Cost and energy efficient operation of converged, reconfigurable optical wireless networks

This paper presents a converged fibre-to-the-home (FTTH) based access network architecture featuring wireless services. In order to fulfill the bandwidth demands from end users, a dynamic architecture is proposed with co-existence of LTE, WiMax and UWB technologies. Hybrid wavelength division multiplexing (WDM) and a time division multiplexing (TDM) based optical access network offer reconfigurable provision. This enhances the ability to allocate different wavelengths to different optical networking units (ONUs) on demand. In addition, two different channel routing modules (CRMs) are introduced in order to address the cost effectiveness and energy efficiency issues of the proposed network. Take-up rate adaptive-mode operation and traffic-adaptive power management are utilized to optimize the benefits of low investment cost with energy efficiency. Up to 26% power consumption reduction is achieved at the time of minimum traffic conditions while 10% consumption is achieved at the time of maximum traffic conditions. Besides, 23% energy saving can be achieved compared to conventional systems in fully operated stage

Dynamic Operation of Flexi-Grid OFDM-based Networks

Abstract: Routing in dynamic OFDM-based optical networks by simultaneous optimization of allocated spectrum and transponder reach is proven beneficial when flexi-grid technology is used regarding blocking performance and spectral efficiency when compared to standard-grid counterpart

Towards multiband optical systems

Multiband transmission is a valid option to significantly increase fiber capacity and efficiently utilize the available and deployed optical fiber infrastructure. In this contribution, we evaluate its challenges and possible implementation

Error control coding for constrained channels

SIGLEAvailable from British Library Document Supply Centre-DSC:DXN038172 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Exploiting Shared-Access Passive Optical Networks for Building Distributed Datacenters

We propose a novel optical cloud architecture where IT and Telecom resources are used interchangeably as common infrastructure. Key assets are the MAC controlled passive networks for distributed multiplexing and grooming and a node architecture integrating transmission and switching