基于MIMO环境的绿色通信关键技术研究.pdf

华中科技大学
硕士学位论文
基于MIMO环境的绿色通信关键技术研究
姓名:曹程倩
申请学位级别:硕士
专业:通信与信息系统
指导教师:葛晓虎;李自力
2011-02-23
华中科技大学硕士学位论文

摘要
目前,移动通信行业发展迅速:一方面,多输入多输出(MIMO: Multiple Input
Multiple Output)技术备受重视;另一方面,能源消耗和环境压力增长,带来了一个
新的理念—“绿色通信”。本论文的主要工作即是对移动通信系统中的能量效率问题
展开研究。研究内容主要包括:
提出了一个新的能量效率模型,并在四种不同的通信场景下进行了能量效率分
析,使用数学解析,优化模型分析以及数值仿真方法,比较了能量效率和频谱效率变
化规律,研究了各个系统参数(发送功率,路径增益等)对能量效率的影响并初步分
析了其形成原因。
基于通信系统吞吐率提出了一种新的能量效率评估模型,并结合一个具有无穷干
扰源的 MISO 协作通信系统,用蒙特卡洛仿真方法进行了数值仿真分析,分析了干扰
基站密度,协作通信等因素对所提出的能量效率模型的影响。
针对单小区 MIMO-OFDM 系统,以优化系统能量效率为目的,提出了一种新的
功率控制算法 PCEE(Power Control basing on Energy Efficiency algorithm)。仿真结果
表明,通过干扰抑制,协作通信以及信道复用等手段能够有效提高系统的能量效率;
另外,该算法与传统算法相比,在显著提高系统的能量效率的同时,能同时提高系统
的频谱效率。

关键词:绿色通信, 技术,能量效率模型,功率控制。






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华中科技大学硕士学位论文

Abstract
Currently, the munication industry is developed rapidly. On the one hand,
multi-input Multiple-output (MIMO) technology has been attracted more attention. On the
other hand, the increased energy consumption and the environmental stress have brought a
new concept -"munications". This concept focuses on the research of energy
efficiency problems on munication systems. Following issues are discussed:
A new model for energy efficiency of munication systems is proposed.
Considering four munication scenarios, the performance analysis of energy
efficiency and spectral efficiency in munication systems pared based on
optimization modeling and numerical simulations approaches. Moreover, the impacts of
munication parameters (such as transmission power, path gain, etc.) on the
energy efficiency of munication systems are studied and the initial analysis is
simulated.
Furthermore, based on work throughput, a new energy efficiency model is
proposed. Considering a cooperative munication system with an infinite
interferers, the impact of the interfering base stations (BSs) density, collaboration
communication and other channels factors on the energy efficiency of M