| 摘要: |
| 针对移动信号室内深度覆盖需求和现有覆盖方案存在的问题，提出了一种以有线电视同轴电缆为入户通道的射频系统。分析了系统原理和几个关键问题，计算了系统各项设计参数，阐述了合路器、跨路器和智能终端三个主要部分的结构及阻抗匹配滤波、同步、放大等关键模块的实现方法。实地测试结果表明，系统各项指标符合设计和应用要求，实现了160 m2高层住宅的信号覆盖，提高了小区测量报告（MR）覆盖率，同时对移动室分系统性能也无影响。所提方案与现有方案相比具有低成本、施工快速、协调简单等优势，是一种新颖实用的室内深度覆盖实现方式。 |
| 关键词: 移动信号 室内深度覆盖 有线电视 同轴电缆 射频系统 智能终端 |
| DOI： |
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| 基金项目: |
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| Design and implementation of a mobile signal indoor depth coverage system based on coaxial cable |
| SHAO Ke,DING Runjie,DANG Wusong,WANG Zhanbin,LI Qi |
| (The Third Research Institute of Ministry of Public Security,Shanghai 201204,China) |
| Abstract: |
| According to the requirements of mobile signal indoor depth coverage and the limitation of existing coverage solutions,a radio frequency system based on community antenna television(CATV) coaxial cable is proposed.The system principle and several key problems are analyzed,and parameters of the system design are calculated.Then,the structure of three main components—combiner,distributor and intelligent terminal and key modules such as impedance matching filter,synchronization,and amplifier are described.The field test results show that the proposed system meets the requirements of design and application,realizes the signal coverage of a 160 m2 apartment,improves the cell measure report(MR) coverage,meanwhile has no influence on the performance of indoor distribution system.It has the advantages of low cost,fast construction and simple coordination compared with the existing solutions and it is a novel and practical way to realize indoor depth coverage. |
| Key words: mobile signal indoor depth coverage community antenna television(CATV) coaxial cable radio frequency system intelligent terminal |
