Lattice realization of decomposed 2-D filters

The realization of 2-D FIR filters using lower-upper triangular (LU) decomposition, where the 1-D filters resulting from the decomposition are realized by 1-D lattices, is discussed. Analysis is performed and comparisons are made between the proposed realization and four different structures in terms of hardware cost, cycle time, finite register length effects, and regularity. It is shown that the error performance of the proposed realizations is superior to comparable realizations. It offers the best compromise among the various figures of merit.<>