基于最小二乘算法的OFDM信道估计  

OFDM Channel Estimate Based on Least Square Algorithm

作　　者：黄波[1] 王琦[1] 徐强辉 

机构地区：[1]中国船舶重工集团公司第七二二研究所,武汉430250

出　　处：《舰船电子工程》2015年第6期51-53,72,共4页Ship Electronic Engineering

摘　　要：作为一种高效的传输技术,正交频分复用(OFDM)正被广泛地应用于下一代无线通信系统。论文采用一种OFDM系统中低复杂度的最小二乘(LS)信道估计算法,该算法采用在频域上插人梳状导频数据,通过仿真,证明了该算法在瑞利衰落多径信道中的优越性。同时,仿真也表明,当信道变化过快时,该算法的优越性将变得不再显著。OFDM （Orthogonal Frequency Division Multiplexing） is being widely used in the next generation of wireless communication systems as an efficient transmission technology .In this paper ,a low complexity LS （least squares） channel estimation algorithm which inserting comb pilot data in the frequency domain is proposed in OFDM system .Simulation re‐sults prove the superiority of the algorithm in Rayleigh multipath fading channel .Meanwhile ,the simulation results also show that the superiority of this algorithm will become no longer significant when the channel changes too fast .

关 键 词：正交频分复用技术 最小二乘 信道估计 

分 类 号：TN929.531[电子电信—通信与信息系统]