Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Secure Broadcasting in Cooperative Cognitive Radio Networks
KTH, Skolan för elektro- och systemteknik (EES), Kommunikationsteori. KTH, Skolan för elektro- och systemteknik (EES), Centra, ACCESS Linnaeus Centre.
KTH, Skolan för elektro- och systemteknik (EES), Kommunikationsteori. KTH, Skolan för elektro- och systemteknik (EES), Centra, ACCESS Linnaeus Centre.ORCID-id: 0000-0001-9456-8702
KTH, Skolan för elektro- och systemteknik (EES), Kommunikationsteori. KTH, Skolan för elektro- och systemteknik (EES), Centra, ACCESS Linnaeus Centre.
KTH, Skolan för elektro- och systemteknik (EES), Kommunikationsteori. KTH, Skolan för elektro- och systemteknik (EES), Centra, ACCESS Linnaeus Centre.
Visa övriga samt affilieringar
2012 (Engelska)Ingår i: 2012 Future Network and Mobile Summit, FutureNetw 2012, IIMC , 2012Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

This paper explores the trade-off between cooperation and secrecy in cognitive radio networks. We consider a scenario consisting of a primary and a secondary system. In the simplest case, each system is represented by a pair of transmitter and receiver. We assume a secrecy constraint on the transmission in the sense that the message of the primary transmitter has to be concealed from the secondary user. Both situations where the secondary transmitter is aware and unaware of the primary message are investigated and compared. Furthermore, we extend our results to the scenario where the secondary system comprises multiple users. For each case we sketch the derivation of the rates that are achievable from an information theoretic perspective. We then investigate the findings by numerical simulations. Our main result is that, in spite of the secrecy constraint, cooperation is beneficial in terms of the achievable rates. The secondary transmitter has the two contradicting tasks of helping the primary system and transmitting its own message. Our results show that both tasks can be accomplished simultaneously, improving both systems' performance. In particular, the secondary system can achieve a significant rate without decreasing the primary rate below the benchmark rate achievable without the help of the secondary transmitter. In the case of multiple secondary users, the rate region reduces, which results in a lower individual rate. However, the linear increase in sumrate counterbalances this effect.

Ort, förlag, år, upplaga, sidor
IIMC , 2012.
Nyckelord [en]
broadcast, Cognitive radio, cooperative communication, secrecy
Nationell ämneskategori
Telekommunikation
Identifikatorer
URN: urn:nbn:se:kth:diva-91514Scopus ID: 2-s2.0-84867211423ISBN: 978-190582430-4 (tryckt)OAI: oai:DiVA.org:kth-91514DiVA, id: diva2:510533
Konferens
2012 21st Future Network and Mobile Summit, FutureNetw 2012; Berlin; 4 July 2012 through 6 July 2012
Forskningsfinansiär
EU, FP7, Sjunde ramprogrammet, 248303ICT - The Next Generation
Anmärkning

QC 20121122

Tillgänglig från: 2012-03-16 Skapad: 2012-03-16 Senast uppdaterad: 2016-04-25Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Scopus

Personposter BETA

Li, NanThobaben, RagnarRasmussen, Lars K.Skoglund, Mikeal

Sök vidare i DiVA

Av författaren/redaktören
Gabry, FrédéricLi, NanSchrammar, NicolasGirnyk, MaksymThobaben, RagnarRasmussen, Lars K.Skoglund, Mikeal
Av organisationen
KommunikationsteoriACCESS Linnaeus Centre
Telekommunikation

Sök vidare utanför DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetricpoäng

isbn
urn-nbn
Totalt: 234 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf