A dual-mode, correlation-based spectrum sensing receiver for TV white space applications achieving −104dBm sensitivity

Author

Xiao Xiao ; Nikolic, B.

Author_Institution

Univ. of California, Berkeley, Berkeley, CA, USA

fYear

2014

fDate

1-3 June 2014

Firstpage

317

Lastpage

320

Abstract

A spectrum-sensing receiver targeted at the UHF TV band is implemented in 65 nm CMOS. Using known characteristics of the target signal, an efficient architecture employing subsampling downconversion and digital-analog hybrid correlation is implemented to achieve high sensitivity with low power. Fine and coarse detection modes enable both rapid sensing and the detection of very weak signals. For a 6 MHz TV band channel, the system achieves -91 dBm sensitivity with rapid energy detection, -104 dBm sensitivity with correlation, and 84 dB of full-scale dynamic range. The chip consumes only 28 mW of power.

Keywords

CMOS integrated circuits; UHF integrated circuits; digital-analogue conversion; low-power electronics; radio spectrum management; signal detection; television receivers; TV white space applications; UHF TV band; coarse detection modes; digital-analog hybrid correlation; dual-mode correlation-based spectrum sensing receiver; frequency 6 MHz; rapid energy detection; size 65 nm; subsampling downconversion; target signal characteristics; weak signal detection; Band-pass filters; Baseband; Correlation; Noise; Radio frequency; Sensitivity; Sensors; Cognitive radio; TV white space; correlation; energy detection; sensitivity; spectrum sensing;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits Symposium, 2014 IEEE

Conference_Location

Tampa, FL

ISSN

1529-2517

Print_ISBN

978-1-4799-3862-9

Type

conf

DOI

10.1109/RFIC.2014.6851730

Filename

6851730