一种基于OFDM的正交通道信道估计算法

文章详细介绍了信道估计在OFDM中的应用，提出了一种在电力线通信环境下的信道估计方法——CEOC（Channel Estimation by using Orthogonal Channels）算法。这种信道估计方法能既保留OFDM系统原有的优点，同时又能跟踪信道变化、降低计算复杂度。与其他方法比较，结果表明这种信道估计算法可以有效克服电力线信道快衰落的影响。

Channel estimation method by using OFDM based orthogonal channels

The paper describes the application of channel estimation techniques in OFDM system, proposes an algorithm of channel estimation by using orthogonal channels (CEOC) which is used in PLC communication environment, this channel estimate method can not only keep the original advantage of OFDM system, but also trace the channel change and reduce the calculating complexity. A comparison between CEOC and other methods is then presented. The result shows that the method can effectively overcome the fast fading influence in power-line channel.