3.5 GHz频段IMT-2020系统对同频异系统干扰分析
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摘要
为保证IMT-2020系统在3.5GHz频段的研发和部署顺利进行,解决IMT-2020系统对该频段原有系统的干扰问题,本文将对IMT-2020系统与卫星固定业务系统的干扰进行分析,实现系统之间的共存。通过确定性计算的方法,得到卫星固定业务系统接收到IMT-2020系统的干扰功率与距离的关系,并通过卫星固定业务系统的干扰门限得到两系统间的隔离距离。仿真结果表明,两系统同频时,在城区环境下部署要至少保持47 km以上的距离,在郊区环境下部署要至少保持58 km以上的距离。
In order to ensure the smooth development of IMT-2020 system in at the 3.5GHz frequency band and solve the interference problem of the original system of IMT-2020 system in this frequency band, this paper analyzes the interference of IMT-2020 system and the same-frequency fixed-satellite service system to achieve the coexistence of these systems. Through the deterministic calculation method, the relationship between the interference power and the distance of IMT-2020 system received by the fixed-satellite service system is obtained, and the isolation distance between the two systems is obtained by the interference threshold of the fixed-satellite service system. Simulation results show that when the two systems are at the same frequency, the deployment in the urban environment should be at least 47km; in the suburban environment, the deployment should be at least 58 km.
In order to ensure the smooth development of IMT-2020 system in at the 3.5GHz frequency band and solve the interference problem of the original system of IMT-2020 system in this frequency band, this paper analyzes the interference of IMT-2020 system and the same-frequency fixed-satellite service system to achieve the coexistence of these systems. Through the deterministic calculation method, the relationship between the interference power and the distance of IMT-2020 system received by the fixed-satellite service system is obtained, and the isolation distance between the two systems is obtained by the interference threshold of the fixed-satellite service system. Simulation results show that when the two systems are at the same frequency, the deployment in the urban environment should be at least 47km; in the suburban environment, the deployment should be at least 58 km.
引文
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[4]Report ITU-R M.2292.Characteristics of terrestrial IMT-Advanced systems for frequency sharing/interference analyses[R].2013.
[5]RECOMMENDATION ITU-R M.2101.Modelling and simulation of IMT net-works and systems for use in sharing and compatibility studies[R].2017.
[6]RECOMMENDATION ITU-R S.465-6.Reference radiation pattern of earth station antennas in the fixedsatellite service for use in coordination and interference assessment in the frequency range from 2 to 31 GHz[R].2010.
[7]CCSA无线通信技术委员会WG8工作组.3400-3600MHz频段IMT室内覆盖系统与FSS系统兼容性研究报告[R].2013.
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[9]Shabbir N,Sadiq M T,Kashif H,et al.Comparison of radio propagation models for long term evolution(LTE)network[J].International Journal of Next-Generation Networks(IJNGN),2011,3(3):25-41.
[10]陈菊.天线极化失配的理论分析及应用[J].空间电子技术,1998(4):48-53.
[2]王丽.3400~3600MHz频段移动通信系统和卫星系统共存分析[J].电信网技术,2011(2):24-32.
[3]程粉红.卫星固定业务规划频段应用前景浅析[J].中国无线电,2014(7):32-33.
[4]Report ITU-R M.2292.Characteristics of terrestrial IMT-Advanced systems for frequency sharing/interference analyses[R].2013.
[5]RECOMMENDATION ITU-R M.2101.Modelling and simulation of IMT net-works and systems for use in sharing and compatibility studies[R].2017.
[6]RECOMMENDATION ITU-R S.465-6.Reference radiation pattern of earth station antennas in the fixedsatellite service for use in coordination and interference assessment in the frequency range from 2 to 31 GHz[R].2010.
[7]CCSA无线通信技术委员会WG8工作组.3400-3600MHz频段IMT室内覆盖系统与FSS系统兼容性研究报告[R].2013.
[8]赵明峰.LTE传播模型浅析[J].电信科学,2013(9):117-121.
[9]Shabbir N,Sadiq M T,Kashif H,et al.Comparison of radio propagation models for long term evolution(LTE)network[J].International Journal of Next-Generation Networks(IJNGN),2011,3(3):25-41.
[10]陈菊.天线极化失配的理论分析及应用[J].空间电子技术,1998(4):48-53.