Abstract: The time-division multiplexing pilot-assisted channel estimation method was studied in the Rayleigh fading channel. A channel estimation method was proposed by employing the Chebyshev polynomial as the interpolation polynomial. The relationship between the mobile velocity and the order of interpolation polynomials was given. The simulation results show that the method can estimate the fast fading channel, and the channel parameters of the data can be estimated effectively. By using this estimation method, the system's BER performance, compared with linear interpolation method, can be improved distinctly.

Key words: code division multiple access, channel estimation, Chebyshev polynomial, interpolation