Demonstration of high spectral efficient OFDM-QAM long reach passive optical network

Chow, Chi‐Wai; Yeh, Chien Hung; Wang, C.H.; Shih, Frank Y.; Lin, Yu-Min; Chi, Sien

doi:10.1109/ecoc.2008.4729420

Cited by 12 publications

(10 citation statements)

References 2 publications

(2 reference statements)

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“…Therefore, aggregate data of several Gbps can travel much longer distances without the need for dispersion compensating modules and with high split ratios [2], [3], while other works have shown that OFDM signals are more robust to Rayleigh backscattered light than NRZ signals used in typical PON architectures [7]. Consequently a larger user base can be covered by each CO reducing the cost of deployment and maintenance of COs and distant users can easily be covered.…”

Section: Physical Layer Aspectsmentioning

confidence: 99%

“…Recently OFDM(A) has also been making its way into the optics world, both in core [1], and access networks. In the latter case, studies have proven that OFDM can provide high capacity, long-reach and cost-effective operation for PONs [2], [3]. The use of OFDM in optical access networks has mainly been driven by the necessity to increase transmission rates without increasing the bandwidth of optoelectronic transceivers, as opposed to focusing on link optimization.…”

Section: Introductionmentioning

confidence: 99%

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ACCORDANCE: A novel OFDMA-PON paradigm for ultra-high capacity converged wireline-wireless access networks

Kanonakis

Tomkos

Pfeiffer

et al. 2010

2010 12th International Conference on Transparent Optical Networks

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This paper presents ACCORDANCE, a novel ultra-high capacity extended reach optical access network architecture based on OFDMA technology/protocols, implemented through the proper mix of state-of-the-art photonics and electronics. Such architecture is not only intended to offer improved performance compared to evolving TDMA-PON solutions but also provide the opportunity for convergence between optical, radio and copper-based access. Although OFDM has been used in radio and copper-based communications, it is only recently that is making its way into optics and is expected to increase the system reach and transmission rates without increasing the required cost/complexity of optoelectronic components. ACCORDANCE hence aims to realize the concept of introducing OFDMA-based technology and protocols (Physical and MAC layer) to provide a variety of desirable characteristics, such as increased aggregate bandwidth and scalability, enhanced resource allocation flexibility, longer reach, lower equipment cost/complexity and lower power consumption, while also supporting multi-wavelength operation. In addition, it enables the convergence of the optical infrastructure with standard wireless solutions, thus offering a way to integrate dominant wired and wireless technologies in a hybrid access network supporting seamless ubiquitous broadband services.

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Section: Physical Layer Aspectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

ACCORDANCE: A novel OFDMA-PON paradigm for ultra-high capacity converged wireline-wireless access networks

Kanonakis

Tomkos

Pfeiffer

et al. 2010

2010 12th International Conference on Transparent Optical Networks

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show abstract

“…OFDM in particular has attracted much attention in recent years, and many access networks based on OFDM have been demonstrated [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Most of these experiments incorporated high-performing but costly optical components in the ONUs, such as lasers as local oscillators (LOs) for optical coherent detection at the ONU [18], or they used separate fibers for uplink and downlink [17][18][19][20][21]28], or EDFAs [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Colorless FDMA-PON With Flexible Bandwidth Allocation and Colorless, Low-Speed ONUs [Invited]

Schindler¹,

Schmogrow²,

Dreschmann³

et al. 2013

J. Opt. Commun. Netw.

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We demonstrate a remotely seeded flexible passive optical network (PON) with multiple low-speed subscribers but only a single optical line terminal transceiver operating at a data rate of 31.25 Gbits∕s. The scheme is based on a colorless frequency division multiplexing (FDM)-PON with centralized wavelength control. Multiplexing and demultiplexing in the optical network unit (ONU) is performed in the electronic domain and relies either on FDM with Nyquist sinc-pulse shaping or on orthogonal frequency division multiplexing (OFDM). This way the ONU can perform processing at low speed in the baseband. Further, the ONU is colorless by means of a remote seed for upstream transmission and a remote local oscillator for heterodyne reception, all of which helps in keeping maintenance and costs for an ONU potentially low and will simplify wavelength allocation in a future software defined network architecture. To extend the reach, semiconductor optical amplifiers are used for optical amplification in the downstream and upstream.

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“…A very interesting application of OFDM is Orthogonal Frequency Division Multiple Access (OFDMA), whereby different users are assigned to different OFDM subcarriers. Recently, OFDM/OFDMA has also been making its way into the optics world as well, with recent studies showing that OFDM/OFDMA can provide high capacity, long-reach and cost-effective operation for PONs [4], [5].…”

Section: Introductionmentioning

confidence: 99%

An OFDMA-based optical access network architecture exhibiting ultra-high capacity and wireline-wireless convergence

et al. 2012

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Demonstration of high spectral efficient OFDM-QAM long reach passive optical network

Abstract: We demonstrate a high spectral-efficient LR-PON using 4Gb/s OFDM-QAM for both up-anddownstream, achieving a high split-ratio 256, using optical components optimized for GPON.

Cited by 12 publications

References 2 publications

ACCORDANCE: A novel OFDMA-PON paradigm for ultra-high capacity converged wireline-wireless access networks

ACCORDANCE: A novel OFDMA-PON paradigm for ultra-high capacity converged wireline-wireless access networks

Colorless FDMA-PON With Flexible Bandwidth Allocation and Colorless, Low-Speed ONUs [Invited]

An OFDMA-based optical access network architecture exhibiting ultra-high capacity and wireline-wireless convergence

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