Research Article
Random Access Preamble Sequence Design in High-Speed Scenario
@INPROCEEDINGS{10.1007/978-3-031-34790-0_6, author={Ziyuan Qiu and Sen Wang and Qixing Wang and Wenxi He and Hang Long}, title={Random Access Preamble Sequence Design in High-Speed Scenario}, proceedings={Communications and Networking. 17th EAI International Conference, Chinacom 2022, Virtual Event, November 19-20, 2022, Proceedings}, proceedings_a={CHINACOM}, year={2023}, month={6}, keywords={Random access Doppler shift OTFS}, doi={10.1007/978-3-031-34790-0_6} }- Ziyuan Qiu
Sen Wang
Qixing Wang
Wenxi He
Hang Long
Year: 2023
Random Access Preamble Sequence Design in High-Speed Scenario
CHINACOM
Springer
DOI: 10.1007/978-3-031-34790-0_6
Abstract
Random access preamble sequences are sent from the user equipment (UE) to gNodeB though Physical Random Access Channel to access to the network. In high-speed scenarios, the performance of random access based on Zadoff-Chu sequences degrades due to the Doppler frequency offset which breaks the sub-carrier orthogonality. In this paper, a random access preamble sequence with linear change in phase is proposed based on the analysis of the influence of frequency offset on the correlation results of random access preamble sequence. The method of decreasing the peak-to-average power ratio of time domain sequence and the random access preamble sequence design compatible with orthogonal time-frequency space technology are proposed. The false detection rate and the timing error distribution are evaluated. The simulation results show that the proposed designs of random access preamble sequence are insensitive to frequency offset, and the detection performance and timing performance are almost unaffected by frequency offset.
