An area-efficient interpolation filter using block structure

A new interpolation filtering architecture using block structure and look-up table (LUT) is proposed. Using parallel processing inherited from block structure, the filtering rate and the power consumption are lowered, which makes the proposed architecture appropriate for the modulator in a mobile communication system. Also, applying the symmetric property of filter coefficients, the LUT size and memory requirement are reduced. The proposed filter architecture is generalized by reconstructing the LUT. As a design result, comparison with the prior LUT-based architectures showed that the proposed filter architecture is more area-efficient