ON THE CONSTRAINED STOCHASTIC GRADIENT ALGORITHM BEHAVIOR IN WIRELESS COMMUNICATION NETWORKS

KOLODZIEJ, JAVIER ERNESTO; TOBIAS, ORLANDO JOSÉ; SEARA, RUI; MORGAN, DENNIS R.

Recife, Brasil

Workshop; 9th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2008); 2008

Brazilian Telecommunications Society (SBrT) and IEEE Communications Society (COMSOC)

The purpose of this paper is to report on an unexpected behavior of the constrained stochastic gradient (CSG) algorithm in the combination of two events: one or more interference angles of arrival are close to the signal angle of arrival and the angle spreads of the involved signals are small. In this situation, the CSG algorithm stresses the co channel interference minimization more than the maximization of the power radiated to the in cell mobile terminal. We term this phenomenon unbalanced behavior and provide an analytical study to explain it.