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Outage probability and ergodic capacity of underlay cognitive radio systems with adaptive power transmission
Blekinge Institute of Technology, School of Computing.
Blekinge Institute of Technology, School of Computing.
Blekinge Institute of Technology, School of Computing.
2013 (English)Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, we consider a spectrum sharing system in which a primary transmission coexists with a secondary network composed of a secondary base station (SBS) and multiple secondary user receivers (SU-Rxs). The secondary user (SU) can access the spectrum licensed to the primary user (PU) as long as the SU does not cause any harmful interference to the PU. Among all available SU-Rxs, only the best SU-Rx with highest signal-to-interference-plus-noise ratio (SINR) is selected to receive the transmit signals from the SBS. We derive an analytical expression for the outage probability (OP) of the SU-Rx with highest SINR. Moreover, we derive an approximation of the ergodic capacity at the SU-Rx. In order to meet the requirements at the PU receiver (PU-Rx), at the same time, satisfying the quality of the SU link, an adaptive power allocation strategy is developed. The power allocation policy imposes the SU transmitter (SU-Tx) to adapt its transmit power in order to avoid harmful interference at the PU receiver (PU-Rx), with a PU predefined outage constraint.

Place, publisher, year, edition, pages
Sardinia, Italy: IEEE , 2013.
Keyword [en]
Cognitive Radio Systems, Underlay, Outage, Ergodic Capacity, Adaptive Power
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:bth-6782DOI: 10.1109/IWCMC.2013.6583657ISI: 000327357800130Local ID: oai:bth.se:forskinfoED2DA279B0115C8DC1257BD6004C8722ISBN: 978-1-4673-2479-3 (print)OAI: oai:DiVA.org:bth-6782DiVA: diva2:834326
Conference
International Wireless Communications and Mobile Computing Conference
Available from: 2014-01-07 Created: 2013-08-29 Last updated: 2016-09-09Bibliographically approved

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Kabiri, CharlesZepernick, Hans-JürgenTran, Hung

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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More styles
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  • de-DE
  • en-GB
  • en-US
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  • Other locale
More languages
Output format
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