A Modular MIMO Framework in a RAN-Level Simulator for 5G/6G Performance Evaluation: Methodology and Preliminary Results

Elizabeth Verdugo, Christian Rodrigues, Luiz da Silva Mello, Lisandro Lovisolo

DOI: 10.14209/sbrt.2025.1571157230

Evento: XLIII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT2025)

Keywords: 6G MIMO RAN simulator water-filling

Abstract

This work presents a modular Multiple-Input Multiple-Output (MIMO) framework that is integrated into an existing RAN-level simulator. The MIMO module follows 3GPP specifications (3GPP TR 25.996 v18.0.0 (2024-03)), supporting multiple antenna configurations and spatial channel modeling for enhanced realism. A planar array of dipole elements is implemented and a beamforming technique is applied. The existing simulator, SAMA, is a Python-based tool designed for RAN-level simulation of 5G and 6G networks. A water-filling allocation strategy is used to distribute the power, and the resulting spectral efficiency is compared with the uniform power technique. The methodology is detailed and preliminary results are presented to validate the accuracy and flexibility of the proposed framework. This modular approach enables realistic performance evaluation of MIMO techniques in system-level simulations, providing a valuable tool for the design and optimization of next-generation wireless networks.

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