摘要
Based on the analysis of the impact of Doppler shift to the railway dedicated mobile communication quality under the condition of high-speed mobility,this paper presents a Doppler shift measurement approach based on the phase estimation of frequency correction channel(FCCH) which correctly reflects the time-varying characteristic of the channel with a testing system developed.The Doppler shift data under the high-speed condition is collected,processed,analyzed,and compared with the simulation results.The scientific laws of the Doppler shift distribution of radio channel under high-speed condition are obtained.These data and analysis are essential for the establishment of high-speed railway Doppler power spectrum model and the development of the key technology of antiDoppler shift.
Based on the analysis of the impact of Doppler shift to the railway dedicated mobile communica tion quality under the condition of highspeed mobility, this paper presents a Doppler shift measure ment approach based on the phase estimation of frequency correction channel （FCCH） which cor rectly reflects the timevarying characteristic of the channel with a testing system developed. The Doppler shift data under the highspeed condition is collected, processed, analyzed, and compared with the simulation results. The scientific laws of the Doppler shift distribution of radio channel un der highspeed condition are obtained. These data and analysis are essential for the establishment of highspeed railway Doppler power spectrum model and the development of the key technology of anti Doppler shift.
基金
Supported by the National Natural Science Foundation of China(No.U1334202
61222105)
the Key Grant Project of Chinese Ministry of Education(No.313006)
the Project of State Key Lab of Rail Traffic Control and Safety(No.RCS 2014ZT11)
