变换域通信系统:原理、技术与发展趋势  

Principle,Technology and Tendency of Transform Domain Communication System

作　　者：史军[1] 迟永钢[1] 张乃通[1] 

机构地区：[1]哈尔滨工业大学电子与信息技术研究院,黑龙江哈尔滨150001

出　　处：《南京邮电大学学报（自然科学版）》2009年第1期87-94,共8页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

基　　金：国家重点基础研究发展计划(973计划)(2007CB310606)资助项目

摘　　要：变换域通信系统(TDCS)是指能适应快速变化的无线通信环境,主动避开干扰,具有低截获(LPI)传输信号波形的一种智能无线电技术,它以其良好的自适应性和兼容性受到越来越广泛的关注,有望成为实现认知无线电(CR)的一项潜在的候选技术。TDCS的提出为解决不断增长的无线通信应用需求与日益紧张的无线频谱资源之间的矛盾提供了一种有效的途径。简述了TDCS的基本原理,对TDCS涉及的变换域技术、频谱估计和数据调制等关键技术进行了总结分析,并结合当前的发展状况对该技术未来的发展趋势进行了预测。Transform domain communication system （TDCS） is an intelligent radio technology with a low probability of intercept （LPI） signals, which can adapt to a fast changing electromagnetic environment and initiatively avoid interference. By the virtue of its adaptability and compatibility, TDCS has increasingly received widespread attention and shows promise as a potential candidate for enabling cognitive radio （CR）. It has been proposed as an effective solution to the contradiction arising from the rapid growing demands of wireless communication applications and the scarcity of spectrum resources. In this paper, the basic principle of TDCS and its key techniques, such as transform domain technology, spectrum esti- mation and data modulation, are discussed. According to the current research, the development tendency of this technology is also predicted.

关 键 词：变换域通信系统 频谱估计 基本调制波形 抗干扰 低截获 

分 类 号：TN914.42[电子电信—通信与信息系统]