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 bi...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Omsk State Technical University, Federal State Autonoumos Educational Institution of Higher Education
2018-09-01
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| Series: | Омский научный вестник |
| Subjects: | |
| Online Access: | https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2018/4%20(160)/145-151%20%D0%9F%D1%83%D0%B7%D1%8B%D1%80%D1%91%D0%B2%20%D0%9F.%20%D0%98.,%20%D0%97%D0%B0%D0%B2%D1%8C%D1%8F%D0%BB%D0%BE%D0%B2%20%D0%A1.%20%D0%90.,%20%D0%95%D1%80%D0%BE%D1%85%D0%B8%D0%BD%20%D0%92.%20%D0%92.,%20%D0%A8%D0%B5%D0%B8%D0%BD%20%D0%92.%20%D0%AE..pdf |
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| 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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| ISSN: | 1813-8225 2541-7541 |