山东大学学报 (工学版) ›› 2019, Vol. 49 ›› Issue (4): 130-136.doi: 10.6040/j.issn.1672-3961.0.2018.175
• 电气工程 • 上一篇
Na LU1(),Li GAO1,Xuanfan SHEN2
摘要:
针对高速移动场景中由于信道存在时频域选择性衰落(双选衰落)导致正交频分复用(orthogonal frequency division multiplexing, OFDM)通信系统受到子载波间干扰而使通信质量下降的问题,采用基扩展信道模型,在消除子载波间干扰(inter carrier interference, ICI)影响的同时节约信道估计算法的空间复杂度。针对基扩展模型(basis expansion model, BEM)下的非线性信道状态空间模型,采用无迹卡尔曼滤波(unscented Kalman filter, UKF)方法进一步跟踪信道响应提升信道估计精度。仿真分析表明,本研究所提方法能够有效提升信道估计的精度,相对于传统算法具有更好的误码率性能和鲁棒性。
中图分类号:
1 |
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