摘要
研究了OFDM系统中基于梳状导频的空时信道估计方法,并提出了一种新的信道估计算法,即实现了空时二维信道估计。基于梳状导频的空时信道估计的算法分为两步:第一步是利用导频信号对导频位置的信道进行估计;第二步是信道插值,得到所有频域位置的信道信息。基于LS准则的信号估计以及基于线性插值的信道插值,笔者进行了详细研究。
The channel estimation methods for OFDM systems based on comb - type pilot sub - carrier arrangement are investigated, and a new method for estimating channel transfer function is proposed to estimate the channel transfer function from time and space. The channel estimation algorithm based on comb - type pilots is divided into pilot signal estimation and channel interpolation. The pilot signal estimation based on LS together with channel interpolation based on linear interpolation is studied.
出处
《武汉理工大学学报(信息与管理工程版)》
CAS
2006年第11期20-23,共4页
Journal of Wuhan University of Technology:Information & Management Engineering
基金
湖北省自然科学基金资助项目(2005ABA224)
关键词
OFDM
梳状导频
空时
信道估计
OFDM
comb - type pilot
space - time
channel estimation
作者简介
万琦(1981-),男,湖北孝感人,武汉理工大学信息工程学院硕士研究生.