The Computational Complexity Reduced Effectively in the Channel Estimation Process

A fast algorithm for solving Toeplitz matrix equation is applied to wireless communication to estimate channel impulse response in this paper. The sequence with ideal cyclic autocorrelation property is used as the basic sequence, and then the training sequence is constructed by cyclic expansion. Therefore, the equation that needs to be solved in the channel estimation process can become a Toeplitz matrix equation, and then the Toeplitz matrix equation can be solved by a fast algorithm to estimate the channel impulse response. It has shown in the simulation results that the computational complexity in the channel estimation process can be effectively reduced and the channel estimation result is accurate.