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Article title STABILITY TO ERRORS IN THE ESTIMATION OF WEIGHT VECTORS OF ADAPTIVE EXISTENTIAL ALGORITHM OF THE RADIO COMMUNICATION ON ANTENNA LATTICES IN THE RELEI’S CHANNEL
Authors V.P. Fedosov, A.V. Emelyanenko
Section SECTION I. METHODS IMAGE AND SIGNAL PROCESSING
Month, Year 11, 2013 @en
Index UDC 004.93’12, 004.93’14
DOI
Abstract Efficiency of use of adaptive algorithm for broadband wireless communication systems in conditions the Rayleigh channel is considered. Object of research is the system of an information transfer with multidimensional signals (OFDM and MIMO-OFDM), applied to the organization of broadband communication in the conditions of multibeam (multipath) channels. An object of research is the problem of increase of throughput and decrease in probability of a bit error of systems of transfer on the basis of signals of high dimension in the conditions of radio channels with time-and-frequency dispersion. The analysis of influence of an error of an estimation of factors of weight vectors in adaptive existential algorithm of a radio communication on antenna lattices with spatial coding is carried out. The analysis shows, that in this algorithm at inexact installation of optimum weight vectors, the beam of an orientation of blocks focuses a maximum is inexact in a direction of arrival of a useful signal on a way with the greatest сapacity. At change of arguments of weight factors, the probability of occurrence of an error of the accepted symbols raises. So, at the relation a signal/noise 16 dB the probability of a bit error increases approximately in 5 times. And at change of the module of weight factors the probability of occurrence of an error increases a little bit more poorly. It is possible to explain it to that in the radio communication channel the phase antenna lattice is used, therefore the system is less steady against disorder of weight factors on argument, instead of on the module.

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Keywords Radio communication; Rayleigh channel; processing of existential signals; adaptation; stability to errors of weight factors.
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