<<A Fully-Integrated CMOS Receiver with Multi-Resolution Spectrum Sensing (MRSS) Functionality for Cognitive Radio Applications >>
* 일 시 : 2008년 12월 22일 월요일 17:00~18:00
* 장 소 : 서울대학교 반도체공동연구소 설계연구관 도연홀
* 연 사 : Jongmin Park (Ph.D. student / Georgia Institute of Technology)
Fast and accurate spectrum sensing is one of the most important functions in a cognitive radio (CR) seeking to use the licensed but unoccupied spectrum segments. In this paper, we present a fully integrated CMOS receiver with a CR spectrum sensing capability in the UHF band. We propose multi-resolution spectrum sensing (MRSS), which is a digitally-assisted analog energy detection technique. Without using bulky analog filters, detection bandwidth can be flexibly controlled by correlating the received analog signals with window signal generated by built-in digital window generator. The integrated chip has been fabricated in a standard 0.18um CMOS technology, and has achieved 32 dB of detection dynamic range with minimum detection sensitivity of 74 dBm by using a 100-kHz cos4 window.
Jongmin Park received the B.S. degree (summa cum laude) in electrical engineering from Seoul National University, Seoul, Korea, in 2005, and the M.S. degree in electrical and computer engineering from Georgia Institute of Technology, Atlanta, in 2007. He is currently working toward the Ph.D. degree in electrical and computer engineering at Georgia Institute of Technology, Atlanta. In the summers of 2007 and 2008, he was an intern with Qualcomm, San Diego, CA, where he worked on the design of power detector and the advanced transmitter architecture. His current research interests include RF and analog circuit design for cognitive radio applications.
담당교수 : 전기컴퓨터공학부 김수환 (문의 : 김은영, Tel. 880-1306)