Paper Info
Title
A Highly Integrated 400–800 MHz Spectrum Sensing System Based on Envelope Detection
Abstract
A spectrum sensing system is designed and implemented using 0.18 μm CMOS technology for cognitive radio applications. This system consists of a low noise amplifier (LNA), a mixer, a low-pass filter (LPF), a rectifier, a voltage comparator, a digital control unit (DCU) and a frequency synthesizer. Based on envelope detection, spectrum sensing is performed from 401.569 to 802.745 MHz, where the frequency information and signal strength of the received signal can be presented by the 10-bit digital frequency output and 5-bit signal strength index, respectively. The system achieves the sensing time of 0.164 sec and sensing sensitivity of -75 dBm with the frequency resolution of 392.2 kHz.
Year
DOI
Venue
2020
10.1109/TCSII.2020.2997948
IEEE Transactions on Circuits and Systems II: Express Briefs
Keywords
DocType
Volume
Cognitive radios (CRs),frequency synthesizers,receivers,software-defined radios (SDRs),spectrum sensing
Journal
67
Issue
ISSN
Citations 
12
1549-7747
0
PageRank 
References 
Authors
0.34
0
2
Name
Order
Citations
PageRank
Ming-Yu Yen121.45
Hsiao-Chin Chen25014.74