Tolerable Q-Factor Variations in PCM Lines. - Helio Waldman (IEEE Trans. Commun., 1981)

Upper bounds and Hamming spheres under the DC constraint. - Helio Waldman; Eduardo Nisenbaum (IEEE Trans. Inf. Theory, 1995)

Error-Rate Patterns for the Modeling of Optically Amplified Transmission Systems. - Moisés R. N. Ribeiro; Helio Waldman; Jackson Klein; Leonardo de Souza Mendes (IEEE J. Sel. Areas Commun., 1997)

Dynamic priority strategies for wavelength assignment in WDM rings. - Helio Waldman; Divanilson R. Campelo; R. Camelo (GLOBECOM, 2000)

Wireless communications track in Brazil. - Michel Daoud Yacoub; Carlos Eduardo Vassimon; Helio Waldman (IEEE Commun. Mag., 2002)

DiffServ implementation by a balking mechanism in delay-line buffering. - Raul C. Almeida Jr.; Jefferson U. Pelegrini; Helio Waldman (GLOBECOM, 2003)

A new analytical approach for the estimation of blocking probabilities in linear all-optical networks. - Helio Waldman; Divanilson Campelo; Raul C. Almeida Jr. (GLOBECOM, 2003)

Meeting Optical QoS Requirements with Reduced Complexity in Dynamic Wavelength Assignment. - Iguatemi E. Fonseca; Raul C. Almeida Jr.; Helio Waldman; Moisés R. N. Ribeiro (BROADNETS, 2004)

Optical buffer modelling for performance evaluation considering any packet inter-arrival time distribution. - Raul C. Almeida Jr.; Jefferson U. Pelegrini; Helio Waldman (ICC, 2004)

Iterative Optimization in VTD to Maximize the Open Capacity of WDM Networks. - Karcius D. R. Assis; Marcio S. Savasini; Helio Waldman (ICT, 2004)

Inter-arrival Planning for Sub-graph Routing Protection in WDM Networks. - Darli A. A. Mello; Jefferson U. Pelegrini; Marcio S. Savasini; Gustavo Sousa Pavani; Helio Waldman (ICT, 2004)

On-Arrival Planning for Sub-Graph Routing Protection in WDM Networks. - Darli A. A. Mello; Marcio S. Savasini; Jefferson U. Pelegrini; Helio Waldman (OpNeTec, 2004)

Analytical calculation of blocking probabilities in WDM rings with wavelength conversion. - Helio Waldman; Divanilson Campelo (BROADNETS, 2005)

Availability maps for connections in WDM optical networks. - Darli A. A. Mello; Dominic A. Schupke; Matthias Scheffel; Helio Waldman (DRCN, 2005)

A generic-traffic optical buffer modeling for asynchronous optical switching networks. - Raul C. Almeida Jr.; Jefferson U. Pelegrini; Helio Waldman (IEEE Commun. Lett., 2005)

A matrix-based analytical approach to connection unavailability estimation in shared backup path protection. - Darli A. A. Mello; Dominic A. Schupke; Helio Waldman (IEEE Commun. Lett., 2005)

Asymptotic blocking probabilities in rings with single-circuit links. - Helio Waldman; Divanilson Campelo (IEEE Commun. Lett., 2005)

Traffic Engineering and Restoration in Optical Packet Switching Networks by means of Ant Colony Optimization. - Gustavo Sousa Pavani; Helio Waldman (BROADNETS, 2006)

Grid Resource Management by means of Ant Colony Optimization. - Gustavo Sousa Pavani; Helio Waldman (BROADNETS, 2006)

Fiber-based testbed architecture enabling advanced experimental research. - Marcio A. Silva; Tereza Cristina M. B. Carvalho; Regina Melo Silveira; Gélio M. Ferreira; Wilson Vicente Ruggiero; Hugo L. Fragnito; Helio Waldman; Carlos Ruggiero; Luiz F. Lopez (TRIDENTCOM, 2006)

Throughput gains imparted by slotting on a blocking line medium. - Divanilson Campelo; Helio Waldman (IEEE Commun. Lett., 2006)

Regenerator Placement with Guaranteed Connectivity in Optical Networks. - Marcio S. Savasini; Paolo Monti 001; Marco Tacca; Andrea Fumagalli; Helio Waldman (ONDM, 2007)

Accounting for Link Load Correlation in the Estimation of Blocking Probabilities in Arbitrary Network Topologies. - Raul C. Almeida Jr.; Divanilson Campelo; Helio Waldman; Kenneth M. Guild (IEEE Commun. Lett., 2007)

Analytical Bounds on the Unavailability of Protected Connections in WDM Optical Networks. - Darli A. A. Mello; Helio Waldman (IEEE Commun. Lett., 2007)

Analytical calculation of blocking probabilities in WDM rings with the first-fit algorithm. - Divanilson R. Campelo; Raul C. Almeida Jr.; Helio Waldman (Photonic Netw. Commun., 2007)

Wavelength conversion architectures in OBS networks. - José Maranhão Neto; Helio Waldman; André Soares 001; William Giozza (NOMS, 2008)

Distributed approaches for impairment-aware routing and wavelength assignment algorithms in GMPLS networks. - Gustavo Sousa Pavani; Luiz Gustavo Zuliani; Helio Waldman; Maurício F. Magalhães (Comput. Networks, 2008)

