Digitally Linearized Radio-Over Fiber Transmitter Architecture for Cloud Radio Access Network’s Downlink

Noweir, Mahmood; Zhou, Qiang; Kwan, Andrew; Valivarthi, Raju; Helaoui, Mohamed; Tittel, Wolfgang; Ghannouchi, Fadhel M.

doi:10.1109/tmtt.2018.2819665

Cited by 42 publications

(24 citation statements)

References 30 publications

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“…Sahbudin et al [13] proposed a performance improvement of hybrid subcarrier multiplexing optical spectrum code division multiplexing system using spectral direct decoding detection technique. Noweir et al [14] proposed a cost-effective and compact architecture of an RoF fronthaul link for future 5G mobile C-RANs.…”

Section: Related Workmentioning

confidence: 99%

Radio over fiber system based on a hybrid link for next generation of optical fiber communication

Alaoui¹,

Foshi²,

Zouine³

2019

IJECE

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<p>Radio over fiber technology will play an important role in solving problems facing wireless technology. Envisaging a global village, people could transmit and receive “anytime, anywhere, and anything”. In addition, the explosive growth in internet applications such as the World Wide Web, demonstrates the tremendous increase in bandwidth and low power that the coming world of multimedia interactive applications will require from future networks. ROF technology uses multicarrier modulation like orthogonal frequency division multiplexing (OFDM), which provides an opportunity of having an increased in bandwidth together with an affordable cost and this idea has recently become a suitable topic for many research works. On the other hand, SAC-OCDMA (Spectral Amplitude Coding Optical Code Division Multiple Access) technique is able to enhance the data rate of system and increase the number of user. In this paper we introduce a ROF link using a hybrid OFDM/SAC-OCDMA technique.</p>

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Section: Related Workmentioning

confidence: 99%

Radio over fiber system based on a hybrid link for next generation of optical fiber communication

Alaoui¹,

Foshi²,

Zouine³

2019

IJECE

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“…wireless coverage [6]- [8]. As there is a growing need for network convergence and QoS assurance, current solutions include using DRoF fronthaul links, such as defined in the common public radio interface (CPRI), to extend wireless coverage in a Cloud-RAN (C-RAN) architecture where services are distributed from a centralised baseband unit (BBU) pool is more popular [9], [10].…”

Section: Introductionmentioning

confidence: 99%

“…As a result, the performance significantly degrades along the network. Corresponding strategies, such as optical single side band (OSSB) modulation [13], photonic downconversion, digital predistortion (DPD) technique and injection locking [6], [14], are proposed to overcome these limits. But all these approaches require relatively complex setups based on expensive low-noise devices.…”

Section: Introductionmentioning

confidence: 99%

Novel Digital Radio Over Fiber (DRoF) System With Data Compression for Neutral-Host Fronthaul Applications

Chen

et al. 2020

IEEE Access

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Digital radio-over-fibre transmission has been studied extensively as a way of providing seamless last-mile wireless connectivity by carrying digitised radio frequency (RF) services over broadband optical infrastructures. With the growing demand on wireless capacity and the number of wireless services, a key challenge is the enormous scale of the digital data generated after the digitisation process. In turn, this leads to optical links needing to have very large capacity and hence, high capital expenditure (CAPEX). In this paper, we firstly present and then experimentally demonstrate a multiservice DRoF system for a neutral-host fronthaul link where both forward and reverse links use data compression, multiband multiplexing and synchronisation algorithms. The effect of a novel digital automatic gain control (DAGC) is comprehensively analysed to show an improved RF dynamic range alongside bit rate reduction. In this case, the system allows all cellular services from the three Chinese mobile network operators (MNOs) to be converged onto a single fiber infrastructure. We successfully demonstrate 14 wireless channels over a 10Gbps 20km optical link for indoor and outdoor wireless coverage, showing a minimum error value magnitude (EVM) of <8% and >60dB RF dynamic range. It is believed that the technology provides an ideal solution for last-mile wireless coverage in 5G and beyond. INDEX TERMS Digital radio over fiber, neutral host, cloud radio access network (C-RAN), multiband multiplexing, automatic gain control, 4G, 5G, fronthaul.

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“…Tal aplicabilidade permite explorar a infraestruturaóptica existente, bem como sua capilaridade, para criar uma rede banda larga de distribuição de RF. O estado da arte inclui a distribuição de ondas milimétricas e formas de onda potenciais para 5G [18][19][20], bem como enlaces analógicos de RoF para C-RAN [21,22], assistidos inclusive por processamento digital de sinais [23]. As arquiteturas correlacionadas vêm sendo implementadas utilizando variadas técnicas e componentes, como por exemplo, modulação direta e externa de laser (LD), moduladores eletroópticos de braçoúnico e de fase e quadratura, fotodetectores do tipo PIN (P-Intrinsic-N) e avalanche.…”

Section: Introductionunclassified

“…O objetivoé usar pré-distorção digital (DPD -digital pre-dirtortion) e equalização como soluções para reduzir o EVM RMS obtido na recepção, especialmente em 26 GHz. A principal contribuição em relação ao estado da arte [18][19][20][21][22][23][24][25] refere-se ao emprego conjunto de processamento digital de sinais (DSP -digital signal processing) e DD-MZM na implementação do sistema fibra/rádio para aplicações 5G. Contribuições adicionais em relação a [24,25] referem-seà investigação de ordens superiores de modulação e diferentes larguras de faixa, bem comoà demonstração de vazão igual a 4 Gbit/s e EVM RMS de 4,6% na femtocélula com 10 m de alcance.…”

Section: Introductionunclassified

Sistema fibra/rádio com vazão de Gbit/s para aplicações 5G

Borges¹,

Pereira²,

Marins³

et al. 2019

Anais De XXXVII Simpósio Brasileiro De Telecomunicações E Processamento De Sinais

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Resumo-Este trabalho apresenta a implementação e análise de desempenho de um sistema fibra/rádio para comunicações sem fio de quinta geração (5G). Tal sistema inclui uma rede de distribuição baseada na tecnologia rádio sobre fibra, uma supercélula na banda de 700 MHz, e uma femtocélula na banda de 26 GHz. Pré-distorção digital e equalização foram utilizadas para reduzir o parâmetro de desempenho error vector magnitude (EVM), principalmente para 26 GHz. Resultados experimentais demonstram vazão de até 4 Gbit/s e EVM RMS de 4,6% na femtocélula comárea de cobertura de 10 m, destinada a aplicações banda larga de curto alcance. Palavras-Chave-5G; fotônica de microondas; sistema fibra/rádio.

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Digitally Linearized Radio-Over Fiber Transmitter Architecture for Cloud Radio Access Network’s Downlink

Cited by 42 publications

References 30 publications

Radio over fiber system based on a hybrid link for next generation of optical fiber communication

Radio over fiber system based on a hybrid link for next generation of optical fiber communication

Novel Digital Radio Over Fiber (DRoF) System With Data Compression for Neutral-Host Fronthaul Applications

Sistema fibra/rádio com vazão de Gbit/s para aplicações 5G

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