Analog Network Coding for Multi-User Multi-Carrier Differential Chaos Shift Keying Communication System


This paper presents the design and performance analysis of an analog network coding (ANC) theme for multi-user multi-carrier differential chaos shift keying (MC-DCSK) modulation. The incentives to employ the MC-DCSK system are to achieve a better spectral potency and additional economical energy consumption compared to that of a typical DCSK system. The proposed theme considers a network comprising $L$ user nodes $(Lgeq two)$ and a single relay node $R$. During this scheme, called the ANC-based mostly 2-approach relay system, all users transmit their signals to the relay in the first time slot, and also the relay forwards the superposition of the received signals every of the user nodes in the second time slot. At the receiver end, every user mitigates the interference by subtracting its own data signal from the received combined signal and then starts the decoding method. The system design is analytically studied, and the corresponding theoretical bit error rate expression for the multipath fading channel is derived. Additionally, the conventional ANC-DCSK scheme is analyzed and compared to the proposed ANC-based mostly MC-DCSK scheme to show the improvement within the performance of our approach. Finally, to validate the accuracy of the methodology, the simulation results are compared to the connected theoretical expressions.

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