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2 Journal of Medical Informatics & Technologies

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A routing protocol for wireless network of bedside monitors in fetal surveillance system

Seredynski R., Horoba K., Roj D., Bernys M., Przybyla T., Jezewski J.

Journal of Medical Informatics & Technologies

2012

Vol. 21

27--33

The paper presents the methodology of wireless network design, developed according to the requirements originating from existing wired fetal surveillance systems. The proposed network structure is based on popular radio frequency modules, operating in 433/866MHz band. The described solution is a simple and cost effective alternative to the wired networks, and it will vastly increase the mobility of fetal monitors. The authors also describe software tools which were designed for this purpose and the results of simulations performed on their basis.

Application of generalized filters for estimation of fetal heart rate baseline

Pander T., Przybyla T., Wrobel J., Jezewski J., Roj D.

Journal of Medical Informatics & Technologies

2011

Vol. 17

73--79

This paper addresses the problem of impulsive noise cancellation in digital signal area. The myriad and meridian filters are the type of robust filters which are very useful in suppressing the impulsive type of noise. The cost functions of theses filters have very similar structure. In this paper the generalized filter based on Lp norm is presented. The proposed filter operates in a wide range of impulsive noise due to the proper adjustment of p in the Lp norm. The presented filter is applied to suppress an impulsive noise in fetal heart rate (FHR) signal. Simulation results confirm the validity of the proposed filter.