Journal of Systems Science and Complexity

, Volume 27, Issue 3, pp 476–493 | Cite as

White noise estimation for discrete-time systems with random delay and packet dropout

  • Wei WangEmail author
  • Chunyan Han
  • Fang He


This paper is concerned with the optimal and suboptimal deconvolution problems for discrete-time systems with random delayed observations. When the random delay is known online, i.e., time stamped, the random delayed system is reconstructed as an equivalent delay-free one by using measurement reorganization technique, and then an optimal input white noise estimator is presented based on the stochastic Kalman filtering theory. However, the optimal white-noise estimator is timevarying, stochastic, and doesn’t converge to a steady state in general. Then an alternative suboptimal input white-noise estimator with deterministic gains is developed under a new criteria. The estimator gain and its respective error covariance-matrix information are derived based on a new suboptimal state estimator. It can be shown that the suboptimal input white-noise estimator converges to a steady-state one under appropriate assumptions.


Discrete-time system packet dropout random delay white-noise estimators 


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Copyright information

© Institute of Systems Science, Academy of Mathematics and Systems Science, CAS and Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.School of Control Science and EngineeringShandong UniversityJinanChina
  2. 2.School of Electrical EngineeringUniversity of JinanJinanChina

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