Dependence of the mean SNR on the interaction between multiuser diversity, multipath diversity, and feedback delay
(2005) IEEE Vehicular Technology Conference -VTC Spring, 2005 p.1898-1902- Abstract
- 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... (More)
- 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 (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/615534
- author
- Florén, Fredrik LU ; Win, M ; Edfors, Ove LU and Molin, Bengt-Arne LU
- organization
- publishing date
- 2005
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- power-delay profile, signal-to-noise ratio, Rake receivers, wireless systems, feedback delay, multiuser diversity, multipath diversity
- host publication
- 2005 IEEE 61st Vehicular Technology Conference. VTC2005- Spring
- pages
- 1898 - 1902
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- IEEE Vehicular Technology Conference -VTC Spring, 2005
- conference location
- Stockholm, Sweden
- conference dates
- 2005-05-30 - 2005-06-01
- external identifiers
-
- wos:000232179302101
- scopus:26444515526
- ISBN
- 0-7803-8887-9
- DOI
- 10.1109/VETECS.2005.1543652
- language
- English
- LU publication?
- yes
- id
- 0e273511-343b-4fd4-a804-69a10313554f (old id 615534)
- date added to LUP
- 2016-04-04 11:36:49
- date last changed
- 2024-01-13 01:26:42
@inproceedings{0e273511-343b-4fd4-a804-69a10313554f, abstract = {{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}}, author = {{Florén, Fredrik and Win, M and Edfors, Ove and Molin, Bengt-Arne}}, booktitle = {{2005 IEEE 61st Vehicular Technology Conference. VTC2005- Spring}}, isbn = {{0-7803-8887-9}}, keywords = {{power-delay profile; signal-to-noise ratio; Rake receivers; wireless systems; feedback delay; multiuser diversity; multipath diversity}}, language = {{eng}}, pages = {{1898--1902}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, title = {{Dependence of the mean SNR on the interaction between multiuser diversity, multipath diversity, and feedback delay}}, url = {{https://lup.lub.lu.se/search/files/5814394/5385540.pdf}}, doi = {{10.1109/VETECS.2005.1543652}}, year = {{2005}}, }