The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

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

Author

  • Fredrik Florén
  • M Win
  • Ove Edfors
  • Bengt-Arne Molin

Summary, in English

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

Publishing year

2005

Language

English

Pages

1898-1902

Publication/Series

2005 IEEE 61st Vehicular Technology Conference. VTC2005- Spring

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • power-delay profile
  • signal-to-noise ratio
  • Rake receivers
  • wireless systems
  • feedback delay
  • multiuser diversity
  • multipath diversity

Conference name

IEEE Vehicular Technology Conference -VTC Spring, 2005

Conference date

2005-05-30 - 2005-06-01

Conference place

Stockholm, Sweden

Status

Published

ISBN/ISSN/Other

  • ISBN: 0-7803-8887-9