In this paper, we focus on the design of the hybrid analog/digital precoding in millimeter
wave multiple-input multiple-output (MIMO) systems. To reduce the feedback overhead, we …

This dissertation begins with an introduction to the evolution of mobile communication
systems, culminating in the next 5th Generation (5G) of wireless systems. In fact, the future …

Massive Multiple-Input Multiple-Output (M-MIMO) is a state of the art technology in wireless
communications, where hundreds of antennas are exploited at the base station (BS) to serve …

This paper considers a low complexity codebook-based beam searching algorithm for
massive MIMO (Multiple Input Multiple Output) systems in limited scattering environments …

For millimeter wave (mmWave) massive multiple-input-multiple-output (MIMO) Xhaul
systems, an initial beam search technique based on the maximum value of the codebook …

Initial access (IA) is identified as a key challenge for the upcoming 5G mobile
communication system operating at high carrier frequencies, and several techniques are …

Initial access beamforming is identified as a key challenge for the upcoming 5G mobile
communication systems operating at high carrier frequencies, and several techniques are …

The aim of this manuscript is to compare the perfor-mance of two transmit beamforming
approaches with an iterative equalizer for millimeter wave (mmW) systems. At the …

Neste trabalho, novas metodologias para otimizar a escolha dos parâmetros dos algoritmos
adaptativos LMS normalizados proporcionais (PNLMS) são propostas. As abordagens …

In the last years, the demand for high data rates increased substantially and the mobile
communications are currently a necessity for our society. Thus, the number of users to …