摘要
针对传统的LMS算法收敛速度慢和对时变信道跟踪能力弱的缺点做了改进,提出一种应用于LTE-A(Long Term Evolution-Advanced)系统的变步长LMS(least mean square)信道估计算法,设计一种误差函数来控制步长因子,仿真结果表明比传统算法能明显降低MSE(Mean Squared Error,均方误差),提高信道估计的精度。
Made improvements on traditional LMS algorithm convergence speed slow and time-var-ying channel tracking weak shortcomings, Proposed a applied LTE-A （ Long Term Evolution-Ad-vanced） systems variable step size LMS （ least mean square） channel estimation algorithm, By de-signing an error function by controlling the step factor. Simulation results show that the algorithm can significantly reduce over traditional MSE（ Mean Squared Error） and improve the accuracy of channel estimation.
出处
《广西大学学报（自然科学版）》
CAS
北大核心
2014年第6期1352-1356,共5页
Journal of Guangxi University（Natural Science Edition）
基金
国家科技重大专项资助项目(2012ZX03001012-002)
关键词
LTE—A
信道估计
变步长
LMS
LTE-A
LMS
LTE-A
channel estimation
variable step size
LMS
