Reconfigurable radio access unit to dynamically distribute W-band signals in 5G wireless access networks

Rodríguez, Sebastián; Rommel, Simon; Olmos, Juan José Vegas; Monroy, Idelfonso Tafur

doi:10.1016/j.osn.2016.10.002

Cited by 6 publications

(7 citation statements)

References 21 publications

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“…The experimental setup used to evaluate the proposed NOMA-CAP transmission over a hybrid photonic-wireless downlink follows the concepts of a C-RAN with analog RoF fronthaul [3], [4] and mm-wave radio access units (RAUs) of reduced complexity [8]. The setup-schematically shown in …”

Section: Setupmentioning

confidence: 99%

“…millimeter wave (mm-wave) bands such as IEEE V-(40-75 GHz) and W-bands (75-110 GHz) [3]- [8]. The V-band has been proposed for indoor communications and next generation Wi-Fi due to the atmospheric oxygen absorption peak [7], [9] while the W-band presents a lower atmospheric absorption [7] and is thus favored for both indoor and outdoor wireless communications.…”

mentioning

confidence: 99%

“…The use of centralized radio access networks (C-RANs) is suggested as a key enabler [3], [4], [8], which, combined with radio-overfiber (RoF) on passive optical networks (PONs), is a promising candidate to flexibly support 5G mobile networks [8], [10].…”

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confidence: 99%

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Nonorthogonal Multiple Access and Carrierless Amplitude Phase Modulation for Flexible Multiuser Provisioning in 5G Mobile Networks

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Rommel

Puerta

et al. 2017

J. Lightwave Technol.

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Abstract-In this paper, a combined non-orthogonal multiple access (NOMA) and multiband carrierless amplitude phase modulation (multiCAP) scheme is proposed for capacity enhancement of and flexible resource provisioning in 5G mobile networks. The proposed scheme is experimentally evaluated over a W-band millimeter wave radio-over fiber system. The evaluated NOMA-CAP system consists of six 1.25 GHz multiCAP bands and two NOMA levels with quadrature phase shift keying and can provide an aggregated transmission rate of 30 Gbit/s. The proposed system can dynamically adapt to different user densities and data rate requirements. Bit error rate performance is evaluated in two scenarios: a low user density scenario where the system capacity is evenly split between two users and a high user density scenario where NOMA and multiCAP are combined to serve up to twelve users with an assigned data rate of 2.5 Gbit/s each. The proposed system demonstrates how NOMA-CAP allows flexible resource provisioning and can adapt data rates depending on user density and requirements.Index Terms-Non-orthogonal multiple access, multi-band carrierless amplitude phase modulation, radio-over-fiber, millimeterwave communications, W-band wireless.

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Section: Setupmentioning

confidence: 99%

mentioning

confidence: 99%

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Nonorthogonal Multiple Access and Carrierless Amplitude Phase Modulation for Flexible Multiuser Provisioning in 5G Mobile Networks

Altabás

Rommel

Puerta

et al. 2017

J. Lightwave Technol.

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“…In this RoF (Radio-over-Fiber) scenario, more highly complex operations are carried out by a centralized station, which distributes the data to several RAUs (Radio Access Units) spread along the train tracks, serving as an interface between the network and the wireless transmission to the train. RoF has also been declared a promising option for implementing radio access networks in 5G communications [5,6] . Therefore, the integration of broadband railways communications into 5G networks can be achieved in practice by including them as clusters within optical networks for mobile applications [7] .…”

Section: Journal Of Communications and Information Networkmentioning

confidence: 99%

“…Immediately after that, a second VOA is used to control the optical power incident on the photodiode P PD to perform real time measurements of the BER. In the PD, the optical up-conversion process takes place, and, as a result, an RF signal is generated with a (W-band) carrier frequency of 81 GHz [6,10] . In the electrical domain, the signal is amplified to 8 dB by a medium power amplifier and transmitted using a horn antenna with a gain of 24 dBi.…”

Section: Experimental Setup Descriptionmentioning

confidence: 99%

Beam steering application for W-band data links with moving targets in 5G wireless networks

Morales

Rodríguez

Gallardo

et al. 2017

J. Commun. Inf. Netw.

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Ubiquitous broadband Internet access is one of the major goals of the next generation of wireless communications. However, there are still some locations where this is difficult to achieve. This is the case on moving vehicles and, particularly, on trains. Among the possible solutions to this problem, RoF (Radio-over-Fiber) architectures have been proposed as low-latency, cost-effective candidates. Two elements are introduced to extend the RoF approach. First, the carrier frequency is raised into the W-band (75-110 GHz) to increase the available capacity. Second, a mechanical beam-steering solution based on a Stewart platform is adopted for the transmitter antenna to allow it to follow a moving receiver along a known path, thereby enhancing the coverage area. The performance of a system transmitting a 2.5 Gbit/s non-return-to-zero signal generated by photonic up-conversion over a wireless link is evaluated in terms of real-time BER (Bit Error Rate) measurements. The receiver is situated in different positions, and the orientation of the transmitter is changed accordingly. Values below the forward error correction limit for 7% overhead are obtained over a range of 60 cm around a center point situated 2 m away from the transmitter.

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5G RAN architecture based on analog radio-over-fiber fronthaul over UDWDM-PON and phased array fed reflector antennas

Konstantinou

Bressner

Rommel

et al. 2020

Optics Communications

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This manuscript introduces a 5G radio access network architecture concept based on ultra-dense wavelength division multiplexing (UDWDM) and incorporating an optical fronthaul network that uses a novel wireless antenna system for radio frequency transmission and reception. A ring topology is proposed where optical signals travel within the 5G UDWDM passive optical networks and millimeter waves are generated in the optical line terminals by optical heterodyning. The wireless transmission of the millimeter waves is conducted by an innovative phased array fed reflector antenna approach for mobile communications that grants high antenna gain due to highly focused radiation characteristics, as well as multiplexing gain by multiple beam generation. Furthermore, beam steering is provided by a radio frequency analog beamformer network.Finally, implementation options synthesizing the total system are discussed.

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Reconfigurable radio access unit to dynamically distribute W-band signals in 5G wireless access networks

Cited by 6 publications

References 21 publications

Nonorthogonal Multiple Access and Carrierless Amplitude Phase Modulation for Flexible Multiuser Provisioning in 5G Mobile Networks

Nonorthogonal Multiple Access and Carrierless Amplitude Phase Modulation for Flexible Multiuser Provisioning in 5G Mobile Networks

Beam steering application for W-band data links with moving targets in 5G wireless networks

5G RAN architecture based on analog radio-over-fiber fronthaul over UDWDM-PON and phased array fed reflector antennas

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