Filter by type:

PTP-DAL Architecture

Clock Synchronization Algorithms Over PTP-Unaware Networks: Reproducible Comparison Using an FPGA Testbed

Journal paper
Igor Freire, Camila Novaes, Igor Almeida, Eduardo Medeiros, Miguel Berg, Aldebaro Klautau
I. Freire, C. Novaes, I. Almeida, E. Medeiros, M. Berg and A. Klautau, "Clock Synchronization Algorithms Over PTP-Unaware Networks: Reproducible Comparison Using an FPGA Testbed," in IEEE Access, vol. 9, pp. 20575-20601, 2021, doi: 10.1109/ACCESS.2021.3054164.
Publication year: 2021

Testbed Evaluation of Distributed Radio Timing Alignment Over Ethernet Fronthaul Networks

Journal paper
Igor Freire,Igor Almeida, Eduardo Medeiros, Miguel Berg, Chenguang Lu, Elmar Trojer, Aldebaro Klautau
I. Freire et al., "Testbed Evaluation of Distributed Radio Timing Alignment Over Ethernet Fronthaul Networks," in IEEE Access, vol. 8, pp. 87960-87977, 2020, doi: 10.1109/ACCESS.2020.2993204.
Publication year: 2020

5G-PICTURE: A Programmable Multi-tenant 5G Compute-RAN-Transport Infrastructure

Conference paper
Daniel Camps-Mur, Kostas Katsalis, Igor Freire, Jesus Gutierrez, Nikos Makris, Salvatore Pontarelli, Robert Schmidt
D. Camps-Mur et al., "5G-PICTURE: A Programmable Multi-tenant 5G Compute-RAN-Transport Infrastructure," 2019 European Conference on Networks and Communications (EuCNC), Valencia, Spain, 2019, pp. 469-474, doi: 10.1109/EuCNC.2019.8801969.
Publication year: 2019

Improved LPC-Based Fronthaul Compression with High Rate Adaptation Resolution

Journal paper
Leonardo Ramalho, Igor Freire, Chenguang Lu, Miguel Berg, Aldebaro Klautau
L. Ramalho, I. Freire, C. Lu, M. Berg and A. Klautau, "Improved LPC-Based Fronthaul Compression with High Rate Adaptation Resolution," in IEEE Communications Letters, vol. PP, no. 99, pp. 1-1.
Publication year: 2018

Analysis of Controlled Packet Departure to Support Ethernet Fronthaul Synchronization via PTP

Conference paper
Igor Freire, Ilan Sousa, Pedro Bemerguy, Igor Almeida, Chenguang Lu, Miguel Berg, Aldebaro Klautau
I. Freire et al., "Analysis of Controlled Packet Departure to Support Ethernet Fronthaul Synchronization via PTP," 2018 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS), Geneva, Switzerland, 2018, pp. 1-6.
Publication year: 2018

An FPGA-based Design of a Packetized Fronthaul Testbed with IEEE 1588 Clock Synchronization

Conference paper
Igor Freire, Chenguang Lu, Miguel Berg, Aldebaro Klautau
European Wireless 2017; 23th European Wireless Conference, Dresden, Germany, 2017, pp. 1-6.
Publication year: 2017

FPGA-based testbed for synchronization on Ethernet fronthaul with phase noise measurements

Conference paper
Joary Paulo, Igor Freire, Ilan Sousa, Chenguang Lu, Miguel Berg, Igor Almeida, Aldebaro Klautau
2016 1st International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT), Belo Horizonte, Brazil, 2016, pp. 132-136
Publication year: 2016

Analysis and Evaluation of End-to-End PTP Synchronization for Ethernet-Based Fronthaul

Conference paper
Igor Freire, Ilan Sousa, Aldebaro Klautau, Igor Almeida, Chenguang Lu, Miguel Berg
2016 IEEE Global Communications Conference (GLOBECOM), Washington, DC, USA, 2016, pp. 1-6.
Publication year: 2016

Parallel polyphase filtering for pulse shaping on high-speed optical communication systems

Conference paper
Ilan Sousa, Brenda Vilas Boas, Igor Freire, Aldebaro Klautau, Jacklyn D. Reis
Microwave and Optoelectronics Conference (IMOC), 2015 SBMO/IEEE MTT-S International, Porto de Galinhas, 2015, pp. 1-5.
Publication year: 2015

Feasibility of alien crosstalk mitigation with receiver-side MIMO processing on G.fast systems

Conference paper
Diego de Azevedo Gomes, Igor Freire, Aldebaro Klautau, Evaldo Pelaes
Telecommunications (IWT), 2015 International Workshop on, Santa Rita do Sapucai, 2015, pp. 1-7.
Publication year: 2015

Low complexity precoder and equalizer for DMT systems with insufficient cyclic prefix

Conference paper
Igor Freire, Chenguang Lu, Per-Erik Eriksson, Aldebaro Klautau
2014 IEEE Global Communications Conference, Austin, TX, 2014, pp. 3243-3248.
Publication year: 2014