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Walter C. Freitas Jr.
Walter Cruz Freitas Junior – Walter da C. Freitas – Walter da Cruz Freitas Junior
Person information
- affiliation: Federal University of Ceará, Fortaleza, Brazil
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2020 – today
- 2024
- [c34]Igor B. Palhano, Roberto P. Antonioli, Yuri C. B. Silva, Gábor Fodor, Walter C. Freitas Jr., Michel G. dos Santos:
Power Allocation for Uplink Sensing and Communication in Cell-free ISAC Systems with Multi-Antenna Users and Multibeam. VTC Fall 2024: 1-5 - [c33]Michel G. dos Santos, Gábor Fodor, Yuri C. B. Silva, Walter C. Freitas Jr., Igor B. Palhano:
On Estimating the Angle of Arrival and Doppler Frequency in Bistatic and Multistatic Systems. VTC Fall 2024: 1-5 - 2023
- [j24]Iran Mesquita Braga
, Roberto Pinto Antonioli
Decentralized Joint Pilot and Data Power Control Based on Deep Reinforcement Learning for the Uplink of Cell-Free Systems. IEEE Trans. Veh. Technol. 72(1): 957-972 (2023) - [j23]Iran Mesquita Braga
Efficient Battery Usage in Wireless-Powered Cell-Free Systems With Self-Energy Recycling. IEEE Trans. Veh. Technol. 72(5): 6856-6861 (2023) - [c32]Roberto P. Antonioli, Iran Mesquita Braga, Gábor Fodor, Yuri C. B. Silva, Walter C. Freitas Jr.:
Mixed Coherent and Non-Coherent Transmission for Multi-CPU Cell-Free Systems. ICC 2023: 1068-1073 - [c31]Juno V. Saraiva, Roberto P. Antonioli, Gábor Fodor, Walter da C. Freitas, Yuri C. B. Silva:
Adaptive Power Management for Maximizing Spectral Efficiency and QoS in Cell-Free Systems. ISWCS 2023: 1-6 - 2022
- [j22]Iran Mesquita Braga
Joint Pilot and Data Power Control Optimization in the Uplink of User-Centric Cell-Free Systems. IEEE Commun. Lett. 26(2): 399-403 (2022) - [j21]Juno V. Saraiva
A Network-Assisted Game-Theoretic Design to Power Control in Autoregressive Fading Channels. IEEE Commun. Lett. 26(7): 1663-1667 (2022) - [j20]Roberto Pinto Antonioli
On the Energy Efficiency of Cell-Free Systems With Limited Fronthauls: Is Coherent Transmission Always the Best Alternative? IEEE Trans. Wirel. Commun. 21(10): 8729-8743 (2022) - [c30]Juno V. Saraiva, Roberto P. Antonioli, Gábor Fodor, Walter C. Freitas Jr., Yuri C. B. Silva:
A Distributed Game-Theoretic Solution for Power Management in the Uplink of Cell-Free Systems. GLOBECOM (Workshops) 2022: 1084-1089 - [i2]Roberto P. Antonioli, Iran M. Braga Jr., Gábor Fodor, Yuri C. B. Silva, Walter C. Freitas Jr.:
Mixed Coherent and Non-Coherent Transmission for Multi-CPU Cell-Free Systems. CoRR abs/2212.13950 (2022) - 2021
- [j19]Xi Han
Semiblind Uni-ALS receiver for a two-way MIMO relaying system based on the PARATUCK2 model. Digit. Signal Process. 110: 102916 (2021) - [j18]Juno Vitorino Saraiva
Energy-efficient radio resource allocation for dual-hop relay-assisted orthogonal frequency division multiple access systems with quality of service provisioning. Trans. Emerg. Telecommun. Technol. 32(10) (2021) - [j17]Xi Han
Enhanced Tensor-Based Joint Channel and Symbol Estimation in Dual-Hop MIMO Relaying Systems. IEEE Commun. Lett. 25(5): 1655-1659 (2021) - [j16]Iran Mesquita Braga
Joint Resource Allocation and Transceiver Design for Sum-Rate Maximization Under Latency Constraints in Multicell MU-MIMO Systems. IEEE Trans. Commun. 69(7): 4569-4584 (2021) - [j15]Juno Vitorino Saraiva
Energy Efficiency Maximization Under Minimum Rate Constraints in Multi-Cell MIMO Systems With Finite Buffers. IEEE Trans. Green Commun. Netw. 5(1): 174-189 (2021) - 2020
- [j14]Iran M. Braga Jr.
