Examining network-wide architectures and protocols to support shared use of network resources.
The Optical CDMA project explores new approaches to the design of an Optical CDMA Local Area Network. This includes
- Network protocols and management tools required for interconnected OCDMA LANs
- Optimal 2-D scrambling codes structured to take advantage of the benefits optics provides while being robust to its limitations
- OCDMA system design and implementation including a detailed experimental analysis of the effects of fiber-based impairments on an OCDMA signal and demonstrations of novel networking functions
- Device fabrication and integration of micro-ring resonator array structures, thereby enabling reconfigurable and scalable OCDMA encoders and decoders.
People
Joseph Bannister
Joe Touch
Purushotham Kamath
Collaborators
Optical communications lab at USC
Compound Semiconductor Lab at USC
MicroPhotonics Devices Group at USC (defunct)
Background
Key Technologies:
The Optical CDMA simulator allows simulation of a Local Area Network based on an Optical CDMA physical layer and an Interference Sensing Media Access Protocol.
Version 1.0
The software is available here.
The simulator documentation is available here.
Version 2.0
The software is available here.
The simulator documentation is available here.
Version 3.0
The software is available here.
The simulator documentation is available here.
Papers:
- Code-cycle modulation
- P. V. Kumar, R. Omrani, J. Touch, A. Willner, P. Saghari, “Code cycle modulation in optical code division multiple access systems,” U.S. Patent #7,616,618, Univ. of Southern California, Nov. 2005 (granted Nov. 10, 2009).
- P. Kumar, R. Omrani, J. Touch, A. Willner, P. Saghari, “Three-Fold Increase in Number of Active Users in an O-CDMA System Using Novel Code-Cycle Modulation,” Proc. OFC 2005, Mar. 2005.
- P. Kumar, R. Omrani, J. Touch, A. Willner, P. Saghari, “A Novel Optical CDMA Modulation Scheme: Code Cycle Modulation,” Proc. IEEE Globecom, Nov. 2006.
- MAC protocol, revising interference sensing and interference avoidance for OCDMA
- P. Kamath, J. Touch, J. Bannister, “The Need for Media Access Control in Optical CDMA Networks,” Proc. Infocom 2004.
- P. Kamath, J. D. Touch, J. A. Bannister, “Algorithms for Interference Sensing in Optical CDMA Networks,” Proc. IEEE International Conference on Communications (ICC), Paris, June 2004, pp. 1720-1724.
- P. Kamath, J. D. Touch, and J. A. Bannister, “Interference Avoidance in Optical CDMA Networks,” in IEEE Infocom Student Workshop, March 2005. [ .pdf ]
- P. Kumar, R. Omrani, J. Touch, A. Willner, P. Saghari, “Three-Fold Increase in Number of Active Users in an O-CDMA System Using Novel Code-Cycle Modulation,” Proc. OFC 2005, Mar. 2005.
- P. Saghari, P. Kamath, V. Arbab, M. Haghi, A. Willner, J. Bannister, J. Touch, “Experimental Demonstration of Interference Avoidance Protocol (Transmission Scheduling) for O-CDMA Networks,” Optics Express Journal, V15 N25, pp. 16442-16447, Dec. 2007. Previously: P. Saghari, P. Kamath, V. Arbab, M. Haghi, A. Willner, J. Bannister, J. Touch, “Experimental Demonstration of an Interference-Avoidance-Based Protocol for O-CDMA Networks,” Proc. OFC 2006, Mar. 2006.
- OCDMA code converter
- D. Gurkan, S. Kumar, A. Sahin, A.Willner, K. Parameswaran, M. Fejer, D. Starodubov, J. Bannister, P. Kamath, and J. Touch, “All-Optical Wavelength and Time 2-D Code Converter for Dynamically-Reconfigurable OCDMA Networks Using a PPLN Waveguide,” in Optical Fiber Communication Conference (OFC), Mar 2003, pp. 9-11. [ .pdf ]
- Network architecture for OCDMA LANs
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Local Area Network design [1] P. Kamath, J. D. Touch, and J. A. Bannister, “Optical CDMA Local Area Network Design Specification,” in ISI Technical Report ISI-TR-, April 2004.
[ .pdf ][2] P. Kamath, J. D. Touch, and J. A. Bannister, “Interference Avoidance in Optical CDMA Networks,” in IEEE Infocom Student Workshop, March 2005.
[ .pdf ][3] P. Kamath, J. D. Touch, and J. A. Bannister, “Algorithms for Interference Sensing in Optical CDMA Networks,” in IEEE International Conference on Communications (ICC), June 2004.
[ .pdf ][4] P. Kamath, J. D. Touch, and J. A. Bannister, “The Need for Media Access Control in Optical CDMA Networks,” in IEEE Infocom, March 2004.
[ .pdf ]Wide Area Network design [1] D. Gurkan, S. Kumar, A. Sahin, A.Willner, K. Parameswaran, M. Fejer, D. Starodubov, J. Bannister, P. Kamath, and J. Touch, “All-Optical Wavelength and Time 2-D Code Converter for Dynamically-Reconfigurable OCDMA Networks Using a PPLN Waveguide,” in Optical Fiber Communication Conference (OFC), Mar 2003, pp. 9-11.
[ .pdf ][2] P. Kamath, J. D. Touch, and J. A. Bannister “Optical CDMA Wide Area Network Design,” White paper,ISI Technical Report, April 2005
[ .pdf ]