With reasonable constraint and the assistant of special-designed pilot sequence for each user, the discrete fourier transform (DFT)-based uplink channel estimation algorithm can achieve good estimation accuracy without sacrificing much system capacity.

• 在合理约束条件以及为每个用户特殊设计的导频序列辅助下，基于离散傅里叶变换(DFT)的上行信道估计算法能够获得较好的估计精度，同时无需牺牲过多的系统容量。