Reverse Link Performance of a DS-CDMA System With Both Fast and Slow Power Controlled Users

Joint closed-loop power control and constrained LMS algorithm for DS-CDMA receiver in multipath fading channels

“…where b E is the energy per bit for all users) [2], [9]. The received signal in the base station q in sensor s for user q i, is given by [9] ( ) …”

“…2). Also the variable k Θ defined the set of the nearest BSs to user k ; shadowing between user k and BS m ; q S BS is the set of users that connected to BS q and o S is the set of users that not connected to BS q[2],[14]. Also in (1): Block diagram of a three-stage RAKE receiver in DS-CDMA system[9].is the received power in the BS m of user m k, in the presence of closed-loop power control where m k p , is the transmitted power of user m k, that in the case of the PPC,…”

DS-CDMA Cellular Systems Performance with Base Station Assignment, Power Control Error and Beamforming over Multipath Fading

“…However, when applying power control in practice the performance is restricted by a number of limitations and therefore, perfect power control cannot be achieved. The issue of the effect of power control errors on CDMA systems has received a great deal of attention over the last few years [2]- [4]. Accordingly, in this paper, we consider the effect of power control error (PCE) on direct-sequence (DS)-CDMA cellular systems.…”

Reverse Link Performance of DS-CDMA Cellular Systems through Closed-Loop Power Control and Beamforming in 2D Urban Environment

“…In the uplink of CDMA systems, the maximum number of supportable users per cell is limited by multipath fading, shadowing, and near-far effects that cause fluctuations of the received power at the base station (BS). Two types of power control are often considered: closed-loop power control and open-loop power control [1], [2]. In a closed-loop power control, according to the received signal power at a base station, the base station sends a command to a mobile set (MS) to adjust the transmit power of the mobile.…”

“…Accordingly, in this paper we present the SSPC algorithm in DS-CDMA cellular systems in a 2D urban environment. On the other hand, the issue of the effect of power control errors on wireless networks has received a great deal of attention over the last few years [1], [2], [18]. Finally, we consider the effect of PCE on DS-CDMA cellular systems in a 2D urban environment.…”