高技术通讯2013，Vol.23Issue(7)：707-712,6.DOI:10.3772/j.issn.1002-0470.2013.07.007
移动WiMAX网络频谱效率和能量效率研究
Study on spectrum and energy efficiency for mobile WiMAX networks
摘要
Abstract
Based on the IEEE802.16e protocol,the method for approximate calculation of the signal to interference plus noise ratio (SINR) of a world wide interoperability for microwave access (WiMAX) cell in the case of multi-cell/ multi-user was deduced.By using the SINR,the spectrum efficiency and the energy efficiency of a central cell were calculated for a WiMAX 7-cell model.The relationships between the spectrum efficiency,the energy efficiency and the network parameters such as cell radius and transmitted power were analyzed to provide the theory basis for network energy consumption optimization.The simulation results show that the spectrum efficiency of the link is mainly affected by the distance between a user' s location and the base station (BS),and the transmitted power has little effect on it ; the spectrum efficiency of a cell is mainly affected by interference when its radius is small and by noise when the radius is large; the energy efficiency reaches a maximum value for a specific transmitted power; the energy efficiency grows with the transmission bandwidth increasing.The results can help to make decisions about cell radius or transmitted power so as to reduce the energy consumption of networks.关键词
移动全球微波互联接入(WiMAX)/多小区/多用户/频谱效率/能量效率Key words
mobile world wide interoperability for microwave access (WiMAX)/ multi-cell/ multi-users/spectrum efficiency/ energy efficiency引用本文复制引用
解志斌,杨维,许昌龙..移动WiMAX网络频谱效率和能量效率研究[J].高技术通讯,2013,23(7):707-712,6.基金项目
国家自然科学基金(51274018),国家科技支撑计划课题(2013BAK06B03)和东南大学移动通信国家重点实验室开放研究基金(2010D11)资助项目. （51274018）
