6 papers
Failure-Aware Access Point Selection for Resilient Cell-Free Massive MIMO Networks
Mostafa Rahmani Ghourtani, Junbo Zhao, Yi Chu +3
This paper presents a Failure-Aware Access Point Selection (FAAS) method aimed at improving hardware resilience in cell-free massive MIMO (CF-mMIMO) networks. FAAS selects APs for…
CSI Compression Beyond Latents: End-to-End Hybrid Attention-CNN Networks with Entropy Regularization
Maryam Ansarifard, Mostafa Rahmani, Mohit K. Sharma +3
Massive MIMO systems rely on accurate Channel State Information (CSI) feedback to enable high-gain beam-forming. However, the feedback overhead scales linearly with the number of a…
Lightweight Graph Neural Networks for Enhanced 5G NR Channel Estimation
Sajedeh Norouzi, Mostafa Rahmani, Yi Chu +3
Effective channel estimation CE is critical for optimizing the performance of 5G New Radio NR systems particularly in dynamic environments where traditional methods struggle with c…
Exploring O-RAN Compression Techniques in Decentralized Distributed MIMO Systems: Reducing Fronthaul Load
Mostafa Rahmani, Junbo Zhao, Vida Ranjbar +4
This paper explores the application of uplink fronthaul compression techniques within Open RAN (O-RAN) to mitigate fronthaul load in decentralized distributed MIMO (DD-MIMO) system…
Pilot and Data Power Control for Uplink Cell-free massive MIMO
Saeed Mohammadzadeh, Mostafa Rahmani, Kanapathippillai Cumanan +2
This paper introduces a novel iterative algorithm for optimizing pilot and data power control (PC) in cell-free massive multiple-input multiple-output (CF-mMIMO) systems, aiming to…
Testbed Development: An Intelligent O-RAN based Cell-Free MIMO Network
Yi Chu, Mostafa Rahmani, Josh Shackleton +4
Cell-free multiple input multiple output (CF-MIMO) systems improve spectral and energy efficiencies using distributed access points (APs) to provide reliable service across an area…