Ultra-Massive MIMO Technologies for 6G Wireless Networks

Hybrid Beamforming in 5G NR Networks Using Multi User Massive MIMO at FR2 Frequency Bands

“…This system gives the tradeoff between BS antennas and data streams per user. It is recommended to have more number of parallel data streams per user to achieve higher throughputs [7]. MU-MIMO HB systems focus on optimization of analog RF precoding/ combining in fully connected and partially connected structures [8].…”

Skin-like copper/carbon nanotubes/graphene composites and low thermogenesis during electromagnetic interference shielding

“…Electromagnetic waves (EMWs), a kind of natural energy, are widespread in nature and can penetrate all aspects of technology and life, [1][2][3][4][5] such as advanced wireless communication technology 6 and industrial microwave sintering technology. 7 Electromagnetic radiation refers to the process by which EMWs are emitted to the outside world, a process that occurs all the time.…”

Facile synthesis of a 2D multilayer core–shell MnO2@LDH@MMT composite with a nanoflower shape for electromagnetic wave absorption

“…As electromagnetic technology is fast developing in civilian and military fields, human beings are living in an environment filled with electromagnetic waves (EW), leading to huge negative impacts on human health, correct operation of equipment, etc. [1][2][3][4][5][6] Ample studies have shown that the microstructure and macrostructure, size, morphology, and dimensionality of electromagnetic composites have different levels of influence on electromagnetic absorption performance. 7,8 Therefore, various types of composite materials are currently designed to promote EW absorption performance by exploiting the synergistic effects between different components and structures.…”