DSP-Based Flexible-Waveform and Multi-Application 5G Fiber-Wireless System

Borges, Ramon Maia; Pereira, Luiz Augusto Melo; Filgueiras, H.R.D.; Ferreira, Alexandre Carvalho; Cunha, Matheus Sêda Borsato; Neto, Egidio Raimundo; Spadoti, Danilo H.; Mendes, Luciano Leonel; Cerqueira, S. Arismar

doi:10.1109/jlt.2019.2947916

Cited by 30 publications

(16 citation statements)

References 42 publications

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“…PAA has also be shown potential to significantly increase the system throughput by almost three times when compared to conventional RoF system. Our research group has recently proposed and published a multi-band architecture towards future mobile communication systems [40]. Future works regard the integration of the new photonics-assisted RF amplification technique in a FiWi system operating with diverse RF bands, including emerging flexible-waveform and multi-application 5G fiber-wireless systems.…”

Section: Discussionmentioning

confidence: 99%

Multiband and Photonically Amplified Fiber-Wireless Xhaul

et al. 2020

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We propose and report the implementation of a multiband and photonically amplified fiberwireless (FiWi) Xhaul based on radio over fiber (RoF) technology and four-wave mixing (FWM) nonlinear effect, aiming 5G applications. The proposed ultra-wideband approach enables to simultaneously transport and amplify multiple radiofrequency (RF) signals through optical links, which might be employed as backhaul, midhaul or fronthaul of cellular systems. The FWM effect, originated from the use of 35m highly nonlinear fiber piece, gives rise to RF gain, when compared to conventional RoF (CRoF) systems. We demonstrate our technique allows replacing two conventional RF amplifiers with enhanced digital performance and/or significantly increasing the system throughput in 2.4 times, attaining 12 Gbit/s. Furthermore, a dual-band (7.5 and 28.0 GHz) wireless fronthaul, preceded by a 12.5-km optical midhaul, illustrates the multiband and photonically amplified FiWi Xhaul, by means of providing performance in terms of root mean square error vector magnitude (EVM RMS) in accordance to the 3GPP recommendations and at low phase noise level. INDEX TERMS 5G networks, four-wave mixing, microwave photonics, optical-wireless networks.

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Section: Discussionmentioning

confidence: 99%

Multiband and Photonically Amplified Fiber-Wireless Xhaul

et al. 2020

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“…Advances in the multiuser FiWi links include simultaneous transmission of multiple RF signals at distinct frequency bands [14] as well as the use of phased array antennas for beamforming and beamsteering [33][34][35]. In [14], we presented a FiWi system over legacy PON based on DD-MZM that was able to cover the 5G eMBB scenario at FR1 and FR2, thereby enabling applications including long reach, fiber-to-the-home, and machine-tomachine communication. In [33], Ruggeri et al reported a multiuser FiWi mm-wave/IFoF system taking advantage of a 32-element 60 GHz phased array antenna with beamsteering capability.…”

Section: Conflicts Of Interestmentioning

confidence: 99%

“…Our research group has been intensely investigating A-RoF solutions for multiband and Gbit/s 5G systems in recent years [14][15][16][17]. The solution presented in [14] takes advantage of an operating gigabit passive optical network (GPON) from a local Internet service provider to distribute 5G-like signals, thus making use of an existing network infrastructure for 5G fronthaul in accordance with C-RAN. The approaches presented in [15,16] explore optical link not only for data transmission but also as a medium to perform photonics-assisted RF amplification.…”

Section: Introductionmentioning

confidence: 99%

Integrating Optical and Wireless Techniques towards Novel Fronthaul and Access Architectures in a 5G NR Framework

et al. 2021

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The fifth-generation of mobile network (5G) and beyond requires a radio access network (RAN) update in order to cope with the incoming increase of wireless data traffic and new applications. In this context, we propose an efficient optical-wireless architecture applied to the non-standalone (NSA) 5G new radio (NR) framework. Several distinct electrical- and optical-based fronthaul configurations combining free-space optical (FSO), wireless links, and radio over fiber (RoF) techniques were implemented and properly analyzed for selection according to network operator deployment requirements. In addition, visible light communication (VLC) was investigated as a future access network technology when immunity to electromagnetic interference is paramount. Experimental results demonstrated fourth-generation of mobile network (4G) and 5G coexistence at Gbit/s throughput and error vector magnitude (EVM) in accordance with 5G NR Release 15.

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“…Despite the fact that LR-PONs have yet not been implemented commercially, their vast potential makes them worthy of research [11]- [13]. Note that wavelength division multiplexing (WDM) is a robust alternative to PONs for bandwidth-hungry applications [3], [14], [15].…”

Section: Introductionmentioning

confidence: 99%

Artificial Neural-Network-Based Pre-Distortion for High Loss-Budget 60-km Long-Reach Passive Optical Network

et al. 2020

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High launch optical power can compensate for severe fading and power loss in long-reach passive optical networks (LR-PONs); however, it also aggravates nonlinear degradation, which necessitates the use of complex DSP-based nonlinear compensation techniques at optical network users (ONUs). DSPrelated techniques also necessitate the use of additional hardware/software components by the receiver, which can greatly increase implementation costs and energy consumption, particularly when dealing with large-scale ONU deployment. This is the first study to propose artificial neural network (ANN)-based pre-distortion to eliminate the need for complex DSP at ONUs in a high-launch-power LR-PON, thereby permitting the use of a simplified architecture at the user end. In the first phase of the study, the proposed ANN-based pre-distortion scheme was implemented in a single-channel IMDD OFDM LR-PON , which achieved a data rate of >55 Gbps over 60-km transmission with a loss budget of 30 dB without the need for optical inline-or pre-amplification. In the second phase of experiments, the same scheme was applied to a 4-channel wavelength division multiplexing (WDM) OFDM LR-PON. Here, the proposed scheme achieved data rates of >200 Gbps using launch power of 18 dBm per lane, resulting in a loss budget of roughly 29 dB over 60-km single mode fiber transmission.

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DSP-Based Flexible-Waveform and Multi-Application 5G Fiber-Wireless System

Cited by 30 publications

References 42 publications

Multiband and Photonically Amplified Fiber-Wireless Xhaul

Multiband and Photonically Amplified Fiber-Wireless Xhaul

Integrating Optical and Wireless Techniques towards Novel Fronthaul and Access Architectures in a 5G NR Framework

Artificial Neural-Network-Based Pre-Distortion for High Loss-Budget 60-km Long-Reach Passive Optical Network

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