Paper
25 July 2022 Spectral holographic coding
Author Affiliations +
Proceedings Volume 12295, Optical Technologies for Telecommunications 2021; 122950W (2022) https://doi.org/10.1117/12.2632147
Event: Nineteenth International Scientific and Technical Conference "Optical Technologies for Communications", 2021, Samara, Russian Federation
Abstract
The paper discusses a method of error-correcting coding based on the transfer of holographic coding of an arbitrary digital signal into the spectral range. The process of coding a code message consists in generating N radio pulses at orthogonal frequencies (a set of frequencies is determined by a holographic encoder for each message) by switching the outputs of N harmonic signal generators operating in a constant mode. The group signal is formed by summing the manipulated harmonics at the input of the transmitter amplifier or directly in the antenna. Signal decoding in the receiver is performed by calculating the spectrum of the received signal and applying an inverse holographic transform to it, which restores the value of the transmitted data block. Spectral holographic coding provides a 7-8 dB gain in noise immunity compared to coding the signal itself. Another advantage of the spectral code is the lower complexity of encoding and decoding when the redundancy is changed over a wide range, as well as high secrecy due to the use of a noise-like signal.
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alexander L. Timofeev, Albert Kh. Sultanov, Ivan K. Meshkov, and Azat R. Gizatulin "Spectral holographic coding", Proc. SPIE 12295, Optical Technologies for Telecommunications 2021, 122950W (25 July 2022); https://doi.org/10.1117/12.2632147
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KEYWORDS
Holography

Signal to noise ratio

Interference (communication)

Holograms

Signal processing

Modulation

Receivers

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