Shiwen Mao - Research - An Exploratory Study Toward Robust Free Space Optical Networks

Project Description

An Exploratory Study Toward Robust Free Space Optical Networks

Free Space Optics (FSO) provide a cost-effective, license-free, high-bandwidth and long-range solution to meet the escalating demand for wireless network capacity and scalability. This project aims to develop technologies for robust FSO networks from the network and cross-layer optimization perspective. Various network dynamics will be addressed with the following approaches. (i) For dynamics at large timescales, network planning and topology optimization will be investigated based on the concept of algebraic connectivity. (ii) For mid-timescale dynamics, effective load balancing and adaptive multipath routing will be developed. (iii) For small timescale dynamics, channel estimation will be investigated to enable rate adaptation and optimal receiver design. Wavelength diversity will also be exploited for the diversity-multiplexing tradeoff. If successful, this project will enable scalable wireless access networks with multi-gigabit rates, to accommodate the predicted increase in wireless data. Project outcomes will be disseminated and incorporated into the Auburn University Wireless Engineering curriculum.

January 1, 2012 ~ December 31, 2013

Project Team

Shiwen Mao
Prathima Agrawal
Hui Zhou (graduated May 2014)
In-Keun Son (graduated Dec. 2010)

Related Publications (journal & magazine)

I.-K. Son and S. Mao, “A survey of free space optical networks,” Elsevier Digital Communications and Networks, vol.3, no.2, pp.67-77, Apr. 2017. DOI: 10.1016/j.dcan.2016.11.002.
H. Zhou, S. Mao, and P. Agrawal, “Optical power allocation for adaptive transmissions in wavelength-division multiplexing free space optical networks,” Elsevier Digital Communications and Networks Journal, vol.1, no.3, pp.171-180, Aug. 2015. DOI: 10.1016/j.dcan.2015.09.001.
H. Zhou, S. Mao, and P. Agrawal, “On relay selection and power allocation in cooperative free space optical networks,” Springer Photonic Network Communications Journal (PNET), vol.29, no.1, pp.1-11, Jan. 2015. DOI: 10.1007/s11107-014-0465-z.
I.-K. Son, S. Mao, and S.K. Das, “On the design and optimization of a free space optical access network,” Elsevier Optical Switching and Networking, vol.11, Part.A, pp.29-43, Jan. 2014. DOI: 10.1016/j.osn.2013.08.004. (Runner-up for the 2013 Fabio Neri Best Paper Award)
I.-K. Son, S. Mao, and S.K. Das, “On joint topology design and load balancing in FSO networks,” Elsevier Optical Switching and Networking, Special Issue on Optical Network Architectures and Applications, vol.11, Part A, pp.92-104, Jan. 2014. DOI: 10.1016/j.osn.2013.08.001.

Related Publications (conference)

H. Zhou, S. Mao, and P. Agrawal, “Optical power allocation for adaptive WDM transmission in Free Space Optical networks,” in Proc. IEEE WCNC 2014, Istanbul, Turkey, Apr. 2014, pp.2677-2682.
R. Ashtari, S. Mao, and M.C. Hamilton, “A low-cost ultra-violet V2I identification system for vehicular theft recovery,” in Proc. 2013 IEEE International Conference on Connected Vehicles & Expo (ICCVE’13), Las Vegas, NV, Dec. 2013, pp.785-790.
H. Zhou, D. Hu, S. Mao, and P. Agrawal, “Joint relay selection and power allocation in cooperative FSO networks,” in Proc. IEEE GLOBECOM 2013, pp.2418-2423, Atlanta, GA, December 2013.
H. Zhou, A. Babaei, S. Mao, and P. Agrawal, “Algebraic connectivity of degree constrained spanning trees for FSO networks,” in Proc. IEEE ICC 2013, pp.5991-5996, Budapest, Hungary, June 2013. (The IEEE ICC 2013 Best Paper Award)
I.-K. Son and S. Mao, “A reformulation-linearization technique-based approach to joint topology design and load balancing in FSO networks,” in Proc. IEEE GLOBECOM 2010, pp.1-6, Miami, FL, December 2010.
I.-K. Son and S. Mao, “Fast heuristic algorithm for joint topology design and load balancing in FSO networks,” in Proc. IEEE GLOBECOM 2010, pp.1-5, Miami, FL, December 2010.
I.-K. Son, S. Kim, and S. Mao, “Building robust spanning trees for free space optical networks,” in Proc. IEEE MILCOM 2010, pp.1397-1402, San Jose, CA, October/November 2010.

Presentations and Posters

R. Ashtari, “A low-cost ultra-violet V2I identification system for vehicular theft recovery,” in the Poster and Demo Session of the 2013 International Conference on Connected Vehicles & Expo (ICCVE’13), Las Vegas, NV, Dec. 6, 2013.
H. Zhou, D. Hu, S. Mao, and P. Agrawal, "Joint relay selection and power allocation in cooperative FSO net-works," poster presented at BWAC Research Review, Auburn, AL, Oct. 2013.
S. Mao, "On the design and optimization of Gigabit wireless networks," invited talk, School of Electronic and Information Engineering, Bejing Jiaotong University, Beijing, China, May 24, 2012.
S. Mao, "On Gigabit wireless networks," invited talk, Wireless and Mobile Communication Technology R&D Center, Tsinghua University, Beijing, China, May 23, 2012.
H. Zou, A. Babaei, P. Agrawal, and S. Mao, "Algebraic connectivity of degree constrained spanning trees for FSO networks," poster presented at WICAT Research Review, The University of Virginia, Charlottesville, VA, Nov. 2012.

We acknowledge the generous support from our sponsor

National Science Foundation

This work is supported in part by the U.S. National Science Foundation (NSF) under Grant CNS-1145446. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the foundation.