Extremely large-scale antenna arrays, tremendously high frequencies, and new types of
antennas are three clear trends in multi-antenna technology for supporting the sixth …

The internet of things (IoT) has a significant economic and environmental impact owing to
the billions or trillions of interconnected devices that use various types of sensors to …

Motivated by the rapid deployment of 5G, we carry out an in-depth measurement study of the
performance, power consumption, and application quality-of-experience (QoE) of …

Intelligent reflecting surface (IRS) is a cost-effective solution for achieving high spectrum and
energy efficiency in future wireless networks by leveraging massive low-cost passive …

Massive multiple-input multiple-output (MIMO) is one of the most promising technologies for
the next generation of wireless communication networks because it has the potential to …

Internet of things (IoT) is one of key pillars in fifth generation (5G) and beyond 5G (B5G)
networks. It is estimated to have 42 billion IoT devices by the year 2025. Currently, carbon …

Wireless Sensor Networks (WSNs) are crucial in supporting continuous environmental
monitoring, where sensor nodes are deployed and must remain operational to collect and …

This monograph presents a unified framework for energy efficiency maximization in wireless
networks via fractional programming theory. The definition of energy efficiency is introduced …

The design of sustainable wireless sensor networks (WSNs) is a very challenging issue. On
the one hand, energy-constrained sensors are expected to run autonomously for long …

The recent concept of beamspace multiple input multiple output (MIMO) can significantly
reduce the number of required radio frequency (RF) chains in millimeter-wave (mmWave) …