Quadrature Chaos Phase Shift Keying Communication System Based on Vilnius Chaos Oscillator

The paper presents the research on the quadrature chaos phases shift keying (QCPSK) communication system designed using Vilnius chaos oscillators as the system's core elements. The study's objective is to estimate the system's performance in the additive white Gaussian noise (AWGN) channel using simulation and experimental approaches. The simulation part of the study is based on a baseband model of the system, while the experimental part applies the main analog components of the system. The simulation and experimental results are comparable, demonstrating the estimated performance of the system. The results open possibilities for applications of analog chaos oscillators as key components in communications systems, thus enhancing the physical level security of information transfer, which is relevant in developing wireless sensor networks (WSNs).