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文章在子空间的盲信道估计的基础上,针对盲估计算法的计算量大及收敛速度慢等缺点,充分利用子空间跟踪算法的有效性和快速性,给出了一种基于子空间跟踪技术的MIMO-OFDM盲信道估计算法。仿真结果表明,该算法与传统盲估计相比,降低了计算量,提高了收敛速度。
On the basis of blind channel estimation in subspace, aiming at the disadvantages of large computation and slow convergence of blind estimation algorithm, this paper makes full use of the effectiveness and rapidity of subspace tracking algorithm, and gives a new algorithm based on subspace tracking MIMO-OFDM blind channel estimation algorithm. The simulation results show that compared with the traditional blind estimation, the proposed algorithm reduces the computational complexity and improves the convergence speed.