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February  2016, 10(1): 63-78. doi: 10.3934/amc.2016.10.63

Probability estimates for reachability of linear systems defined over finite fields

Uwe Helmke 1, , Jens Jordan 2, and  Julia Lieb 2,

1. 

Institut für Mathematik; Lehrstuhl für Mathematik II, Universität Würzburg, Am Hubland, 97074 Würzburg,
2. 

Institute of Mathematics, University of Würzburg, 97074 Würzburg, Germany, Germany

Received  December 2014 Revised  July 2015 Published  March 2016

This paper deals with the probability that random linear systems defined over a finite field are reachable. Explicit formulas are derived for the probabilities that a linear input-state system is reachable, that the reachability matrix has a prescribed rank, as well as for the number of cyclic vectors of a cyclic matrix. We also estimate the probability that the parallel connection of finitely many single-input systems is reachable. These results may be viewed as a first step to calculate the probability that a network of linear systems is reachable.
Keywords: Linear systems, reachability, finite fields, parallel connection., Grassmann manifolds.
Mathematics Subject Classification: Primary: 93B05, 93C05, 11T06; Secondary: 93B25, 93C5.
Citation: Uwe Helmke, Jens Jordan, Julia Lieb. Probability estimates for reachability of linear systems defined over finite fields. Advances in Mathematics of Communications, 2016, 10 (1) : 63-78. doi: 10.3934/amc.2016.10.63
References:
[1]

J.-J. Climent, V. Herranz and C. Perea, A first approximation of concatenated convolutional codes from linear systems theory viewpoint,, Linear Alg. Appl., 425 (2007), 673.  doi: 10.1016/j.laa.2007.03.017.  Google Scholar

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M. Kociecky and K. M. Przyluski, On the number of controllable linear systems over a finite field,, Linear Alg. Appl., 122-124 (1989), 122.  doi: 10.1016/0024-3795(89)90649-6.  Google Scholar

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J. Milnor and J. Stasheff, Characteristic Classes,, Princeton Univ. Press, (1974).   Google Scholar

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J. A. De Reyna and R. Heyman, Counting tuples restricted by coprimality conditions,, preprint, ().   Google Scholar

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J. Rosenthal, J. M. Schumacher and E. V. York, On behaviours and convolutional codes,, IEEE Trans. Inf. Theory, 42 (1996), 1881.  doi: 10.1109/18.556682.  Google Scholar

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J. Rosenthal and E. V. York, BCH Convolutional Codes,, IEEE Trans. Inf. Theory, 45 (1999), 1833.  doi: 10.1109/18.782104.  Google Scholar

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show all references

References:
[1]

J.-J. Climent, V. Herranz and C. Perea, A first approximation of concatenated convolutional codes from linear systems theory viewpoint,, Linear Alg. Appl., 425 (2007), 673.  doi: 10.1016/j.laa.2007.03.017.  Google Scholar

[2]

P. A. Fuhrmann, On controllability and observability of systems connected in parallel,, IEEE Trans. Circ. Syst., 22 (1975).   Google Scholar

[3]

P. A. Fuhrmann and U. Helmke, The Mathematics of Networks of Linear Systems,, Springer, (2015).  doi: 10.1007/978-3-319-16646-9.  Google Scholar

[4]

M. Garcia-Armas, S. R. Ghorpade and S. Ram, Relatively prime polynomials and nonsingular Hankel matrices over finite fields,, J. Combin. Theory Ser. A, 118 (2011), 819.  doi: 10.1016/j.jcta.2010.11.005.  Google Scholar

[5]

U. Helmke, Topology of the moduli space for reachable linear dynamical systems: The complex case,, Math. Syst. Theory, 19 (1986), 155.  doi: 10.1007/BF01704912.  Google Scholar

[6]

U. Helmke, The cohomology of moduli spaces for linear dynamical systems,, Regensburger Math. Schriften, 24 (1993).   Google Scholar

[7]

T. Ho and D. S. Lun, Network Coding: An Introduction,, Cambridge Univ. Press, (2008).  doi: 10.1017/CBO9780511754623.  Google Scholar

[8]

S. Höst, Woven convolutional codes I: Encoder properties,, IEEE Trans. Inf. Theory, 48 (2002), 149.  doi: 10.1109/18.971745.  Google Scholar

[9]

A. S. Jarrah, R. Laubenbacher, B. Stigler and M. Stillman, Reverse-engineering of polynomial dynamical systems,, Adv. Appl. Math., 39 (2007), 477.  doi: 10.1016/j.aam.2006.08.004.  Google Scholar

[10]

M. Kociecky and K. M. Przyluski, On the number of controllable linear systems over a finite field,, Linear Alg. Appl., 122-124 (1989), 122.  doi: 10.1016/0024-3795(89)90649-6.  Google Scholar

[11]

J. Milnor and J. Stasheff, Characteristic Classes,, Princeton Univ. Press, (1974).   Google Scholar

[12]

J. A. De Reyna and R. Heyman, Counting tuples restricted by coprimality conditions,, preprint, ().   Google Scholar

[13]

J. Rosenthal, J. M. Schumacher and E. V. York, On behaviours and convolutional codes,, IEEE Trans. Inf. Theory, 42 (1996), 1881.  doi: 10.1109/18.556682.  Google Scholar

[14]

J. Rosenthal and E. V. York, BCH Convolutional Codes,, IEEE Trans. Inf. Theory, 45 (1999), 1833.  doi: 10.1109/18.782104.  Google Scholar

[15]

S. Sundaram and C. Hadjicostis, Structural controllability and observability of linear systems over finite fields with applications to mult-agent systems,, IEEE Trans. Autom. Control, 58 (2013), 60.  doi: 10.1109/TAC.2012.2204155.  Google Scholar

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