北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2013, Vol. 36 ›› Issue (6): 60-63,68.doi: 10.13190/j.jbupt.2013.06.013

• 论文 • 上一篇    下一篇

上行大规模天线系统能效分析

赵龙, 赵慧, 龙航, 郑侃, 王文博   

  1. 北京邮电大学 泛网无线通信教育部重点实验室, 北京 100876
  • 收稿日期:2013-04-02 出版日期:2013-12-31 发布日期:2013-10-08
  • 作者简介:赵摇龙(1985—),男,博士生,E-mail:z.long.gm@gmail.com;郑摇侃(1974—),男,教授,博士生导师.
  • 基金资助:

    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)

Energy Efficiency Analysis of Uplink Massive Antenna System

ZHAO Long, ZHAO Hui, LONG Hang, ZHENG Kan, WANG Wen-bo   

  1. Key Laboratory of Universal Wireless Communication (Beijing University of Posts and Telecommunications), Ministry of Education, Beijing 100876, China
  • Received:2013-04-02 Online:2013-12-31 Published:2013-10-08

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.

关键词: 大规模多输入多输出系统, 迫零, 能效, 谱效

Abstract:

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 system. When zero-forcing detector was adopted in the uplink massive multiple-input multiple-output system, the closed-form expression among energy efficiency, the spectrum efficiency, the number of receiving antennas and the cell radius were derived according to the realistic power consumption model. Further, the optimal energy efficiency, corresponding spectrum efficiency and power consumption were deduced based on the closed-form. It is shown that the setting up of rational spectrum efficiency, the deploying of more receiving antennas at the base stations and the shrinking of cell radius are three key measures to enhance the system energy efficiency.

Key words: massive multiple-input multiple-output system, zero-forcing, energy efficiency, spectrum efficiency

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