Hu Yang

Research on OFDAM Channel Estimation Algorithm in Electrical Private Network

In this paper, the channel estimation algorithm based on pilot for orthogonal frequency division multiplexing (OFDM) in electrical special network is studied. Firstly, various channel estimation algorithms are discussed, such as least squares estimation algorithm (LS algorithm) and least mean square error estimation algorithm. And then, a class of interpolation algorithms are introduced, such as linear interpolation, two order linear interpolation and so on. Among them, the time domain filtering algorithm is studied in this paper. In addition, the subspace tracking method is introduced, which is used to track the delay subspace for improving the accuracy of the LS algorithm. The simulation results verify the feasibility of the interpolation algorithm and the time domain filtering algorithm. The research results can be used for communication of the electrical system.