Reverse Link Performance of DS-CDMA Cellular Systems Through Closed-Loop Power Control and Beamforming in 2D Urban Environment
The interference reduction capability of antenna arrays and the power control algorithms have been considered separately as means to decrease the interference in wireless communication networks. In this paper, the authors propose Smart Step closed-loop Power Control (SSPC) algorithm in Direct Sequence-Code Division Multiple Access (DS-CDMA) receivers in a 2D urban environment. This RAKE receiver consists of Conjugate Gradient adaptive BeamForming (CGBF) and Matched Filter (MF) in two stages and finally, the output signals from the MFs are combined and then are fed into the decision circuit for the desired user. Also, they present Switched-Beam (SB) technique for enhancing Signal to Interference plus Noise Ratio (SINR) in network.