Joint Design of Phase Shift and Transceiver Beamforming for Intelligent Reflecting Surface Assisted Millimeter-Wave High-Speed Railway Communications
With the emerging demands of new communication services, the contradiction between capacity demand and spectrum shortage of railway communication systems becomes more […]
Performance comparison of near-field focused and conventional phased antenna arrays at 140 GHz
The future high frequency systems require very high antenna gains to cope with the large channel losses. In order to obtain large […]
Channel Estimation Algorithms for Hybrid Antenna Arrays
At the millimeter wave and higher frequency bands the radio channel can often be expressed as a linear combination of a small […]
Bayesian Learning Based Millimeter-Wave Sparse Channel Estimation with Hybrid Antenna Array
We consider the problem of millimeter-wave (mmWave) channel estimation with a hybrid digital-analog two-stage beamforming structure. A radio frequency (RF) chain excites […]