A 3GPP-Like Channel Simulation Framework Considering Near-Field Spatial non-Stationary Characteristics of Massive MIMO

Massive MIMO is considered one of the key enabling technologies of the sixth generation (6G). Massive MIMO channel models are essential for designing, evaluating, and optimizing massive MIMO systems. Focus on the two key features of massive MIMO channels, near-field effect (NF) and spatial non-stationary (SnS), a series of models have been proposed. However, few models provide a simulation framework based on the 3GPP channel model, which is the widely used 5G standard model. This paper proposes a 3GPP-like channel simulation framework for massive MIMO channels called NF-SnS. In this framework, the SnS is simulated using a two-state Markov Chain. The NF is simulated by applying the spherical wavefront. Furthermore, the reliability of the NF-SnS framework is validated by comparing NF-SnS simulation results with the 3GPP model and Ray-Tracing results. Generally, the NF-SnS framework can simulate the NF and SnS characteristics of massive MIMO channels and also has the advantages of the 3GPP channel model, such as low implementation complexity and simple configurations.