Performance Improvement for Device-to-Device (D2D) Users in Underlay Cellular Communication Networks

This study focuses on the performance of device-to-device (D2D) communications in underlay cellular networks by analyzing key metrics such as successful transmission probability, coverage probability, and throughput.Under the homogeneous Poisson point process (PPP) spatial distribution of full-duplex (FD)-D2D users in cellular networks, stochastic geometry tools are used to derive approximate expressions for D2D users' coverage probability and throughput.In comparison to the conventional half-duplex (HD) communication mode, when the self-interference cancellation factor reaches -95 dB, there is a substantial improvement in the throughput of FD-D2D users, nearly doubling their gain.Additionally, experimental results demonstrate that the Newton iterative algorithm can be used to optimize the targeted signal-to-interference-plus-noise-ratio (SINR) threshold of users within the range of (10, 20) dB.