论文标题
基于位置的干扰消除多电池系统中高迁移率的高迁移率估计
Position-Based Interference Elimination for High Mobility OFDM Channel Estimation in Multi-cell Systems
论文作者
论文摘要
正交频划分多路复用（OFD-M）和多细胞体系结构在当前的高速列车（HST）系统中广泛采用，用于提供高数据速率无线通信。在本文中，考虑了具有多细胞体系结构的典型的多型HST HST通信系统，其中考虑了高迁移率和多细胞干扰（MCI）引起的携带者间干扰（ICI）。通过利用火车位置信息，提出了一种新的基于位置的干扰方法，以消除MCI和ICI作为一般基础扩展模型（BEM）。我们表明，可以通过提出的方法完全消除MCI和ICI，以使每个接收天线的无ICI飞行员获取无ICI飞行员。此外，对于所考虑的多细胞HST系统，我们开发了一种低复杂性压缩通道估计方法，并考虑最佳的试点模式设计。所提出的干扰消除方法和最佳试点模式都可以鲁棒，以及多细胞的多端antenna系统。仿真结果证明了多细胞HST系统中提出的方法的好处和鲁棒性。
Orthogonal frequency-division multiplexing (OFD-M) and multi-cell architecture are widely adopted in current high speed train (HST) systems for providing high data rate wireless communications. In this paper, a typical multi-antenna OFDM HST communication system with multi-cell architecture is considered, where the inter-carrier interference (ICI) caused by high mobility and multi-cell interference (MCI) are both taken into consideration. By exploiting the train position information, a new position-based interference elimination method is proposed to eliminate both the MCI and ICI for a general basis expansion model (BEM). We show that the MCI and ICI can be completely eliminated by the proposed method to get the ICI-free pilots at each receive antenna. In addition, for the considered multi-cell HST system, we develop a low-complexity compressed channel estimation method and consider the optimal pilot pattern design. Both the proposed interference elimination method and the optimal pilot pattern are robust to the train speed and position,as well as the multi-cell multi-antenna system. Simulation results demonstrate the benefits and robustness of the proposed method in the multi-cell HST system.
