67 citations · 334 across the 53 of their papers we have counts for
11 papers · 1 filter
3-D Localization with Multiple LEDs Lamps in OFDM-VLC system
Luis C. Mathias, Leonimer F. de Melo, Taufik Abrao
Visible light communication (VLC) based localization is a potential candidate for wide range indoor localization applications. In this paper, we propose a VLC architecture based on…
Hybrid Hughes-Hartogs Power Allocation Algorithms for OFDMA Systems
Joao Henrique Inacio de Souza, Taufik Abrao
This work analyzes the discrete solution of Hughes-Hartogs (HH) for the transmission rate maximization problem with power constraint in the OFDMA systems and explores mechanisms to…
FBMC Prototype Filter Design via Convex Optimization
Ricardo Tadashi Kobayashi, Taufik Abrao
In this work, we propose a prototype filter design for Filter Bank MultiCarrier (FBMC) systems based on convex optimization, aiming superior spectrum features while maintaining a h…
Sequential likelihood ascent search detector for massive MIMO systems
Giovanni Maciel Ferreira Silva, Jose Carlos Marinello Filho, Taufik Abrao
In this paper, we have analyzed the performance-complexity tradeoff of {a selective} likelihood ascent search (LAS) algorithm initialized by a linear detector, such as matched filt…
Efficient Detection in Uniform Linear and Planar Arrays MIMO Systems under Spatial Correlated Channels
João Lucas Negrão, Taufik Abrão
In this paper, the efficiency of various MIMO detectors was analyzed from the perspective of highly correlated channels, where MIMO systems have a lack of performance, besides in s…
Massive MIMO Pilot Assignment Optimization based on Total Capacity
Jose Carlos Marinello, Cristiano Magalhaes Panazio, Taufik Abrao
We investigate the effects of pilot assignment in multi-cell massive multiple-input multiple-output systems. When deploying a large number of antennas at base station (BS), and lin…
Efficient ZF-WF Strategy for Sum-Rate Maximization of MU-MISO Cognitive Radio Networks
Lucas Claudino, Taufik Abrao
This article presents an efficient quasi-optimal sum rate (SR) maximization technique based on zero-forcing water-filling (ZFWF) algorithm directly applied to cognitive radio netwo…
Improved Weighted Average Consensus in Distributed Cooperative Spectrum Sensing Networks
Aislan Gabriel Hernandes, Mario Proenca Lemes Junior, Taufik Abrao
This work proposes a fully distributed improved weighted average consensus (IWAC and WAC-AE) technique applied to cooperative spectrum sensing problem in cognitive radio systems. T…
DE/PSO-aided Hybrid Linear Detectors for MIMO-OFDM Systems under Correlated Arrays
Rafael Masashi Fukuda, David William Marques Guerra, Ricardo Tadashi Kobayashi +1
In this paper, we analyze the performance of evolutionary heuristic-aided linear detectors deployed in Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency-Division Multiplex…
Efficient Detectors for MIMO-OFDM Systems under Spatial Correlation Antenna Arrays
David William Marques Guerra, Rafael Masashi Fukuda, Ricardo Tadashi Kobayashi +1
This work analyzes the performance of the implementable detectors for multiple-input-multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) technique under specif…
Closed-Form Directivity Expression for Arbitrary Volumetric Antenna Arrays
Bruno Felipe Costa, Taufik Abrao
It is proposed a closed-form expression of directivity for an arbitrary volumetric antenna arrays using a general element pattern expression of type , with…