TY - GEN
T1 - Benefits of sub-band virtual concatenation (VCAT) in CO-OFDM optical networks
AU - Shen, Gangxiang
AU - Cai, Anliang
AU - Peng, Limei
PY - 2012
Y1 - 2012
N2 - Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) technology is now prevailing for its advantage of high spectrum efficiency. For the CO-OFDM-based networks, most of the existing studies are based on the assumption that all the sub-bands of a CO-OFDM optical channel are carried on the same route. For better network capacity utilization, the technique of Virtual Concatenation (VCAT) in the traditional Optical Transport Networks (OTN) can be applied to a CO-OFDM optical channel that is made up of multiple sub-bands. In this paper, we study the benefits of sub-band virtual concatenation for the CO-OFDM optical networks. We develop analytical models for a single node pair and a mesh network. Analytical results indicate that virtual concatenation can significantly improve the blocking performance compared to the case of without virtual concatenation, and moreover, such an improvement becomes more significant when the bandwidths of multiple VCAT sub-bands are allocated more evenly.
AB - Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) technology is now prevailing for its advantage of high spectrum efficiency. For the CO-OFDM-based networks, most of the existing studies are based on the assumption that all the sub-bands of a CO-OFDM optical channel are carried on the same route. For better network capacity utilization, the technique of Virtual Concatenation (VCAT) in the traditional Optical Transport Networks (OTN) can be applied to a CO-OFDM optical channel that is made up of multiple sub-bands. In this paper, we study the benefits of sub-band virtual concatenation for the CO-OFDM optical networks. We develop analytical models for a single node pair and a mesh network. Analytical results indicate that virtual concatenation can significantly improve the blocking performance compared to the case of without virtual concatenation, and moreover, such an improvement becomes more significant when the bandwidths of multiple VCAT sub-bands are allocated more evenly.
KW - CO-OFDM
KW - lightpath blocking performance
KW - spectrum conversion
KW - sub-band virtual concatenation
UR - http://www.scopus.com/inward/record.url?scp=84866975844&partnerID=8YFLogxK
U2 - 10.1109/ICTON.2012.6254476
DO - 10.1109/ICTON.2012.6254476
M3 - Conference contribution
AN - SCOPUS:84866975844
SN - 9781467322270
T3 - International Conference on Transparent Optical Networks
BT - ICTON 2012 - 14th International Conference on Transparent Optical Networks
T2 - 14th International Conference on Transparent Optical Networks, ICTON 2012
Y2 - 2 July 2012 through 5 July 2012
ER -