MIMO-OFDM系统导频辅助的信道估计  

Pilot-symbol-aided channel estimation for MIMO-OFDM system

作　　者：刘淼[1] 胡臻[1] 

机构地区：[1]东南大学无线电系信息与信号处理实验室,南京210096

出　　处：《信息技术》2006年第10期59-64,共6页Information Technology

摘　　要：以MIMO-OFDM系统为研究对象,通过设计正交导频进行导频辅助信道估计,对数据点的信道响应进行线性内插、三次样条插值和二次曲线拟合算法,并通过Matlab进行计算机仿真,对这些算法的BER性能进行比较。结果表明:随着信噪比(SNR)的增加,三次样条(Spline)内插和线性内插性能要远好于二次曲线拟合导频估计方法。This paper investigated pilot - symbol - aided channel estimation for MIMO - OFDM systems. The channel estimation based on comb type pilot arrangement is studied through different algorithms such as linear interpolation, spline interpolation and polyfit method. It also compared the performances of all schemes through measuring bit error rate by computer simulation using Matlab software. Simulation result proves that the performances of linear interpolation and spline interpolation are much better than that polyfit method along with signal - noise ratio increasing.

关 键 词：MIMO OFDM 导频辅助 信道估计 

分 类 号：TN911[电子电信—通信与信息系统]