NN-Based 8FSK Demodulator for the Covert Channel
In this article, a superposition-based covert channel and its demodulator were proposed and examined. As a covert waveform, an 8FSK modulation was selected. The impact of the channel estimation error and resulting imperfect SIC operation (successive interference cancelation) on the covert informatio...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/22/19/7181 |
| _version_ | 1797476999743143936 |
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| author | Krystian Grzesiak Zbigniew Piotrowski |
| author_facet | Krystian Grzesiak Zbigniew Piotrowski |
| author_sort | Krystian Grzesiak |
| collection | DOAJ |
| description | In this article, a superposition-based covert channel and its demodulator were proposed and examined. As a covert waveform, an 8FSK modulation was selected. The impact of the channel estimation error and resulting imperfect SIC operation (successive interference cancelation) on the covert information demodulation process was considered. Especially for this imperfection, an NN-based demodulator was proposed. The superiority of this solution over the traditional 8FSK correlator-based receiver was examined for various cases, including the hard- and soft-decision detectors. It was proven that, although NN does not provide BER values equal to zero, even for the perfect SIC, it generally overcomes the traditional correlator-based 8FSK demodulator. Simulation results showed that the NN-base demodulator, in the case of additional covert channel coding, provides error-free demodulation, even for four-times greater channel gain error. |
| first_indexed | 2024-03-09T21:11:43Z |
| format | Article |
| id | doaj.art-13c56819e10f4d9592a54a159fc02c96 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T21:11:43Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-13c56819e10f4d9592a54a159fc02c962023-11-23T21:44:46ZengMDPI AGSensors1424-82202022-09-012219718110.3390/s22197181NN-Based 8FSK Demodulator for the Covert ChannelKrystian Grzesiak0Zbigniew Piotrowski1Institute of Communications Systems, Faculty of Electronics, Military University of Technology, 00-908 Warsaw, PolandInstitute of Communications Systems, Faculty of Electronics, Military University of Technology, 00-908 Warsaw, PolandIn this article, a superposition-based covert channel and its demodulator were proposed and examined. As a covert waveform, an 8FSK modulation was selected. The impact of the channel estimation error and resulting imperfect SIC operation (successive interference cancelation) on the covert information demodulation process was considered. Especially for this imperfection, an NN-based demodulator was proposed. The superiority of this solution over the traditional 8FSK correlator-based receiver was examined for various cases, including the hard- and soft-decision detectors. It was proven that, although NN does not provide BER values equal to zero, even for the perfect SIC, it generally overcomes the traditional correlator-based 8FSK demodulator. Simulation results showed that the NN-base demodulator, in the case of additional covert channel coding, provides error-free demodulation, even for four-times greater channel gain error.https://www.mdpi.com/1424-8220/22/19/7181wireless communicationco vert channeldirty constellationsteganographyLPDsecurity |
| spellingShingle | Krystian Grzesiak Zbigniew Piotrowski NN-Based 8FSK Demodulator for the Covert Channel Sensors wireless communication co vert channel dirty constellation steganography LPD security |
| title | NN-Based 8FSK Demodulator for the Covert Channel |
| title_full | NN-Based 8FSK Demodulator for the Covert Channel |
| title_fullStr | NN-Based 8FSK Demodulator for the Covert Channel |
| title_full_unstemmed | NN-Based 8FSK Demodulator for the Covert Channel |
| title_short | NN-Based 8FSK Demodulator for the Covert Channel |
| title_sort | nn based 8fsk demodulator for the covert channel |
| topic | wireless communication co vert channel dirty constellation steganography LPD security |
| url | https://www.mdpi.com/1424-8220/22/19/7181 |
| work_keys_str_mv | AT krystiangrzesiak nnbased8fskdemodulatorforthecovertchannel AT zbigniewpiotrowski nnbased8fskdemodulatorforthecovertchannel |