OFDM for Next Generation Optical Access Networks

Cvijetic, Neda

doi:10.1364/ofc.2011.omg3

Cited by 73 publications

(85 citation statements)

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“…In order to meet these bandwidth demands, the Full Service Access Network (FSAN) has begun to look for future-proof access solutions, and the second-stage next generation passive optical network (NG-PON2) has been proposed [1]. Several different NG-PON2 architectures have been proposed, such as, orthogonal frequency division multiplexed (OFDM) PON [2], [3], and timewavelength-division-multiplexed (TWDM) PON [4], [5]. Among them, TWDM-PON is considered as a promising architecture for NG-PON2 since it can provide a much higher data rates by stacking multiples optical line terminals (OLTs) and reuse the existing optical distribution network (ODN).…”

Section: Introductionmentioning

confidence: 99%

Network Architecture of Bidirectional Visible Light Communication and Passive Optical Network

et al. 2016

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Network architectures to combine the fiber network outside the building and the visible light communication (VLC) access network inside the building are important for effectively distributing the high-capacity data to different users. In this paper, we propose a bidirectional network combining the VLC access network and the time-wavelength-division-multiplexed passive optical network (TWDM-PON). Orthogonal frequency division multiplexed modulation is used since it offers high spectral efficiency for both the TWDM-PON and the VLC access network. Low-cost phosphor-based white-light light-emitting diodes are (LEDs) used; hence, the VLC access network can combine with the lighting systems.

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Section: Introductionmentioning

confidence: 99%

Network Architecture of Bidirectional Visible Light Communication and Passive Optical Network

et al. 2016

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“…In order to avoid this source of loss, several methods have been developed to overcome this problem. A recently and interesting technique which can be employed to reduce these losses is the use of subwavelength grating waveguide (SWG) [2].…”

Section: Introductionmentioning

confidence: 99%

“…By considering the grating pitch smaller than the Bragg condition, it is possible to frustrate diffraction and the core will behave approximately as if it was continuous [3]. In this situation, the SWG exhibits some properties for the electromagnetic wave guiding such as the mode delocalization from the core, which can reduce the scattering losses, and provide a way to control the effective refractive index without the need to incorporate different materials [2,4].…”

Section: Introductionmentioning

confidence: 99%

Asymmetric peak to average power ratio impacts on direct‐detected optical OFDM transmission link

Won

Kim

Han

et al. 2016

Micro & Optical Tech Letters

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In this article, the impact of asymmetric peak to average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signal is investigated in direct detection OFDM transmission for the first time. The asymmetric PAPR is produced due to the positive definiteness of direct optical OFDM modulation. It gets bigger and bigger due to the generation of different time delay of each OFDM subcarrier, which is caused by chromatic dispersion. The performance of direct detection optical OFDM link in the presence of asymmetric PAPR is evaluated measuring error vector magnitude (EVM) of quadrature phase shift keying (QPSK) and 16‐qudrature amplitude modulation (QAM) symbols according to the optical transmission length and the transmission rate; 14% EVM (bit error rate of 10−3) of QPSK symbol is observed at the optical transmission length of 400 km despite the usage of channel equalization as well as the insertion of cyclic prefix when the asymmetric PAPR of input optical OFDM signal is above 25 dB. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2662–2665, 2016

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“…The OFDM-PON increases both the transmission rate and distance of an optical network [5]. Moreover, the OFDM-PON, which is designed as a flexible architecture, can dynamically utilize its time and subcarriers [6].…”

Section: Introductionmentioning

confidence: 99%

Two-Stage Resource Allocation to Improve Utilization of Synchronous OFDM-PON Supporting Service Differentiation

Doo¹,

Bang²,

Han³

et al. 2015

ETRI J

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We propose a two‐stage resource allocation algorithm for the high link utilization of an orthogonal frequency‐division multiplexing passive optical network (OFDM‐PON). An OFDM‐PON is assumed to use a synchronous frame structure in supporting service differentiation. In distributing resources, the proposed algorithm first allocates a time window for each optical network unit (ONU), and then it arranges a subchannel, which is a group of subcarriers. This algorithm needs to satisfy two constraints. First, computations for the resource allocation should be done using a frame unit. Second, an ONU has to use a single subchannel to send upstream data for multiple services within a frame duration. We show through a computer simulation that the proposed algorithm improves the link utilization.

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OFDM for Next Generation Optical Access Networks

Cited by 73 publications

References 0 publications

Network Architecture of Bidirectional Visible Light Communication and Passive Optical Network

Network Architecture of Bidirectional Visible Light Communication and Passive Optical Network

Asymmetric peak to average power ratio impacts on direct‐detected optical OFDM transmission link

Two-Stage Resource Allocation to Improve Utilization of Synchronous OFDM-PON Supporting Service Differentiation

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