Paper Info
Title
Low power consumption routing and spectrum allocation in optical OFDM networks
Abstract
We investigated the power consumption of the Bandwidth-Variable Optical Orthogonal Frequency Division Multiplexing (BV-OOFDM) transport networks. OFDM has been recently proposed as a modulation technique for optical networks due to its good spectral efficiency enabling elastic bandwidth transmissions compared with Wavelength Division Multiplexing (WDM). So far, the vast majority of research papers on Routing and Spectrum Allocation (RSA) problem in optical OFDM focus on increasing spectrum efficiency, however power consumption rather than spectral efficiency may eventually become a barrier to the continued growth of the Internet. In this paper, we introduce RSA problem from the viewpoint of network power consumption, which we formulate as Low Power Consumption RSA (LPC-RSA) problem. Different algorithms to solve the LPC-RSA problem are present. We start by presenting an optimal integer linear programming (ILP) RSA algorithm using decomposition method which breaks RSA into its two substituent subproblems, namely, (i) routing and (ii) spectrum allocation and solves them sequentially. For large networks, a heuristic algorithm is also proposed. Our results indicate that RSA with optimal objective of power consumption can have better power consumption and the same spectral efficiency solution compared with RSA with optimal objective of spectral efficiency, and the proposed heuristic algorithm yields close to the optimal solution in low running time.
Year
DOI
Venue
2011
10.1109/ICICS.2011.6173633
ICICS
Keywords
DocType
Volume
low power consumption lpc-rsa problem,optical orthogonal frequency division multiplexing (ofdm),power consumption,bandwidth-variable optical orthogonal frequency division multiplexing transport networks,optimal integer linear programming rsa algorithm,wavelength division multiplexing,modulation technique,optical fibre networks,ofdm modulation,integer programming,elastic bandwidth transmissions,routing and spectrum allocation problem,spectral analysis,optical modulation,linear programming,routing and spectrum allocation (rsa),optical ofdm networks,internet,optical networks,telecommunication network routing,bv-oofdm,network power consumption,spectral efficiency,algorithm design and analysis,optical fiber,spectrum,algorithm design,optical amplifiers,fiber optics,heuristic algorithm,ofdm,optical amplifier,decomposition method,fiber optic
Conference
null
Issue
ISSN
ISBN
null
null
978-1-4577-0029-3
Citations 
PageRank 
References 
0
0.34
2
Authors
3
Name
Order
Citations
PageRank
Siwei Qiang1142.18
Xuan Luo23010.84
Yaohui Jin314329.65