不同极化漏缆组网方案在地铁隧道中的应用  

Application of different polarization leaky cable networking schemes in subway tunnel

作　　者：费成图 FEI Chengtu(Mobile Communication Planning and Design Institute,Anhui Telecom Planning&Design Co.,Ltd.,Hefei 230031,China)

机构地区：[1]安徽电信规划设计有限责任公司移动通信规划设计院,合肥230031

出　　处：《计算机应用文摘》2024年第14期83-85,共3页Chinese Journal of Computer Application

摘　　要：地铁是城市中修建的一种城市轨道交通线路制式,具有快速、大运量、用电力牵引的特点。截至2023年9月30日,我国内地共有58个城市投运城轨交通线路,总长度达到10841.59 km。目前,在地铁隧道内,1-1/4"漏泄同轴电缆是常用的无线信号覆盖方式。随着网络发展,运营商频谱划分增加了14个频段,以支持MIMO技术并提升传输速率。隧道内多根漏缆的敷设方式由原来的2根同极化漏缆升级为4根,但漏缆位置的限制和频段的增多带来了频段间的干扰问题。优化不同极化漏缆的布置方案可以有效提高隧道内的信号覆盖质量。The subway is a type of urban rail transit system built in cities,which is a fast,high-capacity,and electrically driven rail transit.As of September 30,2023,a total of 58 cities in China's Mainland have put urban rail transit lines into operation,with a total length of 10841.59 km.At present,1-1/4"leaky coaxial cables are a commonly used wireless signal coverage method in subway tunnels.With the development of the network,operators have added 14 frequency bands for spectrum division to support MIMO technology to improve transmission rates.The laying method of multiple leaky cables in the tunnel has been upgraded from 2 to 4,but the limitation of the location of the leaky cables and the increase in frequency bands have also brought about interference problems between frequency bands.Optimizing the layout of different polarization leaky cables can effectively improve the quality of signal coverage in the tunnel.

关 键 词：地铁隧道 1-1/4"新型5G漏缆 不同极化漏缆布置方案 

分 类 号：TN929[电子电信—通信与信息系统]