Title :
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
fDate :
29 June-4 July 2003
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;
Conference_Titel :
Information Theory, 2003. Proceedings. IEEE International Symposium on
Print_ISBN :
0-7803-7728-1
DOI :
10.1109/ISIT.2003.1228435
