Experimental analysis of energy detection for PSK and QAM signals: Indoor measurements

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

Abstract

Spectrum sensing is a feature of cognitive radio systems which is proposed to improve spectral utilization of wireless signals. One of the sensing method is the noncoherent energy detector, and even though it is computationally more effective than coherent methods such as matched filtering, it has critical drawbacks e.g., requirement of certain signal to noise ratio and number of samples. Moreover, type of digital modulation employed also affects the performance of the energy detectors. Therefore, in this paper, the performance of the energy detectors are investigated for phase shift keying and quadrature amplitude modulated signals. Instead of false alarm and missed detection analysis, probability mass function vs. energy detection statistics are introduced to better understand the effect of modulation type, order and wireless channel. A measurement setup is developed also considering line of sight and non-line of sight conditions and signals are constructed, transmitted and recorded based on the signal model provided. The measurement results indicate that modulation type and order have significant impact on detection statistics.

Original languageEnglish
Title of host publicationRSW 2013 - 2013 IEEE Radio and Wireless Symposium - RWW 2013
Pages1-3
Number of pages3
DOIs
Publication statusPublished - 1 May 2013
Event2013 IEEE Radio and Wireless Symposium, RSW 2013 - 2013 7th IEEE Radio and Wireless Week, RWW 2013 - Austin, TX, United States
Duration: 20 Jan 201323 Jan 2013

Publication series

NameIEEE Radio and Wireless Symposium, RWS
ISSN (Print)2164-2958
ISSN (Electronic)2164-2974

Other

Other2013 IEEE Radio and Wireless Symposium, RSW 2013 - 2013 7th IEEE Radio and Wireless Week, RWW 2013
CountryUnited States
CityAustin, TX
Period20/1/1323/1/13

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Keywords

  • energy detector
  • fading
  • line of sight
  • modulation
  • non-line of sight

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Communication

Cite this

Ekti, A. R., Serpedin, E., & Qaraqe, K. A. (2013). Experimental analysis of energy detection for PSK and QAM signals: Indoor measurements. In RSW 2013 - 2013 IEEE Radio and Wireless Symposium - RWW 2013 (pp. 1-3). [6486621] (IEEE Radio and Wireless Symposium, RWS). https://doi.org/10.1109/RWS.2013.6486621