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

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

doi:10.1109/VETECS.2005.1543652

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

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

Department of Electrical and Information Technology

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

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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

Original language	English
Title of host publication	2005 IEEE 61st Vehicular Technology Conference. VTC2005- Spring
Publisher	IEEE - Institute of Electrical and Electronics Engineers Inc.
Pages	1898-1902
ISBN (Print)	0-7803-8887-9
DOIs	https://doi.org/10.1109/VETECS.2005.1543652
Publication status	Published - 2005
Event	IEEE Vehicular Technology Conference -VTC Spring, 2005 : Paving the Path for a Wireless Future - Stockholm, Sweden Duration: 2005 May 30 → 2005 Jun 1 Conference number: 61

Conference

Conference	IEEE Vehicular Technology Conference -VTC Spring, 2005
Country/Territory	Sweden
City	Stockholm
Period	2005/05/30 → 2005/06/01

Subject classification (UKÄ)

Electrical Engineering, Electronic Engineering, Information Engineering

Free keywords

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

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10.1109/VETECS.2005.1543652

InteractionICC2005

Cite this

@inproceedings{0e273511343b4fd4a80469a10313554f,

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

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",

keywords = "power-delay profile, signal-to-noise ratio, Rake receivers, wireless systems, feedback delay, multiuser diversity, multipath diversity",

author = "Fredrik Flor{\'e}n and M Win and Ove Edfors and Bengt-Arne Molin",

year = "2005",

doi = "10.1109/VETECS.2005.1543652",

language = "English",

isbn = "0-7803-8887-9",

pages = "1898--1902",

booktitle = "2005 IEEE 61st Vehicular Technology Conference. VTC2005- Spring",

publisher = "IEEE - Institute of Electrical and Electronics Engineers Inc.",

address = "United States",

note = "IEEE Vehicular Technology Conference -VTC Spring, 2005 : Paving the Path for a Wireless Future ; Conference date: 30-05-2005 Through 01-06-2005",

}

Florén, F, Win, M, Edfors, O & Molin, B-A 2005, Dependence of the mean SNR on the interaction between multiuser diversity, multipath diversity, and feedback delay. in 2005 IEEE 61st Vehicular Technology Conference. VTC2005- Spring. IEEE - Institute of Electrical and Electronics Engineers Inc., pp. 1898-1902, IEEE Vehicular Technology Conference -VTC Spring, 2005 , Stockholm, Sweden, 2005/05/30. https://doi.org/10.1109/VETECS.2005.1543652

Dependence of the mean SNR on the interaction between multiuser diversity, multipath diversity, and feedback delay. / Florén, Fredrik; Win, M; Edfors, Ove et al.
2005 IEEE 61st Vehicular Technology Conference. VTC2005- Spring. IEEE - Institute of Electrical and Electronics Engineers Inc., 2005. p. 1898-1902.

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

TY - GEN

T1 - Dependence of the mean SNR on the interaction between multiuser diversity, multipath diversity, and feedback delay

AU - Florén, Fredrik

AU - Win, M

AU - Edfors, Ove

AU - Molin, Bengt-Arne

N1 - Conference code: 61

PY - 2005

Y1 - 2005

N2 - 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

AB - 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

KW - power-delay profile

KW - signal-to-noise ratio

KW - Rake receivers

KW - wireless systems

KW - feedback delay

KW - multiuser diversity

KW - multipath diversity

U2 - 10.1109/VETECS.2005.1543652

DO - 10.1109/VETECS.2005.1543652

M3 - Paper in conference proceeding

SN - 0-7803-8887-9

SP - 1898

EP - 1902

BT - 2005 IEEE 61st Vehicular Technology Conference. VTC2005- Spring

PB - IEEE - Institute of Electrical and Electronics Engineers Inc.

T2 - IEEE Vehicular Technology Conference -VTC Spring, 2005

Y2 - 30 May 2005 through 1 June 2005

ER -

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

Abstract

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Subject classification (UKÄ)

Free keywords

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Cite this