UDC 621.396.2
MULTI-STAGE RECONFIGURABLE SIGNAL PROCESSING IN SPATIALLY DISTRIBUTED RADIO SYSTEMS
Yu.N. Parshin, Dr. Sc. (Tech.), full professor, Head of the Department, RSREU, Ryazan, Russia; This email address is being protected from spambots. You need JavaScript enabled to view it.
M.V. Grachev, master student, RSREU, Ryazan, Russia; This email address is being protected from spambots. You need JavaScript enabled to view it.
Spatially distributed information systems, for example Internet of Things, make extensive use of net-work-centric principles of construction, which makes it possible to increase the efficiency of resource use. To implement overall characteristics, reconfigurable multi-stage optimization of spatial signal processing is proposed to be used. The aim of this work is to increase noise immunity of signal processing in the presence of interferences by spatial configuration of radio system receiving path. The spatial processing con sidered consists of the following stages: optimal noise-immune processing, optimization of receiving system spatial structure, optimization of load impedances of receiving antenna system. Various signal-interference situa-tions cause the necessity to reconfigure possible types of processing in order to obtain maximum interference immunity with limitations of technical implementation. Optimization at various stages of spatial processing is carried out by both analytical method and numerical methods: gradient method, random search method, genetic algorithm. Noise immunity of a spatially distributed information system under the conditions of electrodynamics mutual influence of receiving systems in some reception points is investigated.
Key words: reconfigurable radio, signal processing, optimization, mutual coupling, spatial diversity, antennas