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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 sub-users configure multi-antenna cognitive radio multi-antenna system, four main factors need to be considered: the interference power to the primary user system can not exceed a certain threshold; the maximum mutual information of the secondary user system should be maximized; the energy of the secondary user system Improve the efficiency; meet the secondary user system, the quality of service of users. To solve this problem, this paper proposes a suboptimal solution with closed solutions. The analysis and simulation results show that the proposed scheme balances these four factors and has high energy efficiency and maximum mutual information of secondary user systems.