Coherent States for generalized oscillator with finite-dimensional   Hilbert space
  The construction of oscillator-like systems connected with the given set of orthogonal polynomials and coherent states for such systems developed by authors is extended to the case of the systems with finite-dimensional state space. As example we consider the generalized oscillator connected with Krawtchouk polynomials. 
Vadim V. Borzov, Eugene V. Damaskinsky