计算机技术与发展Issue(8)：103-107,112,6.DOI:10.3969/j.issn.1673-629X.2015.08.022
一种认知无线电中新型干扰对齐算法
A New Interference Alignment Algorithm in Cognitive Radio System
摘要
Abstract
As a new interference management method,interference alignment can compress the interference signal space and improve the Degree Of Freedom ( DOF) ,much attention has been paid to the interference alignment. In this paper,propose a dual-layer pre-coding interference alignment scheme in a Multiple Input Multiple Output ( MIMO) cognitive radio system including one primary user and K sec-ondary users. The Minimum Mean Square Error ( MMSE) of the primary user is guaranteed,at the same time,the first layer pre-coding matrix allows the secondary users to share the same frequency band of the primary user without generating any interference to the primary user,thus improving the spectrum efficiency of the system. The second layer pre-coding matrix assures the interference between the sec-ondary users is aligned,improving the capability and DOF of second users. The numerical results show that compared with conventional interference alignment schemes in cognitive radio system,a higher date rate of the secondary users is achieved.关键词
双层预编码/干扰对齐/认知无线电/多输入多输出Key words
dual-layer pre-coding/interference alignment/cognitive radio/MIMO分类
信息技术与安全科学引用本文复制引用
王小冲,刘陈,傅友华..一种认知无线电中新型干扰对齐算法[J].计算机技术与发展,2015,(8):103-107,112,6.基金项目
国家自然科学基金资助项目(61372126,61302101) （61372126,61302101）
江苏省自然科学基金资助项目(BK20130874) （BK20130874）
东南大学移动通信国家重点实验室开放研究基金课题(2012D11) （2012D11）
