Exploring the Use of Two Antennas for Crosscorrelation Spectrum Sensing

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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35 Downloads (Pure)

Abstract

Abstract—Spectrum sensing is one of the key characteristics of a cognitive radio. Energy detection provides maximum flexibility by not relying on any prior knowledge, but suffers from an SNRwall due to noise uncertainty. Crosscorrelation of the outputs of two receiver paths is a technique to reduce the noise level of the total receiver, and hence improves the SNR. The reduction of the noise is limited by correlated noise originating from shared components near the antenna. In this paper we explore the use of a separate antenna for each receiver for crosscorrelation spectrum sensing. One immediate advantage is that due to the removal of the splitter, which was necessary to interface the single antenna to two receivers, the SNR improves, significantly reducing the required measurement time. A lot of the noise correlation can be removed, leading to a lower residual noise floor. The noise at each antenna will still be partially correlated due to mutual coupling, spatial noise correlation and man-made noise. We show that some signal power can be lost in the sensing process due to partial decorrelation of the signal at the two antennas. Fortunately, this seems to be a problem only in highly mobile environments, which makes the use of two-antenna crosscorrelation spectrum sensing an interesting solution towards more reliable energy detection.
Original languageUndefined
Title of host publicationIEEE Vehicular Technology Conference (VTC Fall 2011)
Place of PublicationPiscataway
PublisherIEEE
Pages1-5
Number of pages5
ISBN (Print)978-1-4244-8328-0
DOIs
Publication statusPublished - 5 Sep 2011
EventIEEE 74th Vehicular Technology Conference VTC2011-Fall - San Francisco, United States
Duration: 5 Sep 20118 Sep 2011
Conference number: 74
http://www.ieeevtc.org/vtc2011fall/

Publication series

Name
PublisherIEEE Press
ISSN (Print)1090-3038

Conference

ConferenceIEEE 74th Vehicular Technology Conference VTC2011-Fall
Abbreviated titleVTC Fall 2011
CountryUnited States
CitySan Francisco
Period5/09/118/09/11
Internet address

Keywords

  • IR-78999
  • EWI-20422
  • METIS-281526

Cite this

@inproceedings{ab77ee97d375488aa1a97b141272369d,
title = "Exploring the Use of Two Antennas for Crosscorrelation Spectrum Sensing",
abstract = "Abstract—Spectrum sensing is one of the key characteristics of a cognitive radio. Energy detection provides maximum flexibility by not relying on any prior knowledge, but suffers from an SNRwall due to noise uncertainty. Crosscorrelation of the outputs of two receiver paths is a technique to reduce the noise level of the total receiver, and hence improves the SNR. The reduction of the noise is limited by correlated noise originating from shared components near the antenna. In this paper we explore the use of a separate antenna for each receiver for crosscorrelation spectrum sensing. One immediate advantage is that due to the removal of the splitter, which was necessary to interface the single antenna to two receivers, the SNR improves, significantly reducing the required measurement time. A lot of the noise correlation can be removed, leading to a lower residual noise floor. The noise at each antenna will still be partially correlated due to mutual coupling, spatial noise correlation and man-made noise. We show that some signal power can be lost in the sensing process due to partial decorrelation of the signal at the two antennas. Fortunately, this seems to be a problem only in highly mobile environments, which makes the use of two-antenna crosscorrelation spectrum sensing an interesting solution towards more reliable energy detection.",
keywords = "IR-78999, EWI-20422, METIS-281526",
author = "{Oude Alink}, M.S. and A.R. Smeenge and Kokkeler, {Andre B.J.} and Klumperink, {Eric A.M.} and Smit, {Gerardus Johannes Maria} and Bram Nauta",
note = "10.1109/VETECF.2011.6092916",
year = "2011",
month = "9",
day = "5",
doi = "10.1109/VETECF.2011.6092916",
language = "Undefined",
isbn = "978-1-4244-8328-0",
publisher = "IEEE",
pages = "1--5",
booktitle = "IEEE Vehicular Technology Conference (VTC Fall 2011)",
address = "United States",

