超宽带无线通信技术的新进展  

Updated progress in ultra-wideband radio communications technology

作　　者：李育红[1] 周正[1] 

机构地区：[1]北京邮电大学无线网络实验室,北京100876

出　　处：《系统工程与电子技术》2005年第1期20-24,99,共6页Systems Engineering and Electronics

基　　金：国家自然科学基金项目(60372097);北京市自然科学基金项目(4052021);韩国仁荷大学IT研究中心项目(ZNAAUWB-ITRC)资助课题

摘　　要：首先简要介绍了超宽带(UWB)的系统性能特点及UWB的调制与多址接入技术,然后着重讨论了UWB的最新进展,包括:IEEE802.15.3aUWB多径信道模型,UWB的多入多出(MIMO)系统,UWB的正交频分复用(OFDM)系统以及定位于低速无线个域网(LR-WPANs)的802.15.4a标准。最后提出几个值得探索的研究方向,如:寻求一种新的适合分析非正弦窄脉冲的UWB系统的无线通信理论等。Some general system characteristics, modulation techniques as well as multiple access techniques of Ultra-Wideband (UWB) are introduced briefly. Focusing on the key advances of UWB, UWB channel model proposed by the IEEE 802.15.SG3a, UWB multiple-input multiple-output (MEMO) systems, UWB orthogonal frequency division multiplexing (OFDM) systems and the IEEE 802.15.4a standard for low rate wireless personal area networks (LR-WPANs) are discussed. Finally, several valuable research directions are put forward, such as seeking a new wireless communications theory adapted to analyze nonsinusoidal UWB impulse radio, etc.

关 键 词：无线通信 超宽带 超宽带多入多出系统 超宽带正交频分复用系统 低速无线个域网 

分 类 号：TN915.1[电子电信—通信与信息系统]