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Viewing Publication 1 - 55 from 55

2025

Stochastic Model for a 4 QAM Transmission Subject to the Epidemic Interference EffectMarcelo S. Alencar. entropy, 27(6):642, 2025. [doi]

User-Centric Cell-Free Massive Multiple-Input-Multiple-Output System with Noisy Channel Gain Estimation and Line of Sight: A Beckmann Distribution ApproachDanilo Brito Teixeira de Almeida, Marcelo S. Alencar, Wamberto J. L. Queiroz, Rafael M. Duarte, Francisco Madeiro. entropy, 27(3):223, 2025. [doi]

2024

On the Adaptive Modulation for User-Centric Cell-Free Massive MIMO SystemsDanilo Brito Teixeira de Almeida, Marcelo S. Alencar, Rafael M. Duarte, Hugerles S. Silva, Francisco Madeiro, Waslon T. A. Lopes, Wamberto J. L. Queiroz. access, 12:35325-35336, 2024. [doi]

2023

Channel assignment in TSCH-based wireless sensor networks using fuzzy logicDiego V. Queiroz, Ruan Delgado Gomes, Iguatemi E. Fonseca, Marcelo S. Alencar, César Benavente-Peces. jaihc, 14(5):6043-6062, 2023. [doi]

Energy and Spectral Efficiencies of Cell-Free Millimeter-Wave Massive MIMO Systems Under Rain Attenuation Based on Ray Tracing SimulationsHigo Thaian P. Da Silva, Hugerles S. Silva, Marcelo S. Alencar, Wamberto José Lira de Queiroz, Ugo Silva Dias. access, 11:26979-26995, 2023. [doi]

2022

Communication Systems, Third EditionMarcelo S. Alencar, Valdemar Cardoso da Rocha Jr.. Springer, 2022. [doi]

On the Performance of Location Management in 5G Network Using RRC Inactive StateLidiano A. N. Oliveira, Marcelo S. Alencar, Waslon T. A. Lopes, Francisco Madeiro. access, 10:65520-65532, 2022. [doi]

Evaluation of Cell-Free Millimeter-Wave Massive MIMO Systems Based on Site-Specific Ray Tracing SimulationsHigo T. P. Silva, Rafael M. Duarte, Hugerles S. Silva, Marcelo S. Alencar, Wamberto José Lira de Queiroz. access, 10:82092-82105, 2022. [doi]

2021

Traffic Congestion in Social Networks Caused by Epidemic InterferenceMarcelo S. Alencar. ccnc 2021: 1-4 [doi]

Effect of Epidemic Interference on the Performance of Digital Communication SystemsJoel E. Cordeiro Junior, Marcelo S. Alencar, Marina V. Yashina 0001, Alexander G. Tatashev. softcom 2021: 1-6 [doi]

2020

2019

Performance of a Cell-Free MIMO Under RF MismatchRafael M. Duarte, Danilo Brito Teixeira de Almeida, Marcelo S. Alencar, Fabrício B. S. de Carvalho, Waslon Terllizzie A. Lopes. mswim 2019: 207-210 [doi]

Adaptive and Beacon-based multi-channel protocol for Industrial Wireless Sensor NetworksRuan Delgado Gomes, César Benavente-Peces, Iguatemi E. Fonseca, Marcelo S. Alencar. jnca, 132:22-39, 2019. [doi]

A Fair Power Allocation for Non-Orthogonal Multiple Access in the Power DomainJoel E. Cordeiro Junior, Marcelo S. Alencar, José Valentim Dos Santos Filho, Karcius D. R. Assis. isecure, 11(3):123-130, 2019. [doi]

Particle Swarm Optimization Applied to Control of Mutual Coupling in MIMO SystemsIsrael A. C. Leal, Marcelo S. Alencar, Waslon Lopes. latincom 2019: 1-6 [doi]

Join Multiple Channels and IEEE 802.15.4e TSCH Protocol Use Effects on WSN Performance and Energy EfficiencyDiego V. Queiroz, Ruan Delgado Gomes, César Benavente-Peces, Iguatemi E. Fonseca, Marcelo S. Alencar. peccs 2019: 83-90 [doi]

Bit error probability of the M-QAM scheme subject to multilevel double gated additive white Gaussian noise and η-μ, κ-μ, or α-μ fadingHugerles S. Silva, Wamberto J. L. Queiroz, Danilo Brito Teixeira de Almeida, Francisco Madeiro, Marcelo S. Alencar. ett, 30(12), 2019. [doi]

Bit error probability of the M-QAM scheme under η-μ fading and impulsive noise in a communication system using spatial diversityHugerles S. Silva, Marcelo S. Alencar, Wamberto J. L. Queiroz, Danilo Brito Teixeira de Almeida, Francisco Madeiro. ijcomsys, 32(11), 2019. [doi]

Bit error probability of the M-QAM scheme subject to multilevel (double) gated additive white Gaussian noise and Nakagami-m fadingHugerles S. Silva, Marcelo S. Alencar, Wamberto J. L. Queiroz, Danilo Brito Teixeira de Almeida, Francisco Madeiro. winet, 25(7):4359-4369, 2019. [doi]

2018

Evaluation of Multi-Channel Communication for an Outdoor Industrial Wireless Sensor NetworkRuan Delgado Gomes, Emerson B. Gomes, Iguatemi E. Fonseca, Marcelo S. Alencar, César Benavente-Peces. sensornets 2018: 60-66 [doi]

Evaluation of Channels Blacklists in TSCH Networks with Star and Tree TopologiesDiego V. Queiroz, Ruan Delgado Gomes, César Benavente-Peces, Iguatemi E. Fonseca, Marcelo S. Alencar. mswim 2018: 116-123 [doi]

