CORDIC based pipeline architecture for all-pass filters7

An efficient pipeline architecture for normalized lattice all-pass filters is introduced. This is a fully parametric architecture which realizes concurrently λ different mth order all-pass digital filters using a number of m n-stage pipelined coordinate rotations digital computer (CORDIC) processors. The architecture is based on a special purpose CORDIC processing element which performs Given´s rotations. A large number of filters is obtained exploiting the pipeline architecture and making use of the pipeline interleaving technique. The design procedure of an efficient digital equalizer based on the proposed normalized all-pass filter architecture is presented