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김학선

Kim, Hak Sun
Internet of Things System Lab.
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A Fully Integrated UHF-Band CMOS Receiver With Multi-Resolution Spectrum Sensing (MRSS) Functionality for IEEE 802.22 Cognitive Radio Applications

Author(s)
Park, JongminSong, TaejoongHur, JoonhoiLee, Sang MinChoi, JungkiKim, KihongLim, KyutaeLee, Chang-HoKim, HaksunLaskar, Joy
Issued Date
2009-01
DOI
10.1109/JSSC.2008.2007435
URI
https://scholarworks.unist.ac.kr/handle/201301/21540
Fulltext
http://ieeexplore.ieee.org/document/4735557/
Citation
IEEE JOURNAL OF SOLID-STATE CIRCUITS, v.44, no.1, pp.258 - 268
Abstract
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 0.18-mu mm CMOS technology, and has achieved 32 dB of detection dynamic range with minimum detection sensitivity of -74 dBm by using a 100-kHz cos(4) window.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
ISSN
0018-9200
Keyword (Author)
Cognitive radio (CR)digitally-assisted analog circuitenergy detectionmulti-resolution spectrum sensing (MRSS)spectrum sensing

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