MSpace - DSpace at UofM >
University of Manitoba Researchers (Research Publications) >
Research Publications (UofM Student, Faculty and Staff only access) >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1993/2864

Title: Downlink joint rate and power allocation in cellular multirate WCDMA systems
Authors: Kim, DI
Hossain, E
Bhargava, VK
Keywords: dynamic rate and power adaptation
multicell multirate wideband
code-division multiple-access (WCDMA) systems
radio link level throughput fairness
CDMA
Issue Date: 31-Jan-2003
Citation: 1536-1276; IEEE TRANS WIREL COMMUN, JAN 2003, vol. 2, no. 1, p.69 to 80.
Abstract: This paper proposes a novel dynamic joint rate, and power control procedure for, downlink data transmission in a multicell variable spreading factor wideband code-division multiple-access (WCUMA), system where the different users have similar quality-of-service requirements in terms of the. signal-to-interference ratio (SIR). Two variations of the dynamic joint rate and power allocation, procedure, namely, Algorithm-1 and Algorithm-2, are presented. The performances of these two schemes are compared to the, performance of the optimal dynamic link adaptation for,which the rate and power allocation is found by an exhaustive search. The optimality, criterion is the maximization of the total radio link level capacity (or sum-rate capacity) in terms of the average number of radio link level frame transmitted per adaptation interval under constrained SIR and power limit in the base station transmitter. The proposed schemes have linear time complexity as compared to the exponential time complexity of the optimal scheme and achieve better,radio link level throughput fairness compared to the optimal link adaptation scheme with a moderate loss in total throughput. Performance evaluation is carried out under random and directional micromobility models with uncorrelated and correlated long-term fading, respectively, in cellular WCDMA environment for both the homogeneous (or uniform) and the nonhomogeneous (or nonuniform) traffic load scenarios.
URI: http://hdl.handle.net/1993/2864
DOI: http://dx.doi.org/10.1109/TWC.2002.806366
Appears in Collection(s):Research Publications (UofM Student, Faculty and Staff only access)

Files in This Item:

File Description SizeFormat
Kim_Downlink_joint_rate.pdf708.54 kBAdobe PDFView/Open
View Statistics

Items in MSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! MSpace Software Copyright © 2002-2010  Duraspace - Feedback