Title :
Joint Power and Rate Control for Delay Tolerant Traffic in a Wireless System
Author_Institution :
Ericsson Res., Ericsson AB, Stockholm
Abstract :
A power and rate control scheme especially crafted for delay tolerant traffic under interfering link conditions is presented in this paper. Specifically, an iterative distributed algorithm, based on a sum-power constrained sum-rate maximization with upper (and lower) power and rate constraints, is developed. The feasibility and performance of the algorithm is demonstrated by simulation in a cellular system, where it is applied both for SISO and MIMO links. Simulations show significant improvement of the sum-rate vs. sum-power relation compared to both HSDPA-like "fixed power adaptive rate" and GSM-like "fixed rate adaptive power" radio resource management. Also, the method offers automatic re-use handling by silencing sub-optimal links. In a MIMO scenario, the sum-rate scales near linearly with the number of antenna elements.
Keywords :
3G mobile communication; MIMO communication; cellular radio; code division multiple access; iterative methods; power control; radio links; telecommunication control; telecommunication network management; telecommunication traffic; GSM; HSDPA; MIMO links; SISO links; cellular system; delay tolerant traffic; fixed power adaptive rate radio resource management; fixed rate adaptive power radio resource management; iterative distributed algorithm; power control; rate control; sum-power constrained sum-rate maximization; wireless system; Control systems; Delay; Distributed algorithms; Interference; MIMO; Partial response channels; Power system modeling; Quality of service; Resource management; Traffic control;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th
Conference_Location :
Dublin
Print_ISBN :
1-4244-0266-2
DOI :
10.1109/VETECS.2007.579
