DocumentCode :
3173372
Title :
Distributed Stochastic Power Control for Time-Varying Long-Term and Short-Term Fading Wireless Networks
Author :
Olama, Mohammed M. ; Djouadi, Seddik M. ; Charalambous, Charalambos D. ; Sahyoun, Samir
Author_Institution :
Univ. of Tennessee, Knoxville
fYear :
2007
fDate :
9-13 July 2007
Firstpage :
3088
Lastpage :
3093
Abstract :
In this paper, new time-varying wireless channel models that capture both the space and time variations of long- term and short-term fading wireless networks are developed. The proposed models are based on stochastic differential equations. These models are more realistic than the static ones usually encountered in the literature. Moreover, optimal power control algorithms based on the new models are proposed. A centralized power control algorithm is shown to reduce to a simple linear programming problem if predictable power control strategies are used. In addition, an iterative distributed stochastic power control algorithm is used to solve for the optimization problem using stochastic approximations. The latter solely requires each mobile to know its received signal to interference ratio unlike common stochastic algorithms found in the literature. Numerical results show that the proposed distributed stochastic power control algorithm under the new time-varying channels provides better power stability and consumption than the deterministic ones.
Keywords :
distributed control; fading channels; linear programming; optimal control; power control; radio access networks; stability; stochastic systems; telecommunication control; distributed stochastic power control; fading wireless networks; linear programming; optimal power control; optimization; power consumption; power stability; stochastic differential equations; time-varying wireless channel models; Differential equations; Fading; Interference; Iterative algorithms; Linear programming; Power control; Stability; Stochastic processes; Time-varying channels; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
American Control Conference, 2007. ACC '07
Conference_Location :
New York, NY
ISSN :
0743-1619
Print_ISBN :
1-4244-0988-8
Electronic_ISBN :
0743-1619
Type :
conf
DOI :
10.1109/ACC.2007.4282966
Filename :
4282966
Link To Document :
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