FH-DMS for Mutual Interference Suppression in Large-Scale In-band Full-Duplex Ad Hoc Networks

With the growing demand for high spectral efficiency in large-scale ad hoc networks, traditional half-duplex communication fails to meet the requirements. Although in-band full-duplex (IBFD) communication improves spectral efficiency, there is serious mutual interference (MI) in high-density node environments. This paper proposes a novel Frequency Hopping and Duplex Mode Selection (FH-DMS) method for MI suppression. By leveraging stochastic geometry theory, the throughput of the IBFD network with FH-DMS is derived. Furthermore, the optimization of the number of frequency hopping points and the FD mode selection probability is analyzed to maximize throughput. Simulation results show that the proposed method reduces MI intensity nearly tenfold and increases throughput by approximately ten times, particularly in high-density, self-interference-limited high-quality communication scenarios.