摘要
在TD-LTE系统中,由于高速移动产生多普勒频偏,使传统的基于DFT插值信道估计算法性能损失严重。为了解决上述问题,提出一种利用TD-LTE系统导频模式的二维离散余弦变换(2D-DCT)信道估计算法,并给出了详细的推导。仿真结果表明,该方法的性能优于2D-DFT算法,可以很好地接近2D维纳滤波估计算法。
In TD-LTE system, the high-speed mobile Doppler shift leads to a serious loss in the DFF-based interpolation channel estimation algorithm performance. In order to solve these problems, a two-dimensional discrete cosine transform channel estimation algorithm for TD-LTE system pilot model is proposed in this paper, and a detailed derivation is given. Simulation results show that the performance of the method is superior to the 2D-DFF algo- rithm, and can approach the performance of 2D Wiener filter estimation algorithm.
出处
《电视技术》
北大核心
2013年第3期125-128,共4页
Video Engineering
