Next-Generation Optical Access Networks for C-RAN

Tanaka, Keiji; Agata, A.

doi:10.1364/ofc.2015.tu2e.1

Cited by 52 publications

(24 citation statements)

References 2 publications

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“…Moreover, simulations show that this scheme is robust against laser phase noise, which may allow for the use of cost-effective large-linewidth lasers. The scheme can be applied to access scenarios in which symmetric and high-speed data delivery might be preferred, e. g., point-to-point WDM-PON overlay for demanding applications including next-generation mobile backhaul, mobile fronthaul and business applications [22][23][24].…”

Section: Discussionmentioning

confidence: 99%

Upstream WDM-PON transmission scheme based on PDM-OOK modulation and digital coherent detection with dual-modulus algorithm

Zhu¹,

Li²,

Zhou³

et al. 2015

Opt. Express

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Wavelength-division-multiplexing passive optical network (WDM-PON) is a promising architecture for next-generation access networks because of its large bandwidth, protocol transparency and scalability. In this paper, we propose a cost-effective, high-speed upstream WDM-PON scheme adopting polarization division multiplexed (PDM) on-off keying (OOK) modulation at the optical network unit (ONU) and digital coherent/self-coherent detection with a novel blind dual-modulus equalization algorithm at the optical line terminal (OLT). As such, the upstream capacity can be directly enhanced at low ONU expenditure, and receiver sensitivity as well as power budget can be also improved. Enabled by the scheme, 40-Gb/s upstream transmission in 80-km WDM-PON is experimentally demonstrated.

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Section: Discussionmentioning

confidence: 99%

Upstream WDM-PON transmission scheme based on PDM-OOK modulation and digital coherent detection with dual-modulus algorithm

Zhu¹,

Li²,

Zhou³

et al. 2015

Opt. Express

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“…9), a type of DRoF-based transmission interface, such as CPRI, is employed. The optical data rate of an MFH network must be approximately 16 times as high as the wireless data rate of the mobile cells [16], whereas regarding the MBH network the optical data rate is expected to be almost the same as the wireless data rate of the mobile cells. On the other hand, in future 5G mobile networks, the introduction of small cells operating at wireless data rates higher than 1 Gb/s is expected, and small cells will be densely deployed in high-traffic areas.…”

Section: Mobile Fronthaul Transmission Interface Researchmentioning

confidence: 99%

“…One approach is data compression of the conventional DRoF-based signal (MFH-IF (b)). The optical data rate of MFH networks can be suppressed approximately 50% by down sampling and non-linear quantizing [16]. Another approach redefines the functional allocation of the BBU/RRH (MFH-IF (c)) [17]; the transmission interface is not based on a DRoF interface, but on packets, by setting a functional split point between the BBU and RRH near the MAC functional layer.…”

Section: Mobile Fronthaul Transmission Interface Researchmentioning

confidence: 99%

Technical Features and Approaches on Optical Access Networks for Various Applications

Tsuboi

Taniguchi

Yokotani

2017

IEICE Trans. Commun.

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“…Therefore, high-level coordinations can be realized through technologies such as enhanced inter-cell interference coordination (eICIC) and coordinated multi-point (CoMP) transmission and reception [3]. To connect the fronthaul link between BBU and RRH, current C-RAN mainly employs Common Public Radio Interface (CPRI), which is based on digital transmission of quantized waveforms of in-phase and quadrature (IQ) signals [4].…”

Section: Introductionmentioning

confidence: 99%

IF-over-Fiber Technology Aiming at Efficient Bandwidth Utilization and Perfect Centralized Control for Next-Generation Mobile Fronthaul Links in C-RAN Architectures

Ishimura

Kim

Tanaka

et al. 2018

IEICE Trans. Commun.

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SUMMARYThe intermediate frequency-over-fiber (IFoF) technology has attracted attention as an alternative transmission scheme to the functional split for the next-generation mobile fronthaul links due to its high spectral efficiency and perfect centralized control ability. In this paper, we discuss and clarify network architectures suited for IFoF, based on its advantages over the functional split. One of the major problems for IFoF transmission is dispersion-induced RF power fading, which limits capacity and transmission distance. We introduce our previous work, in which high-capacity and long-distance IFoF transmission was demonstrated by utilizing a parallel intensity/phase modulators (IM/PM) transmitter which can effectively avoid the fading. The IFoF technology with the proposed scheme is well suited for the long-distance mobile fronthaul links for the 5th generation (5G) mobile system and beyond. key words: Centralized RAN (C-RAN), mobile fronthaul, functional split, IF-over-fiber, dispersion-induced RF power fading.

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Next-Generation Optical Access Networks for C-RAN

Cited by 52 publications

References 2 publications

Upstream WDM-PON transmission scheme based on PDM-OOK modulation and digital coherent detection with dual-modulus algorithm

Upstream WDM-PON transmission scheme based on PDM-OOK modulation and digital coherent detection with dual-modulus algorithm

Technical Features and Approaches on Optical Access Networks for Various Applications

IF-over-Fiber Technology Aiming at Efficient Bandwidth Utilization and Perfect Centralized Control for Next-Generation Mobile Fronthaul Links in C-RAN Architectures

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