ZigBee物理层关键技术研究

The key Technology Research on Physical Layer of ZigBee

ZigBee技术具有省电、可靠性高、成本低、时延短、网络容量大、安全等优点,填补了低成本、低功耗和低数据传输速率的无线个人局域网和短距离无线应用的空白.本文介绍了ZigBee技术的特点,重点研究了2.4G物理层的规范及其编码、扩频和调制的过程.

ZigBee is a new technology with low power, high reliability, low delay, huge capacity, high security ete and it fills the gap of the low rate wireless personal area network and short range application. IEEE formed the 802.15.4 group in December 2000 which focuses on the physical layer and the protocol in the MAC layer of ZigBee, and Zigbee Alliance formed in October 2002. This paper introduces the origin and characteristics of the ZigBee technology, then focuses on the physical layer of norms in 2.4G spectrum, studies the coding, and spreads spectrum and modulation.