摘要
为了解决蜂窝移动通信系统中传统空域分集技术在移动终端的多天线设置制约,一种新的空域分集技术———协作分集应运而生.与传统的空域多输入多输出系统相比,协作分集使得在多用户环境下,具有单天线的多个终端可以共享彼此的天线,以形成一个虚拟的多天线结构,实现空域分集.介绍了协作分集技术的基本概念、系统结构、协作协议、分类以及研究现状,分析研究了协作系统的可达速率区域以及相关性能,讨论了协作分集带来的优势、存在的问题以及后续的研究工作.
An overview of cooperation diversity was presented. The spatial diversity generally requires more than one separated antenna at the mobile terminal. Unfortunately, this is impractical in wireless cellular system due to the size or hardware complexity of the mobile terminal. To solve this limitation, a new form of spatial diversity called cooperation diversity was proposed. Compared to the spatial multiple-input multiple-output (MIMO) system, the cooperation diversity enables single-antenna mobiles in a multi-user environment to share their antennas so that each mobile is served by a virtual multiple-antenna transmitter/receiver. The conception, system structure, cooperation protocols, classification and research status of cooperation diversity were presented, and also, the advantages and problems introduced by cooperation and the open issues were discussed.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2005年第6期551-557,共7页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目(60272071)
教育部高等学校博士学科点专项科研基金资助项目(20020698024
20030698027).
关键词
协作分集
蜂窝系统
多输入多输出
可达速率区域
Diversity reception
Mobile telecommunication systems
Wireless telecommunication systems
