Low-rate modem for transmission of small data in medium frequency range for Arctic

In this paper, we consider the implementation of a low-rate modem for the transmission of small data, such as short text messages, distress messages, commands, notifications, coordinates, etc. The modem uses orthogonal 64-position frequency shift keying characterized by a lower probability of bit er...

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Bibliographic Details
Published in:Omsk Scientific Bulletin
Main Authors: P. I. Puzyrev, S. A. Zavyalov, V. V. Erokhin, V. Yu. Shein
Format: Article in Journal/Newspaper
Language:English
Russian
Published: Omsk State Technical University, Federal State Budgetary Educational Institution of Higher Education 2018
Subjects:
modem
multiple frequency shift keying
detector
Engineering (General). Civil engineering (General)
TA1-2040
Arctic
Online Access:https://doi.org/10.25206/1813-8225-2018-160-145-151
https://doaj.org/article/91f3634923d14b1c82c22d01014b78da
Description
Summary:In this paper, we consider the implementation of a low-rate modem for the transmission of small data, such as short text messages, distress messages, commands, notifications, coordinates, etc. The modem uses orthogonal 64-position frequency shift keying characterized by a lower probability of bit error, the possibility of non-coherent demodulation and a constant envelope. The structure of the modem is designed for implementation in software and for the implementation in languages of the description of equipment for SDR systems. The procedure of primary time synchronization, detection, frame synchronization and demodulation is considered. The use of a low-rate modem will expand the radio coverage area in the Arctic, where there are no cellular networks.

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