Improving harmonic rejection for spectrum sensing using crosscorrelation

M.S. Oude Alink; Andre B.J. Kokkeler; Eric A.M. Klumperink; Z. Ru; W. Cheng; Bram Nauta

doi:10.1109/ESSCIRC.2012.6341329

Improving harmonic rejection for spectrum sensing using crosscorrelation

M.S. Oude Alink, Andre B.J. Kokkeler, Eric A.M. Klumperink, Z. Ru, W. Cheng, Bram Nauta

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

7 Citations (Scopus)

214 Downloads (Pure)

Abstract

Harmonic downmixing may cause a spectrum sensing device to erroneously flag parts of the spectrum as occupied. Receivers employing harmonic rejection (HR) rarely obtain more than 60 dB of HR, which may not be enough for spectrum sensing for dynamic spectrum access. We improve HR by employing two RF-receivers, integrated in a single 65nm CMOS IC, and using a small offset in their LO-frequencies. The offset is corrected in the digital baseband, after which the final receiver outputs are crosscorrelated. Our measurements show that the HR can be significantly improved without calibration or time penalty, even for high initial HR, but that the improvement is limited by crosstalk between the receivers.

Original language	English
Title of host publication	38th European Solid-State Circuit Conference, ESSCIRC 2012
Place of Publication	Piscataway
Publisher	IEEE
Pages	361-364
Number of pages	4
ISBN (Print)	978-1-4673-2212-6
DOIs	https://doi.org/10.1109/ESSCIRC.2012.6341329
Publication status	Published - 2012
Event	38th European Solid-State Circuit Conference, ESSCIRC 2012 - Bordeaux, France Duration: 17 Sept 2012 → 21 Sept 2012 Conference number: 38

Conference

Conference	38th European Solid-State Circuit Conference, ESSCIRC 2012
Abbreviated title	ESSCIRC
Country/Territory	France
City	Bordeaux
Period	17/09/12 → 21/09/12

Keywords

EWI-22457
IR-83399
METIS-296135

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10.1109/ESSCIRC.2012.6341329

ESSCIRC_2012_Oude_AlinkAccepted author version, 872 KB

Cite this

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title = "Improving harmonic rejection for spectrum sensing using crosscorrelation",

abstract = "Harmonic downmixing may cause a spectrum sensing device to erroneously flag parts of the spectrum as occupied. Receivers employing harmonic rejection (HR) rarely obtain more than 60 dB of HR, which may not be enough for spectrum sensing for dynamic spectrum access. We improve HR by employing two RF-receivers, integrated in a single 65nm CMOS IC, and using a small offset in their LO-frequencies. The offset is corrected in the digital baseband, after which the final receiver outputs are crosscorrelated. Our measurements show that the HR can be significantly improved without calibration or time penalty, even for high initial HR, but that the improvement is limited by crosstalk between the receivers.",

keywords = "EWI-22457, IR-83399, METIS-296135",

author = "{Oude Alink}, M.S. and Kokkeler, {Andre B.J.} and Klumperink, {Eric A.M.} and Z. Ru and W. Cheng and Bram Nauta",

year = "2012",

doi = "10.1109/ESSCIRC.2012.6341329",

language = "English",

isbn = "978-1-4673-2212-6",

pages = "361--364",

booktitle = "38th European Solid-State Circuit Conference, ESSCIRC 2012",

publisher = "IEEE",

address = "United States",

note = "38th European Solid-State Circuit Conference, ESSCIRC 2012, ESSCIRC ; Conference date: 17-09-2012 Through 21-09-2012",

}

Oude Alink, MS , Kokkeler, ABJ , Klumperink, EAM, Ru, Z, Cheng, W & Nauta, B 2012, Improving harmonic rejection for spectrum sensing using crosscorrelation. in 38th European Solid-State Circuit Conference, ESSCIRC 2012. IEEE, Piscataway, pp. 361-364, 38th European Solid-State Circuit Conference, ESSCIRC 2012, Bordeaux, France, 17/09/12. https://doi.org/10.1109/ESSCIRC.2012.6341329

TY - GEN

T1 - Improving harmonic rejection for spectrum sensing using crosscorrelation

AU - Oude Alink, M.S.

AU - Kokkeler, Andre B.J.

AU - Klumperink, Eric A.M.

AU - Ru, Z.

AU - Cheng, W.

AU - Nauta, Bram

N1 - Conference code: 38

PY - 2012

Y1 - 2012

N2 - Harmonic downmixing may cause a spectrum sensing device to erroneously flag parts of the spectrum as occupied. Receivers employing harmonic rejection (HR) rarely obtain more than 60 dB of HR, which may not be enough for spectrum sensing for dynamic spectrum access. We improve HR by employing two RF-receivers, integrated in a single 65nm CMOS IC, and using a small offset in their LO-frequencies. The offset is corrected in the digital baseband, after which the final receiver outputs are crosscorrelated. Our measurements show that the HR can be significantly improved without calibration or time penalty, even for high initial HR, but that the improvement is limited by crosstalk between the receivers.

AB - Harmonic downmixing may cause a spectrum sensing device to erroneously flag parts of the spectrum as occupied. Receivers employing harmonic rejection (HR) rarely obtain more than 60 dB of HR, which may not be enough for spectrum sensing for dynamic spectrum access. We improve HR by employing two RF-receivers, integrated in a single 65nm CMOS IC, and using a small offset in their LO-frequencies. The offset is corrected in the digital baseband, after which the final receiver outputs are crosscorrelated. Our measurements show that the HR can be significantly improved without calibration or time penalty, even for high initial HR, but that the improvement is limited by crosstalk between the receivers.

KW - EWI-22457

KW - IR-83399

KW - METIS-296135

U2 - 10.1109/ESSCIRC.2012.6341329

DO - 10.1109/ESSCIRC.2012.6341329

M3 - Conference contribution

SN - 978-1-4673-2212-6

SP - 361

EP - 364

BT - 38th European Solid-State Circuit Conference, ESSCIRC 2012

PB - IEEE

CY - Piscataway

T2 - 38th European Solid-State Circuit Conference, ESSCIRC 2012

Y2 - 17 September 2012 through 21 September 2012

ER -

Improving harmonic rejection for spectrum sensing using crosscorrelation

Abstract

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Keywords

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