Advances in MIMO Systems

Dear Colleagues,

As the demand for wireless data continues to surge with the global deployment of 5G, research is actively advancing towards 6G to meet even greater performance requirements. A crucial technology at the heart of this evolution is Multiple-Input Multiple-Output (MIMO) systems. MIMO, already pivotal in 5G, will play an even more significant role in 6G by enabling higher data rates, lower latency, enhanced energy efficiency, and increased spectral efficiency.

Recent advances in MIMO technology, such as massive MIMO, reconfigurable intelligent surfaces (RISs), and hybrid beamforming, are shaping the future of wireless communications. These innovations aim to address challenges related to spectrum scarcity, interference, and the massive connectivity demands of IoT, IIoT, and emerging applications like autonomous systems, multisensory extended reality, and holographic rendering. Additionally, the integration of artificial intelligence (AI) and machine learning (ML) techniques into MIMO systems is expected to optimize resource management, beamforming, and signal processing, further pushing the performance boundaries of wireless networks.

This Special Issue will focus on the latest breakthroughs and technical challenges in MIMO systems, particularly in the context of evolving from 5G to 6G. We seek contributions that address cutting-edge developments in MIMO technology, including, but not limited to, novel architectures, AI-enhanced MIMO design, and experimental results from testbeds and field trials. The aim is to gather innovative research that will accelerate the deployment of future MIMO-based wireless networks.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but need not be limited to) the following:

• Massive MIMO, hybrid beamforming, and distributed MIMO architectures;
• AI and machine learning techniques for MIMO optimization, including resource allocation, beamforming, and interference management;
• Reconfigurable intelligent surfaces (RISs) for enhancing MIMO systems;
• Energy efficiency and green communication strategies in MIMO networks;
• Advanced modulation and coding schemes for MIMO;
• Security, privacy, and interference management in MIMO systems;
• Full-duplex MIMO and its role in 6G;
• Millimeter-wave and terahertz MIMO technologies;
• Channel modeling and estimation techniques in MIMO for 5G and beyond;
• Multi-user MIMO for dense wireless environments;
• Field trials, testbeds, and real-world applications of advanced MIMO systems;
• Integration of MIMO with edge computing and AI-driven networks.

We look forward to receiving your contributions.

Dr. Muneeb Ahmad
Prof. Dr. Soo Young Shin
Guest Editors

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