【摘要】 针对多输入多输出正交频分复用系统,提出了一种利用空频分组码码字正交特性的导频设计方法和基于该导频的低复杂度信道估计算法.推导了该信道估计方案的均方误差,评估了复杂度计算公式.对信道估计方案在多种移动速度下的均方误差和误码率性能进行仿真,将仿真结果与理论的均方差性能以及最小均方差信道估计算法的性能进行了比较.更多还原

【Abstract】 Orthogonal frequency-division multiplexing(OFDM) combined with multiple-input multiple-output(MIMO) is an efficient technique to improve wireless communication performance and capacity.To improve the performance of MIMO-OFDM system,a novel pilot sequence taking advantage of the orthogonality of space frequency block code(SFBC) as well as the corresponding simple channel estimation algorithm,is presented in this paper.The theoretic mean square error(MSE) of the algorithm is deduced and the complexity is also given.The performance of the proposed scheme is verified by simulations.更多还原