Demodulation Methods for Non-Orthogonal Multicarrier FDCU Signals Toward High-Speed Communications

Key Points

• This research aims to enhance communication capacity by developing effective demodulation methods for FDCU signals.
• Proposed two demodulation methods using experimental and simulation approaches.
• Employed a lightweight neural network for rapid demodulation at lower subcarrier counts.
• Introduced the implicit temporal convergence algorithm to improve demodulation at higher subcarrier counts.
• The ITC algorithm achieved 100% demodulation accuracy at 5 subcarriers with a signal-to-noise ratio of 17 dB.
• Performance improvements recorded under low signal-to-noise ratio conditions using threshold constraints and Gaussian weighting.