摘要
提出了一种低复杂度的最小线性均方误差(LMMSE)估计算法,该算法依据重叠和非重叠技术将相关矩阵进行分块。由于该算法采用小的子矩阵而不是整个相关矩阵,尽管性能稍微恶化但复杂度大大降低。以指数衰落信道模型为例,评价了该算法的均方误差性能,证实了该算法的有效性。
A low complexity Linear Minimum Mean Square Error(LMMSE) channel estimation algorithm is pro- posed. In this algorithm, the channel autocorrelation matrix is partitioned into small sub - matrices by using non - overlap and overlap techniques. Since the proposed estimator uses small sub - matrices instead of the whole channel auto - correlation matrix, the complexity is significantly reduced in spite of slight performance degrada- tion. The performance of Mean Square Error (MSE) is evaluated in an exponentially fading channel model through computer simulation and the effectiveness of the orooosed aleorithm is verified.
出处
《电讯技术》
北大核心
2012年第4期478-482,共5页
Telecommunication Engineering