DocumentCode
3248466
Title
Gradient Descent Interference Avoidance for Uplink CDMA Systems with Multipath
Author
Popescu, Dimitrie C. ; Rawat, Danda B. ; Popescu, Otilia
Author_Institution
Old Dominion Univ., Norfolk
fYear
2007
fDate
4-7 Nov. 2007
Firstpage
1060
Lastpage
1064
Abstract
In this paper we present an algorithm for joint codeword and power adaptation in uplink code division multiple access (CDMA) systems with multipath channels between users and the base station. The algorithm is based on gradient descent (GD) interference avoidance (IA) and adapts user codewords and powers incrementally to meet specified targets for the signal- to-interference+noise-ratio (SINR). The proposed algorithm is illustrated with numerical examples obtained from simulations.
Keywords
code division multiple access; gradient methods; interference suppression; multipath channels; radio links; radiofrequency interference; code division multiple access; gradient descent interference avoidance; multipath channels; uplink CDMA systems; Base stations; Error correction codes; Interference; Multiaccess communication; Multipath channels; Power control; Power system modeling; Quality of service; Signal to noise ratio; Transmitters;
fLanguage
English
Publisher
ieee
Conference_Titel
Signals, Systems and Computers, 2007. ACSSC 2007. Conference Record of the Forty-First Asilomar Conference on
Conference_Location
Pacific Grove, CA
ISSN
1058-6393
Print_ISBN
978-1-4244-2109-1
Electronic_ISBN
1058-6393
Type
conf
DOI
10.1109/ACSSC.2007.4487384
Filename
4487384
Link To Document