Large-scale antenna systems are considered as a viable technology to compensate for
huge path loss in millimeter-wave (mmWave) communications. However, due to the massive …

Analog beamforming with phased arrays is a promising technique for 5G wireless
communication at millimeter wave frequencies. Using a discrete codebook consisting of …

An efficient beam and channel acquisition and tracking scheme is developed under a
reconfigurable hybrid beamforming (R-HBF) architecture for wideband millimeter wave …

There has been increasing demand for accessible radio spectrum with the rapid
development of mobile wireless devices and applications. For example, a GHz of spectrum …

Mobile communications in millimeter wave (mmWave) bands have recently attained a wide
range of research due to the available ultra-broad spectrum bands. In this chapter, we …

Channel model is the fundamental issue to study and design millimeter wave
communications, especially for beam-tracking evaluation where large-scale antenna array is …

In the equivalent frequency-based model, the antenna array gain is utilised to characterise
the frequency response of the beam squint effect generated by the antenna array. This …

This paper proposes hybrid beamforming designs for millimeter-wave (mmWave) multiple-
input multiple-output (MIMO) backhaul systems equipped with uniform planar arrays (UPAs) …

An efficient beam and channel tracking method is developed under a reconfigurable hybrid
beamforming (R-HBF) architecture for wideband millimeter wave (mmWave) multiple input …

The rapid growth of mobile communications and the soaring popularity of smart phones,
tablets, and other mobile devices are creating unprecedented challenges for wireless …