摘要
信道估计是水声通信的关键技术之一。信道估计技术可以对信道产生的幅度衰落和相位畸变进行估计,获得信道的状态信息。文章针对水声正交频分复用(Orthogonal frequency divisionmultiplexing,OFDM)通信系统中多径传播情况,介绍了基于最优训练序列信道估计技术。仿真结果表明,基于最优训练序列的信道估计具有明显的优越性,算法实现简单,频带利用率高。
Channel estimation is among the key technologies for underwater communication. Both the am- plitude fading and phrase distortion caused by the channel can be estimated, thus obtaining the channel state in- formation. In this paper an underwater OFDM channel estimation for strong multi-path, based on optimal training sequence, is given. Proved by computer simulation, the method has good performance, with simple al- gorithm and high spectrum using efficiency.
出处
《信息化研究》
2013年第1期31-35,共5页
INFORMATIZATION RESEARCH
关键词
水声通信
正交频分复用(OFDM)
信道估计
最优训练序列
underwater communication
orthogonal frequency division multiplexing（OFDM）
channel estimation
optimal training sequence
