An Optimal Design of Low Complexity Interpolation Filter

This paper presents a low complexity design scheme of interpolation filter. The proposed scheme is based on that of our previous paper^[6], and the new interpolator design algorithm is modified to symmetrize symmetries the coefficients based on Farrow structure. The interpolator has the advantage of low complexity, high implementation efficiency and more stable performance. In contrast with the same complexity interpolator, the simulation result shows that the performance, with proposed interpolator, is improved in MSE of interpolation error and more steady to noise.