Multi-spectrum and transmit-antenna switched diversity schemes for spectrum sharing systems: A performance analysis

Mostafa Sayed, Mohamed Abdallah, Mohamed Slim Alouini, Khalid A. Qaraqe

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

Abstract

In spectrum sharing systems, a secondary user (SU) is allowed to share the spectrum with a primary licensed user under the condition that the interference at the the primary user receiver (PU-Rx) is below a predetermined threshold. Joint primary spectrum and transmit antenna selection diversity schemes can be utilized as an efficient way to meet the quality of service (QoS) demands of the SUs while satisfying the interference constraint. In this paper, we consider a secondary link comprised of a secondary transmitter (SU-Tx) equipped with multiple antennas and a single-antenna secondary receiver (SU-Rx) sharing the same spectrum with a number of primary users (PUs) operating at distinct spectra. We present a performance analysis for two primary spectrum and transmit antenna switched selection schemes with different amount of feedback requirements. In particular, assuming Rayleigh fading and BPSK transmission, we derive approximate BER expressions for the presented schemes. For the sake of comparison, we also derive a closed-form BER expression for the optimal selection scheme that selects the best pair in terms of the SU-Rx signal-to-noise ratio (SNR) which has the disadvantage of high feedback requirements. Finally, our results are verified with numerical simulations.

Original languageEnglish
Title of host publication2012 IEEE Globecom Workshops, GC Wkshps 2012
Pages168-173
Number of pages6
DOIs
Publication statusPublished - 1 Dec 2012
Event2012 IEEE Globecom Workshops, GC Wkshps 2012 - Anaheim, CA, United States
Duration: 3 Dec 20127 Dec 2012

Publication series

Name2012 IEEE Globecom Workshops, GC Wkshps 2012

Other

Other2012 IEEE Globecom Workshops, GC Wkshps 2012
CountryUnited States
CityAnaheim, CA
Period3/12/127/12/12

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Keywords

  • Transmit selection diversity
  • spectrum sharing
  • transmit switched diversity

ASJC Scopus subject areas

  • Computer Networks and Communications

Cite this

Sayed, M., Abdallah, M., Alouini, M. S., & Qaraqe, K. A. (2012). Multi-spectrum and transmit-antenna switched diversity schemes for spectrum sharing systems: A performance analysis. In 2012 IEEE Globecom Workshops, GC Wkshps 2012 (pp. 168-173). [6477564] (2012 IEEE Globecom Workshops, GC Wkshps 2012). https://doi.org/10.1109/GLOCOMW.2012.6477564