On the performance of M-QAM for Nakagami channels subject to gated noiseWamberto J. L. Queiroz, Francisco Madeiro, Waslon Terllizzie A. Lopes, Marcelo S. Alencar. telsys, 68(1):1-10, 2018. [doi]

New closed-form expressions for SNR estimates of Nakagami fading channels by the method of momentsWamberto J. L. Queiroz, Danilo B. T. Almeida, Francisco Madeiro, José Vinícius de Miranda Cardoso, Damião F. L. Pereira, Marcelo S. Alencar. telsys, 69(3):321-333, 2018. [doi]

Closed-Form Expression for the Bit Error Probability of the M-QAM for a Channel Subjected to Impulsive Noise and Nakagami FadingHugerles S. Silva, Marcelo S. Alencar, Wamberto J. L. Queiroz, Danilo B. T. Almeida, Francisco Madeiro. wicomm, 2018, 2018. [doi]

2017

2015

Cognitive spectrum sensing based on statistical tests in fading channelsFabricio B. S. de Carvalho, Waslon Terllizzie A. Lopes, Marcelo S. Alencar. latincom 2015: 1-6 [doi]

2014

Signal processing applications for cognitive networks: State of the artF. B. S. de Carvalho, Marcelo Portela Sousa, J. V. S. Filho, J. S. Rocha, Waslon Terllizzie A. Lopes, Marcelo S. Alencar. eusipco 2014: 840-844 [doi]

A spectrum sensing algorithm based on statistic tests for cognitive networks subject to fadingFabricio B. S. de Carvalho, Jeronimo S. Rocha, Waslon Terllizzie A. Lopes, Marcelo S. Alencar. eusipco 2014: 850-854 [doi]

Distributed approach for channel quality estimation using dedicated nodes in industrial WSNRuan Delgado Gomes, Glaucio B. Rocha, Abel Cavalcante Lima-Filho, Iguatemi E. Fonseca, Marcelo S. Alencar. pimrc 2014: 1943-1948 [doi]

A new approach to noise measurement and analysis in an industrial facilityDaniel P. Martins, Marcelo S. Alencar. i2mtc 2014: 964-967 [doi]

Voice segmentation system based on energy estimationRaissa B. Rocha, Virginio V. Freire, Marcelo S. Alencar. eusipco 2014: 860-864 [doi]

Cooperative Modulation Diversity Applied to Heterogeneous Wireless Sensor NetworksMarcelo Portela Sousa, Waslon Terllizzie Araujo Lopes, Francisco Madeiro, Marcelo S. Alencar. dcoss 2014: 338-343 [doi]

2013

2012

Guest Editorial: Special Issue on Wireless Personal Multimedia CommunicationsMarcelo S. Alencar, Neeli Rashmi Prasad, Valdemar C. Da Rocha Jr., António Rodrigues, Elvino S. Sousa. wpc, 64(1):1-2, 2012. [doi]

2008

An Evolutionary Approach for Vector Quantization Codebook OptimizationCarlos R. B. Azevedo, Esdras L. Bispo, Tiago A. E. Ferreira, Francisco Madeiro, Marcelo S. Alencar. isnn 2008: 452-461 [doi]

Digital Television Broadcasting in BrazilMylene Christine Queiroz de Farias, Marcelo M. Carvalho, Marcelo S. Alencar. ieeemm, 15(2):64-70, 2008. [doi]

2007

Closed-Form Expression for the Bit Error Probability of Rectangular QAM Subject to Rayleigh FadingWaslon Terllizzie A. Lopes, Francisco Madeiro, Marcelo S. Alencar. vtc 2007: 915-919 [doi]

2006

Impact of the Estimation Errors and Doppler Effect on the Modulation Diversity TechniqueWaslon Terllizzie A. Lopes, Francisco Madeiro, Juraci Ferreira Galdino, Marcelo S. Alencar. vtc 2006: 1-5 [doi]

Cellular network as a multiplicatively weighted voronoi diagramJ. N. Portela, Marcelo S. Alencar. ccnc 2006: 913-917 [doi]

2004

Outage contours using a Voronoi diagramJ. N. Portela, Marcelo S. Alencar. wcnc 2004: 2383-2386 [doi]

Spacial Analysis of the Local Scatters Channel ModelWamberto J. L. Queiroz, Fabricio G. S. Silva, Marcelo S. Alencar. ICT 2004: 67-73 [doi]

Unified Analysis of the Local Scatters Channel ModelWamberto J. L. Queiroz, Fabricio G. S. Silva, Marcelo S. Alencar. ICT 2004: 60-66 [doi]

1996

Comparing algebraic geometric and Reed-Solomon codes for FH-CDMA applicationsFrancisco M. Assis, Marcelo S. Alencar. pimrc 1996: 1102-1105 [doi]

1995

The effect of fading on the capacity of a CDMA channelMarcelo S. Alencar. pimrc 1995: 1321 [doi]

Code division multiple access using Hermitean codesFrancisco M. Assis, Marcelo S. Alencar. pimrc 1995: 697-700 [doi]

1994

The capacity for a discrete-state code division multiple-access channelMarcelo S. Alencar, Ian F. Blake. jsac, 12(5):925-937, 1994. [doi]

1992

The capacity region for the multiple access Gaussian channel with stochastic fadingMarcelo S. Alencar. pimrc 1992: 266-270 [doi]

The capacity region for the Gaussian channel with random multipathMarcelo S. Alencar. pimrc 1992: 483-487 [doi]

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