Efficient Wavelength Assignment Policy for XPM-Impaired WDM Networks. - Raul C. Almeida Jr.; Divanilson Campelo; Adolfo V. T. Cartaxo; Kenneth M. Guild; Helio Waldman (IEEE Commun. Lett., 2008)

Addressing self-similarity in optical switching networks by means of ant colony optimization. - Gustavo Sousa Pavani; Helio Waldman (Photonic Netw. Commun., 2008)

Restoration in wavelength-routed optical networks by means of ant colony optimization. - Gustavo Sousa Pavani; Helio Waldman (Photonic Netw. Commun., 2008)

Co-scheduling in Lambda Grid Systems by means of Ant Colony Optimization. - Gustavo Sousa Pavani; Helio Waldman (Future Gener. Comput. Syst., 2009)

SLA-Aware Survivability. - Helio Waldman; Darli A. A. Mello (J. Networks, 2010)

Routing and wavelength assignment with crankback re-routing extensions by means of ant colony optimization. - Gustavo Sousa Pavani; Helio Waldman (IEEE J. Sel. Areas Commun., 2010)

Interval availability estimation for protected connections in optical networks. - Darli A. A. Mello; Helio Waldman; Gustavo S. Quitério (Comput. Networks, 2011)

MILP formulation for squeezed protection in Spectrum-Sliced Elastic Optical Path Networks. - Karcius D. R. Assis; Raul C. Almeida; Helio Waldman (SPECTS, 2012)

Deadlock avoidance under incremental traffic in the elastic single link. - Helio Waldman; Raul C. Almeida; Rodrigo C. Bortoletto; Karcius Day Rosario Assis (ICTON, 2014)

An analytical defragmentation bound on the performance of the elastic single link with dynamic traffic. - Helio Waldman; Raul C. Almeida; Rodrigo C. Bortoletto; Karcius Day Rosario Assis (ICTON, 2015)

A comparative discussion of some fairness-generating schemes in elastic networking. - Helio Waldman; I. D. T. de Souza; Raul C. Almeida; Rodrigo C. Bortoletto (ICTON, 2016)

Network Virtualization Over Elastic Optical Networks With Different Protection Schemes. - Karcius D. R. Assis; Shuping Peng 001; Raul C. Almeida; Helio Waldman; Ali Hammad; Alex Ferreira dos Santos; Dimitra Simeonidou (JOCN, 2016)

Capacity Partitioning in the Defragmented Elastic Single Link. - Helio Waldman; Raul C. Almeida; Rodrigo C. Bortoletto (ICTON, 2019)

Spectral Idleness Minimization in the Elastic Single Link under Incremental Traffic. - Helio Waldman; Raul C. Almeida; Rodrigo C. Bortoletto (LATINCOM, 2019)

SLA Formulation for Squeezed Protection in Elastic Optical Networks Considering the Modulation Format. - Karcius D. R. Assis; Raul C. Almeida; Helio Waldman; Alex Ferreira dos Santos; Marcelo S. Alencar; Martin J. Reed; Ali Hammad; Dimitra Simeonidou (JOCN, 2019)

Linear formulation for the design of elastic optical networks with squeezing protection and shared risk link group: Invited Paper. - Karcius D. R. Assis; Raul C. Almeida; Helio Waldman; Martin J. Reed; Brigitte Jaumard; Dimitra Simeonidou (ICTON, 2020)

Performance Gains Imparted by Traffic-Awareness in an Elastic Single Link. - Helio Waldman; Raul C. Almeida; Rodrigo C. Bortoletto (ICTON, 2020)

Utilização de Sistemas Multiagentes para a Simulação do Comportamento de Usuários em Redes de Telecomunicações. - Rodrigo Campos Bortoletto; Viktor Santos Moitinho; Helio Waldman (SBRC, 2020)

Revenue Optimization and Protection with Network Slicing over a Physical Optical Substrate. - Karcius D. R. Assis; Raul C. Almeida; Helio Waldman (HPSR, 2021)

Squeezed Protection in Elastic Optical Networks Subject to Multiple Link Failures. - Karcius Day Rosario Assis; Raul C. Almeida; Leonardo P. Dias; Helio Waldman (IEEE Trans. Netw. Serv. Manag., 2021)

A Proactive Algorithm for the Mitigation of Fragmentation Losses in Elastic Links. - Helio Waldman; Rodrigo C. Bortoletto; Vinicius F. de Souza; Raul C. Almeida (LATINCOM, 2022)

A number-theoretic framework for the mitigation of fragmentation loss in elastic optical links. - Helio Waldman; Raul C. Almeida; Rodrigo C. Bortoletto; Vinicius F. de Souza (Photonic Netw. Commun., 2022)

Multipath provisioning for survivable elastic optical networks with optimized RSA ordering selection. - Henrique A. Dinarte; Gabriela W. Teixeira; Raul C. Almeida; Karcius Day Rosario Assis; Helio Waldman; Daniel A. R. Chaves (ICTON, 2023)

A Minimal Idleness Algorithm for Spectrum Assignment on a Single Elastic Link under Dynamic Traffic. - Helio Waldman; Rodrigo C. Bortoletto; Vinicius F. de Souza; Raul C. Almeida-Júnior (ICTON, 2023)

A Comparison between the Erlang and Engset Traffic Models in the Provisioning of an Optical Link. - Helio Waldman; Rodrigo C. Bortoletto; Vinicius F. de Souza (ICTON, 2024)