MIMO-OFDM系统中LS时域信道估计的一种简化改进算法

摘要

研究基于多输入多输出正交频分复用(MIMO-OFDM)系统中的信道估计算法.主要工作在训练序列最小均方(LS)准则信道估计算法的研究上,在以LS时域信道估计基本算法为前提下,提出了一种改进的LS时域信道估计算法及固定长度的时域截取算法,此算法可以大大降低计算的复杂度,结合MATLAB仿真对此改进算法的有效性和可行性进行了分析,得出了比较理想的仿真结果.%This paper researches the channel estimation algorithm based on Multi - input Multi - output & Orthogonal Frequency Division Multiplexing (MIMO-OFDM) system. It is mainly working on the research of channel estimation algorithm based on training sequence Least Square (LS) criterion. Under the premise of the LS time domain channel estimation basic algorithm, it proposes an improved LS time domain channel estimation algorithm and the time domain intercepting algorithm with fixed-length. This algorithm can lower the complexity of calculation. The validity and feasibility of the improved algorithm are analyzed using MATLAB simulation, and a better ideal simulation result is obtained.