Quantifying Spectrum, Cost, and Energy Efficiency in Fixed-Grid and Flex-Grid Networks [Invited]

被引：59

作者：

Palkopoulou, E. ^{[1
]}

Angelou, M. ^{[1
,2
]}

Klonidis, D. ^{[1
]}

Christodoulopoulos, K. ^{[3
]}

Klekamp, A. ^{[4
]}

Buchali, F. ^{[4
]}

Varvarigos, E. ^{[5
]}

Tomkos, I. ^{[1
]}

机构：

[1] Athens Informat Technol Ctr, Athens 19002, Greece

[2] Univ Politecn Cataluna, ES-08034 Barcelona, Catalunya, Spain

[3] Trinity Coll Dublin, Sch Comp Sci & Stat, Dublin, Ireland

[4] Alcatel Lucent Bell Labs, D-70435 Stuttgart, Germany

[5] Univ Patras, Comp Engn & Informat Dept, Commun Networks Lab, GR-26110 Patras, Greece

来源：

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING | 2012年 / 4卷 / 11期

关键词：

Cost analysis; Energy efficiency; Flexible optical networking; Optical OFDM; ALLOCATION;

D O I：

10.1364/JOCN.4.000B42

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Single and multi-carrier networks offering channel rates up to 400 Gb/s are evaluated under realistic reach parameters. It is found that efficient spectrum utilization and fine bit-rate granularity are essential to achieve cost and energy efficiency. Additionally, the break-even cost of flexible orthogonal frequency division multiplexing transponders is examined under different settings. The break-even cost of a flexible transponder corresponds to the cost value for which the total cost of the network is equal to that of the related single-line-rate network. The impact of the traffic load, the additional cost required for flex-grid optical cross connects, the cost of spectrum, as well as the cost of fixed-grid transponders is examined.

引用

页码：B42 / B51

页数：10

共 18 条

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