Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Power Allocation for Multi-Hop Decode-and-Forward Cognitive Radio Networks with Line Topology
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. (Communication Theory)
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. (Communication Theory)ORCID iD: 0000-0002-5407-0835
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. (Communication Theory)ORCID iD: 0000-0001-7182-9543
2012 (English)In: 2012 Swedish Communication Technologies Workshop, Swe-CTW 2012, Lund, 2012, 7-12 p.Conference paper, Published paper (Refereed)
Abstract [en]

In the present paper we study the power allocation for multi-hop underlay cognitive radio networks (CRNs) with line topology. That is, we consider a scenario, where a CRN operates in parallel to the primary network provided that the interference created to the primary network is limited by an acceptable threshold. The CNR is assumed to be a multi-hop relay network and hence before reaching the destination information from the source node may pass several hops from node to node. At each hop, the information is decoded and forwarded to the following node. It is further assumed that transmissions can be overheard by neighboring nodes, thereby creating interference. The power at each node can be optimally adjusted so that the end-to-end throughput of the CRN is maximized, while the constraint on interference towards the primary network is satisfied. In this paper, we show that for line CRNs the optimal power allocation is achieved when capacities of all intermediate links are equal and the interference constraint of the most disturbed primary user is fulfilled with equality. To simplify the computation of the optimal power allocation we derive two approximate solutions as well as several distributed power allocation schemes. The numerical results illustrate the interplay between the proposed solutions and the optimal power allocation.

Place, publisher, year, edition, pages
Lund, 2012. 7-12 p.
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-108225DOI: 10.1109/Swe-CTW.2012.6376291Scopus ID: 2-s2.0-84871891548ISBN: 978-146734763-1 (print)OAI: oai:DiVA.org:kth-108225DiVA: diva2:579306
Conference
2012 Swedish Communication Technologies Workshop, Swe-CTW 2012;Lund;24 October 2012 through 26 October 2012
Funder
Swedish Research CouncilICT - The Next Generation
Note

QC 20130111

Available from: 2012-12-19 Created: 2012-12-19 Last updated: 2013-04-11Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Authority records BETA

Xiao, MingRasmussen, Lars

Search in DiVA

By author/editor
Girnyk, MaksymXiao, MingRasmussen, Lars
By organisation
Communication TheoryACCESS Linnaeus Centre
Telecommunications

Search outside of DiVA

GoogleGoogle Scholar

doi
isbn
urn-nbn

Altmetric score

doi
isbn
urn-nbn
Total: 57 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf