锏就是其弥补了低功耗、低成本、短距离无线市场的空缺。随着通信距离的增大,设备的复杂度、功耗以及系统成本都在增加。相对于现有的各种无线通信技术,ZigBee技术将是最低功耗和低成本的技术,非常适合于低速率的无线传输应用。ZigBee技术优势ZigBee是一组基于IEEE批准通过的802.15.4无线标准研制开发的,有关组网、安全和应用软件方面的技术标准。与蓝牙、Wi-Fi、UWB等无线接入技术相比,ZigBee具有以下几方面的优势:*低速率。Zigbee工作…     

基于ZigBee技术的无线传感器网络构建与应用

一、引言 无线网络的市场发展在逻辑上可分为两类：面向语音的市场和面向数据的市场。在许多以数据传输为主的无线网络中，小型、低成本、低复杂度的无线网络的应用场合十分广泛。ZigBee是其中一种具有代表性的短距离无线通信技术，其网络标准由IEEE802．15．4规定。ZigBee协议比蓝牙、高速率个人局域网（PAN）或者IEEE802．11x无线局域网更加简单实用。     

2.4GHz无线技术标准及ZigBee抗干扰性能

介绍了ZigBee和其他几种工作于2.4GHz ISM频段的短距离无线通信技术标准,Wi-Fi、蓝牙和无线USB,对ZigBee本身的抗干扰性能以及与其他无线技术的共存进行了分析,讨论了如何保证ZigBee避免干扰和改善其共存性能.     

无线网络技术的全面升级

<正>主流无线网络技术正在不断革新,尤其自全球金融危机后,许多标准的推出,造就新一代无线网络技术的不断演进。从而呈现三分天下的局面,Wi-Fi、蓝牙、ZigBee三项技术各有所长,也各有所短,为了     

第一个802.11b与蓝牙技术的联合参考设计

网络开发商Intersil和SiliconWave联合发布了一个参考设计,采用迷你型的PCI设计,允许同时使用Bluetooth（蓝牙）和 Wi-Fi（IEEE802.11b）技术。 作为低成本和高性能的最优化设计,Blue802参考设计采用了来自无线个人局域网络开发商Silicon Wave的蓝牙SiW1700系列芯片集和来自WAN开发商Intersil的Prism3芯片集。该设计允许蓝牙和Wi-Fi无线收发设备共享同一个PC主板、主机接口和天线——从而节省了用于集成和购买材料的费用。 Blue802技术在两个芯片集中用做软件升级,以确保未来产品迅速面市。该技术支持蓝牙应用,如鼠标、键盘、打印机、文件传输和便携设备的同步,以便这些     

物联网中常用的几种短距离无线通信技术

短距离无线通信技术的快速发展有力的推动了物联网技术的发展。文章重点介绍了物联网中主要应用的RFID、蓝牙、ZigBee、Wi-Fi等几种短距离无线通信技术的特点及其应用领域。     

基于ZigBee的无线通信技术及其应用

ZigBee是一种新兴的短距离无线通信技术,目标是填补低速率无线应用市场的空白.详细介绍ZigBee技术及其主要特点,并把其与其他几种短距离无线通信技术,如红外、Wi-Fi、home RF和蓝牙作出了比较,重点分析了ZigBee节点的硬件实现模式,并且对其在无线通信市场,包括短距离无线通信系统和无线传感器网络方面的设计与应用方案进行了研究.     

高集成与低功耗：引领RF4CE全业务平台的设计要素

基于ZigBee/IEEE 802.15.4协议的RF4CE技术由RF4CE联盟与ZigBee联盟（ZigBee Alliance）合作共同开发。除更出色的遥控功能外,ZigBee RF4CE还允许电器设备之间的双向交互。目前常用的家电,如高清数字电视、家庭影院系统、机顶盒、音频设备,以及无钥匙门禁系统等应用都将从最新的ZigBee RF4CE技术中受益。从此,射频遥控将有望彻底取代传统红外（IR）技术,成为家电遥控的射频新标准。     

Bluetooth and Wi-Fi wireless protocols: a survey and a comparison

Bluetooth and IEEE 802.11 (Wi-Fi) are two communication protocol standards that define a physical layer and a MAC layer for wireless communications within a short range (from a few meters up to 100 m) with low power consumption (from less than 1 mW up to 100 mW). Bluetooth is oriented to connecting close devices, serving as a substitute for cables, while Wi-Fi is oriented toward computer-to-computer connections, as an extension of or substitution for cabled LANs. In this article we offer an overview of these popular wireless communication standards, comparing their main features and behaviors in terms of various metrics, including capacity, network topology, security, quality of service support, and power consumption.     

