Title :
Rate allocation for quantized control over noisy channels
Author :
Bao, Lei ; Skoglund, Mikael ; Fischione, Carlo ; Johansson, Karl Henrik
Author_Institution :
ACCESS Linnaeus Center, R. Inst. of Technol., Stockholm, Sweden
Abstract :
To achieve satisfactory overall performance, optimal rate allocation in a networked control system with highly limited communication resources is instrumental. In this paper, a rate allocation technique for state feedback control in linear dynamic systems over a noisy channel is proposed. The method consists of two steps: (i) the overall cost is expressed as a function of rates at all time instants by means of high-rate quantization theory, and (ii) a constrained optimization problem to minimize the overall distortion is solved. It is shown that a non-uniform quantization is in general the best strategy for state feedback control over noisy channels. Monte Carlo simulations illustrate the proposed scheme, which is shown to have good performance when compared to arbitrarily selected rate allocations.
Keywords :
Monte Carlo methods; channel allocation; channel coding; optimal control; quantisation (signal); state feedback; telecommunication control; Monte Carlo simulation; encoding; high-rate quantization theory; linear dynamic system; networked control system; noisy channel; optimal rate allocation; quantized control; state feedback control; Communication system control; Constraint theory; Control systems; Cost function; Instruments; Linear feedback control systems; Networked control systems; Quantization; Resource management; State feedback;
Conference_Titel :
Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, 2009. WiOPT 2009. 7th International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-4919-4
Electronic_ISBN :
978-1-4244-4920-0
DOI :
10.1109/WIOPT.2009.5291582