A New Channel Estimation Method in OFDM Systems
OFDM系统中一种新的信道估计方法

All the traditional channel estimation methods have the same default: they use too many pilots which decreases the frequency efficiency. The subject of this paper mainly focuses on the research of new algorithms and proposes the channel estimation principle explicitly: separate the estimation of multi-path amplitude and delay. Periodic block type pilot are used for the path delay. And for amplitude, a dynamic pilot pattern is proposed. Simulation shows that, comparing to the traditional low pass filter methods, the proposed method has better performance, lower complexity, and saving more than 70 percent of the pilots.