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Gbit/s access network using remote delivery optical feeder for heterogeneous broadband wireless and wireline nodes (GANDALF)

Objective

GANDALF aims at demonstrating the simultaneous provision of Gb/s data rates to wireline and wireless access nodes (AN), employing a novel optical feeder concept. The proposed optical feeder employs a dual-drive Mach-Zehnder modulator at the central station (CS) operated in such a way that is possible to recover simultaneously the transmitted broadband data directly at base-band or intermediate frequency (BB/IF) and modulated onto an RF carrier. This architecture allows therefore to remotely feed heterogeneous (wireline and wireless) AN with very interesting features when compared to previous approaches based in fibre-radio techniques.

The optical feeder architecture proposed by GANDALF allow a significant cost reduction with regard to other approaches as alleviate the bandwidth requirements at the transmitter end and simplify the electronics at both transmitting and receiving ends. At the ANs low-cost optoelectronic technologies (simplified hardware and reduced power consumption configurations) will be investigated, for example based in the use of electro-absorption transceivers and Asymmetric FPM. The proposed CS-AN link configuration is compliant with core network technologies such as DWDM and optical packet-switching.

The offered bandwidth allows the provision of multi-service and multi-band applications satisfying future requirements of access networks to cope with the expected evolution of user and application requirements. Other feasible application is the implementation of disaster recovery infrastructure. One of the main targets of GANDALF is to identify on-going standards that employ modulation formats that are suitable to be employed both at BB/IF and RF frequency bands, such as DOCSIS or DVB-S, or to provide prospects to allow this heterogeneous functionality.

Field of science

  • /engineering and technology/electrical engineering, electronic engineering, information engineering/information engineering/telecommunications/wireless

Funding Scheme

STREP - Specific Targeted Research Project

Coordinator

UNIVERSIDAD POLITECNICA DE VALENCIA
Address
Camino De Vera S/n
46022 Valencia
Spain

Participants (11)

ALCATEL THALES III V LAB
France
Address
Route De Nozay
91460 Marcoussis
BUDAPEST UNIVERSITY OF TECHNOLOGY AND ECONOMICS
Hungary
Address
Muegyetem Rakpart 3
1111 Budapest
CABLEUROPA S.A.
Spain
Address
Cl Basauri 7-9 Edificio Belagua
28023 Madrid
EUSKALTEL
Spain
Address
Parque Tecnologico Edificio 809
48160 Derio
FIBERNET S.L.
Spain
Address
C/ Isaac Newton, 10. Parque Tecnologica De Madrid
28760 Tres Cantos
GENERALITAT VALENCIANA
Spain
Address
Calle Caballeros 2 (Palau De La Generalitat)
46001 Valencia
KUNGLIGA TEKNISKA HOEGSKOLAN
Sweden
Address
Valhallavaegen 79
100 44 Stockholm
MOBITEL TELECOMMUNICATION LIMITED PARTNERSHIP
Hungary
Address
Alsohatar Ut. 2/B Ep.
2040 Budaors
TEKMAR SISTEMI S.R.L.
Italy
Address
Via P. De Crescenzi 40
48018 Faenza
THALES COMMUNICATIONS S.A.
France
Address
160 Boulevard De Valmy
92700 Colombes
UNIVERSITY COLLEGE LONDON
United Kingdom
Address
Gower Street
WC1E 6BT London