A novel channel estimation error minimizing interpolation technique for OFDM systems

The use of the efficient interpolation technique with low estimation error is imperative for estimating the channel impulse response at data subcarriers for pilot assisted channel estimation techniques in the Orthogonal Frequency Division Multiplexing (OFDM) systems. In this paper, a novel interpolation technique based on one dimensional interpolation is presented. The proposed interpolation technique is based on minimizing the interpolation error and channel noise inherent in Least Square (LS) estimation. A comparative analysis of the proposed interpolation with conventional one dimensional interpolation techniques shows its performance improvement.