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Effectiveness analysis of signal parameters estimation algorithm based on particle filtering


M.N. Sluzhivyi – Ph. D. (Eng.), Associate Professor, Department «Telecommunications», Ulyanovsk State Technical University. E-mail:

Algorithms of recurrent estimation of noisy signal parameters by means of particle filter are considered. Estimation error variance through simulation at various numbers of particles is carried out. It is shown that particle filter application enables to essentially increase estimation accuracy in a broad span of signal-to-noise ratio. Particle filtering algorithms relate to Bayesian filtering methods and are based on sequential Monte Carlo sampling and consequent calculation and weighed summation of current values of conditional probability density function. These algorithms enable to effectively solve essentially nonlinear problems of non-Gaussian signal estimation. It is also shown that experimental values of Kalman filtering error variance significantly exceed the theoretical bound whereas particle filter processing the same experimental data produces values of error variance close to the theoretical bound. The considered particle filtering algorithm enables to obtain estimates close to optimal ones and that is particularly clear at great numbers of particles. The obtained results can be applied when developing signal processing algorithms for modern communication systems and moving vehicle navigation systems using data from landmarks placed on terrain.


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