Spectrum sensing over frequency-selective fading channel with tap and spatial correlations

Yifei Huang*, Xiaojing Huang

*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

Reliable spectrum sensing should be able to operate under realistic wireless environments such as multipath and fading. Based on the optimal spectrum sensing with multiple receiver antennas over multipath channels, this paper presents further studies into two more practical detection methods, the modified energy detection (MED) and the equal gain detection (EGD), over frequency-selective fading channels, with focus on the impact of multipath tap correlation on the sensing performance. Both simulation and analytical results are provided. It is verified that utilizing multipath propagation enhances the detection probability of the EGD, which approaches that of the optimal detection. The EGD also demonstrates better performance than the MED and the conventional generalized likelihood ratio test. The tap correlation can have either constructive or destructive effect to the spectrum sensing system depending on how well the tap correlation matches the source signal's temporal correlation, whereas the spatial correlation always degrades the detection performance.

Original languageEnglish
Title of host publication2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC)
Subtitle of host publicationproceedings
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages2143-2148
Number of pages6
ISBN (Electronic)9781467325691
ISBN (Print)9781467325660
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC) - Sydney, Australia
Duration: 9 Sep 201212 Sep 2012
Conference number: 23rd

Other

Other2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC)
CountryAustralia
CitySydney
Period9/09/1212/09/12

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