On the realization of 2-D orthogonal state-space systems
Signal Processing
Fast communication: An improved orthogonal digital filter structure
Signal Processing
Low-parametric-sensitivity realizations with relaxed L2-dynamic-range-scaling constraints
IEEE Transactions on Circuits and Systems II: Express Briefs
Very robust low complexity lattice filters
IEEE Transactions on Signal Processing
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In this paper, a new class of lattice-based digital filter structures is derived. The optimum structure problem is formulated in terms of minimizing the signal power ratio with respect to the two sets of free parameters in the proposed structures. An efficient genetic algorithm is proposed to solve the optimum structure problem with the constraint on the structure parameters to be represented in signed power-of-two format. Two design examples are given, in which the optimized structures show excellent finite wordlength properties such as very low parameter sensitivity and very uniform signal powers across signal nodes and outperform the classical lattice structures.