Andrzej Milewski

Learn More
The problems of fast channel estimation and fast start-up equalization in synchronous digital communication systems are considered from the viewpoint of the optimization of the training sequence to be transmitted. Various types of periodic sequences having uniform discrete power spectra are studied. Some of them are new and may be generated with data sets(More)
Polyphase sequences which have a low autocorrelation ensure an easily detectable peak in the output of a matched filter of a radar receiver. The low autocorrelation for polyphase codes is usually described in terms of the maximum magnitude of its sidelobes level. In this paper, an evolutionary algorithm combined with a local optimizer is used to search for(More)
TRICOMED S.A. (Poland) has modified its own knitted polyester vascular prosthesis by change in its physical and chemical characteristics and using hydrophilia. The work has aimed at evaluation of intraoperative tightness and evaluation of change in the number of selected parameters of coagulation and fibrinolysis following implantation of a hydrophilic(More)
Vascular prostheses made of polyester or polytetrafluoroethylene fibres are most frequently used nowadays. Woven polyester prostheses are sealed following the suturing in the circulatory system, but they cause a tissue reaction. Knitted polyesters grafts cause a lesser tissue reaction, but demand intraoperative sealing. Thus numerous tests to improve them(More)
  • 1