Impact of Doppler shift error on least‐squares MIMO channel estimation for high‐speed railway

Zakia, Irma; Kurniawan, Adit; Iskandar, Iskandar

doi:10.1049/iet-com.2018.6259

Cited by 6 publications

(2 citation statements)

References 31 publications

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“…In addition, it can be seen from Table 4 that with the increase of train speed, the handover success rate of diferent handover scenarios shows a downward trend. Tis is because with the increase of the train speed, the wireless channel is gradually increased by Doppler frequency shift, leading to the decline of its handover success rate [28]. Based on the abovementioned handover success rate experiments, we can fnd that the handover success rate obtained by this method is higher than 99.5%, which can meet the requirements of a high-speed railway handover success rate, thus further verifying the efectiveness of this method.…”

Section: Solving the Comprehensive Utility Value Of Handovermentioning

confidence: 56%

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Research on Adaptive Handover Decision Algorithm in Next-Generation High-Speed Railway Scenario

Chen

Kang

Niu

2022

Mobile Information Systems

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For the 5G-R wireless communication system of the next-generation high-speed railway, there is a problem of single algorithm consideration when handover is carried out. In high-speed environment, it is easily affected by handover risk, which leads to the problem of low handover success. To solve the above problems, this study proposed a next-generation high-speed railway handover decision algorithm, which is based on improved Criteria Importance through Intercrieria Correlation and Technology for Order Preference by Similarity to an Ideal Solution (CRITIC-TOPSIS) theory. Firstly, considering the factors of reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), and co-frequency interference, an improved CRITIC-TOPSIS multi-attribute joint handover decision method is proposed, which overcomes the problem of single consideration of handover. Then, a handover risk assessment model based on prospect theory is constructed, and the handover risks of trains triggered at different positions are analyzed. Finally, the comprehensive utility value of train handover is obtained by normalization, and the optimal handover position is recommended according to the comprehensive utility value, so as to complete the handover. The experimental results show that the success rate of train handover exceeds 99.5% in viaduct, urban area, open area, and mountainous area. In addition, under different operation scenarios, when the train runs at a speed of 200 km/h to 500 km/h, the handover success rate can be between 99.51% and 99.68%. The proposed method can meet the requirement that the success rate of quality of service (QoS) of 5G-R wireless communication system is greater than 99.5%. The research results provide a theoretical reference for the evolution of the next-generation 5G-R high-speed railway system.

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Section: Solving the Comprehensive Utility Value Of Handovermentioning

confidence: 56%

“…From Table 3, it can be found that the handover success rate is higher than 99.5% in the relatively optimal handover location interval recommended by this method. It can meet the requirement that the handover success rate of high-speed railway wireless communication system is greater than 99.5% [28].…”

Section: Solving the Comprehensive Utility Value Of Handovermentioning

confidence: 99%