I.M. Lerner1, A.N. Khairullin2, D.V. Shushpanov3, R.R. Fayzullin4, A.R. Yusupov5, S.G. Grigoriev6

1,2,4 Kazan National Research Technical University named after A.N. Tupolev – KAI (Kazan, Russia)

3 The Bonch-Bruevich Saint Petersburg State University of Telecommunications (St. Petersburg, Russia)

5 Bashkir State Pedagogical University named after M. Akmully (Ufa, Russia)

6 Moscow City Pedagogical University (Moscow, Russia)

1 aviap@mail.ru, 2 mr.khayrullin.a@gmail.com, 3 dimasf@inbox.ru, 4 rrfayzullin@kai.ru, 5 azat.yusupov@bk.ru, 6 grigorsg@yandex.ru

Currently, in connection with the transition to the information society, there is an increase in the volume of transmitted and processed information, this fact is especially pronounced among data processing centers that use mainly wired optical input-output interfaces. Analysis of the latest results in this area indicates that receiving devices of such interfaces should use the simplest processing algorithms, allowing to ensure the greatest economic effect, since the distances over which data is transmitted are quite small. Therefore, most often in the specified class of interfaces, modulation of the intensity of optical radiation is used, and the receiver is linear and implements direct detection. In addition, there are trends towards the use of optical multi-core cables, since they allow a multiple increase in capacity, however, when used, the presence of crosstalk between individual cores becomes critical. In this paper a new approach and algorithm with time linear complexity have been developed for analyzing the integrity of a signal and assessing the performance parameters of a wired telecommunication system using a linear receiver, in which information is transmitted using a unipolar PAM-n signal in the presence of crossovers, under conditions of ensuring synchronization of the durations of channel symbols on the receiving side and the moments of arrival of information sequences. Limitations on its application are listed.

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