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LTE上行多用户SC-FDMA系统中增强信道估计方法

DOI: 10.13190/jbupt.201106.86.yanglh, PP. 86-90

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Abstract:

针对LTE(LongTermEvolution,长期演进)上行多用户单载波-频分多址(SC-FDMA)系统,提出了一种增强的信道估计方法。新算法针对每个用户的导频只占有部分频带的特点和子信道的时频相关性,将最小二乘(LS)算法估计的导频子信道系数进行排序处理,并构造出了一种新的减小噪声影响(降噪)的正交变换矩阵,提出了基于该矩阵的高精度信道估计算法。计算机仿真结果表明新算法的均方根误差(MSE)约为LS算法的十分之一。

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