Digital subcarrier cross-connects (DSXCs)

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Digital subcarrier cross-connects (DSXCs)

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Title: Digital subcarrier cross-connects (DSXCs)
Author(s):
Hui, Rongqing;
Huang, Wanjun, 1978;
Razo, Miguel;
Tacca, Marco, 1973;
Fumagalli, Andrea
Sponsors: Eric Jonsson School of Engineering and Computer Science. Open Networking Advanced Research (OpNeAR) Laboratory.
Date Created: 2011
Copyright Date: 2012
Format: Text
Item Type: Technical report
Keywords: Show Keywords
Description: "This research was supported in part by NSF Grant No. CNS-1111329."
Abstract: Traditional (analog) Frequency Division Multiplexing (FDM) was widely used in the pre-SONET/SDH era, to multiplex transport channels together using spectral diversity. These transport solutions were then gradually abandoned due in part to their low spectral efficiency and with the advent of Time Division Multiplexing (TDM), which lead to synchronous transmission techniques, such as SONET and SDH. Another problem of traditional FDM or Subcarrier Multiplexing (SCM) ─ being analog ─ is its susceptibility to accumulated waveform distortion and crosstalk. For these reasons FDM is not competitive in today’s transport networks. Digital signal processing continues to reach new record high rates, thus enabling Digital Subcarrier Crossconnects (DSXCs) to operate even at the high transmission rates of optical signals. In DSXC, the incoming subcarriers are switched to the outgoing subcarriers by a controlled Radio Frequency (RF) crossbar switch. The power consumption required to switch subcarriers in and out is estimated to be only a fraction of the power dissipated by current TDM and packet switching based transport network solutions. Multiple DSXCs can be combined to design Digital Subcarrier Optical Networks (DSONs) [1], which are a promising energy efficient alternative to current electronic-based transport network techniques, e.g., OTN/SONET/SDH/MPLS-TP. The DSXC’s basic functionalities and modules are introduced and discussed in this paper.
Series Title: Technical Report (University of Texas at Dallas. Department of Electrical Engineering)
Series Number: EE04-2011
Publisher: The University of Texas at Dallas
Persistent Link: http://dx.doi.org/10.1109/ICTON.2012.6253737
http://hdl.handle.net/10735.1/2683
Bibliographic Citation: Hui, R., W. Huang, M. Razo, M. Tacca and A. Fumagalli. 2011. "Digital Subcarrier Cross-connects (DSXCs)." The University of Texas at Dallas.
Terms of Use: ©2012 IEEE

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