摘要
提出了一种在协同多入多出(Co-MIMO,collaborative MIMO)系统中的自适应用户数选择算法。基站向调度器报告各个移动台从本基站接收到的信号、干扰及噪声功率,调度器据此计算各个基站支持用户数的最佳方案,反馈给相应的基站。自适应方案根据信道的变换灵活改变基站和移动台之间的从属关系,达到有效降低小区边缘用户的小区间干扰、优化小区边缘系统容量的目的。仿真结果证明了在发射端多用户预编码下自适应支持用户数选择算法相对于支持固定用户数的优势。
A new strategy in which the number of users is chosen adaptively is proposed for the collaborative multiple input multiple output （Co-MIMO） systems. The scheduler determines the optimal user number for each base station, according to the information reported by the mobile station （MS） pertained to the corresponding BS. The information includes the signal gain, interference power and noise power. This strategy changes the appurtenant relations between the BS and MS flexibly, thus the inter cell interference （ICI） of the MSs which are located at the edge of cells is reduced, and the capacity of the cellular system is also improved. Simulation results show the superiority of the proposed strategy over the traditional ones.
出处
《中国电子科学研究院学报》
2009年第6期641-645,共5页
Journal of China Academy of Electronics and Information Technology
基金
国家自然科学基金项目(60802082)
教育部博士学科点新教师基金项目(200800131023)
中国移动研究院资助
