Research Article
Research on the Interference and Coexistence of CBTC in 1.8 GHz Band
@INPROCEEDINGS{10.1007/978-3-319-72823-0_44, author={Ruichen Xu and Xiao Peng and Xiaobo Wang and Ji Fang and Bo Yuan}, title={Research on the Interference and Coexistence of CBTC in 1.8 GHz Band}, proceedings={5G for Future Wireless Networks. First International Conference, 5GWN 2017, Beijing, China, April 21-23, 2017, Proceedings}, proceedings_a={5GWN}, year={2018}, month={1}, keywords={1.8 GHz TDD-LTE CBTC Interference Isolation distance}, doi={10.1007/978-3-319-72823-0_44} }- Ruichen Xu
Xiao Peng
Xiaobo Wang
Ji Fang
Bo Yuan
Year: 2018
Research on the Interference and Coexistence of CBTC in 1.8 GHz Band
5GWN
Springer
DOI: 10.1007/978-3-319-72823-0_44
Abstract
The current Communication Based Train Control (CBTC) system is assigned to 2.4 GHz unlicensed band, which can be easily interfered. To enhance safety, the state radio regulatory commission assigned 1785 MHz–1805 MHz band to CBTC system. However, under the interference of first use telecommunication system in identical and adjacent frequency, it’s a problem to guarantee the safety isolation distance between interfere and interfered party, so that to improve CBTC system safety. To solve this problem, this paper firstly analyzes relative domestic frequency assignment situation to determine interfere party, and then finds out study scenario based on field testing data. Afterward, obtain isolation distance between interfere and interfered party by ACIR modeling and deterministic calculations. Based on the research above, the advice that CBTC system should be assigned in 1790 MHz–1800 MHz band is given.