Image and video transmission in cognitive radio systems under sensing uncertainty

Chuang Ye, Gozde Ozcan, M. Cenk Gursoy, Senem Velipasalar

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

4 Scopus citations

Abstract

This paper studies the performance of hierarchical-modulation-based image and video transmission in cognitive radio systems with imperfect channel sensing results under constraints on both transmit and interference power. Data intended for transmission is first compressed via source coding techniques and then divided into two priority classes, namely high priority (HP) data and low priority (LP) data, by taking into consideration the unequal importance of bits in the output codestream. After dividing the compressed data into packets of equal size, turbo coding is applied. Finally, the resulting packets are modulated using hierarchical quadrature amplitude modulation (HQAM). In this setting, closed-form bit error probability expressions for HP data and LP data are derived over Nakagami-m fading channels in the presence of sensing errors. Subsequently, the effects of probabilities of detection and false alarm on error rate performance of cognitive transmissions are evaluated. In addition, tradeoffs between the number of retransmissions and peak signal-to-noise ratio (PSNR) quality are analyzed numerically. Moreover, performance comparisons of multimedia transmission with conventional QAM and hierarchical QAM are carried out in terms of the received data quality and number of retransmissions.

Original languageEnglish (US)
Title of host publication2015 IEEE Wireless Communications and Networking Conference, WCNC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages417-422
Number of pages6
ISBN (Electronic)9781479984060
DOIs
StatePublished - Jun 17 2015
Event2015 IEEE Wireless Communications and Networking Conference, WCNC 2015 - New Orleans, United States
Duration: Mar 9 2015Mar 12 2015

Publication series

Name2015 IEEE Wireless Communications and Networking Conference, WCNC 2015

Other

Other2015 IEEE Wireless Communications and Networking Conference, WCNC 2015
CountryUnited States
CityNew Orleans
Period3/9/153/12/15

Keywords

  • Bit error probability
  • H.264/MPEG-4
  • JPEG2000
  • Nakagami-m fading channel
  • channel sensing
  • cognitive radio
  • hierarchical modulation
  • interference power constraint
  • peak signal-to-noise ratio
  • probability of detection
  • probability of false alarm
  • turbo coding
  • unequal error protection

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications
  • Computer Science Applications
  • Signal Processing

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  • Cite this

    Ye, C., Ozcan, G., Gursoy, M. C., & Velipasalar, S. (2015). Image and video transmission in cognitive radio systems under sensing uncertainty. In 2015 IEEE Wireless Communications and Networking Conference, WCNC 2015 (pp. 417-422). [7127506] (2015 IEEE Wireless Communications and Networking Conference, WCNC 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WCNC.2015.7127506