CASPIAN JOURNAL

MANAGEMENT AND HIGH TECHNOLOGIES

Characteristics of signal transmission in multibeam channels

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Lemmle Dmitriy V. Characteristics of signal transmission in multibeam channels // Caspian journal : management and high technologies. — 2015. — №2. — pp. 207-216.

Lemmle Dmitriy V. - post-graduate student, Vladimir State University named after Alexander and Nikolay Stoletovs, 87 Gorkiy St., Vladimir, 600000, Russian Federation, dilemm1@yandex.ru

The article presents the research of stability of system for receiving and transmission OFDM signals to influence of noise in the channel, and intersymbol interference because of multipathing. Mathematical model in Simulink system was used for modeling, data from it is processed in Matlab. Bit error probability is valued with help of simulator. There are results of modeling for random Rayleigh multibeam channel and Gaussian noise channel. We got series of graphs of dependence error probability from different parameters of propagation channel and characteristics of OFDM signals. Results help us value influence different parameters of channel on bit error ratio in receiver. Also the article proposes ways of future development as dynamic control parameters of OFDM signal.

Key words: вероятность ошибки, многолучевое распространение, межсимвольная интерференция, рэлеевские замирания, ортогональное мультиплексирование, отношение сигнал/шум, задержка распространения, доплеровский сдвиг, математическая модель, Bit error probability, multi