基于OFDM的宽带短波波形信道估计算法研究  

Research on the Method of Channel Estimation in the Orthogonal Frequency Division Multiplexing System

作　　者：李晓勇[1] 李丁山[1] 

机构地区：[1]武汉船舶通信研究所,武汉430079

出　　处：《舰船电子工程》2013年第1期79-80,136,共3页Ship Electronic Engineering

摘　　要：短波信道具有时变、色散、衰落等特点。在短波宽带多载波系统中,信道估计对数据的可靠传输至关重要,必须采用有效的信道估计方法来实时地跟踪信道的变化。该文研究了三种短波信道估计算法,并仿真比较其性能。结果表明,改进的变换域方法在短波信道中具有较好的效果,对工程实践有较好的指导意义。In the system of wideband multi-carrier communication, due to the time and frequency selective variant of the channel encoun- tered on the date transmissions, the channel has to be estimated. This paper lists three methods of channel estimate, the result of simulation indicates that the improved of the transform domain processing has a better performance.

关 键 词：OFDM 信道估计 变换域处理 

分 类 号：TN919[电子电信—通信与信息系统]