User Scheduling Based on Multi-Agent Deep Q-Learning for Robust Beamforming in Multicell MISO Systems. IEEE Commun. Lett. 24(12): 2809-2813 (2020) - [j13]Khaled Ardah
Hybrid Analog-Digital Beamforming Design for SE and EE Maximization in Massive MIMO Networks. IEEE Trans. Veh. Technol. 69(1): 377-389 (2020) - [c29]Lucas de S. Abdalah, Pedro Marinho R. de Oliveira, Walter da C. Freitas
Tensor-Based Noninvasive Atrial Fibrillation Complexity Index For Catheter Ablation. CinC 2020: 1-4 - [c28]Isac N. Lira, Pedro Marinho R. de Oliveira, Walter da C. Freitas
Automated Atrial Fibrillation Source Detection Using Shallow Convolutional Neural Networks. CinC 2020: 1-4 - [i1]Juno V. Saraiva, Iran M. Braga Jr., Victor Farias Monteiro, Francisco Rafael Marques Lima, Tarcisio F. Maciel, Walter C. Freitas Jr., Francisco Rodrigo Porto Cavalcanti:
Deep Reinforcement Learning for QoS-Constrained Resource Allocation in Multiservice Networks. CoRR abs/2003.02643 (2020)
2010 – 2019
- 2019
- [j12]Walter da C. Freitas
Tensor-Based Joint Channel and Symbol Estimation for Two-Way MIMO Relaying Systems. IEEE Signal Process. Lett. 26(2): 227-231 (2019) - [j11]Eduardo de Olivindo Cavalcante
Bidirectional Sum-Power Minimization Beamforming in Dynamic TDD MIMO Networks. IEEE Trans. Veh. Technol. 68(10): 9988-10002 (2019) - [c27]Paulo R. B. Gomes, Gábor Fodor
Tensor-Based Modeling and Processing for Channel Estimation in Two-Hop V2X MIMO Systems. CSCN 2019: 1-7 - [c26]Francisco R. V. Guimarães, Gábor Fodor
A Multi-Stream Pricing-Based Precoding and Power Control Algorithm for Dynamic TDD Networks. CSCN 2019: 1-6 - [c25]A. Regilane L. Paiva, Gábor Fodor
Kalman-Filter-Based Tracking of Millimeter-Wave Channel Parameters for V2X Applications. CSCN 2019: 1-7 - [c24]Walter da C. Freitas
Two-Way MIMO Decode-and-Forward Relaying Systems with Tensor Space-Time Coding. EUSIPCO 2019: 1-5 - 2018
- [j10]Walter C. Freitas Jr.
Generalized Khatri-Rao and Kronecker space-time coding for MIMO relay systems with closed-form semi-blind receivers. Signal Process. 151: 19-31 (2018) - [j9]Francisco R. V. Guimarães, Gábor Fodor
Pricing-Based Distributed Beamforming for Dynamic Time Division Duplexing Systems. IEEE Trans. Veh. Technol. 67(4): 3145-3157 (2018) - [j8]Khaled Ardah
A Unifying Design of Hybrid Beamforming Architectures Employing Phase Shifters or Switches. IEEE Trans. Veh. Technol. 67(11): 11243-11247 (2018) - [j7]Khaled Ardah
A Novel Cell Reconfiguration Technique for Dynamic TDD Wireless Networks. IEEE Wirel. Commun. Lett. 7(3): 320-323 (2018) - [j6]Eduardo de Olivindo Cavalcante
Distributed Beamforming in Dynamic TDD MIMO Networks With BS to BS Interference Constraints. IEEE Wirel. Commun. Lett. 7(5): 788-791 (2018) - [c23]Laszlon R. Costa, Darlan C. Moreira, Yuri C. B. Silva, Walter C. Freitas Jr.
User Grouping Based on Spatial Compatibility for Dynamic-TDD Cooperative Networks. GLOBECOM 2018: 1-6 - 2017
- [j5]Walter C. Freitas Jr.
Sequential Closed-Form Semiblind Receiver for Space-Time Coded Multihop Relaying Systems. IEEE Signal Process. Lett. 24(12): 1773-1777 (2017) - [c22]Khaled Ardah
An ADMM approach to distributed coordinated beamforming in dynamic TDD networks. CAMSAP 2017: 1-5 - [c21]Felipe G. A. e Silva, Otávio A. de Lima, Walter da C. Freitas
An efficient, low-cost ECC approach for critical-application memories. SBCCI 2017: 198-203 - 2015
- [c20]Khaled Ardah
Random Element Quantization for Finite Rate Feedback Systems. VTC Spring 2015: 1-5 - 2014
- [j4]Walter C. Freitas Jr.
Blind Joint Channel Estimation and Data Detection for Precoded Multi-Layered Space-Frequency MIMO Schemes. Circuits Syst. Signal Process. 33(4): 1215-1229 (2014) - [j3]Francisco Rafael Marques Lima, Tarcisio Ferreira Maciel
Improved Spectral Efficiency With Acceptable Service Provision in Multiuser MIMO Scenarios. IEEE Trans. Veh. Technol. 63(6): 2697-2711 (2014) - [c19]Francisco M. C. Caldas, Daniel C. Araujo
Hybrid MIMO schemes with MRT precoding and modified SIC receiver. LATINCOM 2014: 1-5 - [c18]Paulo G. Normando, Elvis Miguel Galeas Stancanelli, Yuri C. B. Silva, Walter C. Freitas Jr.
