Application of a Clipped Reference Signal in a Coherent Radio Communication System Based on Multilevel Chaotic Signals
DOI:
https://doi.org/10.52575/2687-0932-2026-53-1-203-215Keywords:
multilevel chaotic signals, coherent radio communication systems, clipped reference signal, computing resources, reductionAbstract
The paper is mainly focused on the issue of improving the technical design of a coherent radio communication system working on multilevel chaotic signals (CSs) based on clipping. The advantages and disadvantages of CS-based coherent radio communication systems, including multilevel ones, are analyzed.
The authors highlight the task of rational storage of a reference CS, including multilevel storage, on the receiving side. The advantages of multilevel CSs in terms of data transmission secrecy over binary ones are described.
The analysis of the solution to the problem of rational storage of the reference multilevel CS on the receiving side is carried out, which consists in using a clipped copy of the multilevel CS on the receiving side in the form of a sequence of rectangular pulses with an amplitude of +1 and -1 obtained from the original CS. A mathematical description is given, and the advantages and disadvantages of this approach are noted. The paper indicates that such a solution in the future will help reduce the requirements for computing and other resources used on the receiving side. The research findings have enabled us to develop a variant of a coherent radio communication system based on multilevel CSs with a clipped reference signal. The principles of its operation are described. Using modeling, the authors have experimentally substantiated the possibility to use the proposed variant of a coherent radio communication system based on multilevel CSs with a clipped reference signal, which allows transmitting information signals over radio communication channels and restoring them on the receiving side with a certain reliability. It is noted that clipped CSs presented, in the simplest case, in ASCII format occupy several times less memory than multilevel ones with a similar storage method. This makes it possible to reduce the amount of memory occupied by the reference signal in a variant of a coherent radio communication system based on multilevel CSs. The research may be beneficial to developers and manufacturers of relevant radio communication systems, including those used in Internet of Things.
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