MIMO-OFDM最优导频设置与优化的信道估计方法

从系统设计的角度，根据最小化MSE原则，推导出一种基于MIMO—OFDM多发射天线优化的导频值插入方法，并提出一种健壮性的FDTC的信道估计处理方法。与已有的导频交替传输方法相比，这种优化的导频值能均布于各发射天线所有发射时段，尤其在时变信道中，具有更小的估计误差；在信道估计方法中，提出的频域分集时域合并的方法，通过仿真，表明这种方法能够更进一步的提高估计的精度，同时具有较好的健壮性和较低的计算复杂度。

Optimal pilots and channel estimation in MIMO-OFDM system

Channel estimation is the key technology in MIMO-OFDM system design. In this paper, we deduce a optimal pilots in the transmitter diversity based on the system design, and propose a novel robust FDTC channel estimation algorithm. Compared with the existing alternative transmitting pilot methods, the proposed pilots algorithm can be scattered in all the pilot subcarriers. Especially in mobile channels, the proposed algorithm shows lower MSE. And FDTC algorithm can farther improve the performance, and have better robust and lower calculating complexity.