H∞ filtering of 2-D discrete systems

  • Authors:
  • Chunling Du;Lihua Xie;Yeng Soh

  • Affiliations:
  • Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ.;-;-

  • Venue:
  • IEEE Transactions on Signal Processing
  • Year:
  • 2000

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Abstract

This paper deals with H∞ filtering of two-dimensional (2-D) linear discrete systems described by a 2-D local state-space (LSS) Fornasini-Marchesini (1978) second model. Several versions of the bounded real lemma of the 2-D discrete systems are established. The 2-D bounded real lemma allows us to solve the finite horizon and infinite horizon H∞ filtering problems using a Riccati difference equation or a Riccati inequality approach. Further a solution to the infinite horizon H∞ filtering problem based on a linear matrix inequality (LMI) approach is developed. Our results extend existing work for one-dimensional (1-D) systems to the 2-D case and give a state-space solution to the bounded realness of 2-D discrete systems as well as 2-D H∞ filtering for the first time. Numerical examples are given to demonstrate the Riccati difference equation approach to the 2-D finite horizon H∞ filtering problem and the LMI approach to the 2-D infinite horizon H∞ filtering problem