2020/03/01 by Xiang Ren, Wen Chen, Ren, Xiang +7
Computer Science · Engineering · #Advanced MIMO Systems Optimization #Advanced Wireless Communication Techniques #FOS: Electrical engineering #Signal Processing (eess.SP) #Wireless Communication Networks Research #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2003.02698
openalex publication_date 2020/03/01 · openalex created_date 2020/03/13 · openalex updated_date 2026/07/28
Orthogonal frequency-division multiplexing (OFD-M) and multi-cell\narchitecture are widely adopted in current high speed train (HST) systems for\nproviding high data rate wireless communications. In this paper, a typical\nmulti-antenna OFDM HST communication system with multi-cell architecture is\nconsidered, where the inter-carrier interference (ICI) caused by high mobility\nand multi-cell interference (MCI) are both taken into consideration. By\nexploiting the train position information, a new position-based interference\nelimination method is proposed to eliminate both the MCI and ICI for a general\nbasis expansion model (BEM). We show that the MCI and ICI can be completely\neliminated by the proposed method to get the ICI-free pilots at each receive\nantenna. In addition, for the considered multi-cell HST system, we develop a\nlow-complexity compressed channel estimation method and consider the optimal\npilot pattern design. Both the proposed interference elimination method and the\noptimal pilot pattern are robust to the train speed and position,as well as the\nmulti-cell multi-antenna system. Simulation results demonstrate the benefits\nand robustness of the proposed method in the multi-cell HST system.\n