Millimeter wave (mmWave) systems with effective beamforming capability play a key role in
fulfilling the high data-rate demands of current and future wireless technologies. Hybrid …

Terahertz (THz) communications are regarded as a pillar technology for the 6G systems, by
offering multi-ten-GHz bandwidth. To overcome the huge propagation loss, THz ultra …

A variable-phase-shifter (VPS) architecture with hybrid precoding for mixture use of phase
shifters and switches, is proposed for millimeter wave massive multiple-input multiple-output …

Hybrid beamforming for frequency-selective channels is a challenging problem, as the
phase shifters provide the same phase shift to all the subcarriers. The existing approaches …

The advanced wireless communication system requires abridged energy consumption,
enhanced data rate, and good signal coverage. The massive MIMO technology for 5G …

The recent studies on hybrid beamformers with a combination of switches and phase shifters
indicate that such methods can reduce the cost and power consumption of massive multiple …