Optimal power control for CDMA systems in the wideband limit

Author

Holliday, Tim ; Goldsmith, Andrea ; Glynn, Peter

Author_Institution

Stanford Univ., Palo Alto, CA, USA

fYear

2003

fDate

29 June-4 July 2003

Firstpage

418

Abstract

Traditional methods for solving multiuser control problems in CDMA systems do not scale well as the number of users in the system increases. To address this problem we develop a wideband limit approximation for dynamic programming problems in CDMA systems. This approximation greatly simplifies the state space and evolution equations for the users in a CDMA cell, thereby simplifying the optimal control problem. This wideband convergence result holds for a number of different linear multiuser receiver structures including the MMSE and matched filter receivers.

Keywords

broadband networks; cellular radio; code division multiple access; convergence; dynamic programming; matched filters; multiuser channels; optimal control; power control; radio receivers; spread spectrum communication; state-space methods; CDMA cell user; CDMA system; MMSE; dynamic programming problem; evolution equation; linear multiuser receiver structure; matched filter receiver; multiuser control problem; optimal power control; state space equation; wideband convergence; wideband limit approximation; Control systems; Convergence; Dynamic programming; Equations; Matched filters; Multiaccess communication; Optimal control; Power control; State-space methods; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory, 2003. Proceedings. IEEE International Symposium on

Print_ISBN

0-7803-7728-1

Type

conf

DOI

10.1109/ISIT.2003.1228435

Filename

1228435