高速铁路场景中LTE系统干扰消除技术的研究*

摘要

高速铁路场景中列车高速移动，多普勒频移严重，导致LTE系统的无线链路性能很差，因此需要找到物理层降低干扰的方案。通过对小区间干扰消除以及小区间干扰协调技术方案进行研究，提出了干扰抑制合并（IRC）技术和准空白子帧（ABS）技术两种方案，并通过仿真验证了这两种方案对LTE系统无线链路性能的增强。%As Doppler frequency offset in high-speed railway scene results in poor wireless link performance for LTE system, this paper studies the technology scheme of the inter-cell interference elimination and coordination, and proposes a solution for interference rejection in the physical layer, with two technologies combination of Interference Rejection Combining (IRC) and Almost Blank Subframe (ABS). The simulation proves that the schemes mentioned before improves the radio link performance for LTE.