ESTIMATION AND COMPENSATION FOR SIGNAL-SIGNAL BEATING INTERFERENCE FOR DIRECT DETECTION OFDM IN FIBER-OPTICAL TRANSMISSION SYSTEMS
V. A. Vardanyan
Siberian State University of Telecommunication and Informatics, 630102, Novosibirsk, ul. Kirova, 86
Keywords: волоконно-оптические системы передачи, прямое фотодетектирование, интерференционный шум биений между сигналами (SSBI), ортогональное частотное мультиплексирование (OFDM), однополосная оптическая модуляция (SSB), Q-фактор, fiber-optical transmission systems, direct detection (DD), signal-signal beating interference (SSBI), orthogonal frequency division multiplexing (OFDM), single sideband (SSB), Q-factor
Abstract
A mathematical model is developed for calculating the beating noise that occurs during photodetection of a single-band optical OFDM signal. The model allows one to estimate the spectral distribution of the beating noise and the distortion of the OFDM signal subcarrier levels due to fiber dispersion. The influence of the beating noise on orthogonal subcarrier channels, possible ways of increasing the system transmission capacity, and the method of noise compensation on the receiving side are investigated.
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