Maximizing available spectrum for cognitive radios*
Thurs., Nov 19, 2009
2:00 - 3:00 PM
400 Cory (Hughes room)
2:00 - 3:00 PM
400 Cory (Hughes room)
Cognitive radios have been proposed to address the dual problems of spectrum under-utilization and the need for vast swathes of new spectrum in the 0-3GHz band for wireless data services. Previous research in the area of cognitive radios has concentrated on signal processing innovations for improved detection sensitivity. However the SP perspective alone is unable to recover much unused spectrum. In this talk we focus on two fronts to maximize the recovery of unused spectrum. Firstly, we take a spatial perspective on spectrum usage. Secondly, we go beyond the detection sensitivity metric and look at advanced algorithms (namely, Cooperative sensing and Multiband sensing) to recover spectrum holes. These algorithms are motivated by measurements we made in the Digital TV bands at various locations in Berkeley.
Bio:
Shridhar Mubaraq Mishra received his B.A.Sc. and M.Phil. degrees in computer engineering from Nanyang Technological University, Singapore, in 1998 and 1999, respectively. He is currently pursuing the Ph.D. degree in electrical engineering at the University of California (UC), Berkeley, He works with Prof. R. W. Brodersen and Prof. A. Sahai at the Berkeley Wireless Research Center. From 1999 to 2003, he was a Member of Technical Staff with the Microelectronics Design Center, Infineon Technologies, Singapore. During this time he worked on the concept and design of reconfigurable ethernet switches for access applications. He has been involved in the area of dynamic spectrum sharing since 2003. The emphasis of his research has been on cooperation and multiband sensing. In 2006, he held an internship position with Wionics Research-Realtek Semiconductors, Irvine, CA, where he worked on detect-and-avoid technology to enable ultra-wide-band systems to coexist with WiMax.
Bio:
Shridhar Mubaraq Mishra received his B.A.Sc. and M.Phil. degrees in computer engineering from Nanyang Technological University, Singapore, in 1998 and 1999, respectively. He is currently pursuing the Ph.D. degree in electrical engineering at the University of California (UC), Berkeley, He works with Prof. R. W. Brodersen and Prof. A. Sahai at the Berkeley Wireless Research Center. From 1999 to 2003, he was a Member of Technical Staff with the Microelectronics Design Center, Infineon Technologies, Singapore. During this time he worked on the concept and design of reconfigurable ethernet switches for access applications. He has been involved in the area of dynamic spectrum sharing since 2003. The emphasis of his research has been on cooperation and multiband sensing. In 2006, he held an internship position with Wionics Research-Realtek Semiconductors, Irvine, CA, where he worked on detect-and-avoid technology to enable ultra-wide-band systems to coexist with WiMax.
UC Berkeley Networking
Kristen Woyach and Pulkit Grover Last Modification Date: Wednesday, August 19, 2009
Kristen Woyach and Pulkit Grover Last Modification Date: Wednesday, August 19, 2009