Topics in integrated circuits for communications [Series Editorial]

Over the past several years, mobile personal communication devices have converged to a few popular platforms including the smart phone, personal media player, and personal navigation device. More recently, a miniature laptop known as a netbook has also become increasingly widespread. Common in all these devices is the incorporation of multiple communication functions such as personal navigation, personal area networking, local area networking, wireless personal area networking, TV reception, and mobile cellular networking. Moreover, many of these functions are provided via different communications standards; for example, the Global Positioning System (GPS) for personal navigation, IEEE 802.11a/g/n (otherwise known as Wi-Fi) for wireless local area networking, and Bluetooth and IEEE 802.15.4 (ZigBee) for wireless personal area networking. In the case of TV broadcasting, standards are well established but extremely fragmented. A short list of digital TV broadcast standards includes DVB-H, DVB-T, ISDB-T, T-DMB, CMMB, and MediaFLO. Cellular standards likewise are still fragmented based on GSM/EDGE and WCDMA/UMTS although the cellular industry is working diligently toward a consolidated fourth-generation system based on Third Generation Partnership Project (3GPP) Long Term Evolution (LTE).     

支持M2M应用的无线网络技术及发展

将来当计算机和通信设备遍布所有地方时,通信不仅是人-人和人-机之间,而且还包括机-机(M2M)之间的通信.在未来某一天,由机器产生的流量将大大超过人-机应用和人-人应用产生的流量.大量M2M应用需要用各种无线网络来支撑.本文旨在介绍迄今可用于机对机应用的各种无线网的特点和优劣,包括WiFi、蓝牙、ZigBee、无源RFID和802.15标准.     

短距离低功率无线通信接入系统

短距离低功率无线通信接入技术主要集中在物理层和媒体访问控制（MAC）层,包括蓝牙、超宽带（UWB）和Wi-Fi等。蓝牙是链接近距离设备的电缆数据传送的辅助技术;UWB作为窄脉冲无线电技术链接众多电子设备,提供宽带无线接入的灵活性和移动性;Wi-Fi给快速接入设备和WLAN内移动设备提供无线链接,用于较长距离链接,支持一定功率的移动终端接入。短距离低功率无线通信接入系统的标准化进程非常快,辅助标准多,但目前仍以蓝牙和Wi-Fi为主。     

Wireless communications and networking: an overview

This paper presents an overview of wireless local-area networks (LANs) and wireless personal area networks (PANS), with emphasis on the two most popular standards: IEEE 802.11, and Bluetooth. While there are many such surveys in the current literature and online, we attempt here to present wireless LANs and PANS in a unified fashion as a viable alternative to wired LANs, while stressing the remaining challenges and limitations     

短距离无线通信技术综述

随着网络及通信技术的飞速发展，人们对无线通信的需求越来越大，也出现了许多的无线通信协议。文章对目前使用较广泛的蓝牙、802．11(Wi—Fi)和IrDA无线协议分别进行了阐述，比较了他们技术上的异同点。讨论了在选择、使用这些技术时应注意的问题，对较具发展潜力的新无线技术标准UWB，zigBee也进行了阐述。对他们的未来应用进行了展望。     

Emerging standards for wireless mesh technology

Wireless mesh networking is a promising technology for numerous applications which appeals especially to those applications that cannot be directly supported by other wireless technologies. The commercial success of Wi-Fi and the advances in many wireless technologies have in part stimulated the development of wireless mesh networks. The persistent driving force, however, comes from the envisioned advantages of wireless mesh techniques themselves, including extended coverage, robustness, self-configuration, easy maintenance, and low cost. This article presents an overview of this emerging technology, focusing on the technical merits and related standards activities of IEEE and ZigBee that are actively applying the concept of multi-hop mesh techniques in the field of wireless networking technologies, ranging from personal area networks (PANs) to metropolitan area networks (MANs).     

Coexistence of 2.4 GHz sensor networks in home environment

The IEEE 802.15.4 is one of the low-layer communication standards for personal area networks(PANs) and wireless sensor networks(WSNs),which may be interfered by other wireless devices in the industrial,scientific and medical(ISM) frequency bands,especially in home environment,such as devices of IEEE 802.11b,Bluetooth,cordless telephone,and microwave oven radiation.This article examines the mutual interference effects of 2.4 GHz devices widely deployed at home,via both theoretical analysis and real-life expe...     

Enabling collocated coexistence in IEEE 802.16 networks via perceived concurrency - [WiMAX update]

Multiple wireless interfaces (GSM, Wi-Fi, Bluetooth, FM, and GPS receiver, etc.) are being integrated into mobile devices. WiMAX, an IEEE802.16-based wireless access technology recently included in the IMT-2000 set of standards by ITU-R, will soon be added. Obstacles remain to operating these collocated radios concurrently, including interference and hardware conflicts due to congested spectrum allocation and component sharing with radio integration. In this article we provide a tutorial overview of today?s solutions to enable concurrent operation of multiple collocated radios in IEEE 802.16- based wireless networks with a focus on perceived concurrency: a MAC coordination approach. We then present three general design principles ? predictability, compressibility, and flexible scheduling ? with examples of standard features. It is anticipated that the next-generation IEEE 802.16 standards will be enhanced with new features such as explicit service setup, asynchronous operation, and collocated coexistence- aware scheduling.     

未来家庭网络中的无线技术

介绍迄今可用于家庭网络中的各种无线技术的特点和优劣，包括IrDA、Wi—Fi、HomeRF、Bluetooth、DECT、HiperLAN、UWB、IEEE802．15标准、ZigBee和Z-Wave。无线家庭网络在成本、可靠性和移动性等方面具有无可比拟的优势，关于它的应用与发展正越来越受到人们的关注。