上行大规模天线系统能效分析  

Energy Efficiency Analysis of Uplink Massive Antenna System

作　　者：赵龙[1] 赵慧[1] 龙航[1] 郑侃[1] 王文博[1] 

机构地区：[1]北京邮电大学泛网无线通信教育部重点实验室,北京100876

出　　处：《北京邮电大学学报》2013年第6期60-63,68,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(61271183);中央高校基本科研业务费专项项目(2012RC0116);新世纪人才项目(NCET-11-0600);国家科技重大专项项目(2013ZX03003009)

摘　　要：为了分析大规模天线系统能效与谱效、基站天线个数及小区半径间的关系,为实际通信系统参数设置提供理论依据,针对采用迫零检测算法的上行大规模多输入多输出系统,引进实际功耗模型,推导出能效与谱效、接收天线个数及小区半径间的闭式关系,进而根据此闭式得到系统的最优能效、相应的谱效和消耗的功率.仿真结果表明,合理的谱效工作点设置、增加基站接收天线个数和减小小区半径是增强系统能效的重要手段.Analyzing the relation among energy efficiency, spectrum efficiency, the number of antennas at the base station and cell radius is helpful to the parameter design of the practical communication sys- tem. When zero-forcing detector was adopted in the uplink massive multiple-input multiple-output sys- tem, the closed-form expression among energy efficiency, the spectrum efficiency, the number of receiv- ing antennas and the cell radius were derived according to the realistic power consumption model. Fur- ther, the optimal energy efficiency, corresponding spectrum efficiency and power consumption were de- duced based on the closed-form. It is shown that the setting up of rational spectrum efficiency, the deplo- ying of more receiving antennas at the base stations and the shrinking of cell radius are three key meas- ures to enhance the system energy efficiency.

关 键 词：大规模多输入多输出系统 迫零 能效 谱效 

分 类 号：TN911[电子电信—通信与信息系统]