GSM系统对GSM-R系统的互调干扰分析

研究目的:通过分析公网GSM系统和铁路GSM-R系统的频点及可能产生的二阶及三阶互调干扰,用计算机仿真找到可能对铁路GSM-R频率产生干扰的频点组合,给铁路沿线公网GSM系统的频率规划提出建议。研究结论:(1)铁路沿线的公网GSM系统对铁路GSM-R系统产生互调干扰的概率很高;(2)在铁路沿线的公网GSM系统需根据GSM-R系统所使用的频率进行频率规划,以避免对GSM-R系统造成干扰,影响铁路安全运行;(3)运营商在对铁路沿线已建成的GSM网络进行频点调整优化时,需要了解铁路GSM-R使用的频点,再进行优化,避免对GSM-R系统造成干扰。

Analysis of Intermodulation Interferences of GSM System on GSM - R System

Research purposes:Though the analysis of the frequencies and the possible second-order and third-orderintermodulation interferences of the public GSM system and GSM-R system,the computer simulation is made to findout the interferences combinations for putting forward the advices on the frequency planning of the public GSM systemalong the railway.Research conclusions:(1)The possibility of the intermodulation interferences of the public GSM system on the GSM-R system is high.(2)The frequency planning of public GSM system alone railway shall be planned according to the usedfrequency of GSM-R system,so that the GSM-R system will not interfered by GSM system and safety of railwayoperation can be ensured.(3)When the business enterprise adjusts and optimizes the GSM-R network being along therailway,it is necessary to know the frequency points for GSM-R for optimizing to avoid the interference on the GSM-R system.