Events Calendar

Research Towards an Eco-System of Cognitive Wireless Devices

SPEAKER:
Preston Marshall,
Director, Wireless Networking,
Information Sciences Institute, Viterbi School of Engineering,
University of Southern CaliforniaABSTRACT:
Increasing demand for wireless information services, fixed, and inflexible, access to spectrum, and overtaxing of cellular and backhaul infrastructure have combined to create opportunities for radically different wireless communications architectures. These emphasize devolved network control, adaptive topologies, and dynamic interference avoidance and mitigation that are inherent in the devices and networks.While much of the research in cognitive radio has been focused on Dynamic Spectrum Access (DSA), this talk will focus on the use of DSA to address even more fundamental challenges to wireless networks, including increasing their density, transition to inherent interference tolerance as a principle for spectrum management, multiple routes and transceiver topologies, and adaptive network modes that integrate content, and content access patterns, into the consideration of network topologies.It will be shown that these adaptations also offer the opportunity to lower the cost of wireless devices, through reduction in several of the driving cost and energy considerations, such as front-end linearity, through the use of DSA to select environments. To support the generalization of this analysis, a closed-form model for the spectrum in signaling channel and front-end environments will also be described.The talk will also include a brief discussion of some of the wireless research programs at ISI.BIO:
Preston Marshall is Director for Wireless Networking at the Information Sciences Institute, where he leads research programs in wireless, networking, cognitive radio, alternative computing, and related technology research. For most of the last decade, he has been at the center of cognitive radio research, including seven years as Program Manager for the US Defense Advanced Research Projects Agency (DARPA), where he lead many of the key cognitive radio and networking programs. These programs demonstrated the viability of key aspects of cognitive radio technology, including Dynamic Spectrum Access (DSA), adaptive wireless networking, content-based networks, and low cost, DSA-based, multi-transceiver adaptive networking. He has numerous journal and conference publications, was awarded the Software Defined Radio Forum's Annual Achievement award, has been a guest editor for IEEE Proceedings, is the Executive Committee chair for the IEEE International Symposium on Dynamic Spectrum Access Networks (DYSPAN) Conference, and is the author of Quantified Analysis of Cognitive Radio and Network Performance, due for release in July 2010. Dr. Marshall holds a PhD in Electrical Engineering from Trinity College, Dublin, IE, and a BS in Electrical Engineering, and an MS in Information Sciences from Lehigh University, PA.HOST: Dr. Giuseppe Caire, caire@usc.edu

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248

Audiences: Everyone Is Invited

Contact: Mayumi Thrasher