高速环境下OFDM系统降低小区间干扰的导频设计方案

A Pilot Sequence Design Scheme for Inter-Cell Interference Mitigation in OFDM Systems under Time-Varying Channels

针对多小区环境OFDM系统中,小区边缘高速移动的移动台受干扰的问题,提出了一种有效的导频设计方案,该方案可以对子载波干扰和小区间干扰加以抑制,并对相应的设计方案做了比较和仿真说明.

In a fully-loaded orthogonal frequency division multiplexing （OFDM） cellular environment with a frequency reuse factor equal to 1, any users moving at the cell boundary at a high speed will suffer both an inter-carrier interference caused by the time varying （TV） channels and an inter-cell interference. The scheme of pilot design in the downlink at the cell boundary is addressed, aiming at mitigating the two interferences mentioned above. The properties of the pilots are described, and the simulation results are presented.