EFFICIENT DISTRIBUTED POWER-CONTROL FOR CELLULAR MOBILE SYSTEMS

Various distributed carrier-to-interference (C/I) balancing procedures have been developed to cope with implementational drawbacks of centra lized power-control schemes, However, it would be inevitable for these distributed schemes to lose some system performance compared to a cen tralized one since they control their power level based on only the lo cal C/I measurements. In this paper, an efficient distributed power-co ntrol (DPC) scheme is proposed to maximize the system performance, A d istributed C/I balancing algorithm is suggested, which converges fast and is robust to C/I estimation errors. A simple instability detection rule is also suggested to accelerate the balancing phase of DPC schem es, Numerical results indicate that our algorithm achieves improvement s in terms of the outage probability as well as the algorithm speed. R obustness to the C/I measurement errors is also explored.