Evolutionary AP Switch ON/OFF Techniques for Energy-efficient Cell-free Massive MIMO Networks

This document is an arXiv feed containing recent research on advanced wireless communications and sensing, including cell-free massive MIMO energy optimization, SWIPT, HAPS-enabled ISAC, phase-free geometry reconstruction, mmWave access-point sleep modes, digital-twin channel calibration, industrial motor fault diagnosis, secure relay networks, and fluid antenna configuration. The material is research-oriented and does not describe an active vulnerability, exploit, malware, or security incident.