1.8 GHz频段TD-LTE系统与异系统间干扰共存分析  

ANALYSIS OF INTERFERENCE COEXISTENCE BETWEEN TD-LTE SYSTEM AND OTHER SYSTEMS IN 1.8 GHz BAND

作　　者：许富馨 严天峰[1,2,3] Xu Fuxin;Yan Tianfeng(School of Electronic and Information Engineering,Lanzhou Jiaotong University,Lanzhou 730070,Gansu,China;Gansu High-precision Beidou Positioning Technology Engineering Laboratory,Lanzhou 730070,Gansu,China;Radio Monitoring and Technology Center of Positioning Industry of Gansu Province,Lanzhou 730070,Gansu,China)

机构地区：[1]兰州交通大学电子与信息工程学院,甘肃兰州730070 [2]甘肃省高精度北斗定位技术工程实验室,甘肃兰州730070 [3]甘肃省无线电监测及定位行业技术中心,甘肃兰州730070

出　　处：《计算机应用与软件》2019年第11期134-139,228,共7页Computer Applications and Software

基　　金：甘肃省自然科学基金项目(1508RJZA071)

摘　　要：根据我国工业和信息化部发布的《关于重新发布1785-1805 MHz频段无线接入系统频率使用事宜的通知》要求,结合我国无线电频率使用现状,对1.8 GHz频段内TD-LTE系统与其他系统干扰共存的问题进行分析研究.查询协议得到相关参数后,通过确定性计算的分析方法得到TD-LTE系统与IMT系统、McWill系统及CBTC系统共存时所需的隔离度要求,并提出相应的规避干扰措施.通过蒙特卡洛仿真的分析方法对TD-LTE系统与LTE FDD系统进行分析并验证了采用小区间干扰协调技术和波束赋形技术对系统性能的改善.为电力、石油、城市轨道交通等行业专网的建设提供参考意见[1].According to the“Notice on Re-issuing the Frequency Use of Radio Access Systems in the 1785-1805 MHz Band”issued by the Ministry of Industry and Information Technology of the People s Republic of China,combined with the current situation of radio frequency use in China,we analyze the problem of interference coexistence between TD-LTE system and other systems in the 1.8 GHz band.After querying the protocol to get the relevant parameters,the isolation requirements of TD-LTE system,IMT system,McWiLL system and CBTC system were obtained through the analysis method of deterministic calculation,and the corresponding interference avoidance measures were proposed.The TD-LTE system and LTE FDD system were analyzed by Monte Carlo simulation,and we verified the improvement of system performance by using inter-cell interference coordination technology and beamforming technology.It provides reference for the construction of power,petroleum,urban rail transit and other industries.

关 键 词：1.8GHz频段 TD-LTE系统 干扰共存 隔离度 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术] TN929.5[电子电信—通信与信息系统]