Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

Dependence of the mean SNR on the interaction between multiuser diversity, multipath diversity, and feedback delay

Publiceringsår: 2005
Språk: Engelska
Sidor: 1898-1902
Publikation/Tidskrift/Serie: 2005 IEEE 61st Vehicular Technology Conference. VTC2005- Spring
Dokumenttyp: Konferensbidrag
Förlag: IEEE Press


We examine wireless systems employing Rake receivers and fast scheduling over multiple users. The interactions between multipath diversity, multiuser diversity, and the feedback delay are investigated in terms of the mean signal-to-noise ratio (SNR). It is assumed that all users experience the same propagation characteristics, i.e., the same number of taps and power-delay profile (PDP). The results are exact as well as asymptotic (in the number of users) expressions that quantify this interaction. It is found that as the number of taps in the channel increases, the multiuser diversity gain decreases but better robustness against feedback delay is achieved. Furthermore, the asymptotic results derived show good agreement with the exact results for an exponential PDP, even for few users. Thus, we obtain expressions for the mean SNR that are compact and easy to evaluate



  • Electrical Engineering, Electronic Engineering, Information Engineering
  • power-delay profile
  • signal-to-noise ratio
  • Rake receivers
  • wireless systems
  • feedback delay
  • multiuser diversity
  • multipath diversity


2005 IEEE 61st Vehicular Technology Conference. VTC2005- Spring
30 May-1 June 2005
Stockholm, Sweden
© 2005 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
  • ISBN: 0-7803-8887-9

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen