通信学报Issue(1)：167-172,6.DOI:10.3969/j.issn.1000-436x.2014.01.019
基于干扰对齐的认知MIMO系统频谱共享与用户调度
Interference alignment based spectrum sharing and user scheduling for cognitive radio MIMO system
摘要
Abstract
In communication scenario with multiple cognitive radio (CR) multi-input multi-output (MIMO) users, signal processing algorithm was designed based on interference alignment (IA) such that transmissions of cognitive and autho-rized signal were carried out in mutual orthogonal sub-spaces. Conflict-free utilization of spare spatial channel(s) autho-rized by primary system was achieved by cognitive user. Moreover, the difference of spatial transmission performance originating from various channel matrices was exploited to implement appropriate user scheduling. Simulation results show that the proposed method can utilize spare spatial channel resource effectively and obtain multiuser diversity gain. On the premise that authorized service is protected from disturbing, transmission rate of cognitive user is improved.关键词
干扰对齐/认知无线电/MIMO系统/多用户Key words
interference alignment/cognitive radio/MIMO system/multiuser分类
信息技术与安全科学引用本文复制引用
李钊,李建东,刘勤,申彪..基于干扰对齐的认知MIMO系统频谱共享与用户调度[J].通信学报,2014,(1):167-172,6.基金项目
国家自然科学基金资助项目(61231008,61102057) （61231008,61102057）
重大专项基金资助项目(2012ZX03003005-005) （2012ZX03003005-005）
国家重点基础研究发展计划(“973”计划)基金资助项目(2009CB320404) （“973”计划）
高等学校引智计划基金资助项目(B08038) （B08038）
长江学者和创新团队发展基金资助项目(IRT0852) （IRT0852）
ISN基金资助项目(ISN1103005) （ISN1103005）
@@@@The National Natural Science Foundation of China (61231008,61102057) （61231008,61102057）
National S&T Major Project (2012ZX03003005-005) （2012ZX03003005-005）
The National Basic Research Program of China (973 Program)(2009CB320404) （973 Program）
The 111 Project (B08038) （B08038）
Program for Changjiang Scholars and Innovative Research Team in University (IRT0852) （IRT0852）
ISN Project (ISN1103005) （ISN1103005）