Performance of interference alignment techniques within CoMP-like systems. LATINCOM 2014: 1-6 - 2013
- [c17]Darlan C. Moreira, Paulo G. Normando, Carlos Igor Ramos Bandeira, Walter C. Freitas Jr.
Block diagonalization with subspace based external interference mitigation. PIMRC 2013: 1207-1211 - [c16]Elvis Miguel Galeas Stancanelli, Yuri C. B. Silva, Tarcisio F. Maciel
Clustering-based Assignment within CoMP systems. PIMRC 2013: 2270-2275 - [c15]Carlos Igor Ramos Bandeira, Darlan C. Moreira, Paulo G. Normando, Walter C. Freitas Jr.
Performance of Joint Antenna and User Selection Schemes for Interference Alignment in MIMO Interference Channels. VTC Spring 2013: 1-5 - [c14]Walter C. Freitas Jr.
A Modified Successive Interference Cancellation Algorithm for Hybrid Diversity/Spatial Multiplexing MIMO Schemes. VTC Spring 2013: 1-5 - 2012
- [j2]Francisco Rafael Marques Lima, Tarcisio F. Maciel
Resource Assignment for Rate Maximization With QoS Guarantees in Multiservice Wireless Systems. IEEE Trans. Veh. Technol. 61(3): 1318-1332 (2012) - [c13]Francisco Rafael Marques Lima, Nibia Souza Bezerra, Ricardo B. dos Santos, Tarcisio F. Maciel, Walter C. Freitas Jr., Francisco Rodrigo P. Cavalcanti:
Maximizing Spectral Efficiency with Acceptable Service Provision in Multiple Antennas Scenarios. EW 2012 - 2011
- [c12]Daniel R. Furtado, F. Marcio Caldas, Walter C. Freitas Jr.
Hybrid space-time diversity and spatial-multiplexing MIMO cooperative scheme for wireless communication systems. PIMRC 2011: 1657-1661 - [c11]André L. F. de Almeida
Blind Receiver for Multi-Layered Space-Frequency Coded MIMO Schemes Based on Temporally Extended Linear Constellation Precoding. VTC Fall 2011: 1-5 - 2010
- [j1]Francisco Rafael Marques Lima, Stefan Wänstedt, Francisco Rodrigo P. Cavalcanti
Scheduling for Improving System Capacity in Multiservice 3GPP LTE. J. Electr. Comput. Eng. 2010: 819729:1-819729:16 (2010) - [c10]E. O. Lucena, Francisco Rafael Marques Lima, Walter C. Freitas Jr.
Overload Prediction Based on Delay in Wireless OFDMA Systems. GLOBECOM 2010: 1-5 - [c9]Rodrigo L. Batista, Ricardo B. dos Santos, Tarcisio F. Maciel
Performance Evaluation for Resource Allocation Algorithms in CoMP Systems. VTC Fall 2010: 1-5 - [c8]Tarcisio F. Maciel
Joint Opportunistic Beamforming and Subcarrier Assignment for Maximization of User Satisfaction in OFDMA Systems. VTC Fall 2010: 1-5 - [c7]Martin B. Obando, Walter C. Freitas Jr.
Switching between Hybrid MIMO Structures for Video Transmission Based on Distortion Model. VTC Fall 2010: 1-5
2000 – 2009
- 2007
- [c6]Walter C. Freitas Jr.
MIMO Transmit Structure Assignment with QoS Provision in Wireless Systems. PIMRC 2007: 1-5 - [c5]Ricardo B. dos Santos, Francisco Rafael Marques Lima, Walter C. Freitas Jr.
QoS based Radio Resource Allocation and Scheduling with Different User Data Rate Requirements for OFDMA Systems. PIMRC 2007: 1-5 - 2006
- [c4]Walter C. Freitas Jr.
Hybrid MIMO Transceiver Scheme with Antenna Allocation and Partial CSI at Transmitter Side. PIMRC 2006: 1-5 - 2004
- [c3]Walter C. Freitas Jr.
Performance of MIMO Antenna Systems with Hybrids of Transmit Diversity and Spatial Multiplexing Using Soft-Output Decoding. ICT 2004: 28-37 - 2002
- [c2]Francisco Rodrigo P. Cavalcanti
BLAST/MIMO performance with space-time processing receivers. PIMRC 2002: 859-863 - [c1]Walter C. Freitas Jr.
Link performance evaluation for EGPRS with multiple antennas. PIMRC 2002: 2092-2096
Coauthor Index
André Lima Férrer de Almeida
aka: André L. F. de Almeida
aka: André L. F. de Almeida
Roberto P. Antonioli
aka: Roberto Pinto Antonioli
aka: Roberto Pinto Antonioli
Francisco Rodrigo Porto Cavalcanti
aka: Francisco Rodrigo P. Cavalcanti
aka: Francisco Rodrigo P. Cavalcanti
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last updated on 2024-12-11 21:42 CET by the dblp team
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