Quantised H_∞ filtering for networked systems with random sensor packet losses

This study is concerned with the quantised H_∞ filtering problem for discrete-time systems subject to limited communication capacity, which includes measurement quantisation and random sensor packet losses. By introducing an improved quantised random packet-loss model, the effects of the packet-loss rate and the upper bound of consecutive packet losses and the quantisation on the system performance are considered simultaneously. A quantised H_∞ filter design strategy with the minimised static quantiser range is designed to guarantee the error system exponentially mean-square stable and also achieve the prescribed H_∞ disturbance attenuation level. A numerical example is given to illustrate the effectiveness of the proposed filter design method.