}

Oude Alink, MS, Smeenge, AR, Kokkeler, ABJ, Klumperink, EAM, Smit, GJM & Nauta, B 2011, Exploring the Use of Two Antennas for Crosscorrelation Spectrum Sensing. in IEEE Vehicular Technology Conference (VTC Fall 2011). IEEE, Piscataway, pp. 1-5, IEEE 74th Vehicular Technology Conference VTC2011-Fall, San Francisco, United States, 5/09/11. https://doi.org/10.1109/VETECF.2011.6092916

Exploring the Use of Two Antennas for Crosscorrelation Spectrum Sensing. / Oude Alink, M.S.; Smeenge, A.R.; Kokkeler, Andre B.J.; Klumperink, Eric A.M.; Smit, Gerardus Johannes Maria; Nauta, Bram.

IEEE Vehicular Technology Conference (VTC Fall 2011). Piscataway : IEEE, 2011. p. 1-5.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

TY - GEN

T1 - Exploring the Use of Two Antennas for Crosscorrelation Spectrum Sensing

AU - Oude Alink, M.S.

AU - Smeenge, A.R.

AU - Kokkeler, Andre B.J.

AU - Klumperink, Eric A.M.

AU - Smit, Gerardus Johannes Maria

AU - Nauta, Bram

N1 - 10.1109/VETECF.2011.6092916

PY - 2011/9/5

Y1 - 2011/9/5

N2 - Abstract—Spectrum sensing is one of the key characteristics of a cognitive radio. Energy detection provides maximum flexibility by not relying on any prior knowledge, but suffers from an SNRwall due to noise uncertainty. Crosscorrelation of the outputs of two receiver paths is a technique to reduce the noise level of the total receiver, and hence improves the SNR. The reduction of the noise is limited by correlated noise originating from shared components near the antenna. In this paper we explore the use of a separate antenna for each receiver for crosscorrelation spectrum sensing. One immediate advantage is that due to the removal of the splitter, which was necessary to interface the single antenna to two receivers, the SNR improves, significantly reducing the required measurement time. A lot of the noise correlation can be removed, leading to a lower residual noise floor. The noise at each antenna will still be partially correlated due to mutual coupling, spatial noise correlation and man-made noise. We show that some signal power can be lost in the sensing process due to partial decorrelation of the signal at the two antennas. Fortunately, this seems to be a problem only in highly mobile environments, which makes the use of two-antenna crosscorrelation spectrum sensing an interesting solution towards more reliable energy detection.

AB - Abstract—Spectrum sensing is one of the key characteristics of a cognitive radio. Energy detection provides maximum flexibility by not relying on any prior knowledge, but suffers from an SNRwall due to noise uncertainty. Crosscorrelation of the outputs of two receiver paths is a technique to reduce the noise level of the total receiver, and hence improves the SNR. The reduction of the noise is limited by correlated noise originating from shared components near the antenna. In this paper we explore the use of a separate antenna for each receiver for crosscorrelation spectrum sensing. One immediate advantage is that due to the removal of the splitter, which was necessary to interface the single antenna to two receivers, the SNR improves, significantly reducing the required measurement time. A lot of the noise correlation can be removed, leading to a lower residual noise floor. The noise at each antenna will still be partially correlated due to mutual coupling, spatial noise correlation and man-made noise. We show that some signal power can be lost in the sensing process due to partial decorrelation of the signal at the two antennas. Fortunately, this seems to be a problem only in highly mobile environments, which makes the use of two-antenna crosscorrelation spectrum sensing an interesting solution towards more reliable energy detection.

KW - IR-78999

KW - EWI-20422

KW - METIS-281526

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M3 - Conference contribution

SN - 978-1-4244-8328-0

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BT - IEEE Vehicular Technology Conference (VTC Fall 2011)

PB - IEEE

CY - Piscataway

ER -