Candidate Waveforms for ARoF in Beyond 5G

Santacruz, Javier Pérez; Rommel, Simon; Johannsen, Ulf; Jurado-Navas, Antonio; Monroy, Idelfonso Tafur

doi:10.3390/app10113891

Cited by 22 publications

(29 citation statements)

References 49 publications

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“…If the RF waveform is transported or optical heterodyning is used for IF to mmwave upconversion, ARoF further allows centralizing all RF oscillators and simplifies the mm-wave generation process [20]. ARoF also minimizes the required optical spectrum in the ODN, as the required bandwidth matches the RF bandwidth-although additional bandwidth is needed if optical heterodyning is used, which in turn may be reduced by interleaving channels, e.g., in ultra-dense wavelength division multiplexing (UD-WDM) passive optical networks (PONs) [21,22].…”

Section: Analog Fronthaul With Optical Beamforming For Mm-wave 5gmentioning

confidence: 99%

Real-time high-bandwidth mm-wave 5G NR signal transmission with analog radio-over-fiber fronthaul over multi-core fiber

Rommel

Grivas²,

Cimoli

et al. 2021

J Wireless Com Network

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This article presents an experimental demonstration of a high-capacity millimeter-wave 5G NR signal transmission with analog radio-over-fiber (ARoF) fronthaul over multi-core fiber and full real-time processing. The demonstration validates the core of the blueSPACE fronthaul architecture which combines ARoF fronthaul with space division multiplexing in the optical distribution network to alleviate the fronthaul capacity bottleneck and maintain a centralized radio access network with fully centralized signal processing. The introduction of optical beamforming in the blueSPACE architecture brings true multi-beam transmission and enables full spatial control over the RF signal. The proposed ARoF architecture features a transmitter that generates the ARoF signal and an optical signal carrying a reference local oscillator employed for downconversion at the remote unit from a single RF reference at the central office. A space division multiplexing based radio access network with multi-core fibre allows parallel transport of the uplink ARoF signal and reference local oscillator at the same wavelength over separate cores. A complete description of the real-time signal processing and experimental setup is provided and system performance is evaluated. Transmission of an 800 MHz wide extended 5G NR fronthaul signal over a 7-core fibre is shown with full real-time signal processing, achieving 1.4 Gbit/s with a bit error rate $$<3.8\times 10^{-3}$$ < 3.8 × 10 - 3 and thus below the limit for hard-decision forward error correction with 7% overhead.

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Section: Analog Fronthaul With Optical Beamforming For Mm-wave 5gmentioning

confidence: 99%

Real-time high-bandwidth mm-wave 5G NR signal transmission with analog radio-over-fiber fronthaul over multi-core fiber

Rommel

Grivas²,

Cimoli

et al. 2021

J Wireless Com Network

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“…Low spectral efficiency waveform formats can lead to high spectral amplitude outside the allocated bandwidth. This is known as out of band (OOB) radiation, which causes multiplexed services being transmitted on adjacent frequency channels to interfere with each other, a phenomena known as inter-channel interference (ICI) [6]. 2.…”

Section: Waveform Key Performance Indicators For 5g and Beyond Communicationsmentioning

confidence: 99%

“…Therefore, 5G and beyond generations are envisioned to improve major key performance indicators (KPIs), including data rates, spectral efficiency, power consumption, transceiver complexity, connection density, latency, and mobility [4,5]. This can be done by exploring different methods for achieving a higher capacity of exchanging information with enhanced coverage potential, reliability and availability [2,6].…”

Section: Introductionmentioning

confidence: 99%

“…• More flexible and efficient use of the current spectrum available in sub-6 Ghz bands, which may include the aggregation of non-contiguous and fragmented under-utilized spectrum bands for different network deployment scenarios [11]; • Expand the operation of 5G and beyond mobile network to consider also carrier frequencies above 6 GHz, enabling high capacity and high throughput services with low latency [12]; • The use of milli-meter (mm)-wave systems [13,14] to deliver an unprecedented level of service to the end user while dealing with new challenges, especially regarding high penetration loss, strong Doppler effects, sparsity and directionality [6,12]; • Enhanced higher-order modulations, frame structure, multiple access and coding schemes; •…”

Section: Introductionmentioning

confidence: 99%

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A Survey of Candidate Waveforms for beyond 5G Systems

et al. 2020

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The 5G and beyond future wireless networks aim to support a large variety of services with increasing demand in terms of data rate and throughput while providing a higher degree of reliability, keeping the overall system complexity affordable. One of the key aspects regarding the physical layer architecture of such systems is the definition of the waveform to be used in the air interface. Such waveforms must be studied and compared in order to choose the most suitable and capable of providing the 5G and beyond services requirements, with flexible resource allocation in time and frequency domains, while providing high spectral and power efficiencies. In this paper, several beyond 5G waveforms candidates are presented, along with their transceiver architectures. Additionally, the associated advantages and disadvantages regarding the use of these transmission techniques are discussed. They are compared in a similar downlink transmission scenario where three main key performance indicators (KPIs) are evaluated. They are the peak-to-average power ratio, the overall system spectral efficiency (wherein the out of band emissions are measured, along with the spectral confinement of the power spectral density of the transmitted signals) and the bit error rate performance. Additionally, other KPIs are discussed.

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“…In the new radio (NR), 5G defines different numerologies for OFDM [9] associated to subcarrier spacing values from 15 to 240 kHz. OFDM offers solid wireless communications due to its robustness to frequency selective channels, high spectral efficiency, low out-of-band (OOB) emissions, and efficient multiple-input and multiple output (MIMO) integration [10], [11]. Accordingly, mm-wave cells over ARoF with OFDM is a strong candidate to be part of the beyond 5G architecture.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Compensation of Phase Noise in Mm-Wave OFDM ARoF Systems for Beyond 5G

Santacruz

Rommel

Johannsen

et al. 2021

J. Lightwave Technol.

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Candidate Waveforms for ARoF in Beyond 5G

Cited by 22 publications

References 49 publications

Real-time high-bandwidth mm-wave 5G NR signal transmission with analog radio-over-fiber fronthaul over multi-core fiber

Real-time high-bandwidth mm-wave 5G NR signal transmission with analog radio-over-fiber fronthaul over multi-core fiber

A Survey of Candidate Waveforms for beyond 5G Systems

Analysis and Compensation of Phase Noise in Mm-Wave OFDM ARoF Systems for Beyond 5G

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