Effect of I/Q imbalance on blind spectrum sensing for OFDMA overlay cognitive radio

Omid Semiari, Behrouz Maham, Chau Yuen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

Direct-conversion transceivers are in demand, due to their low cost implementation of analog front-ends. However, these transmitters or receivers introduce imperfections such as in-phase and quadrature-phase (I/Q) imbalances. These impairments can severely degrade the performance of cognitive radio devices that are based on orthogonal frequency division multiplexing (OFDM) multiple access schemes. In this paper, a cognitive radio system with an OFDMA primary system is considered. A new three-level hypothesis blind detector for spectrum sensing is introduced and the effect of I/Q imbalance on this detection scenario is studied. Finally, we show that the proposed detector is much less vulnerable to I/Q imbalance than conventional two-level detectors.

Original languageEnglish
Title of host publication2012 1st IEEE International Conference on Communications in China, ICCC 2012
Pages433-437
Number of pages5
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 1st IEEE International Conference on Communications in China, ICCC 2012 - Beijing, China
Duration: Aug 15 2012Aug 17 2012

Other

Other2012 1st IEEE International Conference on Communications in China, ICCC 2012
CountryChina
CityBeijing
Period8/15/128/17/12

Fingerprint

Cognitive radio
radio
Detectors
Radio systems
Transceivers
Orthogonal frequency division multiplexing
Transmitters
recipient
scenario
Defects
demand
costs
performance
Costs

Keywords

  • blind detection
  • Cognitive radio
  • fading channels
  • I/Q imbalance
  • OFDMA

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

Cite this

Semiari, O., Maham, B., & Yuen, C. (2012). Effect of I/Q imbalance on blind spectrum sensing for OFDMA overlay cognitive radio. In 2012 1st IEEE International Conference on Communications in China, ICCC 2012 (pp. 433-437). [6356921] https://doi.org/10.1109/ICCChina.2012.6356921

Effect of I/Q imbalance on blind spectrum sensing for OFDMA overlay cognitive radio. / Semiari, Omid; Maham, Behrouz; Yuen, Chau.

2012 1st IEEE International Conference on Communications in China, ICCC 2012. 2012. p. 433-437 6356921.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Semiari, O, Maham, B & Yuen, C 2012, Effect of I/Q imbalance on blind spectrum sensing for OFDMA overlay cognitive radio. in 2012 1st IEEE International Conference on Communications in China, ICCC 2012., 6356921, pp. 433-437, 2012 1st IEEE International Conference on Communications in China, ICCC 2012, Beijing, China, 8/15/12. https://doi.org/10.1109/ICCChina.2012.6356921
Semiari O, Maham B, Yuen C. Effect of I/Q imbalance on blind spectrum sensing for OFDMA overlay cognitive radio. In 2012 1st IEEE International Conference on Communications in China, ICCC 2012. 2012. p. 433-437. 6356921 https://doi.org/10.1109/ICCChina.2012.6356921
Semiari, Omid ; Maham, Behrouz ; Yuen, Chau. / Effect of I/Q imbalance on blind spectrum sensing for OFDMA overlay cognitive radio. 2012 1st IEEE International Conference on Communications in China, ICCC 2012. 2012. pp. 433-437
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