Terahertz (THz) communications, visible-light, and enhanced millimeter wave.
Based on your search for "Key Technologies Comprehensive Guide," you are likely looking for the 2022 Wiley-IEEE Press book by Wei Jiang and Fa-Long Luo. Download Key Technologies Comprehensive Guide rar
Intelligent reflecting surfaces, cell-free massive MIMO, and smart radio networks. Terahertz (THz) communications
Physical and digital copies are available via Amazon and other textbook providers. Content Overview cell-free massive MIMO