Energy-Efficient Duplex Mode Optimization for Network-Assisted Full-Duplex Cell-Free Massive MIMO Systems

Le résumé fourni par la source

Network-Assisted Full-Duplex (NAFD) cell-free massive multiple-input multiple-output (CF-mMIMO) systems can improve the spectral efficiency (SE) by dynamically allocating the numbers of uplink (UL) and downlink (DL) remote antenna units (RAUs) to realize simultaneous UL and DL transmission without self-interference (SI). However, with the promotion of the green communication concept and energy efficiency (EE) becoming an important performance metric, the EE of the NAFD system needs further evaluation and optimization under the realistic energy consumption model. In this paper, a practical energy consumption model for the NAFD systems is established, and its advantages in terms of EE are highlighted compared with the existing Co-frequency Co-time Full Duplex (CCFD) systems. A Q-learning-based duplex mode optimization algorithm is proposed to improve system EE. Simulation results show that the proposed mode optimization algorithm can achieve higher EE compared with existing mode selection schemes.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.