Study of Interference Detection of Rail Transit Wireless Communication System Based on Fourth-Order Cyclic Cumulant
The wireless communication system is used to provide dispatching, control, communication and other services for rail transit operations. In practice, interference from other wireless communication systems will affect the normal operation of trains, so it is an urgent problem to study the interferenc...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/19/8291 |
| _version_ | 1797575149154729984 |
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| author | Peng Wang Junliang Yao Yong Pu Shuyuan Zhang Lu Wen |
| author_facet | Peng Wang Junliang Yao Yong Pu Shuyuan Zhang Lu Wen |
| author_sort | Peng Wang |
| collection | DOAJ |
| description | The wireless communication system is used to provide dispatching, control, communication and other services for rail transit operations. In practice, interference from other wireless communication systems will affect the normal operation of trains, so it is an urgent problem to study the interference detection algorithms for rail transit applications. In this paper, the fourth-order cyclic cumulant (FOCC) of signals with different modulation modes is analyzed for the narrow-band wireless communications system of rail transit. Based on the analysis results, an adjacent-frequency interference detection algorithm is proposed according to the FOCC of the received signal within the predetermined cyclic frequency range. To detect interference with the same carrier frequency, a same-frequency interference detection algorithm using the relationship between the FOCC and the received power is proposed. The performance of the proposed detection algorithms in terms of correct rate and computational complexity is analyzed and compared with the traditional second-order statistical methods. Simulation results show that when an interference signal coexists with the expected signal, the correct rates of the adjacent-frequency and the same-frequency interference detection algorithms are greater than 90% when the signal-to-noise ratio (SNR) is higher than 2 dB and −4 dB, respectively. Under the practical rail transit wireless channel with multipath propagation and the Doppler effect, the correct rates of the adjacent-frequency and the same-frequency interference detection algorithms are greater than 90% when the SNR is higher than 3 dB and 7 dB, respectively. Compared with the existing second-order statistical methods, the proposed method can detect both the adjacent-frequency and the same-frequency interference when the interference signals coexist with the expected signal. Although the computational complexity of the proposed method is increased, it is acceptable in the application of rail transit wireless communication interference detection. |
| first_indexed | 2024-03-10T21:34:35Z |
| format | Article |
| id | doaj.art-577f53908a6141b782b2ba7e2574eff8 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T21:34:35Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-577f53908a6141b782b2ba7e2574eff82023-11-19T15:05:28ZengMDPI AGSensors1424-82202023-10-012319829110.3390/s23198291Study of Interference Detection of Rail Transit Wireless Communication System Based on Fourth-Order Cyclic CumulantPeng Wang0Junliang Yao1Yong Pu2Shuyuan Zhang3Lu Wen4China Railway First Survey and Design Institute Group Co., Ltd., Xi’an 710043, ChinaSchool of Automation and Information Engineering, Xi’an University of Technology, Xi’an 710048, ChinaSchool of Automation and Information Engineering, Xi’an University of Technology, Xi’an 710048, ChinaSchool of Automation and Information Engineering, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory of Rail Transit Engineering Informatization (FSDI), Xi’an 710043, ChinaThe wireless communication system is used to provide dispatching, control, communication and other services for rail transit operations. In practice, interference from other wireless communication systems will affect the normal operation of trains, so it is an urgent problem to study the interference detection algorithms for rail transit applications. In this paper, the fourth-order cyclic cumulant (FOCC) of signals with different modulation modes is analyzed for the narrow-band wireless communications system of rail transit. Based on the analysis results, an adjacent-frequency interference detection algorithm is proposed according to the FOCC of the received signal within the predetermined cyclic frequency range. To detect interference with the same carrier frequency, a same-frequency interference detection algorithm using the relationship between the FOCC and the received power is proposed. The performance of the proposed detection algorithms in terms of correct rate and computational complexity is analyzed and compared with the traditional second-order statistical methods. Simulation results show that when an interference signal coexists with the expected signal, the correct rates of the adjacent-frequency and the same-frequency interference detection algorithms are greater than 90% when the signal-to-noise ratio (SNR) is higher than 2 dB and −4 dB, respectively. Under the practical rail transit wireless channel with multipath propagation and the Doppler effect, the correct rates of the adjacent-frequency and the same-frequency interference detection algorithms are greater than 90% when the SNR is higher than 3 dB and 7 dB, respectively. Compared with the existing second-order statistical methods, the proposed method can detect both the adjacent-frequency and the same-frequency interference when the interference signals coexist with the expected signal. Although the computational complexity of the proposed method is increased, it is acceptable in the application of rail transit wireless communication interference detection.https://www.mdpi.com/1424-8220/23/19/8291rail transit wireless communicationsinterference detectioncyclic cumulantmultipath propagationDoppler effect |
| spellingShingle | Peng Wang Junliang Yao Yong Pu Shuyuan Zhang Lu Wen Study of Interference Detection of Rail Transit Wireless Communication System Based on Fourth-Order Cyclic Cumulant Sensors rail transit wireless communications interference detection cyclic cumulant multipath propagation Doppler effect |
| title | Study of Interference Detection of Rail Transit Wireless Communication System Based on Fourth-Order Cyclic Cumulant |
| title_full | Study of Interference Detection of Rail Transit Wireless Communication System Based on Fourth-Order Cyclic Cumulant |
| title_fullStr | Study of Interference Detection of Rail Transit Wireless Communication System Based on Fourth-Order Cyclic Cumulant |
| title_full_unstemmed | Study of Interference Detection of Rail Transit Wireless Communication System Based on Fourth-Order Cyclic Cumulant |
| title_short | Study of Interference Detection of Rail Transit Wireless Communication System Based on Fourth-Order Cyclic Cumulant |
| title_sort | study of interference detection of rail transit wireless communication system based on fourth order cyclic cumulant |
| topic | rail transit wireless communications interference detection cyclic cumulant multipath propagation Doppler effect |
| url | https://www.mdpi.com/1424-8220/23/19/8291 |
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