基于三次Hermite插值的OFDM信道估计  

Channel Estimation for OFDM based on Cubic Hermite Interpolation

作　　者：曹敦[1] 杜宏伟[1] 傅明[1] 

机构地区：[1]长沙理工大学计算机与通信工程学院,湖南长沙410076

出　　处：《通信技术》2010年第11期35-36,54,共3页Communications Technology

基　　金：湖南省科技计划项目(No.2009SK4006);湖南省教育厅基金(No.08c102)

摘　　要：主要研究基于导频的正交频分复用(OFDM)信道估计的插值方法,提出三次Hermite插值信道估计算法,目的是利用该插值算法在不同信噪比的环境下,缩短运算时间和降低误码率(BER)。通过Matlab仿真实验说明,该算法相对于传统的信道估计算法具有较良好的性能。相对于改进的二项插值,具有较低的BER,相对于三次样条插值算法,具有运算时间较短、大信噪比环境下BER较低的优点。This paper mainly discusses the orthogonal frequency division multiplexing（OFDM）based on pilot,and proposes the cubic hermite interpolation based on pilot channel estimation interpolation method,thus to reduce the operation time and the bit error rate under different SNR environments.The simulation with Matlab indicates that the algorithm is of fairly good performance as compared with the traditional channel estimation algorithm,and relatively to the improved binomial interpolation,is lower in BER,while to the cubic spline interpolation algorithm,has the advantages of shorter operation time and lower bit error rate under large SNR.

关 键 词：OFDM 导频 插值 BER 

分 类 号：TN911.23[电子电信—通信与信息系统]