Optical OFDM for the data center

Benlachtar, Y.; Bouziane, Rachid; Killey, Robert I.; Berger, Christian; Milder, Peter; Koutsoyannis, Robert; Hoe, James C.; Püschel, Markus; Glick, Madeleine

doi:10.1109/icton.2010.5549137

Cited by 34 publications

(14 citation statements)

References 15 publications

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“…Because of the advantages such as better tolerance to fiber dispersions and the ability to perform one-tap equalization at the frequency domain, OFDM has been demonstrated to be a good candidate for long distance transmission [13] [14]. The feasibility of using OFDM technology for data center application has been discussed in [15], but no actual network architecture has been proposed for the intra-data center network.…”

Section: A Mimo Ofdmmentioning

confidence: 99%

Energy efficient flexible-bandwidth OFDM-based data center network

Kachris

Ji²,

Wang³

et al. 2012

2012 IEEE 1st International Conference on Cloud Networking (CLOUDNET)

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Cloud computing have created the need for more powerful data centers that can face the growing data traffic. These data centers need high bandwidth interconnects that can sustain the high network traffic inside the data center network. Optical interconnects have gained attention recently as a promising energy efficient solution offering high throughput, low latency and reduced energy consumption compared to current networks based on commodity switches. In this paper, we examine the energy consumption of a novel data center network architecture based on cyclic arrayed waveguide grating device and multipleinput multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) technology. The proposed architecture is compared with a reference design based on commodity electrical switches and it is shown that the proposed scheme can provide up to 25% lower power consumption.

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Section: A Mimo Ofdmmentioning

confidence: 99%

Energy efficient flexible-bandwidth OFDM-based data center network

Kachris

Ji²,

Wang³

et al. 2012

2012 IEEE 1st International Conference on Cloud Networking (CLOUDNET)

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“…ADC/DAC blocks which are able to operate at 20 Gsample/s and 22 Gsample/s respectively. In addition, authors of [15] are currently developing a 10 Gbit/s Ultra Wideband (UWB) optical OFDM system. Considering these innovative technologies, in this work we assume a 1024 subcarriers system spanning a 20 GHz bandwidth.…”

Section: Ofdma Transceivermentioning

confidence: 99%

“…On the RF-Interconnect, simultaneous communication between clusters on orthogonal channels seems to be a promising technique for optical and RF interconnect [14] [15], in order to improve their global performance, by providing services to adapt the bandwidth allocation to the data rate. However, state-of-the-art multiband interconnects require large number of redundant components to implement orthogonal channels, i.e.…”

Section: B Ofdma For Rf Resource Allocationmentioning

confidence: 99%

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Flexible Radio Interface for NoC RF-Interconnect

Drillet¹,

Hamieh²,

Zerioul³

et al. 2014

2014 17th Euromicro Conference on Digital System Design

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International audience— This paper introduces flexible radio techniques inside integrated circuits in order to tackle the interconnect issue for many-core chips. We propose to take benefits from OFDMA for a RF-interconnect associated to a carrier allocation policy and adaptive modulation. A 20 GHz bandwidth is shared between 32 tilesets made of 32 tiles of 4 cores each, for a 4096 cores chip. We adopt a cognitive radio approach in order to dynamically share 1024 carriers, which avoids inter-cluster communication contention and decreases latency compared to conventional static approaches

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“…In the universe of electronic dispersion compensation, pulse-amplitude modulation (PAM) with decision feedback equalizers has been investigated [7]. Recently, optical orthogonal frequency division multiplexing (OFDM) has proved to be an effective solution to the intersymbol interference (ISI) caused by an optical dispersive channel [8][9][10]. The main disadvantage of OFDM, however, is that it involves the generation of complicated waveforms, requiring a potentially expensive digital-to-analog converter (DAC) at the transceiver.…”

Section: Introductionmentioning

confidence: 99%

SC-FDE for MMF short reach optical interconnects using directly modulated 850 nm VCSELs

Teichmann¹,

Barreto²,

Pham³

et al. 2012

Opt. Express

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Abstract:We propose the use of single-carrier frequency-domain equalization (SC-FDE) for the compensation of modal dispersion in short distance optical links using multimode fibers and 850 nm VCSELs. By post-processing of experimental data, we demonstrate, at 7.9% overhead, the error-free transmission (over a 4 Mbit sequence) of OOK-modulated 5 Gbps over 2443 meters of OM3 fiber (with a nominal 3300 MHz×km bandwidth). The proposed solution may be applied as a low cost alternative for data center and supercomputer interconnects. 12. N. Benvenuto, and S. Tomasin, "On the comparison between OFDM and single carrier modulation with a DFE using a frequency-domain feedforward filter," IEEE Trans. Commun. 50, 947-955 (2002).

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Optical OFDM for the data center

Cited by 34 publications

References 15 publications

Energy efficient flexible-bandwidth OFDM-based data center network

Energy efficient flexible-bandwidth OFDM-based data center network

Flexible Radio Interface for NoC RF-Interconnect

SC-FDE for MMF short reach optical interconnects using directly modulated 850 nm VCSELs

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