摘要
当次用户配置多天线的认知无线电多天线系统,需要主要考虑4方面的因素:对主用户系统的干扰功率不能超过特定阈值;次用户系统的最大互信息应该最大化;次用户系统的能源效率的提高;满足次用户系统中用户的服务质量。针对此问题,该文提出了一种具有闭合解的次优方案。分析和仿真结果表明,所提方案兼顾了这4方面的因素,并且具有较高的能源效率和次用户系统的最大互信息。
When second users configure multiple antennas of a cognitive radio antenna system,four factors should mainly be considered,including avoiding the excess of a certain threshold by the primary user system interference power, maximizing the maximum mutual information user system,improving the user system energy efficiency,and satisfying the users in the service quality system.Aiming at this problem,this paper presents a sub-optimal solution with closed solution.Analyses and simulations show that the proposed scheme combining the four sorts of factors has high energy efficiency and maximum user system mutual information.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第7期924-928,共5页
Journal of Tsinghua University(Science and Technology)
基金
浙江省科技厅高技能人才培养和技术创新活动资助项目(2102R30059)
浙江省高职高专院校专业带头人专业领军项目(lj2013081)
