Recent Advances in Optical Code Division Multiple Access

For a complete list of EECS Colloquium lectures,
please visit: http://www.eng.uci.edu/dept/eecs/colloquium

Featuring:
Paniz Ebrahimi, Ph.D.
Post Doctoral Researcher, Optical Communications Laboratory, USC

Location: McDonnell Douglas Engineering Auditorium

ABSTRACT:
Code Division Multiple Access (CDMA) networks that utilize spread spectrum techniques have been widely employed for wireless communications. Although there are significant differences between RF and optical domains, many of the benefits of RF wireless CDMA could transfer to the optical domain. These include network flexibility and physical layer security which have made optical-CDMA (O-CDMA) an active field of research.

CDMA transmission in the optical domain still has many hurdles to overcome to enable transmission of large numbers of users simultaneously, dynamically and with high data rates.Currently different methods of encoding (i.e., in time, wavelength and phase domain) are being pursued by research groups to be able to find the superior method. Novel optical elements are also being designed to enable high speed code hopping, higher spectral efficiency, and interference reduction.

In this talk, different O-CDMA methods, their challenges, and recent advancements in enabling higher throughput through the system will be discussed.

ABOUT THE SPEAKER:
Dr. Paniz Ebrahimi received her masters and PhD from the University of Southern California in 2000 and 2004 respectively. She is currently a post doctoral researcher in the Optical Communications Laboratory at the University of Southern California. Her research interests include optical-CDMA, high speed optical transmission, polarization mode dispersion and silicon photonics.