For 3D beam access in massive multi-input multi-output (MIMO) systems, this paper
proposes a feasible two-stage 3D codebook design and corresponding fast beam training …

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

Millimeter wave (mmWave) communication has emerged as a key technology for achieving
high data-rates and low latency in 5G networks. Radio-frequency (RF) or analog …

In mmWave communication system, beam training is an effective way to achieve beam
alignment and its objective is to find the the optimal beam which provides the highest …

In this paper, we propose an adaptive beam search algorithm for the initial alignment of
millimetre-Wave beams. The proposed algorithm works by gradually deactivating beams …

Different from the existing predefined hierarchical codebook before the beam training, we
design a computation-aided adaptive codebook and propose a beam training algorithm …

One of the key revolutionary services that will be offered by 5G is ultra-reliable low latency
communication. This will enable the development of new emerging technologies such as …

The use of hierarchical codebooks in radio communication is of great interest today.
However, using this codebook in transmitters and receivers in real-world transmission …

Grant-free access is an attractive approach to enable spectrum-efficient low-latency access
for systems with massive number of users. In this dissertation, we investigate the pilot design …

The fifth-generation (5G) cellular network is expected to meet the demand for ultra-high data
rate, low latency and bulk connectivity due to the massive deployment of internet of things …